Introduce HostID and de-couple Extensions from "script injection System" [browser side]

chrome/browser/extensions/extension_user_script_loader_unittest.cc

 // 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 "chrome/browser/extensions/user_script_loader.h"
+#include "chrome/browser/extensions/extension_user_script_loader.h"
 
 #include <set>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_thread.h"
+#include "extensions/common/host_id.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 using extensions::URLPatternSet;
 
 namespace {
 
 static void AddPattern(URLPatternSet* extent, const std::string& pattern) {
   int schemes = URLPattern::SCHEME_ALL;
   extent->AddPattern(URLPattern(schemes, pattern));
 }
 }
 
 namespace extensions {
 
 // Test bringing up a script loader on a specific directory, putting a script
 // in there, etc.
 
-class UserScriptLoaderTest : public testing::Test,
-                             public content::NotificationObserver {
+class ExtensionUserScriptLoaderTest : public testing::Test,
+                                      public content::NotificationObserver {
  public:
-  UserScriptLoaderTest() : shared_memory_(NULL) {}
+  ExtensionUserScriptLoaderTest() : shared_memory_(NULL) {}
 
   void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 
     // Register for all user script notifications.
     registrar_.Add(this,
                    extensions::NOTIFICATION_USER_SCRIPTS_UPDATED,
                    content::NotificationService::AllSources());
 
-    // UserScriptLoader posts tasks to the file thread so make the current
-    // thread look like one.
+    // ExtensionUserScriptLoader posts tasks to the file thread so make the
+    // current thread look like one.
     file_thread_.reset(new content::TestBrowserThread(
         BrowserThread::FILE, base::MessageLoop::current()));
     ui_thread_.reset(new content::TestBrowserThread(
         BrowserThread::UI, base::MessageLoop::current()));
   }
 
   void TearDown() override {
     file_thread_.reset();
     ui_thread_.reset();
   }
@@ skipping 17 matching lines @@
   base::MessageLoopForUI message_loop_;
 
   scoped_ptr<content::TestBrowserThread> file_thread_;
   scoped_ptr<content::TestBrowserThread> ui_thread_;
 
   // Updated to the script shared memory when we get notified.
   base::SharedMemory* shared_memory_;
 };
 
 // Test that we get notified even when there are no scripts.
-TEST_F(UserScriptLoaderTest, NoScripts) {
+TEST_F(ExtensionUserScriptLoaderTest, NoScripts) {
   TestingProfile profile;
-  UserScriptLoader loader(&profile,
-                          std::string() /* owner_extension_id */,
-                          true /* listen_for_extension_system_loaded */);
+  ExtensionUserScriptLoader loader(
+      &profile,
+      HostID(),
+      true /* listen_for_extension_system_loaded */);
   loader.StartLoad();
   message_loop_.PostTask(FROM_HERE, base::MessageLoop::QuitClosure());
   message_loop_.Run();
 
   ASSERT_TRUE(shared_memory_ != NULL);
 }
 
-TEST_F(UserScriptLoaderTest, Parse1) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse1) {
   const std::string text(
     "// This is my awesome script\n"
     "// It does stuff.\n"
     "// ==UserScript==   trailing garbage\n"
     "// @name foobar script\n"
     "// @namespace http://www.google.com/\n"
     "// @include *mail.google.com*\n"
     "// \n"
     "// @othergarbage\n"
     "// @include *mail.yahoo.com*\r\n"
     "// @include  \t *mail.msn.com*\n" // extra spaces after "@include" OK
     "//@include not-recognized\n" // must have one space after "//"
     "// ==/UserScript==  trailing garbage\n"
     "\n"
     "\n"
     "alert('hoo!');\n");
 
   UserScript script;
-  EXPECT_TRUE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_TRUE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
   ASSERT_EQ(3U, script.globs().size());
   EXPECT_EQ("*mail.google.com*", script.globs()[0]);
   EXPECT_EQ("*mail.yahoo.com*", script.globs()[1]);
   EXPECT_EQ("*mail.msn.com*", script.globs()[2]);
 }
 
-TEST_F(UserScriptLoaderTest, Parse2) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse2) {
   const std::string text("default to @include *");
 
   UserScript script;
-  EXPECT_TRUE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_TRUE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
   ASSERT_EQ(1U, script.globs().size());
   EXPECT_EQ("*", script.globs()[0]);
 }
 
-TEST_F(UserScriptLoaderTest, Parse3) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse3) {
   const std::string text(
     "// ==UserScript==\n"
     "// @include *foo*\n"
     "// ==/UserScript=="); // no trailing newline
 
   UserScript script;
-  UserScriptLoader::ParseMetadataHeader(text, &script);
+  ExtensionUserScriptLoader::ParseMetadataHeader(text, &script);
   ASSERT_EQ(1U, script.globs().size());
   EXPECT_EQ("*foo*", script.globs()[0]);
 }
 
-TEST_F(UserScriptLoaderTest, Parse4) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse4) {
   const std::string text(
     "// ==UserScript==\n"
     "// @match http://*.mail.google.com/*\n"
     "// @match  \t http://mail.yahoo.com/*\n"
     "// ==/UserScript==\n");
 
   URLPatternSet expected_patterns;
   AddPattern(&expected_patterns, "http://*.mail.google.com/*");
   AddPattern(&expected_patterns, "http://mail.yahoo.com/*");
 
   UserScript script;
-  EXPECT_TRUE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_TRUE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
   EXPECT_EQ(0U, script.globs().size());
   EXPECT_EQ(expected_patterns, script.url_patterns());
 }
 
-TEST_F(UserScriptLoaderTest, Parse5) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse5) {
   const std::string text(
     "// ==UserScript==\n"
     "// @match http://*mail.google.com/*\n"
     "// ==/UserScript==\n");
 
   // Invalid @match value.
   UserScript script;
-  EXPECT_FALSE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_FALSE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
 }
 
-TEST_F(UserScriptLoaderTest, Parse6) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse6) {
   const std::string text(
     "// ==UserScript==\n"
     "// @include http://*.mail.google.com/*\n"
     "// @match  \t http://mail.yahoo.com/*\n"
     "// ==/UserScript==\n");
 
   // Allowed to match @include and @match.
   UserScript script;
-  EXPECT_TRUE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_TRUE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
 }
 
-TEST_F(UserScriptLoaderTest, Parse7) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse7) {
   // Greasemonkey allows there to be any leading text before the comment marker.
   const std::string text(
     "// ==UserScript==\n"
     "adsasdfasf// @name hello\n"
     "  // @description\twiggity woo\n"
     "\t// @match  \t http://mail.yahoo.com/*\n"
     "// ==/UserScript==\n");
 
   UserScript script;
-  EXPECT_TRUE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_TRUE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
   ASSERT_EQ("hello", script.name());
   ASSERT_EQ("wiggity woo", script.description());
   ASSERT_EQ(1U, script.url_patterns().patterns().size());
   EXPECT_EQ("http://mail.yahoo.com/*",
             script.url_patterns().begin()->GetAsString());
 }
 
-TEST_F(UserScriptLoaderTest, Parse8) {
+TEST_F(ExtensionUserScriptLoaderTest, Parse8) {
   const std::string text(
     "// ==UserScript==\n"
     "// @name myscript\n"
     "// @match http://www.google.com/*\n"
     "// @exclude_match http://www.google.com/foo*\n"
     "// ==/UserScript==\n");
 
   UserScript script;
-  EXPECT_TRUE(UserScriptLoader::ParseMetadataHeader(text, &script));
+  EXPECT_TRUE(ExtensionUserScriptLoader::ParseMetadataHeader(text, &script));
   ASSERT_EQ("myscript", script.name());
   ASSERT_EQ(1U, script.url_patterns().patterns().size());
   EXPECT_EQ("http://www.google.com/*",
             script.url_patterns().begin()->GetAsString());
   ASSERT_EQ(1U, script.exclude_url_patterns().patterns().size());
   EXPECT_EQ("http://www.google.com/foo*",
             script.exclude_url_patterns().begin()->GetAsString());
 }
 
-TEST_F(UserScriptLoaderTest, SkipBOMAtTheBeginning) {
+TEST_F(ExtensionUserScriptLoaderTest, SkipBOMAtTheBeginning) {
   base::FilePath path = temp_dir_.path().AppendASCII("script.user.js");
   const std::string content("\xEF\xBB\xBF alert('hello');");
   size_t written = base::WriteFile(path, content.c_str(), content.size());
   ASSERT_EQ(written, content.size());
 
   UserScript user_script;
   user_script.js_scripts().push_back(
       UserScript::File(temp_dir_.path(), path.BaseName(), GURL()));
 
   UserScriptList user_scripts;
   user_scripts.push_back(user_script);
 
-  UserScriptLoader::LoadScriptsForTest(&user_scripts);
+  TestingProfile profile;
+  ExtensionUserScriptLoader loader(
+      &profile,
+      HostID(),
+      true /* listen_for_extension_system_loaded */);
+  loader.LoadScriptsForTest(&user_scripts);
 
   EXPECT_EQ(content.substr(3),
             user_scripts[0].js_scripts()[0].GetContent().as_string());
 }
 
-TEST_F(UserScriptLoaderTest, LeaveBOMNotAtTheBeginning) {
+TEST_F(ExtensionUserScriptLoaderTest, LeaveBOMNotAtTheBeginning) {
   base::FilePath path = temp_dir_.path().AppendASCII("script.user.js");
   const std::string content("alert('here's a BOOM: \xEF\xBB\xBF');");
   size_t written = base::WriteFile(path, content.c_str(), content.size());
   ASSERT_EQ(written, content.size());
 
   UserScript user_script;
   user_script.js_scripts().push_back(UserScript::File(
       temp_dir_.path(), path.BaseName(), GURL()));
 
   UserScriptList user_scripts;
   user_scripts.push_back(user_script);
 
-  UserScriptLoader::LoadScriptsForTest(&user_scripts);
+  TestingProfile profile;
+  ExtensionUserScriptLoader loader(
+      &profile,
+      HostID(),
+      true /* listen_for_extension_system_loaded */);
+  loader.LoadScriptsForTest(&user_scripts);
 
   EXPECT_EQ(content, user_scripts[0].js_scripts()[0].GetContent().as_string());
 }
 
 }  // namespace extensions