Delete stale Firestore instances after FIRApp is deleted. (#809)

1 files changed, 62 insertions, 0 deletions

diff --git a/Firestore/Example/Tests/API/FIRFirestoreTests.mm b/Firestore/Example/Tests/API/FIRFirestoreTests.mm
new file mode 100644
index 0000000..4daf35a
--- /dev/null
+++ b/Firestore/Example/Tests/API/FIRFirestoreTests.mm
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2018 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 <FirebaseCore/FIRAppInternal.h>
+#import <FirebaseCore/FIROptionsInternal.h>
+#import <FirebaseFirestore/FIRFirestore.h>
+
+#import <XCTest/XCTest.h>
+
+@interface FIRFirestoreTests : XCTestCase
+@end
+
+@implementation FIRFirestoreTests
+
+- (void)testDeleteApp {
+  // Create a FIRApp for testing.
+  NSString *appName = @"custom_app_name";
+  FIROptions *options =
+      [[FIROptions alloc] initWithGoogleAppID:@"1:123:ios:123ab" GCMSenderID:@"gcm_sender_id"];
+  options.projectID = @"project_id";
+  [FIRApp configureWithName:appName options:options];
+
+  // Ensure the app is set appropriately.
+  FIRApp *app = [FIRApp appNamed:appName];
+  FIRFirestore *firestore = [FIRFirestore firestoreForApp:app];
+  XCTAssertEqualObjects(firestore.app, app);
+
+  // Ensure that firestoreForApp returns the same instance.
+  XCTAssertEqualObjects(firestore, [FIRFirestore firestoreForApp:app]);
+
+  XCTestExpectation *defaultAppDeletedExpectation =
+      [self expectationWithDescription:
+                @"Deleting the default app should invalidate the default "
+                @"Firestore instance."];
+  [app deleteApp:^(BOOL success) {
+    // Recreate the FIRApp with the same name, fetch a new Firestore instance and make sure it's
+    // different than the other one.
+    [FIRApp configureWithName:appName options:options];
+    FIRApp *newApp = [FIRApp appNamed:appName];
+    FIRFirestore *newInstance = [FIRFirestore firestoreForApp:newApp];
+    XCTAssertNotEqualObjects(newInstance, firestore);
+
+    [defaultAppDeletedExpectation fulfill];
+  }];
+
+  [self waitForExpectations:@[ defaultAppDeletedExpectation ] timeout:2];
+}
+
+@end