Creates alertCoordinatorDelegate for alerts

ios/chrome/browser/ui/alert_coordinator/action_sheet_unittest.mm

Index: ios/chrome/browser/ui/alert_coordinator/action_sheet_unittest.mm
diff --git a/ios/chrome/browser/ui/alert_coordinator/action_sheet_unittest.mm b/ios/chrome/browser/ui/alert_coordinator/action_sheet_unittest.mm
new file mode 100644
index 0000000000000000000000000000000000000000..2cbb15018af3c92f05dce892e354108391f3da9b
--- /dev/null
+++ b/ios/chrome/browser/ui/alert_coordinator/action_sheet_unittest.mm
@@ -0,0 +1,108 @@
+// Copyright 2016 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 "ios/chrome/browser/ui/alert_coordinator/action_sheet.h"
+
+#import <UIKit/UIKit.h>
+
+#import "base/mac/scoped_nsobject.h"
+#import "ios/chrome/browser/ui/alert_coordinator/alert_coordinator.h"
+#import "ios/web/public/web_state/context_menu_params.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+#include "third_party/ocmock/gtest_support.h"
+
+// Tests that ActionSheet ask for a default cancel button.
+TEST(ActionSheetTest, ShouldAddCancelButton) {
+  // Setup.
+  base::scoped_nsobject<ActionSheet> actionSheet([[ActionSheet alloc] init]);
+
+  // Test.
+  EXPECT_TRUE([actionSheet alertCoordinatorShouldAddCancelButton:nil]);
+}
+
+// Tests that the ActionSheet let the Alert start.
+TEST(ActionSheetTest, AlertCoordinatorShouldStart) {
+  // Setup.
+  base::scoped_nsobject<UIWindow> window(
+      [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]);
+  [window makeKeyAndVisible];
+  base::scoped_nsobject<UIViewController> viewController(
+      [[UIViewController alloc] init]);
+  [window setRootViewController:viewController];
+
+  web::ContextMenuParams params;
+  params.location = CGPointMake(0, 0);
+  ;

[lpromero, 2016/07/18 12:11:36]

Remove.

+  params.view.reset([[viewController view] retain]);
+  base::scoped_nsobject<ActionSheet> actionSheet(
+      [[ActionSheet alloc] initWithParams:params]);
+
+  // Test.
+  ASSERT_TRUE([actionSheet alertCoordinatorShouldStart:nil]);

[lpromero, 2016/07/18 12:11:35]

s/ASSERT/EXPECT

ASSERT stops the test execution, while EXPECT prints out a log and continues.
Here, it's the last call in the tests so there might not be much difference.
Yet, I find the difference useful when reading: ASSERT is something that must be
true after setup and before testing, while EXPECT is the testing phase.

[marq (ping after 24h), 2016/07/18 13:02:41]

ASSERT should generally only be used in cases where further execution would
cause a crash.

+}
+
+// Tests that the ActionSheet do not let the Alert start if the window is not
+// visible.
+TEST(ActionSheetTest, AlertCoordinatorShouldNotStart) {
+  // Setup.
+  base::scoped_nsobject<UIWindow> window(
+      [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]);
+  base::scoped_nsobject<UIViewController> viewController(
+      [[UIViewController alloc] init]);
+  [window setRootViewController:viewController];
+
+  web::ContextMenuParams params;
+  params.location = CGPointMake(0, 0);
+  ;

[lpromero, 2016/07/18 12:11:35]

Remove.

+  params.view.reset([[viewController view] retain]);
+  base::scoped_nsobject<ActionSheet> actionSheet(
+      [[ActionSheet alloc] initWithParams:params]);
+
+  // Test.
+  ASSERT_FALSE([actionSheet alertCoordinatorShouldStart:nil]);

[lpromero, 2016/07/18 12:11:36]

s/ASSERT/EXPECT

+}
+
+// Tests that the ActionController created by ActionSheet is used to display
+// context menu.
+TEST(ActionSheetTest, ValidateContextMenuParams) {
+  // Setup.
+  base::scoped_nsobject<UIWindow> window(
+      [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]);
+  base::scoped_nsobject<UIViewController> viewController(
+      [[UIViewController alloc] init]);
+  [window setRootViewController:viewController];
+
+  CGPoint location = CGPointMake(100.0, 125.0);
+  NSString* title = @"Context Menu Title";
+
+  web::ContextMenuParams params;
+  params.location = location;
+  params.menu_title.reset(title);
+  params.view.reset([[viewController view] retain]);
+  base::scoped_nsobject<ActionSheet> actionSheet(
+      [[ActionSheet alloc] initWithParams:params]);
+
+  NSString* message = @"Test message";
+
+  id alertCoordinator = [OCMockObject mockForClass:[AlertCoordinator class]];
+  [[[alertCoordinator stub] andReturn:message] message];
+  [[[alertCoordinator stub] andReturn:viewController] baseViewController];
+
+  // Action.
+  UIAlertController* alertController =
+      [actionSheet alertCoordinatorUIAlertController:alertCoordinator];
+
+  // Test.
+  EXPECT_EQ(title, alertController.title);
+
+  // Only validate the popover location if it is displayed in a popover.
+  if (alertController.popoverPresentationController) {
+    CGPoint presentedLocation =
+        alertController.popoverPresentationController.sourceRect.origin;
+    EXPECT_EQ(location.x, presentedLocation.x);
+    EXPECT_EQ(location.y, presentedLocation.y);
+  }
+}