// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "testing/gtest/include/gtest/gtest.h"
#include "tools/gn/err.h"
#include "tools/gn/substitution_pattern.h"

TEST(SubstitutionPattern, ParseLiteral) {
  SubstitutionPattern pattern;
  Err err;
  EXPECT_TRUE(pattern.Parse("This is a literal", nullptr, &err));
  EXPECT_FALSE(err.has_error());
  ASSERT_EQ(1u, pattern.ranges().size());
  EXPECT_EQ(SUBSTITUTION_LITERAL, pattern.ranges()[0].type);
  EXPECT_EQ("This is a literal", pattern.ranges()[0].literal);
}

TEST(SubstitutionPattern, ParseComplex) {
  SubstitutionPattern pattern;
  Err err;
  EXPECT_TRUE(pattern.Parse(
      "AA{{source}}{{source_name_part}}BB{{source_file_part}}", nullptr, &err));
  EXPECT_FALSE(err.has_error());
  ASSERT_EQ(5u, pattern.ranges().size());

  EXPECT_EQ(SUBSTITUTION_LITERAL, pattern.ranges()[0].type);
  EXPECT_EQ("AA", pattern.ranges()[0].literal);
  EXPECT_EQ(SUBSTITUTION_SOURCE, pattern.ranges()[1].type);
  EXPECT_EQ(SUBSTITUTION_SOURCE_NAME_PART, pattern.ranges()[2].type);
  EXPECT_EQ(SUBSTITUTION_LITERAL, pattern.ranges()[3].type);
  EXPECT_EQ("BB", pattern.ranges()[3].literal);
  EXPECT_EQ(SUBSTITUTION_SOURCE_FILE_PART, pattern.ranges()[4].type);
}

TEST(SubstitutionPattern, ParseErrors) {
  SubstitutionPattern pattern;
  Err err;
  EXPECT_FALSE(pattern.Parse("AA{{source", nullptr, &err));
  EXPECT_TRUE(err.has_error());

  err = Err();
  EXPECT_FALSE(pattern.Parse("{{source_of_evil}}", nullptr, &err));
  EXPECT_TRUE(err.has_error());

  err = Err();
  EXPECT_FALSE(pattern.Parse("{{source{{source}}", nullptr, &err));
  EXPECT_TRUE(err.has_error());
}