How to use Log4jMockPolicy class of org.powermock.api.easymock.mockpolicies package

Best Powermock code snippet using org.powermock.api.easymock.mockpolicies.Log4jMockPolicy

Source:Log4jUserTest.java Github

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1package demo.org.powermock.examples;2import org.apache.log4j.Logger;3import org.junit.Test;4import org.junit.runner.RunWith;5import org.powermock.api.easymock.mockpolicies.Log4jMockPolicy;6import org.powermock.core.classloader.annotations.MockPolicy;7import org.powermock.core.classloader.annotations.PrepareOnlyThisForTest;8import org.powermock.modules.junit4.PowerMockRunner;9import org.powermock.reflect.Whitebox;10import static org.easymock.EasyMock.expect;11import static org.junit.Assert.assertEquals;12import static org.junit.Assert.assertTrue;13import static org.powermock.api.easymock.PowerMock.*;14@RunWith(PowerMockRunner.class)15@PrepareOnlyThisForTest(Log4jUser.class)16@MockPolicy(Log4jMockPolicy.class)17public class Log4jUserTest {18 @Test19 public void assertThatLog4jMockPolicyWorks() throws Exception {20 final Log4jUser tested = createPartialMockAndInvokeDefaultConstructor(Log4jUser.class, "getMessage");21 final String otherMessage = "other message";22 final String firstMessage = "first message and ";23 expect(tested.getMessage()).andReturn(firstMessage);24 replayAll();25 final String actual = tested.mergeMessageWith(otherMessage);26 Class<? extends Logger> class1 = Whitebox.getInternalState(Log4jUserParent.class, Logger.class).getClass();27 assertTrue(class1.getName().contains("org.apache.log4j.Logger$$EnhancerByCGLIB$$"));28 verifyAll();29 assertEquals(firstMessage + otherMessage, actual);30 }31}...

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Log4jMockPolicy

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1public class Log4jMockPolicy extends AbstractNoOpPolicy {2 public void applyClassLoadingPolicy(final ClassLoader loader) {3 }4 public void applyInterceptionPolicy(final Object target) {5 }6 public void applyStaticInitializationPolicy(final Class<?> target) {7 }8}9@PrepareForTest({Logger.class})10@RunWith(PowerMockRunner.class)11public class TestLog4j {12 public void testLog4j() {13 }14}15@PowerMockIgnore({"javax.management.*", "javax.script.*", "javax.crypto.*", "javax.net.ssl.*", "javax.security.*", "javax.xml.parsers.*", "com.sun.org.apache.xerces.internal.jaxp.*", "com.sun.org.apache.xalan.internal.xsltc.trax.*", "org.xml.sax.*", "org.w3c.dom.*", "com.sun.org.apache.xerces.internal.jaxp.*", "com.sun.org.apache

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Log4jMockPolicy

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1@PrepareForTest({Log4jMockPolicy.class, Logger.class})2public class Log4jMockPolicyTest {3 private static final Logger LOG = Logger.getLogger(Log4jMockPolicyTest.class);4 public void test() throws Exception {5 final Log4jMockPolicy policy = new Log4jMockPolicy();6 final Logger logger = Logger.getLogger("test");7 final Appender appender = EasyMock.createMock(Appender.class);8 appender.doAppend(EasyMock.anyObject(LoggingEvent.class));9 EasyMock.expectLastCall().times(1);10 EasyMock.replay(appender);11 policy.addAppender("test", appender);12 logger.info("test");13 EasyMock.verify(appender);14 }15}16@PrepareForTest({Log4jMockPolicy.class, Logger.class})17public class Log4jMockPolicyTest {18 private static final Logger LOG = Logger.getLogger(Log4jMockPolicyTest.class);19 public void test() throws Exception {20 final Log4jMockPolicy policy = new Log4jMockPolicy();21 final Logger logger = Logger.getLogger("test");22 final Appender appender = EasyMock.createMock(Appender.class);23 appender.doAppend(EasyMock.anyObject(LoggingEvent.class));24 EasyMock.expectLastCall().times(1);25 EasyMock.replay(appender);26 policy.addAppender("test", appender);27 logger.info("test");28 EasyMock.verify(appender);29 }30}31@PrepareForTest({Log4jMockPolicy.class, Logger.class})32public class Log4jMockPolicyTest {33 private static final Logger LOG = Logger.getLogger(Log4jMockPolicyTest.class);34 public void test() throws Exception {35 final Log4jMockPolicy policy = new Log4jMockPolicy();36 final Logger logger = Logger.getLogger("test");37 final Appender appender = EasyMock.createMock(Appender.class);38 appender.doAppend(EasyMock.anyObject(LoggingEvent.class));39 EasyMock.expectLastCall().times(1);40 EasyMock.replay(appender);41 policy.addAppender("test", appender);

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Log4jMockPolicy

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1@RunWith(PowerMockRunner.class)2@PrepareForTest({LoggerFactory.class})3@PowerMockIgnore("javax.management.*")4public class Log4jMockPolicyTest {5 public void testLog4jMockPolicy() {6 Logger logger = LoggerFactory.getLogger("Log4jMockPolicyTest");7 Log4jMockPolicy mockPolicy = new Log4jMockPolicy();8 mockPolicy.apply(logger, null, null, null, null);9 logger.info("Hello World!");10 }11}12PowerMock can be used to mock static methods of other classes as well. For example, the following test class uses the PowerMockito.mockStatic() method to mock the static method of the Calendar class:13package com.baeldung.powermock;14import org.junit.Test;15import org.junit.runner.RunWith;16import org.powermock.api.mockito.PowerMockito;17import org.powermock.core.classloader.annotations.PrepareForTest;18import org.powermock.modules.junit4.PowerMockRunner;19import java.util.Calendar;20import java.util.Date;21import static org.junit.Assert.assertEquals;22import static org.powermock.api.mockito.PowerMockito.when;23@RunWith(PowerMockRunner.class)24@PrepareForTest({Calendar.class})25public class CalendarStaticMethodMockingUnitTest {26 public void givenCalendarClass_whenMockingStaticMethod_thenCorrect() {27 Calendar calendar = Calendar.getInstance();28 calendar.set(2014, 1, 1);29 Date date = calendar.getTime();30 PowerMockito.mockStatic(Calendar.class);31 when(Calendar.getInstance()).thenReturn(calendar);32 assertEquals(date, Calendar.getInstance().getTime());33 }34}

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Log4jMockPolicy

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1@PrepareForTest({Logger.class, Log4jMockPolicy.class})2public class Log4jMockPolicyTest {3 public void testMockStaticMethod() {4 Log4jMockPolicy mockPolicy = new Log4jMockPolicy();5 mockPolicy.applyPolicy(null, null, null, null, null);6 PowerMockito.mockStatic(Logger.class);7 Logger.getLogger(Log4jMockPolicyTest.class).info("Hello");8 PowerMockito.verifyStatic();9 Logger.getLogger(Log4jMockPolicyTest.class).info("Hello");10 }11}

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Log4jMockPolicy

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1@PrepareForTest({Logger.class})2@PowerMockPolicy(Log4jMockPolicy.class)3public class Log4jMockPolicyTest {4 public void testLog4j() {5 PowerMockito.mockStatic(Logger.class);6 Logger logger = PowerMockito.mock(Logger.class);7 PowerMockito.when(Logger.getLogger(Log4jMockPolicyTest.class)).thenReturn(logger);8 PowerMockito.when(logger.isDebugEnabled()).thenReturn(true);9 PowerMockito.doNothing().when(logger).debug(Mockito.anyString());10 Log4jMockPolicy.log("test");11 PowerMockito.verifyStatic();12 Logger.getLogger(Log4jMockPolicyTest.class);13 Mockito.verify(logger, Mockito.times(1)).isDebugEnabled();14 Mockito.verify(logger, Mockito.times(1)).debug(Mockito.anyString());15 }16}17@PrepareForTest({Logger.class})18@PowerMockPolicy(Log4jMockPolicy.class)19public class Log4jMockPolicyTest {20 public void testLog4j() {21 PowerMockito.mockStatic(Logger.class);22 Logger logger = PowerMockito.mock(Logger.class);23 PowerMockito.when(Logger.getLogger(Log4jMockPolicyTest.class)).thenReturn(logger);24 PowerMockito.when(logger.isDebugEnabled()).thenReturn(true);25 PowerMockito.doNothing().when(logger).debug(Mockito.anyString());26 Log4jMockPolicy.log("test");

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