Added ability to override device paramters in Deviceplugin test utils

Summary: This allows for more controlled device plugin tests

Reviewed By: mweststrate

Differential Revision: D37609991

fbshipit-source-id: 7e0694ba97e6b2c34b5d9cd81761eecd2f50c6f9

desktop/flipper-plugin/src/test-utils/test-utils.tsx

@@ -62,6 +62,7 @@ interface StartPluginOptions {
    * Provide a set of GKs that are enabled in this test.
    */
   GKs?: string[];
+  testDevice?: Device;
 }
 
 type ExtractClientType<Module extends FlipperPluginModule<any>> = Parameters<
@@ -587,6 +588,7 @@ function createMockDevice(options?: StartPluginOptions): Device & {
     },
     deviceType: 'emulator',
     serial: 'serial-000',
+    ...options?.testDevice,
     isArchived: !!options?.isArchived,
     connected: createState(true),
     addLogListener(cb) {