Adding the first set of remote test cases and associated framework.

chrome/test/remoting/remote_test_helper.cc

Index: chrome/test/remoting/remote_test_helper.cc
diff --git a/chrome/test/remoting/remote_test_helper.cc b/chrome/test/remoting/remote_test_helper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..622ee2ede66f3a3c56dc286bf4c4c26b4c9f22fe
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+++ b/chrome/test/remoting/remote_test_helper.cc
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+// 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/test/remoting/remote_test_helper.h"
+
+#include "base/bind.h"
+#include "chrome/test/remoting/waiter.h"
+
+namespace remoting {
+
+Event::Event() : action(Action::None), value(0), modifiers(0) {}
+
+RemoteTestHelper::RemoteTestHelper(content::WebContents* web_content)
+    : web_content_(web_content) {}
+
+// static
+bool RemoteTestHelper::ExecuteScriptAndExtractBool(
+    content::WebContents* web_contents, const std::string& script) {
+  bool result;
+  EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
+      web_contents,
+      "window.domAutomationController.send(" + script + ");",
+      &result));
+
+  return result;
+}
+
+// static
+int RemoteTestHelper::ExecuteScriptAndExtractInt(
+    content::WebContents* web_contents, const std::string& script) {
+  int result;
+  _ASSERT_TRUE(content::ExecuteScriptAndExtractInt(
+      web_contents,
+      "window.domAutomationController.send(" + script + ");",
+      &result));
+
+  return result;
+}
+
+// static
+std::string RemoteTestHelper::ExecuteScriptAndExtractString(
+    content::WebContents* web_contents, const std::string& script) {
+  std::string result;
+  _ASSERT_TRUE(content::ExecuteScriptAndExtractString(
+      web_contents,
+      "window.domAutomationController.send(" + script + ");",
+      &result));
+
+  return result;
+}
+
+void RemoteTestHelper::ExecuteRpc(const std::string& method,
+                                  base::TimeDelta timeout,
+                                  base::TimeDelta interval) {
+  ASSERT_TRUE(content::ExecuteScript(web_content_, method));
+
+  // Wait until we receive a response object from the server.
+  // When this happens the jsonRpc.reponseObject becomes non-null.
+  ConditionalTimeoutWaiter waiter(
+      timeout,
+      interval,
+      base::Bind(
+          &RemoteTestHelper::ExecuteScriptAndExtractBool,
+          web_content_,
+          "jsonRpc.responseObject != null"));
+  EXPECT_TRUE(waiter.Wait());
+}
+
+void RemoteTestHelper::ClearLastEvent() {
+  ExecuteRpc("jsonRpc.clearLastEvent();");
+}
+
+bool RemoteTestHelper::IsValidEvent() {
+  // Call GetLastEvent on the server
+  ExecuteRpc("jsonRpc.getLastEvent()",
+             base::TimeDelta::FromMilliseconds(250),
+             base::TimeDelta::FromMilliseconds(50));
+  return ExecuteScriptAndExtractBool(web_content_,
+                                     "jsonRpc.responseObject.action != 0");
+}
+
+void RemoteTestHelper::GetLastEvent(Event* event) {
+  // Wait for a valid event
+  ConditionalTimeoutWaiter waiter(
+      base::TimeDelta::FromSeconds(2),
+      base::TimeDelta::FromMilliseconds(500),
+      base::Bind(&RemoteTestHelper::IsValidEvent,
+                 base::Unretained(this)));
+  EXPECT_TRUE(waiter.Wait());
+
+  // Extract the event's values
+  event->action = static_cast<Action>(
+      ExecuteScriptAndExtractInt(
+          web_content_,
+          "jsonRpc.responseObject.action"));
+  event->value = ExecuteScriptAndExtractInt(
+      web_content_,
+      "jsonRpc.responseObject.value");
+  event->modifiers = ExecuteScriptAndExtractInt(
+      web_content_,
+      "jsonRpc.responseObject.modifiers");
+}
+
+}  // namespace remoting