void () { myFixture.configureByText(ManifestFileType.INSTANCE, "Manifest-Version: 1.0"); IntentionAction intention = myFixture.findSingleIntention(ManifestBundle.message("inspection.newline.fix")); myFixture.launchAction(intention); NonBlockingReadActionImpl.waitForAsyncTaskCompletion(); myFixture.checkResult("Manifest-Version: 1.0\n"); }