MacViews: Initial skeleton for implementing NativeWidgetMac

ui/views/cocoa/bridged_native_widget_unittest.mm

+// 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.
+
+#import "ui/views/cocoa/bridged_native_widget.h"
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/memory/scoped_ptr.h"
+#import "testing/gtest_mac.h"
+#import "ui/gfx/test/ui_cocoa_test_helper.h"
+#import "ui/views/cocoa/bridged_content_view.h"
+#include "ui/views/view.h"
+
+namespace views {
+
+class BridgedNativeWidgetTest : public ui::CocoaTest {
+ public:
+  BridgedNativeWidgetTest();
+  virtual ~BridgedNativeWidgetTest();
+
+  // testing::Test:
+  virtual void SetUp() OVERRIDE;
+  virtual void TearDown() OVERRIDE;
+
+ protected:
+  // TODO(tapted): Make this a EventCountView from widget_unittest.cc.
+  scoped_ptr<views::View> view_;
+  scoped_ptr<BridgedNativeWidget> bridge_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BridgedNativeWidgetTest);
+};
+
+BridgedNativeWidgetTest::BridgedNativeWidgetTest() {
+  Init();

[Robert Sesek, 2014/06/12 13:42:27]

Do you manually need to call Init() here?

[tapted, 2014/06/13 00:14:06]

Wow - nope. Removed. (and mind:blown)

Lots of ui::CocoaTest subclasses do this (e.g. [non-ui] ::CocoaTest in
c/b/ui/cocoa/. I think because there's an odd comment on ui::CocoaTest::Init()
"Allows subclasses to do initialization before calling through to the base
class's initialization" but of course that's backwards.

ui::CocoaTest::CocoaTest() is the only base constructor and it calls Init().
Init is not static, so I think the only way to call Init before the base class
constructor does is something awful involving multiple inheritance and passing
`this` in an initializer list so a different base class can call it.

(I'll put up a CL to make ui::CocoaTest::Init() private -- I think that, or make
it static, would be sensible).

+}
+
+BridgedNativeWidgetTest::~BridgedNativeWidgetTest() {
+}
+
+void BridgedNativeWidgetTest::SetUp() {
+  ui::CocoaTest::SetUp();
+
+  view_.reset(new views::View);
+  bridge_.reset(new BridgedNativeWidget);
+  base::scoped_nsobject<NSWindow> window([test_window() retain]);
+  bridge_->Init(window);
+  bridge_->SetRootView(view_.get());
+
+  [test_window() makePretendKeyWindowAndSetFirstResponder:bridge_->ns_view()];
+}
+
+void BridgedNativeWidgetTest::TearDown() {
+  [test_window() clearPretendKeyWindowAndFirstResponder];
+
+  bridge_.reset();
+  view_.reset();
+
+  ui::CocoaTest::TearDown();
+}
+
+// The TEST_VIEW macro expects the view it's testing to have a superview. In
+// these tests, the NSView bridge is a contentView, at the root. These mimic
+// what TEST_VIEW usually does.
+TEST_F(BridgedNativeWidgetTest, BridgedNativeWidgetTest_TestViewAddRemove) {
+  base::scoped_nsobject<BridgedContentView> view([bridge_->ns_view() retain]);
+  EXPECT_NSEQ([test_window() contentView], view);
+  EXPECT_NSEQ(test_window(), [view window]);
+
+  // The superview of a contentView is an NSNextStepFrame.
+  EXPECT_TRUE([view superview]);
+  EXPECT_TRUE([view hostedView]);
+
+  // Destroying the C++ bridge should remove references to any C++ objects in
+  // the ObjectiveC object, and remove it from the hierarchy.
+  bridge_.reset();
+  EXPECT_FALSE([view hostedView]);
+  EXPECT_FALSE([view superview]);
+  EXPECT_FALSE([view window]);
+  EXPECT_FALSE([test_window() contentView]);
+}
+
+TEST_F(BridgedNativeWidgetTest, BridgedNativeWidgetTest_TestViewDisplay) {
+  [bridge_->ns_view() display];
+}
+
+// Test that resizing the window resizes the root view appropriately.
+TEST_F(BridgedNativeWidgetTest, ViewSizeTracksWindow) {
+  const int kTestNewWidth = 400;
+  const int kTestNewHeight = 300;
+
+  // |test_window()| is borderless, so these should align.
+  NSSize window_size = [test_window() frame].size;
+  EXPECT_EQ(view_->width(), static_cast<int>(window_size.width));
+  EXPECT_EQ(view_->height(), static_cast<int>(window_size.height));
+
+  // Make sure a resize actually occurs.
+  EXPECT_NE(kTestNewWidth, view_->width());
+  EXPECT_NE(kTestNewHeight, view_->height());
+
+  [test_window() setFrame:NSMakeRect(0, 0, kTestNewWidth, kTestNewHeight)
+                  display:NO];
+  EXPECT_EQ(kTestNewWidth, view_->width());
+  EXPECT_EQ(kTestNewHeight, view_->height());
+}
+
+}  // namespace views