[Mac] Window titles for Expose.

chrome/browser/cocoa/chrome_browser_window_unittest.mm

Index: chrome/browser/cocoa/chrome_browser_window_unittest.mm
diff --git a/chrome/browser/cocoa/chrome_browser_window_unittest.mm b/chrome/browser/cocoa/chrome_browser_window_unittest.mm
new file mode 100644
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+++ b/chrome/browser/cocoa/chrome_browser_window_unittest.mm
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+// 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.
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/scoped_nsobject.h"
+#include "chrome/app/chrome_dll_resource.h"
+#import "chrome/browser/cocoa/chrome_browser_window.h"
+#import "chrome/browser/cocoa/browser_window_controller.h"
+#import "chrome/browser/cocoa/cocoa_test_helper.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+
+namespace {
+
+NSEvent* KeyEvent(const NSUInteger flags, const NSUInteger keyCode) {
+  return [NSEvent keyEventWithType:NSKeyDown
+                          location:NSZeroPoint
+                     modifierFlags:flags
+                         timestamp:0.0
+                      windowNumber:0
+                           context:nil
+                        characters:@""
+       charactersIgnoringModifiers:@""
+                         isARepeat:NO
+                          keyCode:keyCode];
+}
+
+class ChromeBrowserWindowTest : public PlatformTest {
+ public:
+  ChromeBrowserWindowTest() {
+    // Create a window.
+    const NSUInteger mask = NSTitledWindowMask | NSClosableWindowMask |
+        NSMiniaturizableWindowMask | NSResizableWindowMask;
+    window_.reset([[ChromeBrowserWindow alloc]
+                    initWithContentRect:NSMakeRect(0, 0, 800, 600)
+                              styleMask:mask
+                                backing:NSBackingStoreBuffered
+                                  defer:NO]);
+    if (DebugUtil::BeingDebugged()) {
+      [window_ orderFront:nil];
+    } else {
+      [window_ orderBack:nil];
+    }
+  }
+
+  // Returns a canonical snapshot of the window.
+  NSData* WindowContentsAsTIFF() {
+    NSRect frame([window_ frame]);
+    frame.origin = [window_ convertScreenToBase:frame.origin];
+
+    NSData* pdfData = [window_ dataWithPDFInsideRect:frame];
+
+    // |pdfData| can differ for windows which look the same, so make it
+    // canonical.
+    NSImage* image = [[[NSImage alloc] initWithData:pdfData] autorelease];
+    return [image TIFFRepresentation];
+  }
+
+  CocoaNoWindowTestHelper cocoa_helper_;
+  scoped_nsobject<ChromeBrowserWindow> window_;
+};
+
+// Baseline test that the window creates, displays, closes, and
+// releases.
+TEST_F(ChromeBrowserWindowTest, ShowAndClose) {
+  [window_ display];
+}
+
+// Verify that the window intercepts a particular key event and
+// forwards it to [delegate executeCommand:].  Assume that other
+// CommandForKeyboardShortcut() will work the same for the rest.
+TEST_F(ChromeBrowserWindowTest, PerformKeyEquivalentForwardToExecuteCommand) {
+  NSEvent *event = KeyEvent(NSCommandKeyMask, kVK_ANSI_1);
+
+  id delegate = [OCMockObject mockForClass:[BrowserWindowController class]];
+  // -stub to satisfy the DCHECK.
+  BOOL yes = YES;
+  [[[delegate stub] andReturnValue:OCMOCK_VALUE(yes)]
+    isKindOfClass:[BrowserWindowController class]];
+  [[delegate expect] executeCommand:IDC_SELECT_TAB_0];
+
+  [window_ setDelegate:delegate];
+  [window_ performKeyEquivalent:event];
+
+  // Don't wish to mock all the way down...
+  [window_ setDelegate:nil];
+  [delegate verify];
+}
+
+// Verify that an unhandled shortcut does not get forwarded via
+// -executeCommand:.
+// TODO(shess) Think of a way to test that it is sent to the
+// superclass.
+TEST_F(ChromeBrowserWindowTest, PerformKeyEquivalentNoForward) {
+  NSEvent *event = KeyEvent(0, 0);
+
+  id delegate = [OCMockObject mockForClass:[BrowserWindowController class]];
+  // -stub to satisfy the DCHECK.
+  BOOL yes = YES;
+  [[[delegate stub] andReturnValue:OCMOCK_VALUE(yes)]
+    isKindOfClass:[BrowserWindowController class]];
+
+  [window_ setDelegate:delegate];
+  [window_ performKeyEquivalent:event];
+
+  // Don't wish to mock all the way down...
+  [window_ setDelegate:nil];
+  [delegate verify];
+}
+
+// Test that undocumented title-hiding API we're using does the job.
+TEST_F(ChromeBrowserWindowTest, DoesHideTitle) {
+  // The -display calls are not strictly necessary, but they do
+  // make it easier to see what's happening when debugging (without
+  // them the changes are never flushed to the screen).
+
+  [window_ setTitle:@""];
+  [window_ display];
+  NSData* emptyTitleData = WindowContentsAsTIFF();
+
+  [window_ setTitle:@"This is a title"];
+  [window_ display];
+  NSData* thisTitleData = WindowContentsAsTIFF();
+
+  // The default window with a title should look different from the
+  // window with an emtpy title.
+  EXPECT_FALSE([emptyTitleData isEqualToData:thisTitleData]);
+
+  [window_ setShouldHideTitle:YES];
+  [window_ setTitle:@""];
+  [window_ display];
+  [window_ setTitle:@"This is a title"];
+  [window_ display];
+  NSData* hiddenTitleData = WindowContentsAsTIFF();
+
+  // With our magic setting, the window with a title should look the
+  // same as the window with an empty title.
+  EXPECT_TRUE([window_ _isTitleHidden]);
+  EXPECT_TRUE([emptyTitleData isEqualToData:hiddenTitleData]);
+}
+
+}  // namespace