Upstream Chrome on iOS source code [6/11].

ios/chrome/browser/ui/open_in_toolbar_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.
+
+#include "base/logging.h"
+#include "base/mac/scoped_nsobject.h"
+#import "ios/chrome/browser/ui/open_in_toolbar.h"
+#include "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+
+// A class that counts the number of times the |dummyMethod:| method is called.
+@interface DummyObserver : NSObject
+
+// The number of times |dummyMethod:| is invoked.
+@property(nonatomic, readonly) int dummyMethodCallCount;
+
+// The method whose invocation increases |dummyMethodCallCount| by one.
+- (void)dummyMethod:(id)parameter;
+
+@end
+
+@implementation DummyObserver
+
+@synthesize dummyMethodCallCount = _dummyMethodCallCount;
+
+- (void)dummyMethod:(id)parameter {
+  _dummyMethodCallCount++;
+}
+
+@end
+
+namespace {
+
+class OpenInToolbarTest : public PlatformTest {
+ protected:
+  UIButton* GetOpenInButtonInToolBar(OpenInToolbar* toolbar) {
+    NSArray* subviews = [toolbar subviews];
+    // Assumes there is only one UIButton in the toolbar.
+    for (UIView* subview in subviews) {
+      if ([subview isKindOfClass:[UIButton class]]) {
+        return (UIButton*)subview;
+      }
+    }
+    return nil;
+  }
+};
+
+TEST_F(OpenInToolbarTest, TestButtonActionAndSelector) {
+  base::scoped_nsobject<DummyObserver> dummyObserver(
+      [[DummyObserver alloc] init]);
+  base::scoped_nsobject<OpenInToolbar> openInToolbar([[OpenInToolbar alloc]
+      initWithTarget:dummyObserver
+              action:@selector(dummyMethod:)]);
+  UIButton* button = GetOpenInButtonInToolBar(openInToolbar);
+  ASSERT_TRUE(button);
+  EXPECT_EQ([dummyObserver dummyMethodCallCount], 0);
+  [button sendActionsForControlEvents:UIControlEventTouchUpInside];
+  EXPECT_EQ([dummyObserver dummyMethodCallCount], 1);
+}
+
+}  // namespace