Add unit tests for DevToolsManager

chrome/browser/debugger/devtools_manager_unittest.cc

+// Copyright (c) 2009 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/basictypes.h"
+#include "chrome/browser/debugger/devtools_manager.h"
+#include "chrome/browser/debugger/devtools_window.h"
+#include "chrome/browser/renderer_host/test_render_view_host.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "chrome/common/render_messages.h"
+
+namespace {
+
+class TestDevToolsWindow : public DevToolsWindow {
+ public:
+  TestDevToolsWindow(DevToolsInstanceDescriptor* descriptor)
+      : descriptor_(descriptor),
+        shown_(false),
+        closed_(false) {
+    descriptor->SetDevToolsWindow(this);
+  }
+
+  virtual ~TestDevToolsWindow() {
+    EXPECT_EQ(shown_, closed_);
+  }
+
+  virtual void Show() {
+    open_counter++;
+    shown_ = true;
+  }
+
+  virtual void Close() {
+    EXPECT_TRUE(shown_);
+    close_counter++;
+    descriptor_->Destroy();
+    closed_ = true;
+  }
+
+  static void ResetCounters() {
+    open_counter = 0;
+    close_counter = 0;
+  }
+
+  static int open_counter;
+  static int close_counter;
+
+ private:
+  DevToolsInstanceDescriptor* descriptor_;
+  bool shown_;
+  bool closed_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestDevToolsWindow);
+};
+
+int TestDevToolsWindow::open_counter = 0;
+int TestDevToolsWindow::close_counter = 0;
+
+
+class TestDevToolsWindowFactory : public DevToolsWindowFactory {
+ public:
+  TestDevToolsWindowFactory() : DevToolsWindowFactory(),
+                                last_created_window(NULL) {}
+  virtual ~TestDevToolsWindowFactory() {}
+
+  virtual DevToolsWindow* CreateDevToolsWindow(
+      DevToolsInstanceDescriptor* descriptor) {
+    last_created_window = new TestDevToolsWindow(descriptor);
+    return last_created_window;
+  }
+
+  DevToolsWindow* last_created_window;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestDevToolsWindowFactory);
+};
+
+}  // namespace
+
+class DevToolsManagerTest : public RenderViewHostTestHarness {
+ public:
+  DevToolsManagerTest() : RenderViewHostTestHarness() {
+  }
+
+ protected:
+  virtual void SetUp() {
+    RenderViewHostTestHarness::SetUp();
+    TestDevToolsWindow::ResetCounters();
+  }
+};
+
+TEST_F(DevToolsManagerTest, OpenAndManuallyCloseDevToolsWindow) {
+  TestDevToolsWindowFactory window_factory;
+  DevToolsManager manager(&window_factory);
+
+  manager.ShowDevToolsForWebContents(contents());
+  EXPECT_EQ(TestDevToolsWindow::open_counter, 1);
+  EXPECT_EQ(TestDevToolsWindow::close_counter, 0);
+
+  DevToolsWindow* window = window_factory.last_created_window;
+  // Test that same devtools window is used.
+  manager.ShowDevToolsForWebContents(contents());
+  // Check that no new windows were created.
+  EXPECT_TRUE(window == window_factory.last_created_window);
+  EXPECT_EQ(TestDevToolsWindow::open_counter, 2);
+  EXPECT_EQ(TestDevToolsWindow::close_counter, 0);
+
+  window->Close();
+  EXPECT_EQ(TestDevToolsWindow::open_counter, 2);
+  EXPECT_EQ(TestDevToolsWindow::close_counter, 1);
+}