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diff --git a/Example/Auth/Tests/FIRDeleteAccountResponseTests.m b/Example/Auth/Tests/FIRDeleteAccountResponseTests.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 "FIRAuthBackend.h"
+#import "FIRDeleteAccountRequest.h"
+#import "FIRDeleteAccountResponse.h"
+#import "FIRFakeBackendRPCIssuer.h"
+
+/** @var kTestAPIKey
+    @brief Fake API key used for testing.
+ */
+static NSString *const kTestAPIKey = @"APIKey";
+
+/** @var kLocalID
+    @brief Fake LocalID used for testing.
+ */
+static NSString *const kLocalID = @"LocalID";
+
+/** @var kAccessToken
+    @brief Fake AccessToken used for testing.
+ */
+static NSString *const kAccessToken = @"AccessToken";
+
+/** @var kUserDisabledErrorMessage
+    @brief The error returned by the server if the user account is diabled.
+ */
+static NSString *const kUserDisabledErrorMessage = @"USER_DISABLED";
+
+/** @var kinvalidUserTokenErrorMessage
+    @brief This is the error message the server responds with if user's saved auth credential is
+        invalid, and the user needs to sign in again.
+ */
+static NSString *const kinvalidUserTokenErrorMessage = @"INVALID_ID_TOKEN:";
+
+/** @var kCredentialTooOldErrorMessage
+    @brief This is the error message the server responds with if account change is attempted 5
+        minutes after signing in.
+ */
+static NSString *const kCredentialTooOldErrorMessage = @"CREDENTIAL_TOO_OLD_LOGIN_AGAIN:";
+
+/** @class FIRDeleteUserResponseTests
+    @brief Tests for @c FIRDeleteAccountResponse.
+ */
+@interface FIRDeleteAccountResponseTests : XCTestCase
+@end
+@implementation FIRDeleteAccountResponseTests {
+  /** @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 testUserDisabledError
+    @brief This test simulates the occurrence of a @c userDisabled error.
+ */
+- (void)testUserDisabledError {
+  FIRDeleteAccountRequest *request = [[FIRDeleteAccountRequest alloc] initWithAPIKey:kTestAPIKey
+                                                                             localID:kLocalID
+                                                                         accessToken:kAccessToken];
+
+  __block BOOL callbackInvoked;
+  __block NSError *RPCError;
+  [FIRAuthBackend deleteAccount:request
+                       callback:^(NSError *_Nullable error) {
+    callbackInvoked = YES;
+    RPCError = error;
+  }];
+
+  [_RPCIssuer respondWithServerErrorMessage:kUserDisabledErrorMessage];
+
+  XCTAssert(callbackInvoked);
+  XCTAssertNotNil(RPCError);
+  XCTAssertEqual(RPCError.code, FIRAuthErrorCodeUserDisabled);
+}
+
+/** @fn testinvalidUserTokenError
+    @brief This test simulates the occurrence of a @c invalidUserToken error.
+ */
+- (void)testinvalidUserTokenError {
+  FIRDeleteAccountRequest *request = [[FIRDeleteAccountRequest alloc] initWithAPIKey:kTestAPIKey
+                                                                             localID:kLocalID
+                                                                         accessToken:kAccessToken];
+
+  __block BOOL callbackInvoked;
+  __block NSError *RPCError;
+  [FIRAuthBackend deleteAccount:request
+                       callback:^(NSError *_Nullable error) {
+    callbackInvoked = YES;
+    RPCError = error;
+  }];
+
+  [_RPCIssuer respondWithServerErrorMessage:kinvalidUserTokenErrorMessage];
+
+  XCTAssert(callbackInvoked);
+  XCTAssertNotNil(RPCError);
+  XCTAssertEqual(RPCError.code, FIRAuthErrorCodeInvalidUserToken);
+}
+
+/** @fn testrequiredRecentLoginError
+    @brief This test simulates the occurrence of a @c credentialTooOld error.
+ */
+- (void)testrequiredRecentLoginError {
+  FIRDeleteAccountRequest *request = [[FIRDeleteAccountRequest alloc] initWithAPIKey:kTestAPIKey
+                                                                             localID:kLocalID
+                                                                         accessToken:kAccessToken];
+  __block BOOL callbackInvoked;
+  __block NSError *RPCError;
+  [FIRAuthBackend deleteAccount:request
+                       callback:^(NSError *_Nullable error) {
+    callbackInvoked = YES;
+    RPCError = error;
+  }];
+
+  [_RPCIssuer respondWithServerErrorMessage:kCredentialTooOldErrorMessage];
+
+  XCTAssert(callbackInvoked);
+  XCTAssertNotNil(RPCError);
+  XCTAssertEqual(RPCError.code, FIRAuthErrorCodeRequiresRecentLogin);
+}
+
+/** @fn testSuccessfulDeleteAccount
+    @brief This test simulates a completed succesful deleteAccount operation.
+ */
+- (void)testSuccessfulDeleteAccountResponse {
+  FIRDeleteAccountRequest *request = [[FIRDeleteAccountRequest alloc] initWithAPIKey:kTestAPIKey
+                                                                             localID:kLocalID
+                                                                         accessToken:kAccessToken];
+  __block BOOL callbackInvoked;
+  __block NSError *RPCError;
+  [FIRAuthBackend deleteAccount:request
+                       callback:^(NSError *_Nullable error) {
+    callbackInvoked = YES;
+    RPCError = error;
+  }];
+
+  [_RPCIssuer respondWithJSON:@{}];
+
+  XCTAssert(callbackInvoked);
+  XCTAssertNil(RPCError);
+}
+
+@end