diff --git a/selfprivacy_api/services/test_service/__init__.py b/selfprivacy_api/services/test_service/__init__.py
index 3baf193..60aea3b 100644
--- a/selfprivacy_api/services/test_service/__init__.py
+++ b/selfprivacy_api/services/test_service/__init__.py
@@ -74,9 +74,9 @@ class DummyService(Service):
     def get_backup_description() -> str:
         return "How did we get here?"
 
-    @staticmethod
-    def is_enabled() -> bool:
-        return True
+    @classmethod
+    def is_enabled(cls) -> bool:
+        return cls.get_enabled()
 
     @classmethod
     def status_file(cls) -> str:
@@ -144,11 +144,11 @@ class DummyService(Service):
 
     @classmethod
     def enable(cls):
-        pass
+        cls.set_enabled(True)
 
     @classmethod
-    def disable(cls, delay):
-        pass
+    def disable(cls):
+        cls.set_enabled(False)
 
     @classmethod
     def set_delay(cls, new_delay):
diff --git a/tests/test_graphql/test_services.py b/tests/test_graphql/test_services.py
index c9b909b..bc9eab0 100644
--- a/tests/test_graphql/test_services.py
+++ b/tests/test_graphql/test_services.py
@@ -37,6 +37,37 @@ mutation TestStartService($service_id: String!) {
 }
 """
 
+API_ENABLE_MUTATION = """
+mutation TestStartService($service_id: String!) {
+    services {
+        enableService(serviceId: $service_id) {
+            success
+            message
+            code
+            service {
+                id
+                isEnabled
+            }
+        }
+    }
+}
+"""
+API_DISABLE_MUTATION = """
+mutation TestStartService($service_id: String!) {
+    services {
+        disableService(serviceId: $service_id) {
+            success
+            message
+            code
+            service {
+                id
+                isEnabled
+            }
+        }
+    }
+}
+"""
+
 API_STOP_MUTATION = """
 mutation TestStopService($service_id: String!) {
     services {
@@ -62,6 +93,36 @@ allServices {
 """
 
 
+def api_enable(client, service: Service) -> dict:
+    return api_enable_by_name(client, service.get_id())
+
+
+def api_enable_by_name(client, service_id: str) -> dict:
+    response = client.post(
+        "/graphql",
+        json={
+            "query": API_ENABLE_MUTATION,
+            "variables": {"service_id": service_id},
+        },
+    )
+    return response
+
+
+def api_disable(client, service: Service) -> dict:
+    return api_disable_by_name(client, service.get_id())
+
+
+def api_disable_by_name(client, service_id: str) -> dict:
+    response = client.post(
+        "/graphql",
+        json={
+            "query": API_DISABLE_MUTATION,
+            "variables": {"service_id": service_id},
+        },
+    )
+    return response
+
+
 def api_start(client, service: Service) -> dict:
     return api_start_by_name(client, service.get_id())
 
@@ -120,6 +181,26 @@ def test_get_services(authorized_client, only_dummy_service):
     assert api_dummy_service["isEnabled"] is True
 
 
+def test_enable_return_value(authorized_client, only_dummy_service):
+    dummy_service = only_dummy_service
+    mutation_response = api_enable(authorized_client, dummy_service)
+    data = get_data(mutation_response)["services"]["enableService"]
+    assert_ok(data)
+    service = data["service"]
+    assert service["id"] == dummy_service.get_id()
+    assert service["isEnabled"] == True
+
+
+def test_disable_return_value(authorized_client, only_dummy_service):
+    dummy_service = only_dummy_service
+    mutation_response = api_disable(authorized_client, dummy_service)
+    data = get_data(mutation_response)["services"]["disableService"]
+    assert_ok(data)
+    service = data["service"]
+    assert service["id"] == dummy_service.get_id()
+    assert service["isEnabled"] == False
+
+
 def test_start_return_value(authorized_client, only_dummy_service):
     dummy_service = only_dummy_service
     mutation_response = api_start(authorized_client, dummy_service)