Add InfoBarPickerController for displaying a picker view from an infobar

ios/chrome/browser/infobars/infobar_picker_view_controller_unittest.mm

+// 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/infobars/infobar_picker_view_controller.h"
+
+#include "base/mac/foundation_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#import "testing/gtest_mac.h"
+#include "third_party/ocmock/OCMock/OCMock.h"
+#include "third_party/ocmock/gtest_support.h"
+
+@interface TargetObject : NSObject
+@property BOOL donePressed;
+@property BOOL cancelPressed;
+
+- (void)doneButtonPressed:(id)sender;
+- (void)cancelButtonPressed:(id)sender;
+@end
+
+@implementation TargetObject
+@synthesize donePressed = _donePressed;
+@synthesize cancelPressed = _cancelPressed;
+
+- (void)doneButtonPressed:(id)sender {
+  self.donePressed = YES;
+}
+
+- (void)cancelButtonPressed:(id)sender {
+  self.cancelPressed = YES;
+}
+@end
+
+// Test that invoking the right bar button action invokes the assigned "Done"
+// action.
+TEST(InfoBarPickerViewControllerTest, Done) {
+  InfoBarPickerViewController* infobar_picker_controller =
+      [[[InfoBarPickerViewController alloc] initWithNibName:nil bundle:nil]
+          autorelease];
+  TargetObject* target = [[[TargetObject alloc] init] autorelease];
+  [infobar_picker_controller setDoneTarget:target
+                                    action:@selector(doneButtonPressed:)];
+  [infobar_picker_controller loadView];
+
+  UIBarButtonItem* rightButton =
+      infobar_picker_controller.navigationBar.topItem.rightBarButtonItem;
+  [rightButton.target performSelector:rightButton.action];
+  EXPECT_TRUE(target.donePressed);
+}
+
+// Test that invoking the left bar button action invokes the assigned "Cancel"
+// action.
+TEST(InfoBarPickerViewControllerTest, Cancel) {
+  InfoBarPickerViewController* infobar_picker_controller =
+      [[[InfoBarPickerViewController alloc] initWithNibName:nil bundle:nil]
+          autorelease];
+  TargetObject* target = [[[TargetObject alloc] init] autorelease];
+  [infobar_picker_controller setCancelTarget:target
+                                      action:@selector(cancelButtonPressed:)];
+  [infobar_picker_controller loadView];
+
+  UIBarButtonItem* leftButton =
+      infobar_picker_controller.navigationBar.topItem.leftBarButtonItem;
+  [leftButton.target performSelector:leftButton.action];
+  EXPECT_TRUE(target.cancelPressed);
+}
+
+// Test that the picker view is appropriately set up based on delegate provided
+// values.
+TEST(InfoBarPickerViewControllerTest, Delegate) {
+  InfoBarPickerViewController* infobar_picker_controller =
+      [[[InfoBarPickerViewController alloc] initWithNibName:nil bundle:nil]
+          autorelease];
+  NSString* account1 = @"account1";
+  NSString* account2 = @"account2";
+  NSString* account3 = @"account3";
+
+  id delegate = [OCMockObject
+      mockForProtocol:@protocol(InfoBarPickerViewControllerDelegate)];
+  [[[delegate stub] andReturn:account1]
+      infoBarPickerViewController:infobar_picker_controller
+                       textForRow:0];
+  [[[delegate stub] andReturn:account2]
+      infoBarPickerViewController:infobar_picker_controller
+                       textForRow:1];
+  [[[delegate stub] andReturn:account3]
+      infoBarPickerViewController:infobar_picker_controller
+                       textForRow:2];
+  [[[delegate stub] andReturnValue:@3]
+      infoBarPickerViewControllerNumberOfRows:infobar_picker_controller];
+  [[[delegate stub] andReturnValue:@1]
+      infoBarPickerViewControllerInitialRow:infobar_picker_controller];
+  [[[delegate stub] andReturnValue:@2]
+      infoBarPickerViewControllerDisabledRow:infobar_picker_controller];
+  infobar_picker_controller.delegate = delegate;
+  [infobar_picker_controller loadView];
+
+  EXPECT_EQ(1, [infobar_picker_controller.pickerView selectedRowInComponent:0]);
+
+  UILabel* row1 = base::mac::ObjCCastStrict<UILabel>(
+      [infobar_picker_controller.pickerView viewForRow:0 forComponent:0]);
+  EXPECT_NSEQ(account1, row1.text);
+  EXPECT_TRUE(row1.enabled);
+
+  UILabel* row2 = base::mac::ObjCCastStrict<UILabel>(
+      [infobar_picker_controller.pickerView viewForRow:1 forComponent:0]);
+  EXPECT_NSEQ(account2, row2.text);
+  EXPECT_TRUE(row2.enabled);
+  EXPECT_TRUE(row2.font.fontDescriptor.symbolicTraits |
+              UIFontDescriptorTraitBold);
+
+  UILabel* row3 = base::mac::ObjCCastStrict<UILabel>(
+      [infobar_picker_controller.pickerView viewForRow:2 forComponent:0]);
+  EXPECT_NSEQ(account3, row3.text);
+  EXPECT_FALSE(row3.enabled);
+}