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diff --git a/Example/Auth/Tests/FIRGetAccountInfoResponseTests.m b/Example/Auth/Tests/FIRGetAccountInfoResponseTests.m
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+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <XCTest/XCTest.h>
+
+#import "FIRAuthErrors.h"
+#import "FIRAuthInternalErrors.h"
+#import "FIRAuthBackend.h"
+#import "FIRGetOOBConfirmationCodeResponse.h"
+#import "FIRGetAccountInfoRequest.h"
+#import "FIRGetAccountInfoResponse.h"
+#import "FIRFakeBackendRPCIssuer.h"
+
+/** @var kTestAPIKey
+    @brief Fake API key used for testing.
+ */
+static NSString *const kTestAPIKey = @"APIKey";
+
+/** @var kUsersKey
+    @brief the name of the "users" property in the response.
+ */
+static NSString *const kUsersKey = @"users";
+
+/** @var kVerifiedProviderKey
+    @brief The name of the "VerifiedProvider" property in the response.
+ */
+static NSString *const kProviderUserInfoKey = @"providerUserInfo";
+
+/** @var kPhotoUrlKey
+    @brief The name of the "photoURL" property in the response.
+ */
+static NSString *const kPhotoUrlKey = @"photoUrl";
+
+/** @var kTestPhotoURL
+    @brief The fake photoUrl property value in the response.
+ */
+static NSString *const kTestPhotoURL = @"testPhotoURL";
+
+/** @var kTestAccessToken
+    @brief testing token.
+ */
+static NSString *const kTestAccessToken = @"testAccessToken";
+
+/** @var kProviderIDkey
+    @brief The name of the "provider ID" property in the response.
+ */
+static NSString *const kProviderIDkey = @"providerId";
+
+/** @var kTestProviderID
+    @brief The fake providerID property value in the response.
+ */
+static NSString *const kTestProviderID = @"testProviderID";
+
+/** @var kDisplayNameKey
+    @brief The name of the "Display Name" property in the response.
+ */
+static NSString *const kDisplayNameKey = @"displayName";
+
+/** @var kTestDisplayName
+    @brief The fake DisplayName property value in the response.
+ */
+static NSString *const kTestDisplayName = @"DisplayName";
+
+/** @var kFederatedIDKey
+    @brief The name of the "federated Id" property in the response.
+ */
+static NSString *const kFederatedIDKey = @"federatedId";
+
+/** @var kTestFederatedID
+    @brief The fake federated Id property value in the response.
+ */
+static NSString *const kTestFederatedID = @"testFederatedId";
+
+/** @var kEmailKey
+    @brief The name of the "Email" property in the response.
+ */
+static NSString *const kEmailKey = @"email";
+
+/** @var kTestEmail
+    @brief The fake email property value in the response.
+ */
+static NSString *const kTestEmail = @"testEmail";
+
+/** @var kPasswordHashKey
+    @brief The name of the "password hash" property in the response.
+ */
+static NSString *const kPasswordHashKey = @"passwordHash";
+
+/** @var kTestPasswordHash
+    @brief The fake password hash property value in the response.
+ */
+static NSString *const kTestPasswordHash = @"testPasswordHash";
+
+/** @var kLocalIDKey
+    @brief The key for the "localID" value in the response.
+ */
+static NSString *const kLocalIDKey = @"localId";
+
+/** @var kTestLocalID
+    @brief The fake @c localID for testing in the response.
+ */
+static NSString *const kTestLocalID = @"testLocalId";
+
+/** @var kEmailVerifiedKey
+    @brief The key for the "emailVerified" value in the response.
+ */
+static NSString *const kEmailVerifiedKey = @"emailVerified";
+
+/** @class FIRGetAccountInfoResponseTests
+    @brief Tests for @c FIRGetAccountInfoResponse.
+ */
+@interface FIRGetAccountInfoResponseTests : XCTestCase
+@end
+@implementation FIRGetAccountInfoResponseTests {
+  /** @var _RPCIssuer
+      @brief This backend RPC issuer is used to fake network responses for each test in the suite.
+          In the @c setUp method we initialize this and set @c FIRAuthBackend's RPC issuer to it.
+   */
+  FIRFakeBackendRPCIssuer *_RPCIssuer;
+}
+
+- (void)setUp {
+  [super setUp];
+  FIRFakeBackendRPCIssuer *RPCIssuer = [[FIRFakeBackendRPCIssuer alloc] init];
+  [FIRAuthBackend setDefaultBackendImplementationWithRPCIssuer:RPCIssuer];
+  _RPCIssuer = RPCIssuer;
+}
+
+- (void)tearDown {
+  _RPCIssuer = nil;
+  [FIRAuthBackend setDefaultBackendImplementationWithRPCIssuer:nil];
+  [super tearDown];
+}
+
+/** @fn testGetAccountInfoUnexpectedResponseError
+    @brief This test simulates an unexpected response returned from server in @c GetAccountInfo
+        flow.
+ */
+- (void)testGetAccountInfoUnexpectedResponseError {
+  FIRGetAccountInfoRequest *request =
+      [[FIRGetAccountInfoRequest alloc] initWithAPIKey:kTestAPIKey accessToken:kTestAccessToken];
+
+  __block BOOL callbackInvoked;
+  __block FIRGetAccountInfoResponse *RPCResponse;
+  __block NSError *RPCError;
+  [FIRAuthBackend getAccountInfo:request
+                        callback:^(FIRGetAccountInfoResponse *_Nullable response,
+                                   NSError *_Nullable error) {
+    callbackInvoked = YES;
+    RPCResponse = response;
+    RPCError = error;
+  }];
+
+  NSArray *erroneousUserData = @[@"user1Data", @"user2Data"];
+  [_RPCIssuer respondWithJSON:@{
+    kUsersKey : erroneousUserData
+  }];
+
+  XCTAssert(callbackInvoked);
+  XCTAssertNotNil(RPCError);
+  XCTAssertEqualObjects(RPCError.domain, FIRAuthErrorDomain);
+  XCTAssertEqual(RPCError.code, FIRAuthErrorCodeInternalError);
+  XCTAssertNotNil(RPCError.userInfo[NSUnderlyingErrorKey]);
+  NSError *underlyingError = RPCError.userInfo[NSUnderlyingErrorKey];
+  XCTAssertNotNil(underlyingError);
+  XCTAssertNotNil(underlyingError.userInfo[FIRAuthErrorUserInfoDeserializedResponseKey]);
+  XCTAssertNil(RPCResponse);
+}
+
+/** @fn testSuccessfulGetAccountInfoResponse
+    @brief This test simulates a successful @c GetAccountInfo flow.
+ */
+- (void)testSuccessfulGetAccountInfoResponse {
+  FIRGetAccountInfoRequest *request =
+      [[FIRGetAccountInfoRequest alloc] initWithAPIKey:kTestAPIKey accessToken:kTestAccessToken];
+
+  __block BOOL callbackInvoked;
+  __block FIRGetAccountInfoResponse *RPCResponse;
+  __block NSError *RPCError;
+  [FIRAuthBackend getAccountInfo:request
+                        callback:^(FIRGetAccountInfoResponse *_Nullable response,
+                                   NSError *_Nullable error) {
+    callbackInvoked = YES;
+    RPCResponse = response;
+    RPCError = error;
+  }];
+
+  NSArray *users = @[
+    @{
+      kProviderUserInfoKey:@[
+        @{
+          kProviderIDkey : kTestProviderID,
+          kDisplayNameKey: kTestDisplayName,
+          kPhotoUrlKey : kTestPhotoURL,
+          kFederatedIDKey : kTestFederatedID,
+          kEmailKey : kTestEmail,
+        }
+      ],
+      kLocalIDKey : kTestLocalID,
+      kDisplayNameKey : kTestDisplayName,
+      kEmailKey : kTestEmail,
+      kPhotoUrlKey : kTestPhotoURL,
+      kEmailVerifiedKey : @YES,
+      kPasswordHashKey : kTestPasswordHash
+    }
+  ];
+  [_RPCIssuer respondWithJSON:@{
+    @"users" : users,
+  }];
+  XCTAssert(callbackInvoked);
+  XCTAssertNil(RPCError);
+  XCTAssertNotNil(RPCResponse);
+  XCTAssertNotNil(RPCResponse.users);
+  if ([RPCResponse.users count]) {
+    NSURL *responsePhotoUrl = RPCResponse.users[0].photoURL;
+    XCTAssertEqualObjects(responsePhotoUrl.absoluteString, kTestPhotoURL);
+    XCTAssertEqualObjects(RPCResponse.users[0].displayName, kTestDisplayName);
+    XCTAssertEqualObjects(RPCResponse.users[0].email, kTestEmail);
+    XCTAssertEqualObjects(RPCResponse.users[0].localID, kTestLocalID);
+    XCTAssertEqual(RPCResponse.users[0].emailVerified, YES);
+    XCTAssertEqualObjects(RPCResponse.users[0].passwordHash, kTestPasswordHash);
+    NSArray<FIRGetAccountInfoResponseProviderUserInfo *> *providerUserInfo =
+        RPCResponse.users[0].providerUserInfo;
+    if ([providerUserInfo count]) {
+      NSURL *providerInfoPhotoUrl = providerUserInfo[0].photoURL;
+      XCTAssertEqualObjects(providerInfoPhotoUrl.absoluteString, kTestPhotoURL);
+      XCTAssertEqualObjects(providerUserInfo[0].providerID, kTestProviderID);
+      XCTAssertEqualObjects(providerUserInfo[0].displayName, kTestDisplayName);
+      XCTAssertEqualObjects(providerUserInfo[0].federatedID, kTestFederatedID);
+      XCTAssertEqualObjects(providerUserInfo[0].email, kTestEmail);
+    }
+  }
+}
+
+@end