Handle missing email error (#54)

Adds appropriate error handling for missing email in the createUserWithEmail:password:completion: flow.

Also fixes a few typos.

2 files changed, 21 insertions, 2 deletions

diff --git a/Example/Auth/Tests/FIRAuthTests.m b/Example/Auth/Tests/FIRAuthTests.m
index 3a6f717..93d6074 100644
--- a/Example/Auth/Tests/FIRAuthTests.m
+++ b/Example/Auth/Tests/FIRAuthTests.m
@@ -1200,6 +1200,25 @@ static const NSTimeInterval kWaitInterval = .5;
   [self waitForExpectationsWithTimeout:kExpectationTimeout handler:nil];
 }
 
+/** @fn testCreateUserEmptyEmailFailure
+    @brief Tests the flow of a failed @c createUserWithEmail:password:completion: call due to an
+        empty email adress. This error occurs on the client side, so there is no need to fake an RPC
+        response.
+ */
+- (void)testCreateUserEmptyEmailFailure {
+  [self expectGetAccountInfo];
+  XCTestExpectation *expectation = [self expectationWithDescription:@"callback"];
+  [[FIRAuth auth] signOut:NULL];
+  [[FIRAuth auth] createUserWithEmail:@""
+                             password:kPassword
+                           completion:^(FIRUser *_Nullable user, NSError *_Nullable error) {
+    XCTAssertTrue([NSThread isMainThread]);
+    XCTAssertEqual(error.code, FIRAuthErrorCodeMissingEmail);
+    [expectation fulfill];
+  }];
+  [self waitForExpectationsWithTimeout:kExpectationTimeout handler:nil];
+}
+
 /** @fn testSendPasswordResetEmailSuccess
     @brief Tests the flow of a successful @c sendPasswordResetWithEmail:completion: call.
  */
diff --git a/Example/Auth/Tests/FIRSignUpNewUserResponseTests.m b/Example/Auth/Tests/FIRSignUpNewUserResponseTests.m
index ca4a5f7..ee0c785 100644
--- a/Example/Auth/Tests/FIRSignUpNewUserResponseTests.m
+++ b/Example/Auth/Tests/FIRSignUpNewUserResponseTests.m
@@ -242,11 +242,11 @@ static const double kAllowedTimeDifference = 0.1;
   XCTAssertEqual(RPCError.code, FIRAuthErrorCodeOperationNotAllowed);
 }
 
-/** @fn testinvalidEmailError
+/** @fn testInvalidEmailError
     @brief This test simulates making a request containing an invalid email address and receiving @c
         FIRAuthErrorInvalidEmail error as a result.
  */
-- (void)testinvalidEmailError {
+- (void)testInvalidEmailError {
   FIRSignUpNewUserRequest *request = [[FIRSignUpNewUserRequest alloc] initWithAPIKey:kTestAPIKey];
 
   __block BOOL callbackInvoked;