org.apache.logging.log4j.test.appender.ListAppender#getMessages ( )源码实例Demo

@Test
public void testMDC() throws Exception {
    MDC.put("Type", "Service");
    MDC.put("Name", "John Smith");
    try {
        final Logger logger = Logger.getLogger("org.apache.test.logging");
        logger.debug("This is a test");
        final ListAppender listApp = (ListAppender) CTX.getAppender("List");
        assertNotNull(listApp);
        final List<String> msgs = listApp.getMessages();
        assertNotNull("No messages received", msgs);
        assertTrue(msgs.size() == 1);
        assertTrue("Type is missing", msgs.get(0).contains("Type=Service"));
        assertTrue("Name is missing", msgs.get(0).contains("Name=John Smith"));
    } finally {
        MDC.remove("Type");
        MDC.remove("Name");
    }
}
 

@Test
public void testMDC() throws Exception {
    MDC.put("Key1", "John");
    MDC.put("Key2", "Smith");
    try {
        final Logger logger = Logger.getLogger("org.apache.test.logging");
        logger.debug("This is a test");
        final ListAppender listApp = (ListAppender) CTX.getAppender("List");
        assertNotNull(listApp);
        final List<String> msgs = listApp.getMessages();
        assertNotNull("No messages received", msgs);
        assertTrue(msgs.size() == 1);
        assertTrue("Key1 is missing", msgs.get(0).contains("Key1=John"));
        assertTrue("Key2 is missing", msgs.get(0).contains("Key2=Smith"));
    } finally {
        MDC.remove("Key1");
        MDC.remove("Key2");
    }
}
 

@Test
public void testJavaScriptPatternSelector() throws Exception {
    final org.apache.logging.log4j.Logger logger = LogManager.getLogger("TestJavaScriptPatternSelector");
    final org.apache.logging.log4j.Logger logger2 = LogManager.getLogger("JavascriptNoLocation");
    logger.traceEntry();
    logger.info("Hello World");
    logger2.info("No location information");
    logger.traceExit();
    final ListAppender app = (ListAppender) context.getRequiredAppender("List3");
    assertNotNull("No ListAppender", app);
    final List<String> messages = app.getMessages();
    assertNotNull("No Messages", messages);
    assertTrue("Incorrect number of messages. Expected 4, Actual " + messages.size() + ": " + messages, messages.size() == 4);
    String expect = "[TRACE] TestJavaScriptPatternSelector ====== " +
            "o.a.l.l.c.PatternSelectorTest.testJavaScriptPatternSelector:85 Enter ======" + Strings.LINE_SEPARATOR;
    assertEquals(expect, messages.get(0));
    expect = "[INFO ] TestJavaScriptPatternSelector " +
            "o.a.l.l.c.PatternSelectorTest.testJavaScriptPatternSelector.86 Hello World" + Strings.LINE_SEPARATOR;
    assertEquals(expect, messages.get(1));
    assertEquals("[INFO ] JavascriptNoLocation No location information" + Strings.LINE_SEPARATOR, messages.get(2));
    app.clear();
}
 

@Test
@SuppressWarnings("deprecation")
public void testLog() {
    final PatternLayout layout = PatternLayout.newBuilder().setPattern("%d %C %L %m").build();
    final ListAppender appender = new ListAppender("List", null, layout, false, false);
    appender.start();
    final Logger root = Logger.getRootLogger();
    try {
        ((org.apache.logging.log4j.core.Logger) root.getLogger()).addAppender(appender);
        root.setLevel(Level.INFO);
        final MyLogger log = new MyLogger(root);
        log.logInfo("This is a test", null);
        root.log(Priority.INFO, "Test msg2", null);
        root.log(Priority.INFO, "Test msg3");
        final List<String> msgs = appender.getMessages();
        assertTrue("Incorrect number of messages", msgs.size() == 3);
        final String msg = msgs.get(0);
        assertTrue("Message contains incorrect class name: " + msg, msg.contains(LoggerTest.class.getName()));
        appender.stop();
    } finally {
        ((org.apache.logging.log4j.core.Logger) root.getLogger()).removeAppender(appender);
    }
}
 

@Test
public void testJavascriptFilter() throws Exception {
    final Logger logger = LogManager.getLogger("TestJavaScriptFilter");
    logger.traceEntry();
    logger.info("This should not be logged");
    ThreadContext.put("UserId", "JohnDoe");
    logger.info("This should be logged");
    ThreadContext.clearMap();
    final ListAppender app = getContext().getListAppender("List");
    final List<String> messages = app.getMessages();
    try {
        assertNotNull("No Messages", messages);
        assertTrue("Incorrect number of messages. Expected 2, Actual " + messages.size(), messages.size() == 2);
    } finally {
        app.clear();
    }
}
 

@Test
public void test() {
    logger.info("This is a test.", new Exception("Test exception!"));
    ListAppender listAppender = loggerContextRule.getListAppender("ListAppender");
    Assert.assertNotNull(listAppender);
    List<String> events = listAppender.getMessages();
    Assert.assertNotNull(events);
    Assert.assertEquals(1, events.size());
    String logEvent = events.get(0);
    Assert.assertNotNull(logEvent);
    Assert.assertFalse("\"org.junit\" should not be here", logEvent.contains("org.junit"));
    Assert.assertFalse("\"org.eclipse\" should not be here", logEvent.contains("org.eclipse"));
    //
    Layout<? extends Serializable> layout = listAppender.getLayout();
    PatternLayout pLayout = (PatternLayout) layout;
    Assert.assertNotNull(pLayout);
    Serializer eventSerializer = pLayout.getEventSerializer();
    Assert.assertNotNull(eventSerializer);
    //
    Assert.assertTrue("Missing \"|\"", logEvent.contains("|"));
}
 

@Test
public void testClassLogger() throws Exception {
    final ListAppender app = ctx.getListAppender("Class").clear();
    final Logger logger = LoggerFactory.getLogger("ClassLogger");
    logger.info("Ignored message contents.");
    logger.warn("Verifying the caller class is still correct.");
    logger.error("Hopefully nobody breaks me!");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 3, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller class name.", this.getClass().getName(), message);
    }
}
 

@Test
public void testMethodLogger() throws Exception {
    final ListAppender app = ctx.getListAppender("Method").clear();
    final Logger logger = LoggerFactory.getLogger("MethodLogger");
    logger.info("More messages.");
    logger.warn("CATASTROPHE INCOMING!");
    logger.error("ZOMBIES!!!");
    logger.warn("brains~~~");
    logger.info("Itchy. Tasty.");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 5, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller method name.", "testMethodLogger", message);
    }
}
 

@Test
public void testWithProps() {
    final ListAppender listAppender = context.getListAppender("List");
    assertNotNull("No List Appender", listAppender);

    try {
        assertThat(context.getConfiguration(), is(instanceOf(XmlConfiguration.class)));
        Logger logger = LogManager.getLogger(XmlLoggerPropsTest.class);
        logger.debug("Test with props");
        logger = LogManager.getLogger("tiny.bubbles");
        logger.debug("Test on root");
        final List<String> events = listAppender.getMessages();
        assertTrue("No events", events.size() > 0);
        assertTrue("Incorrect number of events", events.size() == 2);
        assertThat(events.get(0), allOf(
            containsString("user="),
            containsString("phrasex=****"),
            containsString("test=test"),
            containsString("test2=test2default"),
            containsString("test3=Unknown"),
            containsString("test4=test"),
            containsString("test5=test"),
            containsString("attribKey=attribValue"),
            containsString("duplicateKey=nodeValue")
        ));
        assertThat(events.get(1), allOf(
            containsString("user="),
            containsString("phrasex=****"),
            containsString("test=test"),
            containsString("test2=test2default"),
            containsString("test3=Unknown"),
            containsString("test4=test"),
            containsString("test5=test"),
            containsString("attribKey=attribValue"),
            containsString("duplicateKey=nodeValue")
        ));
    } finally {
        System.clearProperty("test");
    }
}
 

static void testLayoutNormalApi(final Logger root, final AbstractCsvLayout layout, final boolean messageApi)
        throws Exception {
    removeAppenders(root);
    // set up appender
    final ListAppender appender = new ListAppender("List", null, layout, true, false);
    appender.start();

    appender.countDownLatch = new CountDownLatch(4);

    // set appender on root and set level to debug
    root.addAppender(appender);
    root.setLevel(Level.DEBUG);

    // output messages
    if (messageApi) {
        logDebugObjectArrayMessage(root);
    } else {
        logDebugNormalApi(root);
    }
    final int msgCount = 4;
    if (appender.getMessages().size() < msgCount) {
        // wait until background thread finished processing
        appender.countDownLatch.await(10, TimeUnit.SECONDS);
    }
    assertEquals("Background thread did not finish processing: msg count", msgCount, appender.getMessages().size());

    // don't stop appender until background thread is done
    appender.stop();

    final List<String> list = appender.getMessages();
    final char d = layout.getFormat().getDelimiter();
    Assert.assertEquals("1" + d + "2" + d + "3", list.get(0));
    Assert.assertEquals("2" + d + "3", list.get(1));
    Assert.assertEquals("5" + d + "6", list.get(2));
    Assert.assertEquals("7" + d + "8" + d + "9" + d + "10", list.get(3));
}
 

@Test
public void testMethodLogger() throws Exception {
    final ListAppender app = ctx.getListAppender("Method").clear();
    final Logger logger = LoggerFactory.getLogger("MethodLogger");
    logger.info("More messages.");
    logger.warn("CATASTROPHE INCOMING!");
    logger.error("ZOMBIES!!!");
    logger.warn("brains~~~");
    logger.info("Itchy. Tasty.");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 5, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller method name.", "testMethodLogger", message);
    }
}
 

@Test
public void testClassLogger() throws Exception {
    final ListAppender app = context.getListAppender("Class").clear();
    final Logger logger = context.getLogger("ClassLogger");
    logger.info("Ignored message contents.");
    logger.warn("Verifying the caller class is still correct.");
    logger.error("Hopefully nobody breaks me!");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 3, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller class name.", this.getClass().getName(), message);
    }
}
 

@Test
public void testClassLogger() throws Exception {
    final ListAppender app = ctx.getListAppender("Class").clear();
    final Logger logger = Logger.getLogger("ClassLogger");
    logger.info("Ignored message contents.");
    logger.warn("Verifying the caller class is still correct.");
    logger.error("Hopefully nobody breaks me!");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 3, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller class name.", this.getClass().getName(), message);
    }
}
 

private void verify(final String name, final String expected) {
    final ListAppender listApp = CTX.getListAppender(name);
    final List<String> events = listApp.getMessages();
    assertTrue("Incorrect number of messages. Expected 1 Actual " + events.size(), events.size()== 1);
    final String actual = events.get(0);
    assertEquals("Incorrect message. Expected " + expected + ". Actual " + actual, expected, actual);
    listApp.clear();
}
 

public void assertMessages(final String msg, final int size, final String methodName) {
    final ListAppender appender = ctx.getListAppender("ClassAndMethod");
    assertEquals(msg + ".size", size, appender.getMessages().size());
    for (final String message : appender.getMessages()) {
        assertEquals(msg + " has incorrect caller info", this.getClass().getName() + '.' + methodName, message);
    }
}
 

@Test
public void testNoArgBuilderCallerClassInfo() throws Exception {
    try (final PrintStream ps = IoBuilder.forLogger().buildPrintStream()) {
        ps.println("discarded");
        final ListAppender app = context.getListAppender("IoBuilderTest");
        final List<String> messages = app.getMessages();
        assertThat(messages, not(empty()));
        assertThat(messages, hasSize(1));
        final String message = messages.get(0);
        assertThat(message, startsWith(getClass().getName() + ".testNoArgBuilderCallerClassInfo"));
        app.clear();
    }
}
 

@Test
public void testMethodLogger() throws Exception {
    final ListAppender app = context.getListAppender("Method").clear();
    final Logger logger = context.getLogger("MethodLogger");
    logger.info("More messages.");
    logger.warn("CATASTROPHE INCOMING!");
    logger.error("ZOMBIES!!!");
    logger.fatal("brains~~~");
    logger.info("Itchy. Tasty.");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 5, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller method name.", "testMethodLogger", message);
    }
}
 

@Test
public void testClassLogger() throws Exception {
    final ListAppender app = ctx.getListAppender("Class").clear();
    final Logger logger = Logger.getLogger("ClassLogger");
    logger.info("Ignored message contents.");
    logger.warn("Verifying the caller class is still correct.");
    logger.error("Hopefully nobody breaks me!");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 3, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller class name.", this.getClass().getName(), message);
    }
}
 

@Test
public void testClassLogger() throws Exception {
    final ListAppender app = ctx.getListAppender("Class").clear();
    final Logger logger = Logger.getLogger("ClassLogger");
    logger.info("Ignored message contents.");
    logger.warning("Verifying the caller class is still correct.");
    logger.severe("Hopefully nobody breaks me!");
    final List<String> messages = app.getMessages();
    assertEquals("Incorrect number of messages.", 3, messages.size());
    for (final String message : messages) {
        assertEquals("Incorrect caller class name.", this.getClass().getName(), message);
    }
}
 

private void verify(final String expected) {
    final ListAppender listApp = context.getListAppender("List");
    final List<String> events = listApp.getMessages();
    try
    {
        assertEquals("Incorrect number of messages.", 1, events.size());
        assertEquals("Incorrect message.", "o.a.l.l.t.EnterTagTest " + expected, events.get(0));
    }
    finally
    {
        listApp.clear();
    }
}