[platform_view]delete previously installed app if needed (#110201)

dev/integration_tests/ios_platform_view_tests/ios/PlatformViewUITests/PlatformViewUITests.m

@@ -26,29 +26,34 @@ - (void)setUp {
   [super setUp];
   self.continueAfterFailure = NO;
 
-  // Retry launching the app if it fails to launch.
-  // This is trying to fix a "failed to terminate" failure, which is likely a bug in Xcode.
-  // The solution is based on https://stackoverflow.com/questions/41872848/xctests-failing-to-launch-app-in-simulator-intermittently
-  int remainingLaunchCount = 10;
-  while (true) {
-    self.app = [[XCUIApplication alloc] init];
-    [self.app launch];
-    remainingLaunchCount -= 1;
+  // Delete the previously installed app if needed before running.
+  // This is to address "Failed to terminate" failure.
+  // The solution is based on https://stackoverflow.com/questions/50016018/uitest-failed-to-terminate-com-test-abc3708-after-60-0s-state-is-still-runnin
+  XCUIApplication *springboard = [[XCUIApplication alloc] initWithBundleIdentifier:@"com.apple.springboard"];
+  [springboard activate];
+  XCUIElement *appIcon = springboard.icons[@"ios_platform_view_tests"];
+
+  if ([appIcon waitForExistenceWithTimeout:kStandardTimeOut]) {
+    NSLog(@"Deleting previously installed app.");
+
+    // Make icons wiggle
+    [appIcon pressForDuration:3];
+
+    // Tap the "x" button
+    [appIcon.buttons[@"DeleteButton"] tap];
+    // Tap the delete confirmation
+    [springboard.alerts.buttons[@"Delete App"] tap];
+    // Tap the second delete confirmation
+    [springboard.alerts.buttons[@"Delete"] tap];
+    // Press home button to stop wiggling
+    [XCUIDevice.sharedDevice pressButton:XCUIDeviceButtonHome];
     [NSThread sleepForTimeInterval:3];
-    if (self.app.exists) {
-      // success launch
-      break;
-    }
-
-    if (remainingLaunchCount > 0) {
-      NSLog(@"Retry launch with remaining launch count %d", remainingLaunchCount);
-      [self.app terminate];
-      [NSThread sleepForTimeInterval:3];
-      continue;
-    }
-
-    NSLog(@"Failed to launch");
+  } else {
+    NSLog(@"No previously installed app found.");
   }
+
+  self.app = [[XCUIApplication alloc] init];
+  [self.app launch];
 }
 
 - (void)tearDown {