@Test
public void testNotNull() {
final String testMsg = "Test message {}";
final ObjectMessage msg = new ObjectMessage(testMsg);
final String result = msg.getFormattedMessage();
assertEquals(testMsg, result);
}
@Test
public void testUnsafeWithMutableParams() { // LOG4J2-763
final Mutable param = new Mutable().set("abc");
final ObjectMessage msg = new ObjectMessage(param);
// modify parameter before calling msg.getFormattedMessage
param.set("XYZ");
final String actual = msg.getFormattedMessage();
assertEquals("Expected most recent param value", "XYZ", actual);
}
@Test
public void testSafeAfterGetFormattedMessageIsCalled() { // LOG4J2-763
final Mutable param = new Mutable().set("abc");
final ObjectMessage msg = new ObjectMessage(param);
// modify parameter after calling msg.getFormattedMessage
msg.getFormattedMessage();
param.set("XYZ");
final String actual = msg.getFormattedMessage();
assertEquals("Should use initial param value", "abc", actual);
}
@Test
public void formatTo_usesCachedMessageString() throws Exception {
final StringBuilder charSequence = new StringBuilder("initial value");
final ObjectMessage message = new ObjectMessage(charSequence);
assertEquals("initial value", message.getFormattedMessage());
charSequence.setLength(0);
charSequence.append("different value");
final StringBuilder result = new StringBuilder();
message.formatTo(result);
assertEquals("initial value", result.toString());
}
@Test
public void testNull() {
final ObjectMessage msg = new ObjectMessage(null);
final String result = msg.getFormattedMessage();
assertEquals("null", result);
}