How to use assertThatMockingOfTheRuntimeSystemClassWorks method of powermock.modules.test.mockito.junit4.delegate.SystemClassUserCases class

Best Powermock code snippet using powermock.modules.test.mockito.junit4.delegate.SystemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks

Source:SystemClassUserCases.java Github

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...48 when(URLEncoder.encode("string", "enc")).thenReturn("something");49 assertEquals("something", new SystemClassUser().performEncode());50 }51 @Test52 public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {53 mockStatic(Runtime.class);54 Runtime runtimeMock = mock(Runtime.class);55 Process processMock = mock(Process.class);56 when(Runtime.getRuntime()).thenReturn(runtimeMock);57 when(runtimeMock.exec("command")).thenReturn(processMock);58 assertSame(processMock, new SystemClassUser().executeCommand());59 }60 @Test61 public void assertThatMockingOfFinalSystemClassesWorks() throws Exception {62 mockStatic(System.class);63 when(System.getProperty("property")).thenReturn("my property");64 assertEquals("my property", new SystemClassUser().getSystemProperty());65 }66 @Test...

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assertThatMockingOfTheRuntimeSystemClassWorks

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1Add the following import statements to your test class:2import org.junit.runner.RunWith; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.modules.junit4.PowerMockRunner;3@RunWith(PowerMockRunner.class)4@PrepareForTest({ClassToMock.class, ClassToMock2.class})5Add the following import statements to your test class:6import org.junit.Rule; import org.junit.rules.TestRule; import org

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assertThatMockingOfTheRuntimeSystemClassWorks

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1package com.example;2import org.junit.Test;3import org.junit.runner.RunWith;4import org.powermock.core.classloader.annotations.PrepareForTest;5import org.powermock.modules.junit4.PowerMockRunner;6import static org.powermock.api.mockito.PowerMockito.mockStatic;7import static org.powermock.api.mockito.PowerMockito.when;8@RunWith(PowerMockRunner.class)9@PrepareForTest(System.class)10public class SystemClassUserCasesTest {11 public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {12 mockStatic(System.class);13 when(System.getProperty("foo")).thenReturn("bar");14 new SystemClassUserCases().useSystem();15 }16}17package com.example;18import java.io.PrintStream;19public class SystemClassUserCases {20 public void useSystem() {21 System.out.println("foo");22 System.out.println(System.getProperty("foo"));23 }24}25 at com.example.SystemClassUserCasesTest.assertThatMockingOfTheRuntimeSystemClassWorks(SystemClassUserCasesTest.java:20)26import static org.mockito.Mockito.mock;27import static org.mockito.Mockito.when;28import java.io.PrintStream;29import org.junit.Before;30import org.junit.Test;31public class SystemClassUserCasesTest {32 public void setup() {33 System.setOut(mock(PrintStream.class));34 }35 public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {36 when(System.getProperty("foo")).thenReturn("bar");37 new SystemClassUserCases().useSystem();38 }39}40 at com.example.SystemClassUserCases.useSystem(SystemClassUserCases.java:11)41 at com.example.SystemClassUserCasesTest.assertThatMockingOfTheRuntimeSystemClassWorks(SystemClassUserCasesTest.java:20)

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assertThatMockingOfTheRuntimeSystemClassWorks

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1public final SystemClassUserCases systemClassUserCases = new SystemClassUserCases();2public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {3 systemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks();4}5public final SystemClassUserCases systemClassUserCases = new SystemClassUserCases();6public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {7 systemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks();8}9public final SystemClassUserCases systemClassUserCases = new SystemClassUserCases();10public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {11 systemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks();12}13public final SystemClassUserCases systemClassUserCases = new SystemClassUserCases();14public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {15 systemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks();16}17public final SystemClassUserCases systemClassUserCases = new SystemClassUserCases();18public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {19 systemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks();20}21public final SystemClassUserCases systemClassUserCases = new SystemClassUserCases();22public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {23 systemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks();24}

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assertThatMockingOfTheRuntimeSystemClassWorks

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1 public void assertThatMockingOfTheRuntimeSystemClassWorks() throws Exception {2 PowerMockito.mockStatic(System.class);3 PowerMockito.when(System.class, "currentTimeMillis").thenReturn(2000L);4 assertThat(System.currentTimeMillis(), is(2000L));5 }6 assertThatMockingOfTheRuntimeSystemClassWorks(org.powermock.modules.test.mockito.junit4.delegate.SystemClassUserCases): Unexpected exception, expected<java.lang.NullPointerException> but was<java.lang.IllegalStateException>7 at org.powermock.modules.test.mockito.junit4.delegate.SystemClassUserCases.assertThatMockingOfTheRuntimeSystemClassWorks(SystemClassUserCases.java:38)8I have the same problem. I want to mock the System.out.println() method. But I get an exception9I have the same problem. I want to mock the System.out.println() method. But I get an exception10I have the same problem. I want to mock the System.out.println() method. But I get an exception11I have the same problem. I want to mock the System.out.println() method. But I get an exception

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