Improve unit testing of socket API (reland).

chrome/browser/extensions/api/socket/socket_api_unittest.cc

+// Copyright (c) 2012 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 "base/values.h"
+#include "chrome/browser/browser_process_impl.h"
+#include "chrome/browser/extensions/api/socket/socket_api.h"
+#include "chrome/browser/extensions/extension_function_test_utils.h"
+#include "chrome/browser/extensions/test_extension_system.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/test/base/browser_with_test_window_test.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace utils = extension_function_test_utils;
+
+namespace extensions {
+
+class SocketUnitTest : public BrowserWithTestWindowTest {
+ public:
+  virtual void SetUp() {
+    BrowserWithTestWindowTest::SetUp();
+
+    TestExtensionSystem* system = static_cast<TestExtensionSystem*>(
+        ExtensionSystem::Get(browser()->profile()));
+    system->CreateSocketManager();
+
+    extension_ = utils::CreateEmptyExtensionWithLocation(
+        extensions::Extension::LOAD);
+  }
+
+  base::Value* RunFunctionWithExtension(
+      UIThreadExtensionFunction* function, const std::string& args) {
+    function->set_extension(extension_.get());
+    return utils::RunFunctionAndReturnSingleResult(function, args, browser());
+  }
+
+  base::DictionaryValue* RunFunctionAndReturnDict(
+      UIThreadExtensionFunction* function, const std::string& args) {
+    base::Value* result = RunFunctionWithExtension(function, args);
+    return result ? utils::ToDictionary(result) : NULL;
+  }
+
+  base::ListValue* RunFunctionAndReturnList(
+      UIThreadExtensionFunction* function, const std::string& args) {
+    base::Value* result = RunFunctionWithExtension(function, args);
+    return result ? utils::ToList(result) : NULL;
+  }
+
+  void RunFunction(UIThreadExtensionFunction* function,
+                   const std::string& args) {
+    scoped_ptr<base::Value> result(RunFunctionWithExtension(function, args));
+  }
+
+  std::string RunFunctionAndReturnError(UIThreadExtensionFunction* function,
+                                        const std::string& args) {
+    function->set_extension(extension_.get());
+    return utils::RunFunctionAndReturnError(function, args, browser());
+  }
+
+ protected:
+  scoped_refptr<extensions::Extension> extension_;
+};
+
+TEST_F(SocketUnitTest, Create) {
+  // TODO(miket): enable this test. This will require teaching
+  // SocketCreateFunction to do its work on a thread other than IO. Getting
+  // this CL landed was hard enough already, so we're going to save this work
+  // for another day.
+  if (false) {
+    scoped_ptr<base::DictionaryValue> result(RunFunctionAndReturnDict(
+        new SocketCreateFunction(), "[\"tcp\"]"));
+    ASSERT_TRUE(result.get());
+  }
+  {
+    std::string error = RunFunctionAndReturnError(
+        new SocketCreateFunction(), "[\"nonexistent-socket-type\"]");
+    ASSERT_FALSE(error.empty()) << "Expected error. Got nothing instead.";
+  }
+}
+
+}  // namespace extensions