Add a config class for the settings reset prompt.

chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_config_unittest.cc

Index: chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_config_unittest.cc
diff --git a/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_config_unittest.cc b/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_config_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e9ed56ca3b795f746cfdb5c0805cb211e8a0ccbc
--- /dev/null
+++ b/chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_config_unittest.cc
@@ -0,0 +1,189 @@
+// Copyright 2017 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 "chrome/browser/safe_browsing/settings_reset_prompt/settings_reset_prompt_config.h"
+
+#include <map>
+#include <set>
+
+#include "base/strings/stringprintf.h"
+#include "base/test/scoped_feature_list.h"
+#include "components/variations/variations_params_manager.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace safe_browsing {
+
+const char kTrialName[] = "trial";
+// A SHA256 hash for "mydomain.com".
+const char kDomainHash[] =
+    "0a79eaf6adb7b1e60d3fa548aa63105f525a00448efbb59ee965b9351a90ac31";
+
+// Test class that initializes a ScopedFeatureList so that all tests
+// start off with all features disabled.
+class SettingsResetPromptConfigTest : public ::testing::Test {
+ protected:
+  typedef std::map<std::string, std::string> Parameters;
+
+  // Sets the settings reset prompt feature parameters, which has the
+  // side-effect of also enabling the feature.
+  void SetFeatureParams(const Parameters& params) {
+    static std::set<std::string> features = {kSettingsResetPrompt.name};
+
+    params_manager_.ClearAllVariationParams();
+    params_manager_.SetVariationParamsWithFeatureAssociations(kTrialName,
+                                                              params, features);
+  }
+
+  void SetDefaultFeatureParams() {
+    Parameters default_params = {
+        {"domain_hashes", base::StringPrintf("{\"%s\": \"1\"}", kDomainHash)}};
+    SetFeatureParams(default_params);
+  }
+
+  variations::testing::VariationParamsManager params_manager_;
+  base::test::ScopedFeatureList scoped_feature_list_;
+};
+
+TEST_F(SettingsResetPromptConfigTest, IsPromptEnabled) {
+  EXPECT_FALSE(SettingsResetPromptConfig::IsPromptEnabled());
+
+  SetDefaultFeatureParams();
+  EXPECT_TRUE(SettingsResetPromptConfig::IsPromptEnabled());
+}
+
+TEST_F(SettingsResetPromptConfigTest, Create) {
+  // Should return nullptr when feature is not enabled.
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  scoped_feature_list_.InitAndEnableFeature(kSettingsResetPrompt);
+
+  // Check cases where |Create()| should return nullptr because of bad
+  // domain_hashes parameter.
+
+  // Parameter is missing.
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+  SetFeatureParams(Parameters());
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Parameter is an empty string.
+  SetFeatureParams(Parameters({{"domain_hashes", ""}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Invalid JSON.
+  SetFeatureParams(Parameters({{"domain_hashes", "bad json"}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Parameter is not a JSON dictionary.
+  SetFeatureParams(Parameters({{"domain_hashes", "[3]"}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Bad dictionary key.
+  SetFeatureParams(Parameters({{"domain_hashes", "\"bad key\": \"1\""}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Dictionary key is too short.
+  SetFeatureParams(Parameters({{"domain_hashes", "\"1234abc\": \"1\""}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Dictionary key has correct length, but is not a hex string.
+  std::string non_hex_key(64, 'x');
+  SetFeatureParams(
+      Parameters({{"domain_hashes", base::StringPrintf("{\"%s\": \"1\"}",
+                                                       non_hex_key.c_str())}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Correct key but non-integer value.
+  SetFeatureParams(Parameters(
+      {{"domain_hashes",
+        base::StringPrintf("{\"%s\": \"not integer\"}", kDomainHash)}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Correct key but integer value that is too big.
+  std::string too_big_int(99, '1');
+  SetFeatureParams(Parameters(
+      {{"domain_hashes", base::StringPrintf("{\"%s\": \"%s\"}", kDomainHash,
+                                            too_big_int.c_str())}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Correct key but negative integer value.
+  SetFeatureParams(
+      Parameters({{"domain_hashes",
+                   base::StringPrintf("{\"%s\": \"-2\"}", kDomainHash)}}));
+  EXPECT_FALSE(SettingsResetPromptConfig::Create());
+
+  // Should return non-nullptr with a correct set of parameters.
+  SetDefaultFeatureParams();
+  EXPECT_TRUE(SettingsResetPromptConfig::Create());
+}
+
+TEST_F(SettingsResetPromptConfigTest, UrlToResetDomainId) {
+  SetDefaultFeatureParams();
+  auto config = SettingsResetPromptConfig::Create();
+  ASSERT_TRUE(config);
+
+  // Should return negative value for URL with no match in the config.
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://www.hello.com")), 0);
+
+  // Should return 1, which is "mydomain.com"'s ID.
+  EXPECT_EQ(config->UrlToResetDomainId(GURL("http://www.sub.mydomain.com")), 1);
+  EXPECT_EQ(config->UrlToResetDomainId(GURL("http://www.mydomain.com")), 1);
+  EXPECT_EQ(config->UrlToResetDomainId(GURL("http://mydomain.com")), 1);
+
+  // These URLs should not match "mydomain.com".
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://mydomain")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://mydomain.org")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://prefixmydomain.com")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://mydomain.com.com")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://www.mydomain.com.com")), 0);
+
+  // Should return negative value for invalid URLs.
+  EXPECT_LT(config->UrlToResetDomainId(GURL("htp://mydomain.com")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://mydomain com")), 0);
+}
+
+TEST_F(SettingsResetPromptConfigTest, UrlToResetDomainIdTLDs) {
+  // Ensure that we do not match top level or registry domains even in the
+  // presence of faulty config data that would match those.
+
+  // Hash for "com".
+  const char kTLDHash1[] =
+      "71b4f3a3748cd6843c01e293e701fce769f52381821e21daf2ff4fe9ea57a6f3";
+  // Hash for "co.uk".
+  const char kTLDHash2[] =
+      "ad4fad2f5e5fb480ff7f9f648c6b20bbd5e44362d86821e29d30e65e626299b0";
+  // Hash for "uk".
+  const char kTLDHash3[] =
+      "83116acf18e4dc4414762f584ff43d9979ff2c2b0e9e48fbc97b21e23d7004ec";
+  // Hash for "com.br".
+  const char kTLDHash4[] =
+      "1d9c4ffc5429a9b4529abf6fbe9f20b52b7401c8f0fed46c7ed67b1e3153932c";
+  // Hash for private registry domain "appspot.com".
+  const char kTLDHash5[] =
+      "bffd48c8162466106a84f42945bfbbcfe501c9f0931219e02ce46e275f05ba51";
+
+  SetFeatureParams(Parameters(
+      {{"domain_hashes",
+        base::StringPrintf(
+            "{\"%s\": \"1\", \"%s\": \"2\", \"%s\": \"3\", \"%s\": \"4\", "
+            "\"%s\": \"5\"}",
+            kTLDHash1, kTLDHash2, kTLDHash3, kTLDHash4, kTLDHash5)}}));
+  auto config = SettingsResetPromptConfig::Create();
+  ASSERT_TRUE(config);
+
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://something.com")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://something.co.uk")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://something.uk")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://something.com.br")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://something.appspot.com")),
+            0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://com")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://co.uk")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://uk")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://com.br")), 0);
+  EXPECT_LT(config->UrlToResetDomainId(GURL("http://appspot.com")), 0);
+}
+
+}  // namespace safe_browsing