/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed 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 com.android.tradefed.result;

import static org.junit.Assert.fail;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;

/** Unit tests for the {@link SnapshotInputStreamSource} class */
@RunWith(JUnit4.class)
public class SnapshotInputStreamSourceTest {
    private static final String FILE_CONTENTS = "These are file contents!";
    private InputStream mInputStream = null;

    @Before
    public void setUp() throws Exception {
        mInputStream = new ByteArrayInputStream(FILE_CONTENTS.getBytes());
    }

    /**
     * Ensure that the {@link SnapshotInputStreamSource#close()} method cleans up the backing file
     * as expected
     */
    @Test
    public void testCancel() {
        final String deletedMsg = "File was deleted";
        final File fakeFile = new File("noexist") {
            @Override
            public boolean delete() {
                throw new RuntimeException(deletedMsg);
            }
        };

        InputStreamSource source =
                new SnapshotInputStreamSource("SnapUnitTest", mInputStream) {
                    @Override
                    File createBackingFile(String name, InputStream stream) {
                        return fakeFile;
                    }
                };

        try {
            source.close();
            fail("Fake file was not deleted");
        } catch (RuntimeException e) {
            if (!deletedMsg.equals(e.getMessage())) {
                // This is not the droi^WRuntimeException you're searching for
                throw e;
            }
        }
    }
}