text: // 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 <limits.h>
  
  #include <string>
  
  #include "base/logging.h"
  #include "base/memory/scoped_ptr.h"
  #include "base/strings/stringprintf.h"
  #include "base/test/simple_test_clock.h"
  #include "net/base/net_log.h"
  #include "net/base/sdch_manager.h"
  #include "net/base/sdch_observer.h"
  #include "testing/gtest/include/gtest/gtest.h"
  #include "url/gurl.h"
  
  namespace net {
  
  // Workaround for http://crbug.com/437794; remove when fixed.
  #if !defined(OS_IOS)
  
  //------------------------------------------------------------------------------
  // Provide sample data and compression results with a sample VCDIFF dictionary.
  // Note an SDCH dictionary has extra meta-data before the VCDIFF dictionary.
  static const char kTestVcdiffDictionary[] = "DictionaryFor"
      "SdchCompression1SdchCompression2SdchCompression3SdchCompression\n";
  
  //------------------------------------------------------------------------------
  
  class MockSdchObserver : public SdchObserver {
   public:
    MockSdchObserver()
        : dictionary_used_notifications_(0),
          get_dictionary_notifications_(0),
          clear_dictionaries_notifications_(0) {}
  
    std::string last_server_hash() const { return last_server_hash_; }
    int dictionary_used_notifications() const {
      return dictionary_used_notifications_;
    }
    const GURL& last_dictionary_request_url() const {
      return last_dictionary_request_url_;
    }
    const GURL& last_dictionary_url() const { return last_dictionary_url_; }
    int get_dictionary_notifications() const {
      return get_dictionary_notifications_;
    }
  
    int clear_dictionary_notifications() const {
      return clear_dictionaries_notifications_;
    }
  
    // SdchObserver implementation
    void OnDictionaryUsed(SdchManager* manager,
                          const std::string& server_hash) override {
      last_server_hash_ = server_hash;
      ++dictionary_used_notifications_;
    }
  
    void OnGetDictionary(SdchManager* manager,
                         const GURL& request_url,
                         const GURL& dictionary_url) override {
      ++get_dictionary_notifications_;
      last_dictionary_request_url_ = request_url;
      last_dictionary_url_ = dictionary_url;
    }
    void OnClearDictionaries(SdchManager* manager) override {
      ++clear_dictionaries_notifications_;
    }
  
   private:
    int dictionary_used_notifications_;
    int get_dictionary_notifications_;
    int clear_dictionaries_notifications_;
  
    std::string last_server_hash_;
    GURL last_dictionary_request_url_;
    GURL last_dictionary_url_;
  
    DISALLOW_COPY_AND_ASSIGN(MockSdchObserver);
  };
  
  class SdchManagerTest : public testing::Test {
   protected:
    SdchManagerTest()
        : sdch_manager_(new SdchManager),
          default_support_(false),
          default_https_support_(false) {
      default_support_ = sdch_manager_->sdch_enabled();
      default_https_support_ = sdch_manager_->secure_scheme_supported();
    }
  
    ~SdchManagerTest() override {}
  
    SdchManager* sdch_manager() { return sdch_manager_.get(); }
  
    // Reset globals back to default state.
    void TearDown() override {
      SdchManager::EnableSdchSupport(default_support_);
      SdchManager::EnableSecureSchemeSupport(default_https_support_);
    }
  
    // Attempt to add a dictionary to the manager and probe for success or
    // failure.
    bool AddSdchDictionary(const std::string& dictionary_text,
                           const GURL& gurl) {
      return sdch_manager_->AddSdchDictionary(dictionary_text, gurl, nullptr) ==
             SDCH_OK;
    }
  
   private:
    scoped_ptr<SdchManager> sdch_manager_;
    bool default_support_;
    bool default_https_support_;
  };
  
  static std::string NewSdchDictionary(const std::string& domain) {
    std::string dictionary;
    if (!domain.empty()) {
      dictionary.append("Domain: ");
      dictionary.append(domain);
      dictionary.append("\n");
    }
    dictionary.append("\n");
    dictionary.append(kTestVcdiffDictionary, sizeof(kTestVcdiffDictionary) - 1);
    return dictionary;
  }
  
  TEST_F(SdchManagerTest, DomainSupported) {
    GURL google_url("http://www.google.com");
  
    SdchManager::EnableSdchSupport(false);
    EXPECT_EQ(SDCH_DISABLED, sdch_manager()->IsInSupportedDomain(google_url));
    SdchManager::EnableSdchSupport(true);
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(google_url));
  }
  
  TEST_F(SdchManagerTest, DomainBlacklisting) {
    GURL test_url("http://www.test.com");
    GURL google_url("http://www.google.com");
  
    sdch_manager()->BlacklistDomain(test_url, SDCH_OK);
    EXPECT_EQ(SDCH_DOMAIN_BLACKLIST_INCLUDES_TARGET,
              sdch_manager()->IsInSupportedDomain(test_url));
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(google_url));
  
    sdch_manager()->BlacklistDomain(google_url, SDCH_OK);
    EXPECT_EQ(SDCH_DOMAIN_BLACKLIST_INCLUDES_TARGET,
              sdch_manager()->IsInSupportedDomain(google_url));
  }
  
  TEST_F(SdchManagerTest, DomainBlacklistingCaseSensitivity) {
    GURL test_url("http://www.TesT.com");
    GURL test2_url("http://www.tEst.com");
  
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(test_url));
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(test2_url));
    sdch_manager()->BlacklistDomain(test_url, SDCH_OK);
    EXPECT_EQ(SDCH_DOMAIN_BLACKLIST_INCLUDES_TARGET,
              sdch_manager()->IsInSupportedDomain(test2_url));
  }
  
  TEST_F(SdchManagerTest, BlacklistingReset) {
    GURL gurl("http://mytest.DoMain.com");
    std::string domain(gurl.host());
  
    sdch_manager()->ClearBlacklistings();
    EXPECT_EQ(sdch_manager()->BlackListDomainCount(domain), 0);
    EXPECT_EQ(sdch_manager()->BlacklistDomainExponential(domain), 0);
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(gurl));
  }
  
  TEST_F(SdchManagerTest, BlacklistingSingleBlacklist) {
    GURL gurl("http://mytest.DoMain.com");
    std::string domain(gurl.host());
    sdch_manager()->ClearBlacklistings();
  
    sdch_manager()->BlacklistDomain(gurl, SDCH_OK);
    EXPECT_EQ(sdch_manager()->BlackListDomainCount(domain), 1);
    EXPECT_EQ(sdch_manager()->BlacklistDomainExponential(domain), 1);
  
    // Check that any domain lookup reduces the blacklist counter.
    EXPECT_EQ(SDCH_DOMAIN_BLACKLIST_INCLUDES_TARGET,
              sdch_manager()->IsInSupportedDomain(gurl));
    EXPECT_EQ(sdch_manager()->BlackListDomainCount(domain), 0);
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(gurl));
  }
  
  TEST_F(SdchManagerTest, BlacklistingExponential) {
    GURL gurl("http://mytest.DoMain.com");
    std::string domain(gurl.host());
    sdch_manager()->ClearBlacklistings();
  
    int exponential = 1;
    for (int i = 1; i < 100; ++i) {
      sdch_manager()->BlacklistDomain(gurl, SDCH_OK);
      EXPECT_EQ(sdch_manager()->BlacklistDomainExponential(domain), exponential);
  
      EXPECT_EQ(sdch_manager()->BlackListDomainCount(domain), exponential);
      EXPECT_EQ(SDCH_DOMAIN_BLACKLIST_INCLUDES_TARGET,
                sdch_manager()->IsInSupportedDomain(gurl));
      EXPECT_EQ(sdch_manager()->BlackListDomainCount(domain), exponential - 1);
  
      // Simulate a large number of domain checks (which eventually remove the
      // blacklisting).
      sdch_manager()->ClearDomainBlacklisting(domain);
      EXPECT_EQ(sdch_manager()->BlackListDomainCount(domain), 0);
      EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(gurl));
  
      // Predict what exponential backoff will be.
      exponential = 1 + 2 * exponential;
      if (exponential < 0)
        exponential = INT_MAX;  // We don't wrap.
    }
  }
  
  TEST_F(SdchManagerTest, CanSetExactMatchDictionary) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Perfect match should work.
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://" + dictionary_domain)));
  }
  
  TEST_F(SdchManagerTest, CanAdvertiseDictionaryOverHTTP) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://" + dictionary_domain)));
  
    // HTTP target URL can advertise dictionary.
    EXPECT_TRUE(sdch_manager()->GetDictionarySet(
        GURL("http://" + dictionary_domain + "/test")));
  }
  
  TEST_F(SdchManagerTest, CanNotAdvertiseDictionaryOverHTTPS) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://" + dictionary_domain)));
  
    // HTTPS target URL should NOT advertise dictionary.
    EXPECT_FALSE(sdch_manager()->GetDictionarySet(
        GURL("https://" + dictionary_domain + "/test")));
  }
  
  TEST_F(SdchManagerTest, CanUseHTTPSDictionaryOverHTTPSIfEnabled) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    SdchManager::EnableSecureSchemeSupport(false);
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("https://" + dictionary_domain)));
    SdchManager::EnableSecureSchemeSupport(true);
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("https://" + dictionary_domain)));
  
    GURL target_url("https://" + dictionary_domain + "/test");
    // HTTPS target URL should advertise dictionary if secure scheme support is
    // enabled.
    EXPECT_TRUE(sdch_manager()->GetDictionarySet(target_url));
  
    // Dictionary should be available.
    std::string client_hash;
    std::string server_hash;
    sdch_manager()->GenerateHash(dictionary_text, &client_hash, &server_hash);
    SdchProblemCode problem_code;
    scoped_ptr<SdchManager::DictionarySet> dict_set(
        sdch_manager()->GetDictionarySetByHash(
            target_url, server_hash, &problem_code));
    EXPECT_EQ(SDCH_OK, problem_code);
    EXPECT_TRUE(dict_set.get());
    EXPECT_TRUE(dict_set->GetDictionary(server_hash));
  }
  
  TEST_F(SdchManagerTest, CanNotUseHTTPDictionaryOverHTTPS) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://" + dictionary_domain)));
  
    GURL target_url("https://" + dictionary_domain + "/test");
    // HTTPS target URL should not advertise dictionary acquired over HTTP even if
    // secure scheme support is enabled.
    SdchManager::EnableSecureSchemeSupport(true);
    EXPECT_FALSE(sdch_manager()->GetDictionarySet(target_url));
  
    std::string client_hash;
    std::string server_hash;
    sdch_manager()->GenerateHash(dictionary_text, &client_hash, &server_hash);
    SdchProblemCode problem_code;
    scoped_ptr<SdchManager::DictionarySet> dict_set(
        sdch_manager()->GetDictionarySetByHash(
            target_url, server_hash, &problem_code));
    EXPECT_FALSE(dict_set.get());
    EXPECT_EQ(SDCH_DICTIONARY_FOUND_HAS_WRONG_SCHEME, problem_code);
  }
  
  TEST_F(SdchManagerTest, CanNotUseHTTPSDictionaryOverHTTP) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    SdchManager::EnableSecureSchemeSupport(true);
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("https://" + dictionary_domain)));
  
    GURL target_url("http://" + dictionary_domain + "/test");
    // HTTP target URL should not advertise dictionary acquired over HTTPS even if
    // secure scheme support is enabled.
    EXPECT_FALSE(sdch_manager()->GetDictionarySet(target_url));
  
    std::string client_hash;
    std::string server_hash;
    sdch_manager()->GenerateHash(dictionary_text, &client_hash, &server_hash);
    SdchProblemCode problem_code;
    scoped_ptr<SdchManager::DictionarySet> dict_set(
        sdch_manager()->GetDictionarySetByHash(
            target_url, server_hash, &problem_code));
    EXPECT_FALSE(dict_set.get());
    EXPECT_EQ(SDCH_DICTIONARY_FOUND_HAS_WRONG_SCHEME, problem_code);
  }
  
  TEST_F(SdchManagerTest, FailToSetDomainMismatchDictionary) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Fail the "domain match" requirement.
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("http://y.z.google.com")));
  }
  
  TEST_F(SdchManagerTest, FailToSetDotHostPrefixDomainDictionary) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Fail the HD with D being the domain and H having a dot requirement.
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("http://w.x.y.z.google.com")));
  }
  
  TEST_F(SdchManagerTest, FailToSetDotHostPrefixDomainDictionaryTrailingDot) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Fail the HD with D being the domain and H having a dot requirement.
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("http://w.x.y.z.google.com.")));
  }
  
  TEST_F(SdchManagerTest, FailToSetRepeatPrefixWithDotDictionary) {
    // Make sure that a prefix that matches the domain postfix won't confuse
    // the validation checks.
    std::string dictionary_domain("www.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Fail the HD with D being the domain and H having a dot requirement.
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("http://www.google.com.www.google.com")));
  }
  
  TEST_F(SdchManagerTest, CanSetLeadingDotDomainDictionary) {
    // Make sure that a prefix that matches the domain postfix won't confuse
    // the validation checks.
    std::string dictionary_domain(".google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Verify that a leading dot in the domain is acceptable, as long as the host
    // name does not contain any dots preceding the matched domain name.
    EXPECT_TRUE(AddSdchDictionary(dictionary_text, GURL("http://www.google.com")));
  }
  
  TEST_F(SdchManagerTest,
         CanSetLeadingDotDomainDictionaryFromURLWithTrailingDot) {
    // Make sure that a prefix that matches the domain postfix won't confuse
    // the validation checks.
    std::string dictionary_domain(".google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Verify that a leading dot in the domain is acceptable, as long as the host
    // name does not contain any dots preceding the matched domain name.
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://www.google.com.")));
  }
  
  TEST_F(SdchManagerTest, CannotSetLeadingDotDomainDictionary) {
    // Make sure that a prefix that matches the domain postfix won't confuse
    // the validation checks.
    std::string dictionary_domain(".google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Verify that a leading dot in the domain does not affect the name containing
    // dots failure.
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("http://www.subdomain.google.com")));
  }
  
  TEST_F(SdchManagerTest, CannotSetLeadingDotDomainDictionaryTrailingDot) {
    // Make sure that a prefix that matches the domain postfix won't confuse
    // the validation checks.
    std::string dictionary_domain(".google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Verify that a trailing period in the URL doesn't affect the check.
    EXPECT_FALSE(AddSdchDictionary(dictionary_text,
                                   GURL("http://www.subdomain.google.com.")));
  }
  
  // Make sure the order of the tests is not helping us or confusing things.
  // See test CanSetExactMatchDictionary above for first try.
  TEST_F(SdchManagerTest, CanStillSetExactMatchDictionary) {
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
  
    // Perfect match should *STILL* work.
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://" + dictionary_domain)));
  }
  
  TEST_F(SdchManagerTest, PathMatch) {
    bool (*PathMatch)(const std::string& path, const std::string& restriction) =
        SdchManager::Dictionary::PathMatch;
    // Perfect match is supported.
    EXPECT_TRUE(PathMatch("/search", "/search"));
    EXPECT_TRUE(PathMatch("/search/", "/search/"));
  
    // Prefix only works if last character of restriction is a slash, or first
    // character in path after a match is a slash. Validate each case separately.
  
    // Rely on the slash in the path (not at the end of the restriction).
    EXPECT_TRUE(PathMatch("/search/something", "/search"));
    EXPECT_TRUE(PathMatch("/search/s", "/search"));
    EXPECT_TRUE(PathMatch("/search/other", "/search"));
    EXPECT_TRUE(PathMatch("/search/something", "/search"));
  
    // Rely on the slash at the end of the restriction.
    EXPECT_TRUE(PathMatch("/search/something", "/search/"));
    EXPECT_TRUE(PathMatch("/search/s", "/search/"));
    EXPECT_TRUE(PathMatch("/search/other", "/search/"));
    EXPECT_TRUE(PathMatch("/search/something", "/search/"));
  
    // Make sure less that sufficient prefix match is false.
    EXPECT_FALSE(PathMatch("/sear", "/search"));
    EXPECT_FALSE(PathMatch("/", "/search"));
    EXPECT_FALSE(PathMatch(std::string(), "/search"));
  
    // Add examples with several levels of direcories in the restriction.
    EXPECT_FALSE(PathMatch("/search/something", "search/s"));
    EXPECT_FALSE(PathMatch("/search/", "/search/s"));
  
    // Make sure adding characters to path will also fail.
    EXPECT_FALSE(PathMatch("/searching", "/search/"));
    EXPECT_FALSE(PathMatch("/searching", "/search"));
  
    // Make sure we're case sensitive.
    EXPECT_FALSE(PathMatch("/ABC", "/abc"));
    EXPECT_FALSE(PathMatch("/abc", "/ABC"));
  }
  
  // The following are only applicable while we have a latency test in the code,
  // and can be removed when that functionality is stripped.
  TEST_F(SdchManagerTest, LatencyTestControls) {
    GURL url("http://www.google.com");
    GURL url2("http://www.google2.com");
  
    // First make sure we default to false.
    EXPECT_FALSE(sdch_manager()->AllowLatencyExperiment(url));
    EXPECT_FALSE(sdch_manager()->AllowLatencyExperiment(url2));
  
    // That we can set each to true.
    sdch_manager()->SetAllowLatencyExperiment(url, true);
    EXPECT_TRUE(sdch_manager()->AllowLatencyExperiment(url));
    EXPECT_FALSE(sdch_manager()->AllowLatencyExperiment(url2));
  
    sdch_manager()->SetAllowLatencyExperiment(url2, true);
    EXPECT_TRUE(sdch_manager()->AllowLatencyExperiment(url));
    EXPECT_TRUE(sdch_manager()->AllowLatencyExperiment(url2));
  
    // And can reset them to false.
    sdch_manager()->SetAllowLatencyExperiment(url, false);
    EXPECT_FALSE(sdch_manager()->AllowLatencyExperiment(url));
    EXPECT_TRUE(sdch_manager()->AllowLatencyExperiment(url2));
  
    sdch_manager()->SetAllowLatencyExperiment(url2, false);
    EXPECT_FALSE(sdch_manager()->AllowLatencyExperiment(url));
    EXPECT_FALSE(sdch_manager()->AllowLatencyExperiment(url2));
  }
  
  TEST_F(SdchManagerTest, CanUseMultipleManagers) {
    SdchManager second_manager;
  
    std::string dictionary_domain_1("x.y.z.google.com");
    std::string dictionary_domain_2("x.y.z.chromium.org");
  
    std::string dictionary_text_1(NewSdchDictionary(dictionary_domain_1));
    std::string dictionary_text_2(NewSdchDictionary(dictionary_domain_2));
  
    std::string tmp_hash;
    std::string server_hash_1;
    std::string server_hash_2;
  
    SdchManager::GenerateHash(dictionary_text_1, &tmp_hash, &server_hash_1);
    SdchManager::GenerateHash(dictionary_text_2, &tmp_hash, &server_hash_2);
  
    // Confirm that if you add directories to one manager, you
    // can't get them from the other.
    EXPECT_TRUE(AddSdchDictionary(dictionary_text_1,
                                  GURL("http://" + dictionary_domain_1)));
    scoped_ptr<SdchManager::DictionarySet> dict_set;
  
    SdchProblemCode problem_code;
    dict_set = sdch_manager()->GetDictionarySetByHash(
        GURL("http://" + dictionary_domain_1 + "/random_url"),
        server_hash_1, &problem_code);
    EXPECT_TRUE(dict_set);
    EXPECT_TRUE(dict_set->GetDictionary(server_hash_1));
    EXPECT_EQ(SDCH_OK, problem_code);
  
    second_manager.AddSdchDictionary(
        dictionary_text_2, GURL("http://" + dictionary_domain_2), nullptr);
    dict_set = second_manager.GetDictionarySetByHash(
        GURL("http://" + dictionary_domain_2 + "/random_url"),
        server_hash_2, &problem_code);
    EXPECT_TRUE(dict_set);
    EXPECT_TRUE(dict_set->GetDictionary(server_hash_2));
    EXPECT_EQ(SDCH_OK, problem_code);
  
    dict_set = sdch_manager()->GetDictionarySetByHash(
        GURL("http://" + dictionary_domain_2 + "/random_url"),
        server_hash_2, &problem_code);
    EXPECT_FALSE(dict_set);
    EXPECT_EQ(SDCH_DICTIONARY_HASH_NOT_FOUND, problem_code);
  
    dict_set = second_manager.GetDictionarySetByHash(
        GURL("http://" + dictionary_domain_1 + "/random_url"),
        server_hash_1, &problem_code);
    EXPECT_FALSE(dict_set);
    EXPECT_EQ(SDCH_DICTIONARY_HASH_NOT_FOUND, problem_code);
  }
  
  TEST_F(SdchManagerTest, HttpsCorrectlySupported) {
    GURL url("http://www.google.com");
    GURL secure_url("https://www.google.com");
  
    bool expect_https_support = true;
  
    SdchProblemCode expected_code =
        expect_https_support ? SDCH_OK : SDCH_SECURE_SCHEME_NOT_SUPPORTED;
  
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(url));
    EXPECT_EQ(expected_code, sdch_manager()->IsInSupportedDomain(secure_url));
  
    SdchManager::EnableSecureSchemeSupport(!expect_https_support);
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(url));
    EXPECT_NE(expected_code, sdch_manager()->IsInSupportedDomain(secure_url));
  }
  
  TEST_F(SdchManagerTest, ClearDictionaryData) {
    std::string dictionary_domain("x.y.z.google.com");
    GURL blacklist_url("http://bad.chromium.org");
  
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
    std::string tmp_hash;
    std::string server_hash;
  
    SdchManager::GenerateHash(dictionary_text, &tmp_hash, &server_hash);
  
    EXPECT_TRUE(AddSdchDictionary(dictionary_text,
                                  GURL("http://" + dictionary_domain)));
  
    scoped_ptr<SdchManager::DictionarySet> dict_set;
  
    SdchProblemCode problem_code;
    dict_set = sdch_manager()->GetDictionarySetByHash(
        GURL("http://" + dictionary_domain + "/random_url"),
        server_hash, &problem_code);
    EXPECT_TRUE(dict_set);
    EXPECT_TRUE(dict_set->GetDictionary(server_hash));
    EXPECT_EQ(SDCH_OK, problem_code);
  
    sdch_manager()->BlacklistDomain(GURL(blacklist_url), SDCH_OK);
    EXPECT_EQ(SDCH_DOMAIN_BLACKLIST_INCLUDES_TARGET,
              sdch_manager()->IsInSupportedDomain(blacklist_url));
  
    sdch_manager()->ClearData();
  
    dict_set = sdch_manager()->GetDictionarySetByHash(
        GURL("http://" + dictionary_domain + "/random_url"),
        server_hash, &problem_code);
    EXPECT_FALSE(dict_set);
    EXPECT_EQ(SDCH_DICTIONARY_HASH_NOT_FOUND, problem_code);
    EXPECT_EQ(SDCH_OK, sdch_manager()->IsInSupportedDomain(blacklist_url));
  }
  
  TEST_F(SdchManagerTest, GetDictionaryNotification) {
    GURL test_request_gurl(GURL("http://www.example.com/data"));
    GURL test_dictionary_gurl(GURL("http://www.example.com/dict"));
    MockSdchObserver observer;
    sdch_manager()->AddObserver(&observer);
  
    EXPECT_EQ(0, observer.get_dictionary_notifications());
    sdch_manager()->OnGetDictionary(test_request_gurl, test_dictionary_gurl);
    EXPECT_EQ(1, observer.get_dictionary_notifications());
    EXPECT_EQ(test_request_gurl, observer.last_dictionary_request_url());
    EXPECT_EQ(test_dictionary_gurl, observer.last_dictionary_url());
  
    sdch_manager()->RemoveObserver(&observer);
    sdch_manager()->OnGetDictionary(test_request_gurl, test_dictionary_gurl);
    EXPECT_EQ(1, observer.get_dictionary_notifications());
    EXPECT_EQ(test_request_gurl, observer.last_dictionary_request_url());
    EXPECT_EQ(test_dictionary_gurl, observer.last_dictionary_url());
  }
  
  TEST_F(SdchManagerTest, ExpirationCheckedProperly) {
    // Create an SDCH dictionary with an expiration time in the past.
    std::string dictionary_domain("x.y.z.google.com");
    std::string dictionary_text(base::StringPrintf(
        "Domain: %s\nMax-age: 0\n\n", dictionary_domain.c_str()));
    dictionary_text.append(
        kTestVcdiffDictionary, sizeof(kTestVcdiffDictionary) - 1);
    std::string client_hash;
    std::string server_hash;
    SdchManager::GenerateHash(dictionary_text, &client_hash, &server_hash);
    GURL target_gurl("http://" + dictionary_domain);
    AddSdchDictionary(dictionary_text, target_gurl);
  
    // It should be visible if looked up by hash whether expired or not.
    scoped_ptr<base::SimpleTestClock> clock(new base::SimpleTestClock);
    clock->SetNow(base::Time::Now());
    clock->Advance(base::TimeDelta::FromMinutes(5));
    SdchProblemCode problem_code;
    scoped_ptr<SdchManager::DictionarySet> hash_set(
        sdch_manager()->GetDictionarySetByHash(
            target_gurl, server_hash, &problem_code).Pass());
    ASSERT_TRUE(hash_set);
    ASSERT_EQ(SDCH_OK, problem_code);
    const_cast<SdchManager::Dictionary*>(
        hash_set->GetDictionary(server_hash))->SetClockForTesting(
        clock.Pass());
  
    // Make sure it's not visible for advertisement, but is visible
    // if looked up by hash.
    EXPECT_FALSE(sdch_manager()->GetDictionarySet(target_gurl));
    EXPECT_TRUE(sdch_manager()->GetDictionarySetByHash(
        target_gurl, server_hash, &problem_code));
    EXPECT_EQ(SDCH_OK, problem_code);
  }
  
  TEST_F(SdchManagerTest, SdchOnByDefault) {
    GURL google_url("http://www.google.com");
    scoped_ptr<SdchManager> sdch_manager(new SdchManager);
  
    EXPECT_EQ(SDCH_OK, sdch_manager->IsInSupportedDomain(google_url));
    SdchManager::EnableSdchSupport(false);
    EXPECT_EQ(SDCH_DISABLED, sdch_manager->IsInSupportedDomain(google_url));
  }
  
  // Confirm dispatch of notification.
  TEST_F(SdchManagerTest, SdchDictionaryUsed) {
    MockSdchObserver observer;
    sdch_manager()->AddObserver(&observer);
  
    EXPECT_EQ(0, observer.dictionary_used_notifications());
    sdch_manager()->OnDictionaryUsed("xyzzy");
    EXPECT_EQ(1, observer.dictionary_used_notifications());
    EXPECT_EQ("xyzzy", observer.last_server_hash());
  
    std::string dictionary_domain("x.y.z.google.com");
    GURL target_gurl("http://" + dictionary_domain);
    std::string dictionary_text(NewSdchDictionary(dictionary_domain));
    std::string client_hash;
    std::string server_hash;
    SdchManager::GenerateHash(dictionary_text, &client_hash, &server_hash);
    EXPECT_TRUE(AddSdchDictionary(dictionary_text, target_gurl));
    EXPECT_EQ("xyzzy", observer.last_server_hash());
    EXPECT_EQ(1, observer.dictionary_used_notifications());
  
    EXPECT_TRUE(sdch_manager()->GetDictionarySet(target_gurl));
    EXPECT_EQ("xyzzy", observer.last_server_hash());
    EXPECT_EQ(1, observer.dictionary_used_notifications());
  
    sdch_manager()->RemoveObserver(&observer);
    EXPECT_EQ(1, observer.dictionary_used_notifications());
    EXPECT_EQ("xyzzy", observer.last_server_hash());
    sdch_manager()->OnDictionaryUsed("plugh");
    EXPECT_EQ(1, observer.dictionary_used_notifications());
    EXPECT_EQ("xyzzy", observer.last_server_hash());
  }
  
  #else
  
  TEST(SdchManagerTest, SdchOffByDefault) {
    GURL google_url("http://www.google.com");
    scoped_ptr<SdchManager> sdch_manager(new SdchManager);
  
    EXPECT_EQ(SDCH_DISABLED, sdch_manager->IsInSupportedDomain(google_url));
    SdchManager::EnableSdchSupport(true);
    EXPECT_EQ(SDCH_OK, sdch_manager->IsInSupportedDomain(google_url));
  }
  
  #endif  // !defined(OS_IOS)
  
  }  // namespace net
  