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#include "googleurl/src/url_canon.h"
#include "googleurl/src/url_canon_stdstring.h"
#include "googleurl/src/url_parse.h"
#include "googleurl/src/url_util.h"
#include "testing/gtest/include/gtest/gtest.h"

TEST(URLUtilTest, FindAndCompareScheme) {
  url_parse::Component found_scheme;

  // Simple case where the scheme is found and matches.
  const char kStr1[] = "http://www.com/";
  EXPECT_TRUE(url_util::FindAndCompareScheme(
      kStr1, static_cast<int>(strlen(kStr1)), "http", NULL));
  EXPECT_TRUE(url_util::FindAndCompareScheme(
      kStr1, static_cast<int>(strlen(kStr1)), "http", &found_scheme));
  EXPECT_TRUE(found_scheme == url_parse::Component(0, 4));

  // A case where the scheme is found and doesn't match.
  EXPECT_FALSE(url_util::FindAndCompareScheme(
      kStr1, static_cast<int>(strlen(kStr1)), "https", &found_scheme));
  EXPECT_TRUE(found_scheme == url_parse::Component(0, 4));

  // A case where there is no scheme.
  const char kStr2[] = "httpfoobar";
  EXPECT_FALSE(url_util::FindAndCompareScheme(
      kStr2, static_cast<int>(strlen(kStr2)), "http", &found_scheme));
  EXPECT_TRUE(found_scheme == url_parse::Component());

  // When there is an empty scheme, it should match the empty scheme.
  const char kStr3[] = ":foo.com/";
  EXPECT_TRUE(url_util::FindAndCompareScheme(
      kStr3, static_cast<int>(strlen(kStr3)), "", &found_scheme));
  EXPECT_TRUE(found_scheme == url_parse::Component(0, 0));

  // But when there is no scheme, it should fail.
  EXPECT_FALSE(url_util::FindAndCompareScheme("", 0, "", &found_scheme));
  EXPECT_TRUE(found_scheme == url_parse::Component());
}

TEST(URLUtilTest, ReplaceComponents) {
  url_parse::Parsed parsed;
  url_canon::RawCanonOutputT<char> output;
  url_parse::Parsed new_parsed;

  // Check that the following calls do not cause crash
  url_canon::Replacements<char> replacements;
  replacements.SetRef("test", url_parse::Component(0, 4));
  url_util::ReplaceComponents(NULL, 0, parsed, replacements, NULL, &output,
                              &new_parsed);
  url_util::ReplaceComponents("", 0, parsed, replacements, NULL, &output,
                              &new_parsed);
  replacements.ClearRef();
  replacements.SetHost("test", url_parse::Component(0, 4));
  url_util::ReplaceComponents(NULL, 0, parsed, replacements, NULL, &output,
                              &new_parsed);
  url_util::ReplaceComponents("", 0, parsed, replacements, NULL, &output,
                              &new_parsed);

  replacements.ClearHost();
  url_util::ReplaceComponents(NULL, 0, parsed, replacements, NULL, &output,
                              &new_parsed);
  url_util::ReplaceComponents("", 0, parsed, replacements, NULL, &output,
                              &new_parsed);
  url_util::ReplaceComponents(NULL, 0, parsed, replacements, NULL, &output,
                              &new_parsed);
  url_util::ReplaceComponents("", 0, parsed, replacements, NULL, &output,
                              &new_parsed);
}