Add build tests for Auth globals (#12227)

FirebaseAuth/Tests/Unit/ObjCGlobalTests.m

@@ -0,0 +1,51 @@
+// Copyright 2023 Google LLC
+//
+// 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 FirebaseAuth;
+
+@interface ObjCAPIGlobalTests : XCTestCase
+@end
+
+@implementation ObjCAPIGlobalTests
+
+- (void)GlobalSymbolBuildTest {
+  __unused NSNotificationName n = FIRAuthStateDidChangeNotification;
+  NSString *s = FIRAuthErrorDomain;
+  s = FIRAuthErrorUserInfoNameKey;
+  s = FIRAuthErrorUserInfoEmailKey;
+  s = FIRAuthErrorUserInfoUpdatedCredentialKey;
+  s = FIRAuthErrorUserInfoMultiFactorResolverKey;
+  s = FIREmailAuthProviderID;
+  s = FIREmailLinkAuthSignInMethod;
+  s = FIREmailPasswordAuthSignInMethod;
+  s = FIRFacebookAuthProviderID;
+  s = FIRFacebookAuthSignInMethod;
+  s = FIRGameCenterAuthProviderID;
+  s = FIRGameCenterAuthSignInMethod;
+  s = FIRGitHubAuthProviderID;
+  s = FIRGitHubAuthSignInMethod;
+  s = FIRGoogleAuthProviderID;
+  s = FIRGoogleAuthSignInMethod;
+#if TARGET_OS_IOS
+  s = FIRPhoneMultiFactorID;
+  s = FIRTOTPMultiFactorID;
+  s = FIRPhoneAuthProviderID;
+  s = FIRPhoneAuthSignInMethod;
+#endif
+  s = FIRTwitterAuthProviderID;
+  s = FIRTwitterAuthSignInMethod;
+}
+@end

FirebaseAuth/Tests/Unit/SwiftGlobalTests.swift

@@ -0,0 +1,50 @@
+// Copyright 2023 Google LLC
+//
+// 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 Foundation
+import XCTest
+
+import FirebaseAuth
+
+/// Tests globals defined in Objective C sources.  These globals are for backward compatibility and
+/// should not be used in new code.
+class SwiftGlobalTests: XCTestCase {
+  func GlobalSymbolBuildTest() {
+    let _ = NSNotification.Name.AuthStateDidChange
+    let _: String = AuthErrorDomain
+    let _: String = AuthErrorUserInfoNameKey
+    let _: String = AuthErrorUserInfoEmailKey
+    let _: String = AuthErrorUserInfoUpdatedCredentialKey
+    let _: String = AuthErrorUserInfoMultiFactorResolverKey
+    let _: String = EmailAuthProviderID
+    let _: String = EmailLinkAuthSignInMethod
+    let _: String = EmailPasswordAuthSignInMethod
+    let _: String = FacebookAuthProviderID
+    let _: String = FacebookAuthSignInMethod
+    let _: String = GameCenterAuthProviderID
+    let _: String = GameCenterAuthSignInMethod
+    let _: String = GitHubAuthProviderID
+    let _: String = GitHubAuthSignInMethod
+    let _: String = GoogleAuthProviderID
+    let _: String = GoogleAuthSignInMethod
+    #if os(iOS)
+      let _: String = PhoneMultiFactorID
+      let _: String = TOTPMultiFactorID
+      let _: String = PhoneAuthProviderID
+      let _: String = PhoneAuthSignInMethod
+    #endif
+    let _: String = TwitterAuthProviderID
+    let _: String = TwitterAuthSignInMethod
+  }
+}

Package.swift

@@ -464,6 +464,7 @@ let package = Package(
         "FIRAuthTests.m",
         "FIRUserTests.m",
         "SwiftAPI.swift", // Only builds via CocoaPods testing until Swift source update.
+        "SwiftGlobalTests.swift", // Only builds via CocoaPods testing until Swift source update.
       ],
       cSettings: [
         .headerSearchPath("../../.."),