// Copyright 2018 The Amber Authors.
//
// 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 parseried.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "src/amberscript/parser.h"

#include "gtest/gtest.h"

namespace amber {
namespace amberscript {

using AmberScriptParserTest = testing::Test;

TEST_F(AmberScriptParserTest, EmptyInput) {
  std::string in = "";

  Parser parser;
  Result r = parser.Parse(in);
  ASSERT_TRUE(r.IsSuccess()) << r.Error();

  auto script = parser.GetScript();
  ASSERT_TRUE(script != nullptr);
}

TEST_F(AmberScriptParserTest, InvalidStartToken) {
  std::string in = R"(#!amber
# Start comment
1234)";

  Parser parser;
  Result r = parser.Parse(in);
  ASSERT_FALSE(r.IsSuccess());
  EXPECT_EQ("3: expected identifier", r.Error());
}

TEST_F(AmberScriptParserTest, UnknownStartToken) {
  std::string in = "INVALID token";

  Parser parser;
  Result r = parser.Parse(in);
  ASSERT_FALSE(r.IsSuccess());
  EXPECT_EQ("1: unknown token: INVALID", r.Error());
}

}  // namespace amberscript
}  // namespace amber