How to use field method of org.powermock.api.support.membermodification.MemberMatcher class

Best Powermock code snippet using org.powermock.api.support.membermodification.MemberMatcher.field

Source:MemberModificationExampleTest.java Github

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...16 */17import com.lyc.study.go019.exmaple.staticandinstance.StaticAndInstanceDemo;18import com.lyc.study.go019.exmaple.suppressconstructor.SuppressConstructorHierarchy;19import com.lyc.study.go019.exmaple.suppresseverything.SuppressEverything;20import com.lyc.study.go019.exmaple.suppressfield.SuppressField;21import com.lyc.study.go019.exmaple.suppressmethod.SuppressMethod;22import org.junit.Rule;23import org.junit.Test;24import org.junit.runner.RunWith;25import org.powermock.core.classloader.annotations.PrepareForTest;26import org.powermock.modules.junit4.PowerMockRunner;27import org.powermock.modules.junit4.rule.PowerMockRule;28import java.lang.reflect.InvocationHandler;29import java.lang.reflect.Method;30import static org.hamcrest.CoreMatchers.instanceOf;31import static org.hamcrest.CoreMatchers.is;32import static org.junit.Assert.assertEquals;33import static org.junit.Assert.assertNull;34import static org.junit.Assert.assertThat;35import static org.junit.Assert.fail;36import static org.powermock.api.support.membermodification.MemberMatcher.constructor;37import static org.powermock.api.support.membermodification.MemberMatcher.constructorsDeclaredIn;38import static org.powermock.api.support.membermodification.MemberMatcher.everythingDeclaredIn;39import static org.powermock.api.support.membermodification.MemberMatcher.field;40import static org.powermock.api.support.membermodification.MemberMatcher.method;41import static org.powermock.api.support.membermodification.MemberMatcher.methods;42import static org.powermock.api.support.membermodification.MemberMatcher.methodsDeclaredIn;43import static org.powermock.api.support.membermodification.MemberModifier.replace;44import static org.powermock.api.support.membermodification.MemberModifier.stub;45import static org.powermock.api.support.membermodification.MemberModifier.suppress;46/**47 * Demonstrates PowerMock's ability to modify member structures.48 */49@RunWith(PowerMockRunner.class)50@PrepareForTest({SuppressMethod.class, SuppressField.class, SuppressEverything.class})51public class MemberModificationExampleTest {52 @Rule53 public PowerMockRule powerMockRule = new PowerMockRule();54 @Test55 public void suppressSingleMethodExample() throws Exception {56 suppress(method(SuppressMethod.class, "getObject"));57 assertNull(new SuppressMethod().getObject());58 }59 @Test60 public void suppressMultipleMethodsExample1() throws Exception {61 suppress(methods(SuppressMethod.class, "getObject", "getInt"));62 assertNull(new SuppressMethod().getObject());63 assertEquals(0, new SuppressMethod().getInt());64 }65 @Test66 public void suppressMultipleMethodsExample2() throws Exception {67 suppress(methods(method(SuppressMethod.class, "getObject"), method(SuppressMethod.class, "getInt")));68 assertNull(new SuppressMethod().getObject());69 assertEquals(0, new SuppressMethod().getInt());70 }71 @Test72 public void suppressAllMethodsExample() throws Exception {73 suppress(methodsDeclaredIn(SuppressMethod.class));74 final SuppressMethod tested = new SuppressMethod();75 assertNull(tested.getObject());76 assertNull(SuppressMethod.getObjectStatic());77 assertEquals(0, tested.getByte());78 }79 @Test80 public void suppressSingleFieldExample() throws Exception {81 suppress(field(SuppressField.class, "domainObject"));82 SuppressField tested = new SuppressField();83 assertNull(tested.getDomainObject());84 }85 @Test86 public void suppressConstructorExample() throws Exception {87 suppress(constructor(SuppressConstructorHierarchy.class));88 SuppressConstructorHierarchy tested = new SuppressConstructorHierarchy("message");89 assertEquals(42, tested.getNumber());90 assertNull(tested.getMessage());91 }92 @Test93 public void stubSingleMethodExample() throws Exception {94 final String expectedReturnValue = "new";95 stub(method(SuppressMethod.class, "getObject")).toReturn(expectedReturnValue);...

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Source:PowerMockSuppressingUnwantedBehaviorTest.java Github

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1package powermock;2import static org.junit.Assert.assertEquals;3import static org.junit.Assert.assertNull;4import static org.powermock.api.support.membermodification.MemberMatcher.constructor;5import static org.powermock.api.support.membermodification.MemberMatcher.field;6import static org.powermock.api.support.membermodification.MemberMatcher.method;7import static org.powermock.api.support.membermodification.MemberModifier.suppress;8import org.junit.Test;9import org.junit.runner.RunWith;10import org.powermock.core.classloader.annotations.PrepareForTest;11import org.powermock.core.classloader.annotations.SuppressStaticInitializationFor;12import org.powermock.modules.junit4.PowerMockRunner;13import org.powermock.reflect.Whitebox;14import powermock.PowerMockSuppressingUnwantedBehaviorTest.ExampleWithEvilMethod;15import powermock.PowerMockSuppressingUnwantedBehaviorTest.ExampleWithEvilParent;16/**17 * <pre>18 *19 * 1. Use the @RunWith(PowerMockRunner.class) annotation at the class-level of the test case.20 * 2. Use the @PrepareForTest(ClassWithEvilParentConstructor.class) annotation at the class-level of the test case in combination with suppress(constructor(EvilParent.class)) to suppress all constructors for the EvilParent class.21 * 3. Use the Whitebox.newInstance(ClassWithEvilConstructor.class) method to instantiate a class without invoking the constructor what so ever.22 * 4. Use the @SuppressStaticInitializationFor("org.mycompany.ClassWithEvilStaticInitializer") annotation to remove the static initializer for the the org.mycompany.ClassWithEvilStaticInitializer class.23 * 5. Use the @PrepareForTest(ClassWithEvilMethod.class) annotation at the class-level of the test case in combination with suppress(method(ClassWithEvilMethod.class, "methodName")) to suppress the method with name "methodName" in the ClassWithEvilMethod class.24 * 6. Use the @PrepareForTest(ClassWithEvilField.class) annotation at the class-level of the test case in combination with suppress(field(ClassWithEvilField.class, "fieldName")) to suppress the field with name "fieldName" in the ClassWithEvilField class.25 * </pre>26 * 需要加上下面两个注解27 *28 * @author shaoyijiong29 * @date 2021/8/2230 */31@RunWith(PowerMockRunner.class)32@PrepareForTest({ExampleWithEvilParent.class, ExampleWithEvilMethod.class})33@SuppressStaticInitializationFor("powermock.ExampleWithEvilStaticInitializer")34public class PowerMockSuppressingUnwantedBehaviorTest {35 public static class EvilParent {36 public EvilParent() {37 System.loadLibrary("evil.dll");38 }39 }40 public static class ExampleWithEvilParent extends EvilParent {41 private final String message;42 public ExampleWithEvilParent(String message) {43 this.message = message;44 }45 public String getMessage() {46 return message;47 }48 }49 /**50 * 禁止超类构造函数51 */52 @Test53 public void testSuppressConstructorOfEvilParent() throws Exception {54 suppress(constructor(EvilParent.class));55 final String message = "myMessage";56 ExampleWithEvilParent tested = new ExampleWithEvilParent(message);57 assertEquals(message, tested.getMessage());58 }59 public static class ExampleWithEvilConstructor {60 private final String message;61 public ExampleWithEvilConstructor(String message) {62 System.loadLibrary("evil.dll");63 this.message = message;64 }65 public String getMessage() {66 return message;67 }68 }69 /**70 * 禁止构造函数 使用Whitebox.newInstance实例化对象 , 绕过构造函数 不需要@RunWith和@PrepareForTest注解71 */72 @Test73 public void testSuppressOwnConstructor() throws Exception {74 ExampleWithEvilConstructor tested = Whitebox.newInstance(ExampleWithEvilConstructor.class);75 assertNull(tested.getMessage());76 }77 public static class ExampleWithEvilMethod {78 private final String message;79 public ExampleWithEvilMethod(String message) {80 this.message = message;81 }82 public String getMessage() {83 return message + getEvilMessage();84 }85 private String getEvilMessage() {86 System.loadLibrary("evil.dll");87 return "evil!";88 }89 }90 /**91 * 禁止方法92 */93 @Test94 public void testSuppressMethod() throws Exception {95 suppress(method(ExampleWithEvilMethod.class, "getEvilMessage"));96 final String message = "myMessage";97 ExampleWithEvilMethod tested = new ExampleWithEvilMethod(message);98 assertEquals(message, tested.getMessage());99 }100 /**101 * 静止静态初始化方法 需要加上 @SuppressStaticInitializationFor 注解102 */103 @Test104 public void testSuppressStaticInitializer() throws Exception {105 final String message = "myMessage";106 ExampleWithEvilStaticInitializer tested = new ExampleWithEvilStaticInitializer(message);107 assertEquals(message, tested.getMessage());108 }109 public static class MyClass {110 private Object myObject = new Object();111 public Object getMyObject() {112 return myObject;113 }114 }115 /**116 * 禁止初始化字段 调用getMyObject将返回空117 */118 @Test119 public void testSuppressField() throws Exception {120 suppress(field(MyClass.class, "myObject"));121 MyClass myClass = new MyClass();122 myClass.getMyObject();123 }124}...

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1import org.powermock.api.support.membermodification.MemberModifier;2import org.powermock.api.support.membermodification.MemberMatcher;3import org.powermock.core.classloader.annotations.PrepareForTest;4import org.powermock.modules.junit4.PowerMockRunner;5import org.powermock.modules.junit4.PowerMockRunnerDelegate;6import org.junit.Test;7import org.junit.runner.RunWith;8import org.mockito.runners.MockitoJUnitRunner;9import static org.junit.Assert.assertEquals;10@RunWith(PowerMockRunner.class)11@PowerMockRunnerDelegate(MockitoJUnitRunner.class)12@PrepareForTest({ClassToTest.class})13public class ClassToTestTest {14 public void test() throws Exception {15 ClassToTest classToTest = new ClassToTest();16 MemberModifier.field(ClassToTest.class, "a").set(classToTest, 10);17 assertEquals(10, classToTest.getA());18 }19}20import org.powermock.api.support.membermodification.MemberModifier;21import org.powermock.api.support.membermodification.MemberMatcher;22import org.powermock.core.classloader.annotations.PrepareForTest;23import org.powermock.modules.junit4.PowerMockRunner;24import org.powermock.modules.junit4.PowerMockRunnerDelegate;25import org.junit.Test;26import org.junit.runner.RunWith;27import org.mockito.runners.MockitoJUnitRunner;28import static org.junit.Assert.assertEquals;29@RunWith(PowerMockRunner.class)30@PowerMockRunnerDelegate(MockitoJUnitRunner.class)31@PrepareForTest({ClassToTest.class})32public class ClassToTestTest {33 public void test() throws Exception {34 MemberModifier.field(ClassToTest.class, "a").set(10);35 assertEquals(10, ClassToTest.getA());36 }37}38import org.powermock.api.support.membermodification.MemberModifier;39import org.powermock.api.support.membermodification.MemberMatcher;40import org.powermock.core.classloader.annotations.PrepareForTest;41import org.powermock.modules.junit4.PowerMockRunner;42import org.powermock.modules.junit4.PowerMockRunnerDelegate;43import org.junit.Test;44import org.junit.runner.RunWith;45import org.mockito.runners.MockitoJUnit

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1package org.powermock.examples.tutorial.membermodification;2import org.powermock.api.support.membermodification.MemberMatcher;3import org.powermock.core.classloader.annotations.PrepareForTest;4import java.lang.reflect.Field;5import static org.powermock.api.support.membermodification.MemberModifier.field;6@PrepareForTest(MemberMatcher.class)7public class FieldExample {8 public static void main(String[] args) throws Exception {9 Field field = MemberMatcher.field(Foo.class, "bar");10 System.out.println(field.get(new Foo()));11 }12}13package org.powermock.examples.tutorial.membermodification;14import org.powermock.api.support.membermodification.MemberModifier;15import static org.powermock.api.support.membermodification.MemberModifier.field;16public class FieldExample {17 public static void main(String[] args) throws Exception {18 Foo foo = new Foo();19 System.out.println(foo.bar);20 field(Foo.class, "bar").set(foo, "new value");21 System.out.println(foo.bar);22 }23}24package org.powermock.examples.tutorial.membermodification;25import org.powermock.api.support.membermodification.MemberModifier;26import static org.powermock.api.support.membermodification.MemberModifier.field;27public class FieldExample {28 public static void main(String[] args) throws Exception {29 System.out.println(Foo.baz);30 field(Foo.class, "baz").set(null, "new value");31 System.out.println(Foo.baz);32 }33}34package org.powermock.examples.tutorial.membermodification;35import org.powermock.api.support.membermodification.MemberModifier;36import static org.powermock.api.support.membermodification.MemberModifier.field;37public class FieldExample {38 public static void main(String[] args) throws Exception {39 Foo foo = new Foo();40 System.out.println(foo.bar);41 field(Foo.class, "bar").set(foo, "new value");42 System.out.println(foo.bar);43 }44}

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1package com.java4s.app;2import org.powermock.api.support.membermodification.MemberMatcher;3import org.powermock.api.support.membermodification.MemberModifier;4public class FieldDemo {5 public static void main(String[] args) throws Exception {6 FieldDemo demo = new FieldDemo();7 MemberModifier.field(FieldDemo.class, "name").set(demo, "java4s");8 System.out.println(demo.getName());9 }10 private String name = "java2s.com";11 public String getName() {12 return name;13 }14}

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1public class 4 {2 public static void main(String[] args) throws Exception {3 Class<?> classToMock = Class.forName("org.powermock.api.support.membermodification.MemberMatcher");4 Object classToMockInstance = classToMock.newInstance();5 Method method = classToMock.getMethod("field", Class.class, String.class);6 Object result = method.invoke(classToMockInstance, Class.forName("com.example.FieldExample"), "field");7 System.out.println(result);8 }9}10public class 5 {11 public static void main(String[] args) throws Exception {12 Class<?> classToMock = Class.forName("org.powermock.api.support.membermodification.MemberMatcher");13 Object classToMockInstance = classToMock.newInstance();14 Method method = classToMock.getMethod("field", Class.class, String.class);15 Object result = method.invoke(classToMockInstance, Class.forName("com.example.FieldExample"), "field");16 System.out.println(result);17 }18}19public class 6 {20 public static void main(String[] args) throws Exception {21 Class<?> classToMock = Class.forName("org.powermock.api.support.membermodification.MemberMatcher");22 Object classToMockInstance = classToMock.newInstance();23 Method method = classToMock.getMethod("field", Class.class, String.class);24 Object result = method.invoke(classToMockInstance, Class.forName("com.example.FieldExample"), "field");25 System.out.println(result);26 }27}28public class 7 {29 public static void main(String[] args) throws Exception {30 Class<?> classToMock = Class.forName("org.powermock.api.support.membermodification.MemberMatcher");31 Object classToMockInstance = classToMock.newInstance();32 Method method = classToMock.getMethod("field", Class.class, String.class);33 Object result = method.invoke(classToMockInstance, Class.forName("com.example.FieldExample"), "field");34 System.out.println(result);35 }36}37public class 8 {

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1public class 4 {2 public static void main(String[] args) {3 MemberModifier.field(4.class, "a").set(null, "Hello");4 }5}6public class 5 {7 public static void main(String[] args) {8 MemberModifier.method(5.class, "a").invoke(null);9 }10 private static void a() {11 System.out.println("Hello");12 }13}14public class 6 {15 public static void main(String[] args) {16 MemberModifier.constructor(6.class).invoke();17 }18}19public class 7 {20 public static void main(String[] args) {21 MemberModifier.constructor(7.class).withParameterTypes(int.class, String.class).invoke(1, "Hello");22 }23}24public class 8 {25 public static void main(String[] args) {26 MemberModifier.constructor(8.class).withArguments(1, "Hello").invoke();27 }28}29public class 9 {30 public static void main(String[] args) {31 MemberModifier.constructor(9.class).withNoArguments().invoke();32 }33}

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1package org.powermock.api.support.membermodification;2import org.powermock.api.support.membermodification.MemberModifier;3import org.powermock.api.support.membermodification.MemberMatcher;4import java.lang.reflect.Method;5import java.lang.reflect.Field;6import java.lang.reflect.InvocationTargetException;7public class MemberMatcherExample {8 public static void main(String[] args) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {9 MemberMatcherExample memberMatcherExample = new MemberMatcherExample();10 Method method = MemberMatcher.method(MemberMatcherExample.class, "methodToBeMocked", String.class);11 MemberModifier.suppress(method);12 memberMatcherExample.methodToBeMocked("hello");13 }14 public void methodToBeMocked(String param) {15 System.out.println("methodToBeMocked called with param: " + param);16 }17}18package org.powermock.api.support.membermodification;19import org.powermock.api.support.membermodification.MemberModifier;20import org.powermock.api.support.membermodification.MemberMatcher;21import java.lang.reflect.Method;22import java.lang.reflect.Field;23import java.lang.reflect.InvocationTargetException;24public class MemberMatcherExample {25 public static void main(String[] args) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {26 MemberMatcherExample memberMatcherExample = new MemberMatcherExample();27 Method method = MemberMatcher.method(MemberMatcherExample.class, "methodToBeMocked", String.class);28 MemberModifier.suppress(method);29 memberMatcherExample.methodToBeMocked("hello");30 }31 public void methodToBeMocked(String param) {32 System.out.println("methodToBeMocked called with param: " + param);33 }34}

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