The best i could do so far:
@Override
protected void describeMismatchSafely(JsonElement expectedJson,
Description mismatchDescription) {
mismatchDescription.appendValue(expectedJson).appendText("\ndifference:\n");
try {
assertEquals(expectedJson.toString(), originalJson.toString());
}
catch (ComparisonFailure e) {
String message = e.getMessage();
message = message.replace("expected:", "");
message = message.replace("but was:", "");
message = message.replaceFirst(">", ">\n");
mismatchDescription.appendText(message);
}
}
This gives me
Expected: <[{"data":"data1","application":{"id":"1"}}]>
but: <[{"data":"data1","application":{"id":"2"}}]>
difference:
<...a1","application":{"[filtered":false,"id":"2"],...>
<...a1","application":{"[id":"1","filtered":false],...>