[Blimp] Adds blimp engine browser test framework and LoadUrl test.

blimp/test/engine_browsertest.cc

+// Copyright 2016 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/memory/ptr_util.h"
+#include "blimp/test/blimp_browser_test.h"
+#include "blimp/test/test_client.h"
+#include "content/public/test/browser_test.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/geometry/size.h"
+#include "url/gurl.h"
+
+using ::testing::InvokeWithoutArgs;
+
+namespace blimp {
+namespace {
+
+const int kDummyTabId = 0;
+
+// Uses a headless client session to test a full engine.
+class EngineBrowserTest : public BlimpBrowserTest {
+ public:
+  EngineBrowserTest() {}
+
+ protected:
+  void SetUpOnMainThread() override {
+    // Create a headless client on UI thread.
+    client_session_.reset(new TestClientSession);
+
+    // Set feature delegates.
+    client_session_->GetNavigationFeature()->SetDelegate(
+        kDummyTabId, &client_nav_feature_delegate_);
+    client_session_->GetRenderWidgetFeature()->SetDelegate(
+        kDummyTabId, &client_rw_feature_delegate_);
+    client_session_->GetImeFeature()->set_delegate(
+        &client_ime_feature_delegate_);
+
+    BlimpBrowserTest::SetUpOnMainThread();
+  }
+
+  MockNavigationFeatureDelegate client_nav_feature_delegate_;
+  MockRenderWidgetFeatureDelegate client_rw_feature_delegate_;
+  MockImeFeatureDelegate client_ime_feature_delegate_;
+  std::unique_ptr<TestClientSession> client_session_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(EngineBrowserTest);
+};
+
+IN_PROC_BROWSER_TEST_F(EngineBrowserTest, LoadUrl) {
+  EXPECT_TRUE(embedded_test_server()->Start());
+  GURL url = embedded_test_server()->GetURL("/hello.html");
+
+  EXPECT_CALL(client_rw_feature_delegate_, OnRenderWidgetCreated(1))
+      .WillOnce(
+          InvokeWithoutArgs(this, &EngineBrowserTest::FinishAsynchronousTest));
+
+  client_session_->Connect(std::string());

[Kevin M, 2016/05/02 21:32:40]

Add a new constructor for test connection parameters here, rather than using
flags?

[haibinlu, 2016/05/03 19:32:43]

do you mean command line flags?

getting values from command line is spreading out in different parts of code.
how can one achieve that via test-specific constructors? 

+  client_session_->GetTabControlFeature()->SetSizeAndScale(gfx::Size(100, 100),
+                                                           1);
+  client_session_->GetTabControlFeature()->CreateTab(kDummyTabId);
+  client_session_->GetNavigationFeature()->NavigateToUrlText(kDummyTabId,
+                                                             url.spec());
+
+  RunAsynchronousTest();
+}
+
+}  // namespace
+}  // namespace blimp