api: Add remove{Apns,Fcm}Token

It's no longer true that these endpoints are undocumented, so, link
to them.

Author: chrisbobbe

lib/api/route/notifications.dart

@@ -1,4 +1,3 @@
-
 import '../core.dart';
 
 /// https://zulip.com/api/add-fcm-token
@@ -10,6 +9,15 @@ Future<void> addFcmToken(ApiConnection connection, {
   });
 }
 
+/// https://zulip.com/api/remove-fcm-token
+Future<void> removeFcmToken(ApiConnection connection, {
+  required String token,
+}) {
+  return connection.delete('removeFcmToken', (_) {}, 'users/me/android_gcm_reg_id', {
+    'token': RawParameter(token),
+  });
+}
+
 /// https://zulip.com/api/add-apns-token
 Future<void> addApnsToken(ApiConnection connection, {
   required String token,
@@ -20,3 +28,12 @@ Future<void> addApnsToken(ApiConnection connection, {
     'appid': RawParameter(appid),
   });
 }
+
+/// https://zulip.com/api/remove-apns-token
+Future<void> removeApnsToken(ApiConnection connection, {
+  required String token,
+}) {
+  return connection.delete('removeApnsToken', (_) {}, 'users/me/apns_device_token', {
+    'token': RawParameter(token),
+  });
+}

test/api/route/notifications_test.dart

@@ -28,6 +28,27 @@ void main() {
     });
   });
 
+  group('removeFcmToken', () {
+    Future<void> checkRemoveFcmToken(FakeApiConnection connection, {
+      required String token,
+    }) async {
+      connection.prepare(json: {});
+      await removeFcmToken(connection, token: token);
+      check(connection.lastRequest).isA<http.Request>()
+        ..method.equals('DELETE')
+        ..url.path.equals('/api/v1/users/me/android_gcm_reg_id')
+        ..bodyFields.deepEquals({
+          'token': token,
+        });
+    }
+
+    test('smoke', () {
+      return FakeApiConnection.with_((connection) async {
+        await checkRemoveFcmToken(connection, token: 'asdf');
+      });
+    });
+  });
+
   group('addApnsToken', () {
     Future<void> checkAddApnsToken(FakeApiConnection connection, {
       required String token,
@@ -50,4 +71,25 @@ void main() {
       });
     });
   });
+
+  group('removeApnsToken', () {
+    Future<void> checkRemoveApnsToken(FakeApiConnection connection, {
+      required String token,
+    }) async {
+      connection.prepare(json: {});
+      await removeApnsToken(connection, token: token);
+      check(connection.lastRequest).isA<http.Request>()
+        ..method.equals('DELETE')
+        ..url.path.equals('/api/v1/users/me/apns_device_token')
+        ..bodyFields.deepEquals({
+          'token': token,
+        });
+    }
+
+    test('smoke', () {
+      return FakeApiConnection.with_((connection) async {
+        await checkRemoveApnsToken(connection, token: 'asdf');
+      });
+    });
+  });
 }