/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.commons.lang3; import static org.junit.jupiter.api.Assertions.assertArrayEquals; import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertFalse; import static org.junit.jupiter.api.Assertions.assertNotNull; import static org.junit.jupiter.api.Assertions.assertNotSame; import static org.junit.jupiter.api.Assertions.assertNull; import static org.junit.jupiter.api.Assertions.assertSame; import static org.junit.jupiter.api.Assertions.assertThrows; import static org.junit.jupiter.api.Assertions.assertTrue; import java.lang.reflect.Constructor; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.util.ArrayList; import java.util.Collections; import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Set; import java.util.TreeMap; import org.apache.commons.lang3.ClassUtils.Interfaces; import org.apache.commons.lang3.reflect.testbed.GenericConsumer; import org.apache.commons.lang3.reflect.testbed.GenericParent; import org.apache.commons.lang3.reflect.testbed.StringParameterizedChild; import org.junit.jupiter.api.Assertions; import org.junit.jupiter.api.DisplayName; import org.junit.jupiter.api.Test; /** * Unit tests {@link org.apache.commons.lang3.ClassUtils}. */ @SuppressWarnings("boxing") // JUnit4 does not support primitive equality testing apart from long public class ClassUtilsTest extends AbstractLangTest { private static final String OBJECT_CANONICAL_NAME = "java.lang.Object"; private static class CX implements IB, IA, IE { // empty } @SuppressWarnings("unused") // IB is redundant but what a test checks private static class CY extends CX implements IB, IC { // empty } private interface IA { // empty } private interface IB { // empty } private interface IC extends ID, IE { // empty } private interface ID { // empty } private interface IE extends IF { // empty } private interface IF { // empty } private static class Inner { private class DeeplyNested { // empty } } private void assertGetClassReturnsClass(final Class c) throws Exception { assertEquals(c, ClassUtils.getClass(c.getName())); } private void assertGetClassThrowsClassNotFound(final String className) { assertGetClassThrowsException(className, ClassNotFoundException.class); } private void assertGetClassThrowsException(final String className, final Class exceptionType) { assertThrows(exceptionType, () -> ClassUtils.getClass(className), "ClassUtils.getClass() should fail with an exception of type " + exceptionType.getName() + " when given class name \"" + className + "\"."); } private void assertGetClassThrowsNullPointerException(final String className) { assertGetClassThrowsException(className, NullPointerException.class); } @Test public void test_convertClassesToClassNames_List() { final List> list = new ArrayList<>(); List result = ClassUtils.convertClassesToClassNames(list); assertEquals(0, result.size()); list.add(String.class); list.add(null); list.add(Object.class); result = ClassUtils.convertClassesToClassNames(list); assertEquals(3, result.size()); assertEquals("java.lang.String", result.get(0)); assertNull(result.get(1)); assertEquals(OBJECT_CANONICAL_NAME, result.get(2)); @SuppressWarnings("unchecked") // test what happens when non-generic code adds wrong type of element final List olist = (List) (List) list; olist.add(new Object()); assertThrows(ClassCastException.class, () -> ClassUtils.convertClassesToClassNames(list), "Should not have been able to convert list"); assertNull(ClassUtils.convertClassesToClassNames(null)); } @Test public void test_convertClassNamesToClasses_List() { final List list = new ArrayList<>(); List> result = ClassUtils.convertClassNamesToClasses(list); assertEquals(0, result.size()); list.add("java.lang.String"); list.add("java.lang.xxx"); list.add(OBJECT_CANONICAL_NAME); result = ClassUtils.convertClassNamesToClasses(list); assertEquals(3, result.size()); assertEquals(String.class, result.get(0)); assertNull(result.get(1)); assertEquals(Object.class, result.get(2)); @SuppressWarnings("unchecked") // test what happens when non-generic code adds wrong type of element final List olist = (List) (List) list; olist.add(new Object()); assertThrows(ClassCastException.class, () -> ClassUtils.convertClassNamesToClasses(list), "Should not have been able to convert list"); assertNull(ClassUtils.convertClassNamesToClasses(null)); } @Test public void test_getAbbreviatedName_Class() { assertEquals("", ClassUtils.getAbbreviatedName((Class) null, 1)); assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 1)); assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 5)); assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName(ClassUtils.class, 18)); assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 13)); assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 15)); assertEquals("java.lang.String", ClassUtils.getAbbreviatedName(String.class, 20)); } @Test @DisplayName("When the desired length is negative then exception is thrown") public void test_getAbbreviatedName_Class_NegativeLen() { assertThrows(IllegalArgumentException.class, () -> ClassUtils.getAbbreviatedName(String.class, -10)); } @Test @DisplayName("When the desired length is zero then exception is thrown") public void test_getAbbreviatedName_Class_ZeroLen() { assertThrows(IllegalArgumentException.class, () -> ClassUtils.getAbbreviatedName(String.class, 0)); } @Test public void test_getAbbreviatedName_String() { assertEquals("", ClassUtils.getAbbreviatedName((String) null, 1)); assertEquals("", ClassUtils.getAbbreviatedName("", 1)); assertEquals("WithoutPackage", ClassUtils.getAbbreviatedName("WithoutPackage", 1)); assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", 1)); assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", 18)); assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", "org.apache.commons.lang3.ClassUtils".length())); assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("o.a.c.l.ClassUtils", 18)); assertEquals("o..c.l.ClassUtils", ClassUtils.getAbbreviatedName("o..c.l.ClassUtils", 18)); assertEquals(".", ClassUtils.getAbbreviatedName(".", 18)); assertEquals(".", ClassUtils.getAbbreviatedName(".", 1)); assertEquals("..", ClassUtils.getAbbreviatedName("..", 1)); assertEquals("...", ClassUtils.getAbbreviatedName("...", 2)); assertEquals("...", ClassUtils.getAbbreviatedName("...", 3)); assertEquals("java.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", Integer.MAX_VALUE)); assertEquals("j.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length())); assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length() - 1)); assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length())); assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length() - 1)); } /** * Test that in case the required length is larger than the name and thus there is no need for any shortening then the * returned string object is the same as the one passed as argument. Note, however, that this is tested as an internal * implementation detail, but it is not a guaranteed feature of the implementation. */ @Test @DisplayName("When the length hint is longer than the actual length then the same String object is returned") public void test_getAbbreviatedName_TooLongHint() { final String className = "java.lang.String"; Assertions.assertSame(className, ClassUtils.getAbbreviatedName(className, className.length() + 1)); Assertions.assertSame(className, ClassUtils.getAbbreviatedName(className, className.length())); } @Test public void test_getAllInterfaces_Class() { final List list = ClassUtils.getAllInterfaces(CY.class); assertEquals(6, list.size()); assertEquals(IB.class, list.get(0)); assertEquals(IC.class, list.get(1)); assertEquals(ID.class, list.get(2)); assertEquals(IE.class, list.get(3)); assertEquals(IF.class, list.get(4)); assertEquals(IA.class, list.get(5)); assertNull(ClassUtils.getAllInterfaces(null)); } @Test public void test_getAllSuperclasses_Class() { final List list = ClassUtils.getAllSuperclasses(CY.class); assertEquals(2, list.size()); assertEquals(CX.class, list.get(0)); assertEquals(Object.class, list.get(1)); assertNull(ClassUtils.getAllSuperclasses(null)); } @Test public void test_getCanonicalName_Class() { assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class)); assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class)); assertEquals("", ClassUtils.getCanonicalName((Class) null)); assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class)); assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class)); // Primitives assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class)); assertEquals("byte", ClassUtils.getCanonicalName(byte.class)); assertEquals("char", ClassUtils.getCanonicalName(char.class)); assertEquals("short", ClassUtils.getCanonicalName(short.class)); assertEquals("int", ClassUtils.getCanonicalName(int.class)); assertEquals("long", ClassUtils.getCanonicalName(long.class)); assertEquals("float", ClassUtils.getCanonicalName(float.class)); assertEquals("double", ClassUtils.getCanonicalName(double.class)); // Primitive Arrays assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class)); assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class)); assertEquals("char[]", ClassUtils.getCanonicalName(char[].class)); assertEquals("short[]", ClassUtils.getCanonicalName(short[].class)); assertEquals("int[]", ClassUtils.getCanonicalName(int[].class)); assertEquals("long[]", ClassUtils.getCanonicalName(long[].class)); assertEquals("float[]", ClassUtils.getCanonicalName(float[].class)); assertEquals("double[]", ClassUtils.getCanonicalName(double[].class)); // Arrays of arrays of ... assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class)); assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class)); assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class)); // Inner types class Named { // empty } assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(new Object() { // empty }.getClass())); assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(Named.class)); assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class)); } @Test public void test_getCanonicalName_Class_String() { assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class, "X")); assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class, "X")); assertEquals("X", ClassUtils.getCanonicalName((Class) null, "X")); assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class, "X")); assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class, "X")); // Primitives assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class, "X")); assertEquals("byte", ClassUtils.getCanonicalName(byte.class, "X")); assertEquals("char", ClassUtils.getCanonicalName(char.class, "X")); assertEquals("short", ClassUtils.getCanonicalName(short.class, "X")); assertEquals("int", ClassUtils.getCanonicalName(int.class, "X")); assertEquals("long", ClassUtils.getCanonicalName(long.class, "X")); assertEquals("float", ClassUtils.getCanonicalName(float.class, "X")); assertEquals("double", ClassUtils.getCanonicalName(double.class, "X")); // Primitive Arrays assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class, "X")); assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class, "X")); assertEquals("char[]", ClassUtils.getCanonicalName(char[].class, "X")); assertEquals("short[]", ClassUtils.getCanonicalName(short[].class, "X")); assertEquals("int[]", ClassUtils.getCanonicalName(int[].class, "X")); assertEquals("long[]", ClassUtils.getCanonicalName(long[].class, "X")); assertEquals("float[]", ClassUtils.getCanonicalName(float[].class, "X")); assertEquals("double[]", ClassUtils.getCanonicalName(double[].class, "X")); // Arrays of arrays of ... assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class, "X")); assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class, "X")); assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class, "X")); // Inner types class Named { // empty } assertEquals("X", ClassUtils.getCanonicalName(new Object() { // empty }.getClass(), "X")); assertEquals("X", ClassUtils.getCanonicalName(Named.class, "X")); assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class, "X")); assertEquals("X", ClassUtils.getCanonicalName((Object) null, "X")); assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getCanonicalName(new Object())); } @Test public void test_getClass() { // assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(ClassLoader.class, "@")); } @Test public void test_getName_Class() { assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(ClassUtils.class)); assertEquals("java.util.Map$Entry", ClassUtils.getName(Map.Entry.class)); assertEquals("", ClassUtils.getName((Class) null)); assertEquals("[Ljava.lang.String;", ClassUtils.getName(String[].class)); assertEquals("[Ljava.util.Map$Entry;", ClassUtils.getName(Map.Entry[].class)); // Primitives assertEquals("boolean", ClassUtils.getName(boolean.class)); assertEquals("byte", ClassUtils.getName(byte.class)); assertEquals("char", ClassUtils.getName(char.class)); assertEquals("short", ClassUtils.getName(short.class)); assertEquals("int", ClassUtils.getName(int.class)); assertEquals("long", ClassUtils.getName(long.class)); assertEquals("float", ClassUtils.getName(float.class)); assertEquals("double", ClassUtils.getName(double.class)); // Primitive Arrays assertEquals("[Z", ClassUtils.getName(boolean[].class)); assertEquals("[B", ClassUtils.getName(byte[].class)); assertEquals("[C", ClassUtils.getName(char[].class)); assertEquals("[S", ClassUtils.getName(short[].class)); assertEquals("[I", ClassUtils.getName(int[].class)); assertEquals("[J", ClassUtils.getName(long[].class)); assertEquals("[F", ClassUtils.getName(float[].class)); assertEquals("[D", ClassUtils.getName(double[].class)); // Arrays of arrays of ... assertEquals("[[Ljava.lang.String;", ClassUtils.getName(String[][].class)); assertEquals("[[[Ljava.lang.String;", ClassUtils.getName(String[][][].class)); assertEquals("[[[[Ljava.lang.String;", ClassUtils.getName(String[][][][].class)); // Inner types class Named { // empty } assertEquals("org.apache.commons.lang3.ClassUtilsTest$3", ClassUtils.getName(new Object() { // empty }.getClass())); assertEquals("org.apache.commons.lang3.ClassUtilsTest$3Named", ClassUtils.getName(Named.class)); assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(Inner.class)); assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getName(new Object())); } @Test public void test_getName_Object() { assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(new ClassUtils(), "")); assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "")); assertEquals("java.lang.String", ClassUtils.getName("hello", "")); assertEquals("", ClassUtils.getName(null, "")); // Inner types class Named { // empty } assertEquals("org.apache.commons.lang3.ClassUtilsTest$4", ClassUtils.getName(new Object() { // empty }, "")); assertEquals("org.apache.commons.lang3.ClassUtilsTest$4Named", ClassUtils.getName(new Named(), "")); assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "")); } @Test public void test_getPackageCanonicalName_Class() { assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils.class)); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[].class)); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[][].class)); assertEquals("", ClassUtils.getPackageCanonicalName(int[].class)); assertEquals("", ClassUtils.getPackageCanonicalName(int[][].class)); // Inner types class Named { // empty } assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() { // empty }.getClass())); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Named.class)); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Inner.class)); assertEquals(StringUtils.EMPTY, ClassUtils.getPackageCanonicalName((Class) null)); } @Test public void test_getPackageCanonicalName_Object() { assertEquals("", ClassUtils.getPackageCanonicalName(null, "")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils(), "")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0], "")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0][0], "")); assertEquals("", ClassUtils.getPackageCanonicalName(new int[0], "")); assertEquals("", ClassUtils.getPackageCanonicalName(new int[0][0], "")); // Inner types class Named { // empty } assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() { // empty }, "")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Named(), "")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Inner(), "")); } @Test public void test_getPackageCanonicalName_String() { assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[]")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[][]")); assertEquals("", ClassUtils.getPackageCanonicalName("[I")); assertEquals("", ClassUtils.getPackageCanonicalName("[[I")); assertEquals("", ClassUtils.getPackageCanonicalName("int[]")); assertEquals("", ClassUtils.getPackageCanonicalName("int[][]")); // Inner types assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner")); } @Test public void test_getPackageName_Class() { assertEquals("java.lang", ClassUtils.getPackageName(String.class)); assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class)); assertEquals("", ClassUtils.getPackageName((Class) null)); // LANG-535 assertEquals("java.lang", ClassUtils.getPackageName(String[].class)); // Primitive Arrays assertEquals("", ClassUtils.getPackageName(boolean[].class)); assertEquals("", ClassUtils.getPackageName(byte[].class)); assertEquals("", ClassUtils.getPackageName(char[].class)); assertEquals("", ClassUtils.getPackageName(short[].class)); assertEquals("", ClassUtils.getPackageName(int[].class)); assertEquals("", ClassUtils.getPackageName(long[].class)); assertEquals("", ClassUtils.getPackageName(float[].class)); assertEquals("", ClassUtils.getPackageName(double[].class)); // Arrays of arrays of ... assertEquals("java.lang", ClassUtils.getPackageName(String[][].class)); assertEquals("java.lang", ClassUtils.getPackageName(String[][][].class)); assertEquals("java.lang", ClassUtils.getPackageName(String[][][][].class)); // On-the-fly types class Named { // empty } assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Object() { // empty }.getClass())); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(Named.class)); } @Test public void test_getPackageName_Object() { assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new ClassUtils(), "")); assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Inner(), "")); assertEquals("", ClassUtils.getPackageName(null, "")); } @Test public void test_getPackageName_String() { assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(ClassUtils.class.getName())); assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class.getName())); assertEquals("", ClassUtils.getPackageName((String) null)); assertEquals("", ClassUtils.getPackageName("")); } @Test public void test_getShortCanonicalName_Class() { assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(ClassUtils.class)); assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(ClassUtils[].class)); assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(ClassUtils[][].class)); assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class)); assertEquals("int[][]", ClassUtils.getShortCanonicalName(int[][].class)); // Inner types class Named { // empty } assertEquals("", ClassUtils.getShortCanonicalName(new Object() { // empty }.getClass())); // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("", ClassUtils.getShortCanonicalName(Named.class)); assertEquals("Inner", ClassUtils.getShortCanonicalName(Inner.class)); assertEquals(StringUtils.EMPTY, ClassUtils.getShortCanonicalName((Class) null)); } @Test public void test_getShortCanonicalName_Object() { assertEquals("", ClassUtils.getShortCanonicalName(null, "")); assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(new ClassUtils(), "")); assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(new ClassUtils[0], "")); assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(new ClassUtils[0][0], "")); assertEquals("int[]", ClassUtils.getShortCanonicalName(new int[0], "")); assertEquals("int[][]", ClassUtils.getShortCanonicalName(new int[0][0], "")); // Inner types class Named { // empty } assertEquals("", ClassUtils.getShortCanonicalName(new Object() { // empty }, "")); assertEquals("", ClassUtils.getShortCanonicalName(new Named(), "")); assertEquals("Inner", ClassUtils.getShortCanonicalName(new Inner(), "")); } @Test public void test_getShortCanonicalName_String() { assertEquals("", ClassUtils.getShortCanonicalName((String) null)); assertEquals("Map.Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getName())); assertEquals("Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getCanonicalName())); assertEquals("ClassUtils", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils")); assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;")); assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;")); assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[]")); assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[][]")); assertEquals("int[]", ClassUtils.getShortCanonicalName("[I")); assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getCanonicalName())); assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getName())); assertEquals("int[][]", ClassUtils.getShortCanonicalName("[[I")); assertEquals("int[]", ClassUtils.getShortCanonicalName("int[]")); assertEquals("int[][]", ClassUtils.getShortCanonicalName("int[][]")); // this is to demonstrate that the documentation and the naming of the methods // uses the class name and canonical name totally mixed up, which cannot be // fixed without backward compatibility break assertEquals("int[]", int[].class.getCanonicalName()); assertEquals("[I", int[].class.getName()); // Inner types... the problem is that these are not canonical names, classes with this name do not even have canonical // name // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("ClassUtilsTest.6", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6")); // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("ClassUtilsTest.5Named", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named")); assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner")); // demonstrating what a canonical name is... it is a bigger issue to clean this up assertEquals("org.apache.commons.lang3.ClassUtilsTest$10", new org.apache.commons.lang3.ClassUtilsTest() { }.getClass().getName()); assertNull(new org.apache.commons.lang3.ClassUtilsTest() { }.getClass().getCanonicalName()); } @Test public void test_getShortClassName_Class() { assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class)); assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class)); assertEquals("", ClassUtils.getShortClassName((Class) null)); // LANG-535 assertEquals("String[]", ClassUtils.getShortClassName(String[].class)); assertEquals("Map.Entry[]", ClassUtils.getShortClassName(Map.Entry[].class)); // Primitives assertEquals("boolean", ClassUtils.getShortClassName(boolean.class)); assertEquals("byte", ClassUtils.getShortClassName(byte.class)); assertEquals("char", ClassUtils.getShortClassName(char.class)); assertEquals("short", ClassUtils.getShortClassName(short.class)); assertEquals("int", ClassUtils.getShortClassName(int.class)); assertEquals("long", ClassUtils.getShortClassName(long.class)); assertEquals("float", ClassUtils.getShortClassName(float.class)); assertEquals("double", ClassUtils.getShortClassName(double.class)); // Primitive Arrays assertEquals("boolean[]", ClassUtils.getShortClassName(boolean[].class)); assertEquals("byte[]", ClassUtils.getShortClassName(byte[].class)); assertEquals("char[]", ClassUtils.getShortClassName(char[].class)); assertEquals("short[]", ClassUtils.getShortClassName(short[].class)); assertEquals("int[]", ClassUtils.getShortClassName(int[].class)); assertEquals("long[]", ClassUtils.getShortClassName(long[].class)); assertEquals("float[]", ClassUtils.getShortClassName(float[].class)); assertEquals("double[]", ClassUtils.getShortClassName(double[].class)); // Arrays of arrays of ... assertEquals("String[][]", ClassUtils.getShortClassName(String[][].class)); assertEquals("String[][][]", ClassUtils.getShortClassName(String[][][].class)); assertEquals("String[][][][]", ClassUtils.getShortClassName(String[][][][].class)); // Inner types class Named { // empty } // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("ClassUtilsTest.12", ClassUtils.getShortClassName(new Object() { // empty }.getClass())); // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("ClassUtilsTest.10Named", ClassUtils.getShortClassName(Named.class)); assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(Inner.class)); } @Test public void test_getShortClassName_Object() { assertEquals("ClassUtils", ClassUtils.getShortClassName(new ClassUtils(), "")); assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "")); assertEquals("String", ClassUtils.getShortClassName("hello", "")); assertEquals("", ClassUtils.getShortClassName(null, "")); // Inner types class Named { // empty } // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("ClassUtilsTest.13", ClassUtils.getShortClassName(new Object() { // empty }, "")); // WARNING: this is fragile, implementation may change, naming is not guaranteed assertEquals("ClassUtilsTest.11Named", ClassUtils.getShortClassName(new Named(), "")); assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "")); } @Test public void test_getShortClassName_String() { assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class.getName())); assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class.getName())); assertEquals("", ClassUtils.getShortClassName((String) null)); assertEquals("", ClassUtils.getShortClassName("")); } @Test public void test_getSimpleName_Class() { assertEquals("ClassUtils", ClassUtils.getSimpleName(ClassUtils.class)); assertEquals("Entry", ClassUtils.getSimpleName(Map.Entry.class)); assertEquals("", ClassUtils.getSimpleName(null)); // LANG-535 assertEquals("String[]", ClassUtils.getSimpleName(String[].class)); assertEquals("Entry[]", ClassUtils.getSimpleName(Map.Entry[].class)); // Primitives assertEquals("boolean", ClassUtils.getSimpleName(boolean.class)); assertEquals("byte", ClassUtils.getSimpleName(byte.class)); assertEquals("char", ClassUtils.getSimpleName(char.class)); assertEquals("short", ClassUtils.getSimpleName(short.class)); assertEquals("int", ClassUtils.getSimpleName(int.class)); assertEquals("long", ClassUtils.getSimpleName(long.class)); assertEquals("float", ClassUtils.getSimpleName(float.class)); assertEquals("double", ClassUtils.getSimpleName(double.class)); // Primitive Arrays assertEquals("boolean[]", ClassUtils.getSimpleName(boolean[].class)); assertEquals("byte[]", ClassUtils.getSimpleName(byte[].class)); assertEquals("char[]", ClassUtils.getSimpleName(char[].class)); assertEquals("short[]", ClassUtils.getSimpleName(short[].class)); assertEquals("int[]", ClassUtils.getSimpleName(int[].class)); assertEquals("long[]", ClassUtils.getSimpleName(long[].class)); assertEquals("float[]", ClassUtils.getSimpleName(float[].class)); assertEquals("double[]", ClassUtils.getSimpleName(double[].class)); // Arrays of arrays of ... assertEquals("String[][]", ClassUtils.getSimpleName(String[][].class)); assertEquals("String[][][]", ClassUtils.getSimpleName(String[][][].class)); assertEquals("String[][][][]", ClassUtils.getSimpleName(String[][][][].class)); // On-the-fly types class Named { // empty } assertEquals("", ClassUtils.getSimpleName(new Object() { // empty }.getClass())); assertEquals("Named", ClassUtils.getSimpleName(Named.class)); } @Test public void test_getSimpleName_Object() { assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils())); assertEquals("Inner", ClassUtils.getSimpleName(new Inner())); assertEquals("String", ClassUtils.getSimpleName("hello")); assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null)); assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null)); } @Test public void test_getSimpleName_Object_String() { assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils(), "")); assertEquals("Inner", ClassUtils.getSimpleName(new Inner(), "")); assertEquals("String", ClassUtils.getSimpleName("hello", "")); assertEquals("", ClassUtils.getSimpleName(null, "")); assertNull(ClassUtils.getSimpleName(null, null)); } @Test public void test_isAssignable() { assertFalse(ClassUtils.isAssignable((Class) null, null)); assertFalse(ClassUtils.isAssignable(String.class, null)); assertTrue(ClassUtils.isAssignable(null, Object.class)); assertTrue(ClassUtils.isAssignable(null, Integer.class)); assertFalse(ClassUtils.isAssignable(null, Integer.TYPE)); assertTrue(ClassUtils.isAssignable(String.class, Object.class)); assertTrue(ClassUtils.isAssignable(String.class, String.class)); assertFalse(ClassUtils.isAssignable(Object.class, String.class)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class)); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE)); assertTrue(ClassUtils.isAssignable(Integer.class, Object.class)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE)); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class)); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class)); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Object.class)); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE)); assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class)); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE)); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class)); } @Test public void test_isAssignable_Autoboxing() { assertFalse(ClassUtils.isAssignable((Class) null, null, true)); assertFalse(ClassUtils.isAssignable(String.class, null, true)); assertTrue(ClassUtils.isAssignable(null, Object.class, true)); assertTrue(ClassUtils.isAssignable(null, Integer.class, true)); assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, true)); assertTrue(ClassUtils.isAssignable(String.class, Object.class, true)); assertTrue(ClassUtils.isAssignable(String.class, String.class, true)); assertFalse(ClassUtils.isAssignable(Object.class, String.class, true)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class, true)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class, true)); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true)); assertTrue(ClassUtils.isAssignable(Integer.class, Object.class, true)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, true)); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, true)); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, true)); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true)); assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, true)); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, true)); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, true)); } @Test public void test_isAssignable_ClassArray_ClassArray() { final Class[] array2 = new Class[] {Object.class, Object.class}; final Class[] array1 = new Class[] {Object.class}; final Class[] array1s = new Class[] {String.class}; final Class[] array0 = new Class[] {}; final Class[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE}; final Class[] arrayWrappers = {Integer.class, Boolean.class}; assertFalse(ClassUtils.isAssignable(array1, array2)); assertFalse(ClassUtils.isAssignable(null, array2)); assertTrue(ClassUtils.isAssignable(null, array0)); assertTrue(ClassUtils.isAssignable(array0, array0)); assertTrue(ClassUtils.isAssignable(array0, (Class[]) null)); // explicit cast to avoid warning assertTrue(ClassUtils.isAssignable(null, (Class[]) null)); // explicit cast to avoid warning assertFalse(ClassUtils.isAssignable(array1, array1s)); assertTrue(ClassUtils.isAssignable(array1s, array1s)); assertTrue(ClassUtils.isAssignable(array1s, array1)); assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers)); assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives)); assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1)); assertFalse(ClassUtils.isAssignable(arrayWrappers, array1)); assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2)); assertTrue(ClassUtils.isAssignable(arrayWrappers, array2)); } @Test public void test_isAssignable_ClassArray_ClassArray_Autoboxing() { final Class[] array2 = new Class[] {Object.class, Object.class}; final Class[] array1 = new Class[] {Object.class}; final Class[] array1s = new Class[] {String.class}; final Class[] array0 = new Class[] {}; final Class[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE}; final Class[] arrayWrappers = {Integer.class, Boolean.class}; assertFalse(ClassUtils.isAssignable(array1, array2, true)); assertFalse(ClassUtils.isAssignable(null, array2, true)); assertTrue(ClassUtils.isAssignable(null, array0, true)); assertTrue(ClassUtils.isAssignable(array0, array0, true)); assertTrue(ClassUtils.isAssignable(array0, null, true)); assertTrue(ClassUtils.isAssignable((Class[]) null, null, true)); assertFalse(ClassUtils.isAssignable(array1, array1s, true)); assertTrue(ClassUtils.isAssignable(array1s, array1s, true)); assertTrue(ClassUtils.isAssignable(array1s, array1, true)); assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, true)); assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, true)); assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, true)); assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, true)); assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2, true)); assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, true)); } @Test public void test_isAssignable_ClassArray_ClassArray_NoAutoboxing() { final Class[] array2 = new Class[] {Object.class, Object.class}; final Class[] array1 = new Class[] {Object.class}; final Class[] array1s = new Class[] {String.class}; final Class[] array0 = new Class[] {}; final Class[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE}; final Class[] arrayWrappers = {Integer.class, Boolean.class}; assertFalse(ClassUtils.isAssignable(array1, array2, false)); assertFalse(ClassUtils.isAssignable(null, array2, false)); assertTrue(ClassUtils.isAssignable(null, array0, false)); assertTrue(ClassUtils.isAssignable(array0, array0, false)); assertTrue(ClassUtils.isAssignable(array0, null, false)); assertTrue(ClassUtils.isAssignable((Class[]) null, null, false)); assertFalse(ClassUtils.isAssignable(array1, array1s, false)); assertTrue(ClassUtils.isAssignable(array1s, array1s, false)); assertTrue(ClassUtils.isAssignable(array1s, array1, false)); assertFalse(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, false)); assertFalse(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, false)); assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, false)); assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, false)); assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, false)); assertFalse(ClassUtils.isAssignable(arrayPrimitives, array2, false)); } @Test public void test_isAssignable_DefaultUnboxing_Widening() { // test byte conversions assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE), "byte -> char"); assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE), "byte -> byte"); assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE), "byte -> short"); assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE), "byte -> int"); assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE), "byte -> long"); assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE), "byte -> float"); assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE), "byte -> double"); assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE), "byte -> boolean"); // test short conversions assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE), "short -> char"); assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE), "short -> byte"); assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE), "short -> short"); assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE), "short -> int"); assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE), "short -> long"); assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE), "short -> float"); assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE), "short -> double"); assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE), "short -> boolean"); // test char conversions assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE), "char -> char"); assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE), "char -> byte"); assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE), "char -> short"); assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE), "char -> int"); assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE), "char -> long"); assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE), "char -> float"); assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE), "char -> double"); assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE), "char -> boolean"); // test int conversions assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE), "int -> char"); assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE), "int -> byte"); assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE), "int -> short"); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE), "int -> int"); assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE), "int -> long"); assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE), "int -> float"); assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE), "int -> double"); assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE), "int -> boolean"); // test long conversions assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE), "long -> char"); assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE), "long -> byte"); assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE), "long -> short"); assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE), "long -> int"); assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE), "long -> long"); assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE), "long -> float"); assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE), "long -> double"); assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE), "long -> boolean"); // test float conversions assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE), "float -> char"); assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE), "float -> byte"); assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE), "float -> short"); assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE), "float -> int"); assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE), "float -> long"); assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE), "float -> float"); assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE), "float -> double"); assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE), "float -> boolean"); // test double conversions assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE), "double -> char"); assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE), "double -> byte"); assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE), "double -> short"); assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE), "double -> int"); assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE), "double -> long"); assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE), "double -> float"); assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE), "double -> double"); assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE), "double -> boolean"); // test boolean conversions assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE), "boolean -> char"); assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE), "boolean -> byte"); assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE), "boolean -> short"); assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE), "boolean -> int"); assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE), "boolean -> long"); assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE), "boolean -> float"); assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE), "boolean -> double"); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE), "boolean -> boolean"); } @Test public void test_isAssignable_NoAutoboxing() { assertFalse(ClassUtils.isAssignable((Class) null, null, false)); assertFalse(ClassUtils.isAssignable(String.class, null, false)); assertTrue(ClassUtils.isAssignable(null, Object.class, false)); assertTrue(ClassUtils.isAssignable(null, Integer.class, false)); assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, false)); assertTrue(ClassUtils.isAssignable(String.class, Object.class, false)); assertTrue(ClassUtils.isAssignable(String.class, String.class, false)); assertFalse(ClassUtils.isAssignable(Object.class, String.class, false)); assertFalse(ClassUtils.isAssignable(Integer.TYPE, Integer.class, false)); assertFalse(ClassUtils.isAssignable(Integer.TYPE, Object.class, false)); assertFalse(ClassUtils.isAssignable(Integer.class, Integer.TYPE, false)); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, false)); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, false)); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, false)); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Object.class, false)); assertFalse(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, false)); assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, false)); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, false)); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, false)); } @Test public void test_isAssignable_Unboxing_Widening() { // test byte conversions assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE, true), "byte -> char"); assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE, true), "byte -> byte"); assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE, true), "byte -> short"); assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE, true), "byte -> int"); assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE, true), "byte -> long"); assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE, true), "byte -> float"); assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE, true), "byte -> double"); assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE, true), "byte -> boolean"); // test short conversions assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE, true), "short -> char"); assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE, true), "short -> byte"); assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE, true), "short -> short"); assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE, true), "short -> int"); assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE, true), "short -> long"); assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE, true), "short -> float"); assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE, true), "short -> double"); assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE, true), "short -> boolean"); // test char conversions assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE, true), "char -> char"); assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE, true), "char -> byte"); assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE, true), "char -> short"); assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE, true), "char -> int"); assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE, true), "char -> long"); assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE, true), "char -> float"); assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE, true), "char -> double"); assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE, true), "char -> boolean"); // test int conversions assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE, true), "int -> char"); assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE, true), "int -> byte"); assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE, true), "int -> short"); assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true), "int -> int"); assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE, true), "int -> long"); assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE, true), "int -> float"); assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE, true), "int -> double"); assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE, true), "int -> boolean"); // test long conversions assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE, true), "long -> char"); assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE, true), "long -> byte"); assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE, true), "long -> short"); assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE, true), "long -> int"); assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE, true), "long -> long"); assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE, true), "long -> float"); assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE, true), "long -> double"); assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE, true), "long -> boolean"); // test float conversions assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE, true), "float -> char"); assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE, true), "float -> byte"); assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE, true), "float -> short"); assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE, true), "float -> int"); assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE, true), "float -> long"); assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE, true), "float -> float"); assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE, true), "float -> double"); assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE, true), "float -> boolean"); // test double conversions assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE, true), "double -> char"); assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE, true), "double -> byte"); assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE, true), "double -> short"); assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE, true), "double -> int"); assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE, true), "double -> long"); assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE, true), "double -> float"); assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE, true), "double -> double"); assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE, true), "double -> boolean"); // test boolean conversions assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE, true), "boolean -> char"); assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE, true), "boolean -> byte"); assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE, true), "boolean -> short"); assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE, true), "boolean -> int"); assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE, true), "boolean -> long"); assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE, true), "boolean -> float"); assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE, true), "boolean -> double"); assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true), "boolean -> boolean"); } @Test public void test_isAssignable_Widening() { // test byte conversions assertFalse(ClassUtils.isAssignable(Byte.TYPE, Character.TYPE), "byte -> char"); assertTrue(ClassUtils.isAssignable(Byte.TYPE, Byte.TYPE), "byte -> byte"); assertTrue(ClassUtils.isAssignable(Byte.TYPE, Short.TYPE), "byte -> short"); assertTrue(ClassUtils.isAssignable(Byte.TYPE, Integer.TYPE), "byte -> int"); assertTrue(ClassUtils.isAssignable(Byte.TYPE, Long.TYPE), "byte -> long"); assertTrue(ClassUtils.isAssignable(Byte.TYPE, Float.TYPE), "byte -> float"); assertTrue(ClassUtils.isAssignable(Byte.TYPE, Double.TYPE), "byte -> double"); assertFalse(ClassUtils.isAssignable(Byte.TYPE, Boolean.TYPE), "byte -> boolean"); // test short conversions assertFalse(ClassUtils.isAssignable(Short.TYPE, Character.TYPE), "short -> char"); assertFalse(ClassUtils.isAssignable(Short.TYPE, Byte.TYPE), "short -> byte"); assertTrue(ClassUtils.isAssignable(Short.TYPE, Short.TYPE), "short -> short"); assertTrue(ClassUtils.isAssignable(Short.TYPE, Integer.TYPE), "short -> int"); assertTrue(ClassUtils.isAssignable(Short.TYPE, Long.TYPE), "short -> long"); assertTrue(ClassUtils.isAssignable(Short.TYPE, Float.TYPE), "short -> float"); assertTrue(ClassUtils.isAssignable(Short.TYPE, Double.TYPE), "short -> double"); assertFalse(ClassUtils.isAssignable(Short.TYPE, Boolean.TYPE), "short -> boolean"); // test char conversions assertTrue(ClassUtils.isAssignable(Character.TYPE, Character.TYPE), "char -> char"); assertFalse(ClassUtils.isAssignable(Character.TYPE, Byte.TYPE), "char -> byte"); assertFalse(ClassUtils.isAssignable(Character.TYPE, Short.TYPE), "char -> short"); assertTrue(ClassUtils.isAssignable(Character.TYPE, Integer.TYPE), "char -> int"); assertTrue(ClassUtils.isAssignable(Character.TYPE, Long.TYPE), "char -> long"); assertTrue(ClassUtils.isAssignable(Character.TYPE, Float.TYPE), "char -> float"); assertTrue(ClassUtils.isAssignable(Character.TYPE, Double.TYPE), "char -> double"); assertFalse(ClassUtils.isAssignable(Character.TYPE, Boolean.TYPE), "char -> boolean"); // test int conversions assertFalse(ClassUtils.isAssignable(Integer.TYPE, Character.TYPE), "int -> char"); assertFalse(ClassUtils.isAssignable(Integer.TYPE, Byte.TYPE), "int -> byte"); assertFalse(ClassUtils.isAssignable(Integer.TYPE, Short.TYPE), "int -> short"); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE), "int -> int"); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Long.TYPE), "int -> long"); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Float.TYPE), "int -> float"); assertTrue(ClassUtils.isAssignable(Integer.TYPE, Double.TYPE), "int -> double"); assertFalse(ClassUtils.isAssignable(Integer.TYPE, Boolean.TYPE), "int -> boolean"); // test long conversions assertFalse(ClassUtils.isAssignable(Long.TYPE, Character.TYPE), "long -> char"); assertFalse(ClassUtils.isAssignable(Long.TYPE, Byte.TYPE), "long -> byte"); assertFalse(ClassUtils.isAssignable(Long.TYPE, Short.TYPE), "long -> short"); assertFalse(ClassUtils.isAssignable(Long.TYPE, Integer.TYPE), "long -> int"); assertTrue(ClassUtils.isAssignable(Long.TYPE, Long.TYPE), "long -> long"); assertTrue(ClassUtils.isAssignable(Long.TYPE, Float.TYPE), "long -> float"); assertTrue(ClassUtils.isAssignable(Long.TYPE, Double.TYPE), "long -> double"); assertFalse(ClassUtils.isAssignable(Long.TYPE, Boolean.TYPE), "long -> boolean"); // test float conversions assertFalse(ClassUtils.isAssignable(Float.TYPE, Character.TYPE), "float -> char"); assertFalse(ClassUtils.isAssignable(Float.TYPE, Byte.TYPE), "float -> byte"); assertFalse(ClassUtils.isAssignable(Float.TYPE, Short.TYPE), "float -> short"); assertFalse(ClassUtils.isAssignable(Float.TYPE, Integer.TYPE), "float -> int"); assertFalse(ClassUtils.isAssignable(Float.TYPE, Long.TYPE), "float -> long"); assertTrue(ClassUtils.isAssignable(Float.TYPE, Float.TYPE), "float -> float"); assertTrue(ClassUtils.isAssignable(Float.TYPE, Double.TYPE), "float -> double"); assertFalse(ClassUtils.isAssignable(Float.TYPE, Boolean.TYPE), "float -> boolean"); // test double conversions assertFalse(ClassUtils.isAssignable(Double.TYPE, Character.TYPE), "double -> char"); assertFalse(ClassUtils.isAssignable(Double.TYPE, Byte.TYPE), "double -> byte"); assertFalse(ClassUtils.isAssignable(Double.TYPE, Short.TYPE), "double -> short"); assertFalse(ClassUtils.isAssignable(Double.TYPE, Integer.TYPE), "double -> int"); assertFalse(ClassUtils.isAssignable(Double.TYPE, Long.TYPE), "double -> long"); assertFalse(ClassUtils.isAssignable(Double.TYPE, Float.TYPE), "double -> float"); assertTrue(ClassUtils.isAssignable(Double.TYPE, Double.TYPE), "double -> double"); assertFalse(ClassUtils.isAssignable(Double.TYPE, Boolean.TYPE), "double -> boolean"); // test boolean conversions assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Character.TYPE), "boolean -> char"); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Byte.TYPE), "boolean -> byte"); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Short.TYPE), "boolean -> short"); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Integer.TYPE), "boolean -> int"); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Long.TYPE), "boolean -> long"); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Float.TYPE), "boolean -> float"); assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Double.TYPE), "boolean -> double"); assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE), "boolean -> boolean"); } @Test public void test_isInnerClass_Class() { assertTrue(ClassUtils.isInnerClass(Inner.class)); assertTrue(ClassUtils.isInnerClass(Map.Entry.class)); assertTrue(ClassUtils.isInnerClass(new Cloneable() { // empty }.getClass())); assertFalse(ClassUtils.isInnerClass(this.getClass())); assertFalse(ClassUtils.isInnerClass(String.class)); assertFalse(ClassUtils.isInnerClass(null)); } @Test public void testComparable() { final TreeMap, String> map = new TreeMap<>(ClassUtils.comparator()); map.put(String.class, "lastEntry"); map.toString(); map.put(Character.class, "firstEntry"); map.toString(); assertEquals("firstEntry", map.firstEntry().getValue()); assertEquals(Character.class, map.firstEntry().getKey()); // assertEquals("lastEntry", map.lastEntry().getValue()); assertEquals(String.class, map.lastEntry().getKey()); // map.put(null, "null"); map.toString(); assertEquals("null", map.get(null)); } @Test public void testConstructor() { assertNotNull(new ClassUtils()); final Constructor[] cons = ClassUtils.class.getDeclaredConstructors(); assertEquals(1, cons.length); assertTrue(Modifier.isPublic(cons[0].getModifiers())); assertTrue(Modifier.isPublic(ClassUtils.class.getModifiers())); assertFalse(Modifier.isFinal(ClassUtils.class.getModifiers())); } @Test public void testGetClassByNormalNameArrays() throws ClassNotFoundException { assertEquals(int[].class, ClassUtils.getClass("int[]")); assertEquals(long[].class, ClassUtils.getClass("long[]")); assertEquals(short[].class, ClassUtils.getClass("short[]")); assertEquals(byte[].class, ClassUtils.getClass("byte[]")); assertEquals(char[].class, ClassUtils.getClass("char[]")); assertEquals(float[].class, ClassUtils.getClass("float[]")); assertEquals(double[].class, ClassUtils.getClass("double[]")); assertEquals(boolean[].class, ClassUtils.getClass("boolean[]")); assertEquals(String[].class, ClassUtils.getClass("java.lang.String[]")); assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map.Entry[]")); assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map$Entry[]")); assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.util.Map.Entry;")); assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.util.Map$Entry;")); } @Test public void testGetClassByNormalNameArrays2D() throws ClassNotFoundException { assertEquals(int[][].class, ClassUtils.getClass("int[][]")); assertEquals(long[][].class, ClassUtils.getClass("long[][]")); assertEquals(short[][].class, ClassUtils.getClass("short[][]")); assertEquals(byte[][].class, ClassUtils.getClass("byte[][]")); assertEquals(char[][].class, ClassUtils.getClass("char[][]")); assertEquals(float[][].class, ClassUtils.getClass("float[][]")); assertEquals(double[][].class, ClassUtils.getClass("double[][]")); assertEquals(boolean[][].class, ClassUtils.getClass("boolean[][]")); assertEquals(String[][].class, ClassUtils.getClass("java.lang.String[][]")); } @Test public void testGetClassClassNotFound() throws Exception { assertGetClassThrowsClassNotFound("bool"); assertGetClassThrowsClassNotFound("bool[]"); assertGetClassThrowsClassNotFound("integer[]"); } @Test public void testGetClassInvalidArguments() throws Exception { assertGetClassThrowsNullPointerException(null); assertGetClassThrowsClassNotFound("[][][]"); assertGetClassThrowsClassNotFound("[[]"); assertGetClassThrowsClassNotFound("["); assertGetClassThrowsClassNotFound("java.lang.String]["); assertGetClassThrowsClassNotFound(".hello.world"); assertGetClassThrowsClassNotFound("hello..world"); } @Test public void testGetClassRawPrimitives() throws ClassNotFoundException { assertEquals(int.class, ClassUtils.getClass("int")); assertEquals(long.class, ClassUtils.getClass("long")); assertEquals(short.class, ClassUtils.getClass("short")); assertEquals(byte.class, ClassUtils.getClass("byte")); assertEquals(char.class, ClassUtils.getClass("char")); assertEquals(float.class, ClassUtils.getClass("float")); assertEquals(double.class, ClassUtils.getClass("double")); assertEquals(boolean.class, ClassUtils.getClass("boolean")); assertEquals(void.class, ClassUtils.getClass("void")); } @Test public void testGetClassWithArrayClasses() throws Exception { assertGetClassReturnsClass(String[].class); assertGetClassReturnsClass(int[].class); assertGetClassReturnsClass(long[].class); assertGetClassReturnsClass(short[].class); assertGetClassReturnsClass(byte[].class); assertGetClassReturnsClass(char[].class); assertGetClassReturnsClass(float[].class); assertGetClassReturnsClass(double[].class); assertGetClassReturnsClass(boolean[].class); } @Test public void testGetClassWithArrayClasses2D() throws Exception { assertGetClassReturnsClass(String[][].class); assertGetClassReturnsClass(int[][].class); assertGetClassReturnsClass(long[][].class); assertGetClassReturnsClass(short[][].class); assertGetClassReturnsClass(byte[][].class); assertGetClassReturnsClass(char[][].class); assertGetClassReturnsClass(float[][].class); assertGetClassReturnsClass(double[][].class); assertGetClassReturnsClass(boolean[][].class); } @Test public void testGetComponentType() { final CX[] newArray = {}; @SuppressWarnings("unchecked") final Class classCxArray = (Class) newArray.getClass(); // No type-cast required. final Class componentType = ClassUtils.getComponentType(classCxArray); assertEquals(CX.class, componentType); assertNull(ClassUtils.getComponentType(null)); } @Test public void testGetInnerClass() throws ClassNotFoundException { assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested")); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested")); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested")); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested")); // assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested", true)); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested", true)); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested", true)); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested", true)); // final ClassLoader classLoader = Inner.DeeplyNested.class.getClassLoader(); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested")); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested")); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested")); assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested")); // } @Test public void testGetPublicMethod() throws Exception { // Tests with Collections$UnmodifiableSet final Set set = Collections.unmodifiableSet(new HashSet<>()); final Method isEmptyMethod = ClassUtils.getPublicMethod(set.getClass(), "isEmpty"); assertTrue(Modifier.isPublic(isEmptyMethod.getDeclaringClass().getModifiers())); assertTrue((Boolean) isEmptyMethod.invoke(set)); // Tests with a public Class final Method toStringMethod = ClassUtils.getPublicMethod(Object.class, "toString"); assertEquals(Object.class.getMethod("toString"), toStringMethod); } @Test public void testHierarchyExcludingInterfaces() { final Iterator> iter = ClassUtils.hierarchy(StringParameterizedChild.class).iterator(); assertEquals(StringParameterizedChild.class, iter.next()); assertEquals(GenericParent.class, iter.next()); assertEquals(Object.class, iter.next()); assertFalse(iter.hasNext()); } @Test public void testHierarchyIncludingInterfaces() { final Iterator> iter = ClassUtils.hierarchy(StringParameterizedChild.class, Interfaces.INCLUDE).iterator(); assertEquals(StringParameterizedChild.class, iter.next()); assertEquals(GenericParent.class, iter.next()); assertEquals(GenericConsumer.class, iter.next()); assertEquals(Object.class, iter.next()); assertFalse(iter.hasNext()); } @Test public void testIsPrimitiveOrWrapper() { // test primitive wrapper classes assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.class), "Boolean.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.class), "Byte.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.class), "Character.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.class), "Short.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.class), "Integer.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.class), "Long.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.class), "Double.class"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.class), "Float.class"); // test primitive classes assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.TYPE), "boolean"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.TYPE), "byte"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.TYPE), "char"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.TYPE), "short"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.TYPE), "int"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.TYPE), "long"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.TYPE), "double"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.TYPE), "float"); assertTrue(ClassUtils.isPrimitiveOrWrapper(Void.TYPE), "Void.TYPE"); // others assertFalse(ClassUtils.isPrimitiveOrWrapper(null), "null"); assertFalse(ClassUtils.isPrimitiveOrWrapper(Void.class), "Void.class"); assertFalse(ClassUtils.isPrimitiveOrWrapper(String.class), "String.class"); assertFalse(ClassUtils.isPrimitiveOrWrapper(this.getClass()), "this.getClass()"); } @Test public void testIsPrimitiveWrapper() { // test primitive wrapper classes assertTrue(ClassUtils.isPrimitiveWrapper(Boolean.class), "Boolean.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Byte.class), "Byte.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Character.class), "Character.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Short.class), "Short.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Integer.class), "Integer.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Long.class), "Long.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Double.class), "Double.class"); assertTrue(ClassUtils.isPrimitiveWrapper(Float.class), "Float.class"); // test primitive classes assertFalse(ClassUtils.isPrimitiveWrapper(Boolean.TYPE), "boolean"); assertFalse(ClassUtils.isPrimitiveWrapper(Byte.TYPE), "byte"); assertFalse(ClassUtils.isPrimitiveWrapper(Character.TYPE), "char"); assertFalse(ClassUtils.isPrimitiveWrapper(Short.TYPE), "short"); assertFalse(ClassUtils.isPrimitiveWrapper(Integer.TYPE), "int"); assertFalse(ClassUtils.isPrimitiveWrapper(Long.TYPE), "long"); assertFalse(ClassUtils.isPrimitiveWrapper(Double.TYPE), "double"); assertFalse(ClassUtils.isPrimitiveWrapper(Float.TYPE), "float"); // others assertFalse(ClassUtils.isPrimitiveWrapper(null), "null"); assertFalse(ClassUtils.isPrimitiveWrapper(Void.class), "Void.class"); assertFalse(ClassUtils.isPrimitiveWrapper(Void.TYPE), "Void.TYPE"); assertFalse(ClassUtils.isPrimitiveWrapper(String.class), "String.class"); assertFalse(ClassUtils.isPrimitiveWrapper(this.getClass()), "this.getClass()"); } @Test public void testPrimitivesToWrappers() { // test null // assertNull("null -> null", ClassUtils.primitivesToWrappers(null)); // generates warning assertNull(ClassUtils.primitivesToWrappers((Class[]) null), "null -> null"); // equivalent cast to avoid warning // Other possible casts for null assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(), "empty -> empty"); final Class[] castNull = ClassUtils.primitivesToWrappers((Class) null); // == new Class[]{null} assertArrayEquals(new Class[] {null}, castNull, "(Class) null -> [null]"); // test empty array is returned unchanged assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(ArrayUtils.EMPTY_CLASS_ARRAY), "empty -> empty"); // test an array of various classes final Class[] primitives = new Class[] {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Double.TYPE, Float.TYPE, String.class, ClassUtils.class}; final Class[] wrappers = ClassUtils.primitivesToWrappers(primitives); for (int i = 0; i < primitives.length; i++) { // test each returned wrapper final Class primitive = primitives[i]; final Class expectedWrapper = ClassUtils.primitiveToWrapper(primitive); assertEquals(expectedWrapper, wrappers[i], primitive + " -> " + expectedWrapper); } // test an array of no primitive classes final Class[] noPrimitives = new Class[] {String.class, ClassUtils.class, Void.TYPE}; // This used to return the exact same array, but no longer does. assertNotSame(noPrimitives, ClassUtils.primitivesToWrappers(noPrimitives), "unmodified"); } @Test public void testPrimitiveToWrapper() { // test primitive classes assertEquals(Boolean.class, ClassUtils.primitiveToWrapper(Boolean.TYPE), "boolean -> Boolean.class"); assertEquals(Byte.class, ClassUtils.primitiveToWrapper(Byte.TYPE), "byte -> Byte.class"); assertEquals(Character.class, ClassUtils.primitiveToWrapper(Character.TYPE), "char -> Character.class"); assertEquals(Short.class, ClassUtils.primitiveToWrapper(Short.TYPE), "short -> Short.class"); assertEquals(Integer.class, ClassUtils.primitiveToWrapper(Integer.TYPE), "int -> Integer.class"); assertEquals(Long.class, ClassUtils.primitiveToWrapper(Long.TYPE), "long -> Long.class"); assertEquals(Double.class, ClassUtils.primitiveToWrapper(Double.TYPE), "double -> Double.class"); assertEquals(Float.class, ClassUtils.primitiveToWrapper(Float.TYPE), "float -> Float.class"); // test a few other classes assertEquals(String.class, ClassUtils.primitiveToWrapper(String.class), "String.class -> String.class"); assertEquals(ClassUtils.class, ClassUtils.primitiveToWrapper(ClassUtils.class), "ClassUtils.class -> ClassUtils.class"); assertEquals(Void.TYPE, ClassUtils.primitiveToWrapper(Void.TYPE), "Void.TYPE -> Void.TYPE"); // test null assertNull(ClassUtils.primitiveToWrapper(null), "null -> null"); } // Show the Java bug: https://bugs.java.com/bugdatabase/view_bug.do?bug_id=4071957 // We may have to delete this if a JDK fixes the bug. @Test public void testShowJavaBug() throws Exception { // Tests with Collections$UnmodifiableSet final Set set = Collections.unmodifiableSet(new HashSet<>()); final Method isEmptyMethod = set.getClass().getMethod("isEmpty"); assertThrows(IllegalAccessException.class, () -> isEmptyMethod.invoke(set)); } @Test public void testToClass_object() { // assertNull(ClassUtils.toClass(null)); // generates warning assertNull(ClassUtils.toClass((Object[]) null)); // equivalent explicit cast // Additional varargs tests assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(), "empty -> empty"); final Class[] castNull = ClassUtils.toClass((Object) null); // == new Object[]{null} assertArrayEquals(new Object[] {null}, castNull, "(Object) null -> [null]"); assertSame(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(ArrayUtils.EMPTY_OBJECT_ARRAY)); assertArrayEquals(new Class[] {String.class, Integer.class, Double.class}, ClassUtils.toClass("Test", Integer.valueOf(1), Double.valueOf(99d))); assertArrayEquals(new Class[] {String.class, null, Double.class}, ClassUtils.toClass("Test", null, Double.valueOf(99d))); } @Test public void testWithInterleavingWhitespace() throws ClassNotFoundException { assertEquals(int[].class, ClassUtils.getClass(" int [ ] ")); assertEquals(long[].class, ClassUtils.getClass("\rlong\t[\n]\r")); assertEquals(short[].class, ClassUtils.getClass("\tshort \t\t[]")); assertEquals(byte[].class, ClassUtils.getClass("byte[\t\t\n\r] ")); } @Test public void testWrappersToPrimitives() { // an array with classes to test final Class[] classes = {Boolean.class, Byte.class, Character.class, Short.class, Integer.class, Long.class, Float.class, Double.class, String.class, ClassUtils.class, null}; final Class[] primitives = ClassUtils.wrappersToPrimitives(classes); // now test the result assertEquals(classes.length, primitives.length, "Wrong length of result array"); for (int i = 0; i < classes.length; i++) { final Class expectedPrimitive = ClassUtils.wrapperToPrimitive(classes[i]); assertEquals(expectedPrimitive, primitives[i], classes[i] + " -> " + expectedPrimitive); } } @Test public void testWrappersToPrimitivesEmpty() { final Class[] empty = new Class[0]; assertArrayEquals(empty, ClassUtils.wrappersToPrimitives(empty), "Wrong result for empty input"); } @Test public void testWrappersToPrimitivesNull() { // assertNull("Wrong result for null input", ClassUtils.wrappersToPrimitives(null)); // generates warning assertNull(ClassUtils.wrappersToPrimitives((Class[]) null), "Wrong result for null input"); // equivalent cast // Other possible casts for null assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.wrappersToPrimitives(), "empty -> empty"); final Class[] castNull = ClassUtils.wrappersToPrimitives((Class) null); // == new Class[]{null} assertArrayEquals(new Class[] {null}, castNull, "(Class) null -> [null]"); } @Test public void testWrapperToPrimitive() { // an array with classes to convert final Class[] primitives = {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Float.TYPE, Double.TYPE}; for (final Class primitive : primitives) { final Class wrapperCls = ClassUtils.primitiveToWrapper(primitive); assertFalse(wrapperCls.isPrimitive(), "Still primitive"); assertEquals(primitive, ClassUtils.wrapperToPrimitive(wrapperCls), wrapperCls + " -> " + primitive); } } @Test public void testWrapperToPrimitiveNoWrapper() { assertNull(ClassUtils.wrapperToPrimitive(String.class), "Wrong result for non wrapper class"); } @Test public void testWrapperToPrimitiveNull() { assertNull(ClassUtils.wrapperToPrimitive(null), "Wrong result for null class"); } }