[Mac] Integrate divider into browser-action overflow chevron.

chrome/browser/cocoa/extensions/chevron_menu_button_unittest.mm

+// Copyright (c) 2010 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 "chrome/browser/cocoa/extensions/chevron_menu_button.h"
+#import "chrome/browser/cocoa/extensions/chevron_menu_button_cell.h"
+
+#include "base/scoped_nsobject.h"
+#import "chrome/browser/cocoa/cocoa_test_helper.h"
+
+namespace {
+
+class ChevronMenuButtonTest : public CocoaTest {
+ public:
+  ChevronMenuButtonTest() {
+    NSRect frame = NSMakeRect(0, 0, 50, 30);
+    scoped_nsobject<ChevronMenuButton> button(
+        [[ChevronMenuButton alloc] initWithFrame:frame]);
+    button_ = button.get();
+    [[test_window() contentView] addSubview:button_];
+  }
+
+  ChevronMenuButton* button_;
+};
+
+// Test basic view operation.
+TEST_VIEW(ChevronMenuButtonTest, button_);
+
+// |ChevronMenuButton exists entirely to override the cell class.
+TEST_F(ChevronMenuButtonTest, CellSubclass) {
+  EXPECT_TRUE([[button_ cell] isKindOfClass:[ChevronMenuButtonCell class]]);
+}
+
+// Test both hovered and non-hovered display.
+TEST_F(ChevronMenuButtonTest, HoverAndNonHoverDisplay) {
+  ChevronMenuButtonCell* cell = [button_ cell];
+  EXPECT_FALSE([cell showsBorderOnlyWhileMouseInside]);
+  EXPECT_FALSE([cell isMouseInside]);
+
+  [cell setShowsBorderOnlyWhileMouseInside:YES];
+  [cell mouseEntered:nil];
+  EXPECT_TRUE([cell isMouseInside]);
+  [button_ display];
+
+  [cell mouseExited:nil];
+  EXPECT_FALSE([cell isMouseInside]);
+  [button_ display];
+}
+
+}  // namespace