in src/main/java/org/junit/Assert.java [110:122]
public static void assertEquals(String message, Object expected,
Object actual) {
if (equalsRegardingNull(expected, actual)) {
return;
}
if (expected instanceof String && actual instanceof String) {
String cleanMessage = message == null ? "" : message;
throw new ComparisonFailure(cleanMessage, (String) expected,
(String) actual);
} else {
failNotEquals(message, expected, actual);
}
}