assertThat(editorPage.getValidationMessageCurrentTarget())
.isEqualTo("Warning: none, Errors: 1")
.as("The notification area shows there's an error");
editorPage = editorPage.openValidationBox();
assertThat(editorPage.getValidationMessageCurrentTarget())
.contains("Target has more tabs (\\t) than source "
+ "(source: 0, target: 1)")
.as("The correct error is shown for the validation");