Re-implement form validation message UI with native widgets. (Common and Mac)

chrome/browser/ui/cocoa/validation_message_bubble_controller_unittest.mm

+// Copyright (c) 2013 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/memory/scoped_nsobject.h"
+#include "base/utf_string_conversions.h"
+#import "chrome/browser/ui/cocoa/validation_message_bubble_controller.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+static NSView* constructView(const char* main_text, const char* sub_text) {
+  return [ValidationMessageBubbleController
+      constructContentView:UTF8ToUTF16(main_text)
+                   subText:UTF8ToUTF16(sub_text)];
+}
+
+TEST(ValidationMessageBubbleControllerTest, FrameSize) {
+  NSRect shortMainNoSubFrame = [constructView("abc", "") frame];
+  EXPECT_GE(NSWidth(shortMainNoSubFrame), 40);
+  EXPECT_GT(NSHeight(shortMainNoSubFrame), 0);
+
+  NSRect longMainNoSubFrame = [constructView(
+      "very very very long text which overlfows the maximum window width. "
+      "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod"
+      " tempor incididunt ut labore et dolore magna aliqua.", "") frame];
+  EXPECT_LT(NSWidth(longMainNoSubFrame), 500);
+  EXPECT_LT(NSHeight(shortMainNoSubFrame), NSHeight(longMainNoSubFrame));
+
+  NSRect shortMainMediumSubFrame = [constructView("abc", "foo bar baz") frame];
+  EXPECT_GT(NSWidth(shortMainMediumSubFrame), NSWidth(shortMainNoSubFrame));
+  EXPECT_GT(NSHeight(shortMainMediumSubFrame), NSHeight(shortMainNoSubFrame));
+
+  NSRect shortMainLongSubFrame =  [constructView("abc",
+      "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod"
+      " tempor incididunt ut labore et dolore magna aliqua.") frame];
+  EXPECT_GT(NSWidth(shortMainLongSubFrame), NSWidth(shortMainMediumSubFrame));
+  EXPECT_LT(NSWidth(shortMainLongSubFrame), 500);
+  EXPECT_GT(NSHeight(shortMainLongSubFrame), NSHeight(shortMainMediumSubFrame));
+}
+
+}
+