added comment explaining why we want to skip app delegate for unit testing

hellohuanlin · hellohuanlin · commit 7cec964e25f1 · 2022-02-07T17:33:35.000-08:00
diff --git a/packages/camera/camera/example/ios/Runner/main.m b/packages/camera/camera/example/ios/Runner/main.m
@@ -8,6 +8,10 @@
 
 int main(int argc, char *argv[]) {
   @autoreleasepool {
+    // The setup logic in `AppDelegate::didFinishLaunchingWithOptions:` eventually sends camera
+    // operations on the background queue, which would run concurrently with the tests cases during
+    // unit tests, making the debugging process confusing. This setup is actually not necessary for
+    // our unit tests, so here we want to skip the AppDelegate when running unit tests.
     BOOL isTesting = NSClassFromString(@"XCTestCase") != nil;
     return UIApplicationMain(argc, argv, nil,
                              isTesting ? nil : NSStringFromClass([AppDelegate class]));
