add ttd integration tests

Author: krystofwoldrich

packages/core/src/js/integrations/default.ts

@@ -116,7 +116,9 @@ export function getDefaultIntegrations(options: ReactNativeClientOptions): Integ
     integrations.push(appRegistryIntegration());
     integrations.push(reactNativeTracingIntegration());
   }
-  integrations.push(timeToDisplayIntegration());
+  if (hasTracingEnabled) {
+    integrations.push(timeToDisplayIntegration());
+  }
   if (options.enableCaptureFailedRequests) {
     integrations.push(httpClientIntegration());
   }

packages/core/test/sdk.test.ts

@@ -743,6 +743,22 @@ describe('Tests the SDK functionality', () => {
       });
     });
 
+    describe('time to display integration', () => {
+      it('no integration when tracing disabled', () => {
+        init({});
+
+        expectNotIntegration('TimeToDisplay');
+      });
+
+      it('integration added when tracing enabled', () => {
+        init({
+          tracesSampleRate: 0.5,
+        });
+
+        expectIntegration('TimeToDisplay');
+      });
+    });
+
     it('adds spotlight integration with spotlight bool', () => {
       init({
         spotlight: true,