Adding mediator for Sign-in promo

ios/chrome/browser/ui/authentication/signin_promo_view_mediator_unittest.mm

+// Copyright 2017 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/authentication/signin_promo_view_mediator.h"
+
+#import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
+#import "testing/platform_test.h"
+#import "third_party/ocmock/OCMock/OCMock.h"
+#include "third_party/ocmock/gtest_support.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+
+class SigninPromoViewMediatorTest : public PlatformTest {
+ protected:
+  void SetUp() override {
+    mediator_ = [[SigninPromoViewMediator alloc] init];
+
+    signin_promo_view_ = OCMStrictClassMock([SigninPromoView class]);
+    primary_button_ = OCMStrictClassMock([MDCFlatButton class]);
+    OCMStub([signin_promo_view_ primaryButton]).andReturn(primary_button_);
+    secondary_button_ = OCMStrictClassMock([MDCFlatButton class]);
+    OCMStub([signin_promo_view_ secondaryButton]).andReturn(secondary_button_);
+  }
+
+  void TearDown() override {
+    mediator_ = nil;
+    EXPECT_OCMOCK_VERIFY((id)signin_promo_view_);
+    EXPECT_OCMOCK_VERIFY((id)primary_button_);
+    EXPECT_OCMOCK_VERIFY((id)secondary_button_);
+  }
+
+  void ExpectColdStateConfiguration() {
+    OCMExpect([signin_promo_view_ setMode:SigninPromoViewColdStateMode]);
+    image_view_profile_image_ = nil;
+    primary_button_title_ = nil;
+    OCMExpect([primary_button_ setTitle:[OCMArg checkWithBlock:^BOOL(id value) {
+                                 primary_button_title_ = value;
+                                 return YES;
+                               }]
+                               forState:UIControlStateNormal]);
+    secondary_button_title_ = nil;
+  }
+
+  void CheckColdStateConfiguration() {
+    EXPECT_EQ(nil, image_view_profile_image_);
+    EXPECT_NE(nil, primary_button_title_);
+    EXPECT_EQ(nil, secondary_button_title_);
+  }
+
+  void ExpectWarmStateConfiguration() {
+    OCMExpect([signin_promo_view_ setMode:SigninPromoViewWarmStateMode]);
+    OCMExpect([signin_promo_view_
+        setProfileImage:[OCMArg checkWithBlock:^BOOL(id value) {
+          image_view_profile_image_ = value;
+          return YES;
+        }]]);
+    primary_button_title_ = nil;
+    OCMExpect([primary_button_ setTitle:[OCMArg checkWithBlock:^BOOL(id value) {
+                                 primary_button_title_ = value;
+                                 return YES;
+                               }]
+                               forState:UIControlStateNormal]);
+    secondary_button_title_ = nil;
+    OCMExpect([secondary_button_
+        setTitle:[OCMArg checkWithBlock:^BOOL(id value) {
+          secondary_button_title_ = value;
+          return YES;
+        }]
+        forState:UIControlStateNormal]);
+  }
+
+  void CheckWarmStateConfiguration() {
+    EXPECT_NE(nil, image_view_profile_image_);
+    NSRange profileNameRange =
+        [primary_button_title_ rangeOfString:mediator_.userFullName];
+    EXPECT_NE(profileNameRange.length, 0u);
+    NSRange profileEmailRange =
+        [secondary_button_title_ rangeOfString:mediator_.userEmail];
+    EXPECT_NE(profileEmailRange.length, 0u);
+  }
+
+  // Mediator used for the tests.
+  SigninPromoViewMediator* mediator_;
+
+  // Mocks.
+  SigninPromoView* signin_promo_view_;
+  MDCFlatButton* primary_button_;
+  MDCFlatButton* secondary_button_;
+
+  // Value set by -[SigninPromoView setProfileImage:].
+  UIImage* image_view_profile_image_;
+  // Value set by -[primary_button_ setTitle: forState:UIControlStateNormal].
+  NSString* primary_button_title_;
+  // Value set by -[secondary_button_ setTitle: forState:UIControlStateNormal].
+  NSString* secondary_button_title_;
+};
+
+TEST_F(SigninPromoViewMediatorTest, ColdStateConfigureSigninPromoView) {
+  EXPECT_EQ(nil, mediator_.userFullName);
+  EXPECT_EQ(nil, mediator_.userEmail);
+  EXPECT_EQ(nil, mediator_.userImage);
+
+  ExpectColdStateConfiguration();
+  [mediator_ configureSigninPromoView:signin_promo_view_];
+  CheckColdStateConfiguration();
+}
+
+TEST_F(SigninPromoViewMediatorTest,
+       WarmStateConfigureSigninPromoViewWithoutImage) {
+  mediator_.userFullName = @"John Doe";
+  mediator_.userEmail = @"johndoe@example.com";
+
+  ExpectWarmStateConfiguration();
+  [mediator_ configureSigninPromoView:signin_promo_view_];
+  CheckWarmStateConfiguration();
+}
+
+TEST_F(SigninPromoViewMediatorTest,
+       WarmStateConfigureSigninPromoViewWithImage) {
+  mediator_.userFullName = @"John Doe";
+  mediator_.userEmail = @"johndoe@example.com";
+  mediator_.userImage = [[UIImage alloc] init];
+
+  ExpectWarmStateConfiguration();
+  [mediator_ configureSigninPromoView:signin_promo_view_];
+  CheckWarmStateConfiguration();
+  EXPECT_EQ(mediator_.userImage, image_view_profile_image_);
+}
+
+// Cold state configuration and then warm state configuration.
+TEST_F(SigninPromoViewMediatorTest, TwoConfigureSigninPromoView) {
+  ExpectColdStateConfiguration();
+  [mediator_ configureSigninPromoView:signin_promo_view_];
+  CheckColdStateConfiguration();
+
+  mediator_.userFullName = @"John Doe";
+  mediator_.userEmail = @"johndoe@example.com";
+
+  ExpectWarmStateConfiguration();
+  [mediator_ configureSigninPromoView:signin_promo_view_];
+  CheckWarmStateConfiguration();
+}
+
+}  // namespace