public static void printAllMessages() {
if (lastInstance == null) {
System.out.println(
"Unable to print out trace level root logger messages - please "
+ "configure MemoryAppender on the <root> logger in log4j - config.xml");
} else {
System.out.println(
String.format(
"Printing last %d of %d log messages", eventsList.size(), messageCount.get()));
lastInstance.appendAll();
}
}
public static void assertMessagesLogged(
Collection<String> expectedPatternsRO,
Collection<String> unexpectedPatterns,
String filterPattern,
boolean verbose) {
Set<String> encounteredPatterns = new TreeSet<>();
List<String> encounteredUnexpectedMessages = new ArrayList<>();
List<String> expectedPatterns = new ArrayList<>(expectedPatternsRO);
Collection<String> unexpected =
unexpectedPatterns == null ? Collections.emptyList() : unexpectedPatterns;
for (LoggingEvent event : MemoryAppender.getEvents()) {
String message = event.getMessage().toString();
if (filterPattern == null || message.matches(filterPattern)) {
if (verbose) {
System.out.println(event.getLevel() + " " + message);
}
Iterator<String> iterator = expectedPatterns.iterator();
while (iterator.hasNext()) {
String pattern = iterator.next();
if (message.matches(".*" + pattern + ".*")) {
encounteredPatterns.add(pattern);
iterator.remove();
}
}
iterator = unexpected.iterator();
while (iterator.hasNext()) {
String pattern = iterator.next();
if (message.matches(".*" + pattern + ".*")) {
encounteredUnexpectedMessages.add(message);
}
}
}
}
StringBuffer errorMessage = new StringBuffer();
if (!encounteredUnexpectedMessages.isEmpty()) {
errorMessage.append("\n- the following unexpected messages were encountered: ");
for (String message : encounteredUnexpectedMessages) {
errorMessage.append("\n " + message);
}
}
if (!expectedPatterns.isEmpty()) {
errorMessage.append(
"\n- the following patterns of log messages were not logged: "
+ expectedPatterns
+ (verbose ? ",\nonly these were logged: " + encounteredPatterns : ""));
}
assertTrue(
"Log messages were not as expected" + errorMessage.toString(),
expectedPatterns.isEmpty() && encounteredUnexpectedMessages.isEmpty());
}