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How to use suppress method of org.powermock.api.support.membermodification.MemberModifier class

Best Powermock code snippet using org.powermock.api.support.membermodification.MemberModifier.suppress

Source:MemberModificationExampleTest.java

...14 * See the License for the specific language governing permissions and15 * limitations under the License.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);96        final SuppressMethod tested = new SuppressMethod();97        assertEquals(expectedReturnValue, tested.getObject());98        assertEquals(expectedReturnValue, tested.getObject());99    }100    @Test101    public void duckTypeStaticMethodExample() throws Exception {102        replace(method(SuppressMethod.class, "getObjectStatic")).with(103                method(StaticAndInstanceDemo.class, "getStaticMessage"));104        assertEquals(SuppressMethod.getObjectStatic(), StaticAndInstanceDemo.getStaticMessage());105    }106    @Test107    public void whenReplacingMethodWithAMethodOfIncorrectReturnTypeThenAnIAEIsThrown() throws Exception {108        try {109            replace(method(SuppressMethod.class, "getObjectStatic")).with(110                    method(StaticAndInstanceDemo.class, "aVoidMethod"));111            fail("Should thow IAE");112        } catch (Exception e) {113            assertEquals("The replacing method (public static void samples.staticandinstance.StaticAndInstanceDemo.aVoidMethod()) needs to return java.lang.Object and not void.", e.getMessage());114        }115    }116    @Test117    public void whenReplacingMethodWithAMethodOfWithIncorrectParametersThenAnIAEIsThrown() throws Exception {118        try {119            replace(method(SuppressMethod.class, "getObjectStatic")).with(120                    method(StaticAndInstanceDemo.class, "aMethod2"));121            fail("Should thow IAE");122        } catch (Exception e) {123            assertEquals("The replacing method, \"public static java.lang.Object samples.staticandinstance.StaticAndInstanceDemo.aMethod2(java.lang.String)\", needs to have the same number of parameters of the same type as as method \"public static java.lang.Object samples.suppressmethod.SuppressMethod.getObjectStatic()\".", e.getMessage());124        }125    }126    @Test127    public void changingReturnValueExample() throws Exception {128        replace(method(SuppressMethod.class, "getObjectWithArgument")).with(new ReturnValueChangingInvocationHandler());129        final SuppressMethod tested = new SuppressMethod();130        assertThat(tested.getObjectWithArgument("don't do anything"), is(instanceOf(Object.class)));131        assertEquals("hello world", tested.getObjectWithArgument("make it a string"));132    }133    @Test134    public void suppressAllConstructors() throws Exception {135        suppress(constructorsDeclaredIn(SuppressEverything.class));136        SuppressEverything suppressEverything = new SuppressEverything();137        new SuppressEverything("test");138        try {139            suppressEverything.something();140            fail("Should throw ISE");141        } catch (IllegalStateException e) {142            assertEquals("error", e.getMessage());143        }144    }145    @Test146    public void suppressEverythingExample() throws Exception {147        suppress(everythingDeclaredIn(SuppressEverything.class));148        SuppressEverything suppressEverything = new SuppressEverything();149        new SuppressEverything("test");150        suppressEverything.something();151        suppressEverything.somethingElse();152    }153    private final class ReturnValueChangingInvocationHandler implements InvocationHandler {154        @Override155        public Object invoke(Object object, Method method, Object[] arguments) throws Throwable {156            if (arguments[0].equals("make it a string")) {157                return "hello world";158            } else {159                return method.invoke(object, arguments);160            }161        }162    }163}...

Source:PowerMockMemberModifierSupport.java

...29 * class.30 * <p>31 * {@link org.powermock.api.support.membermodification.MemberModifier MemberModifier} contains 32 * various utilities for modifying members of classes such as constructors, fields and methods. 33 * Modifying means e.g. changing return value of method invocations or suppressing a constructor.34 */35abstract class PowerMockMemberModifierSupport extends PowerMockMemberMatcherSupport {36    /**37     * Suppress a specific method. This works on both instance methods and38     * static methods.39     */40    protected final void suppress(Method method) {41        MemberModifier.suppress(method);42    }43    /**44     * Suppress multiple methods. This works on both instance methods and static45     * methods.46     */47    protected final void suppress(Method[] methods) {48        MemberModifier.suppress(methods);49    }50    /**51     * Suppress a constructor.52     */53    protected final void suppress(Constructor<?> constructor) {54        MemberModifier.suppress(constructor);55    }56    /**57     * Suppress multiple constructors.58     */59    protected final void suppress(Constructor<?>[] constructors) {60        MemberModifier.suppress(constructors);61    }62    /**63     * Suppress a field.64     */65    protected final void suppress(Field field) {66        MemberModifier.suppress(field);67    }68    /**69     * Suppress multiple fields.70     */71    protected final void suppress(Field[] fields) {72        MemberModifier.suppress(fields);73    }74    /**75     * Suppress an array of accessible objects.76     */77    protected final void suppress(AccessibleObject[] accessibleObjects) {78        MemberModifier.suppress(accessibleObjects);79    }80    /**81     * Add a method that should be intercepted and return another value (i.e.82     * the method is stubbed).83     */84    protected final <T> MethodStubStrategy<T> stub(Method method) {85        return MemberModifier.stub(method);86    }87    /**88     * Replace a method invocation.89     */90    protected final MethodReplaceStrategy replace(Method method) {91        return MemberModifier.replace(method);92    }...

Source:MyClass2Test.java

...7import static org.powermock.api.support.membermodification.MemberMatcher.constructor;8import static org.powermock.api.support.membermodification.MemberMatcher.constructorsDeclaredIn;9import static org.powermock.api.support.membermodification.MemberMatcher.everythingDeclaredIn;10import static org.powermock.api.support.membermodification.MemberMatcher.methodsDeclaredIn;11import static org.powermock.api.support.membermodification.MemberModifier.suppress;12@PrepareForTest(MyClass2.class)13@RunWith(PowerMockRunner.class)14public class MyClass2Test {15    @Test16    public void testSupressingConstructorMethod() throws Exception {17        suppress(constructor(MyClass2.class));18        assertNull(new MyClass2().getStr());19    }20    @Test21    public void testSupressingAllConstructorMethod() throws Exception {22        suppress(constructorsDeclaredIn(MyClass2.class));23        assertNull(new MyClass2("test").getStr());24    }25    @Test26    public void testSupressingAllMethods() throws Exception {27        suppress(methodsDeclaredIn(MyClass2.class));28        assertNull(new MyClass2("test").getStr());29    }30    @Test31    public void testSupressingEntireClass() throws Exception {32        suppress(everythingDeclaredIn(MyClass2.class));33        assertNull(new MyClass2("test").getStr());34    }35}...

suppress

Using AI Code Generation

1package org.powermock.examples.tutorial.membermodification;2import org.powermock.api.support.membermodification.MemberModifier;3import org.powermock.core.classloader.annotations.PrepareForTest;4import org.powermock.modules.junit4.PowerMockRunner;5import org.powermock.examples.tutorial.membermodification.suppress.*;6import org.junit.Test;7import org.junit.runner.RunWith;8import static org.junit.Assert.assertEquals;9import static org.powermock.api.support.membermodification.MemberMatcher.method;10import static org.powermock.api.support.membermodification.MemberModifier.suppress;11@RunWith(PowerMockRunner.class)12@PrepareForTest( { SuppressMethod.class })13public class SuppressMethodTest {14	public void testSuppressMethod() throws Exception {15		SuppressMethod suppressMethod = new SuppressMethod();16		suppress(method(SuppressMethod.class, "methodToSuppress"));17		String result = suppressMethod.callMethodToSuppress();18		assertEquals("methodToSuppress was not suppressed", "methodToSuppress was not called", result);19	}20}21package org.powermock.examples.tutorial.membermodification;22import org.powermock.api.support.membermodification.MemberModifier;23import org.powermock.core.classloader.annotations.PrepareForTest;24import org.powermock.modules.junit4.PowerMockRunner;25import org.powermock.examples.tutorial.membermodification.suppress.*;26import org.junit.Test;27import org.junit.runner.RunWith;28import static org.junit.Assert.assertEquals;29import static org.powermock.api.support.membermodification.MemberMatcher.method;30import static org.powermock.api.support.membermodification.MemberModifier.suppress;31@RunWith(PowerMockRunner.class)32@PrepareForTest( { SuppressMethod.class })33public class SuppressMethodTest {34	public void testSuppressMethod() throws Exception {35		SuppressMethod suppressMethod = new SuppressMethod();36		suppress(method(SuppressMethod.class, "methodToSuppress"));37		String result = suppressMethod.callMethodToSuppress();38		assertEquals("methodToSuppress was not suppressed", "methodToSuppress was not called", result);39	}40}41package org.powermock.examples.tutorial.membermodification;42import org.powermock.api.support.membermodification.MemberModifier;43import org.powermock.core.classloader.annotations.PrepareForTest;44import org.powermock.modules.junit4.PowerMockRunner;45import org.powermock.examples

suppress

Using AI Code Generation

1package com.powermock;2import static org.powermock.api.support.membermodification.MemberModifier.suppress;3import java.util.ArrayList;4import java.util.List;5import org.junit.Assert;6import org.junit.Test;7import org.junit.runner.RunWith;8import org.powermock.core.classloader.annotations.PowerMockIgnore;9import org.powermock.modules.junit4.PowerMockRunner;10import com.powermock.Employee;11@RunWith(PowerMockRunner.class)12@PowerMockIgnore("javax.management.*")13public class PowerMockExample {14	public void testSuppressMethod() throws Exception {15		Employee employee = new Employee();16		suppress(MemberMatcher.method(Employee.class, "getEmployeeName"));17		Assert.assertEquals("Employee", employee.getEmployeeName());18	}19}20package com.powermock;21import static org.powermock.api.mockito.PowerMockito.verifyNew;22import java.util.ArrayList;23import java.util.List;24import org.junit.Test;25import org.junit.runner.RunWith;26import org.powermock.core.classloader.annotations.PowerMockIgnore;27import org.powermock.modules.junit4.PowerMockRunner;28import org.powermock.reflect.Whitebox;29import com.powermock.Employee;30@RunWith(PowerMockRunner.class)31@PowerMockIgnore("javax.management.*")32public class PowerMockExample {33	public void testVerifyNewMethod() throws Exception {34		Employee employee = new Employee();35		Whitebox.invokeMethod(employee, "setEmployeeName", "Employee");36		verifyNew(Employee.class).withArguments("Employee");37	}38}39package com.powermock;40import static org.powermock.api.mockito.PowerMockito.whenNew;41import java.util.ArrayList;42import java.util.List;43import org.junit.Assert;44import org.junit.Test;45import org.junit.runner.RunWith;46import org.powermock.core.classloader.annotations.PowerMockIgnore;47import org.powermock.modules.junit4.PowerMockRunner;48import org.powermock.reflect.Whitebox;49import com.powermock.Employee;50@RunWith(PowerMockRunner.class)51@PowerMockIgnore("javax.management.*")52public class PowerMockExample {53	public void testWhenNewMethod() throws Exception {54		Employee employee = new Employee();55		whenNew(Employee.class).withArguments("Employee").thenReturn(employee);56		Employee employee1 = Whitebox.invokeMethod(employee, "getEmployee

suppress

Using AI Code Generation

1import org.powermock.api.support.membermodification.MemberModifier;2import org.powermock.reflect.Whitebox;3import org.powermock.reflect.internal.WhiteboxImpl;4import java.lang.reflect.Field;5import java.lang.reflect.Method;6import java.lang.reflect.Modifier;7import java.lang.reflect.InvocationTargetException;8import java.lang.reflect.Constructor;9import java.lang.reflect.Array;10import java.lang.reflect.Proxy;11import java.lang.reflect.InvocationHandler;12import java.lang.reflect.Type;13import java.lang.reflect.TypeVariable;14import java.lang.reflect.GenericArrayType;15import java.lang.reflect.ParameterizedType;16import java.lang.reflect.WildcardType;17import java.lang.reflect.UndeclaredThrowableException;18import java.lang.reflect.Constructor;19import java.lang.reflect.Method;20import java.lang.reflect.Field;21import java.lang.reflect.Array;22import java.lang.reflect.InvocationTargetException;23import java.lang.reflect.Modifier;24import java.lang.reflect.Proxy;25import java.lang.reflect.Type;26import java.lang.reflect.TypeVariable;27import java.lang.reflect.GenericArrayType;28import java.lang.reflect.ParameterizedType;29import java.lang.reflect.WildcardType;30import java.lang.reflect.UndeclaredThrowableException;31import java.lang.reflect.InvocationHandler;32import java.lang.reflect.Constructor;33import java.lang.reflect.Method;34import java.lang.reflect.Field;35import java.lang.reflect.Array;36import java.lang.reflect.InvocationTargetException;37import java.lang.reflect.Modifier;38import java.lang.reflect.Proxy;39import java.lang.reflect.Type;40import java.lang.reflect.TypeVariable;41import java.lang.reflect.GenericArrayType;42import java.lang.reflect.ParameterizedType;43import java.lang.reflect.WildcardType;44import java.lang.reflect.UndeclaredThrowableException;45import java.lang.reflect.InvocationHandler;46import java.lang.reflect.Constructor;47import java.lang.reflect.Method;48import java.lang.reflect.Field;49import java.lang.reflect.Array;50import java.lang.reflect.InvocationTargetException;51import java.lang.reflect.Modifier;52import java.lang.reflect.Proxy;53import java.lang.reflect.Type;54import java.lang.reflect.TypeVariable;55import java.lang.reflect.GenericArrayType;56import java.lang.reflect.ParameterizedType;57import java.lang.reflect.WildcardType;58import java.lang.reflect.UndeclaredThrowableException;59import java.lang.reflect.InvocationHandler;60import java.lang.reflect.Constructor;61import java.lang.reflect.Method;62import java.lang.reflect.Field;63import java.lang.reflect.Array;64import java.lang.reflect.InvocationTargetException;65import java.lang.reflect.Modifier;66import java.lang.reflect.Proxy;67import java.lang.reflect.Type;68import java.lang.reflect.TypeVariable;69import java.lang.reflect.GenericArrayType

suppress

Using AI Code Generation

1package com.powermock;2import java.lang.reflect.Method;3import org.powermock.api.support.membermodification.MemberModifier;4public class 4 {5    public static void main(String[] args) throws Exception {6        Class<?> c = Class.forName("com.powermock.Foo");7        Method method = c.getDeclaredMethod("bar");8        MemberModifier.suppress(method);9        Foo foo = new Foo();10        foo.bar();11    }12}13package com.powermock;14public class Foo {15    public void bar() {16        System.out.println("Hello World");17    }18}

suppress

Using AI Code Generation

1package com.coderbd;2import org.powermock.api.support.membermodification.MemberModifier;3import org.powermock.core.classloader.annotations.PrepareForTest;4@PrepareForTest({MemberModifierExample.class})5public class MemberModifierExample {6    public static boolean isStaticMethodCalled = false;7    public String nonStaticMethod() {8        return "nonStaticMethod";9    }10    public static String staticMethod() {11        isStaticMethodCalled = true;12        return "staticMethod";13    }14    public static void main(String[] args) throws Exception {15        MemberModifierExample example = new MemberModifierExample();16        MemberModifier.suppress(MemberModifier.method(MemberModifierExample.class, "staticMethod"));17        System.out.println(example.nonStaticMethod());18        System.out.println(MemberModifierExample.staticMethod());19        System.out.println(isStaticMethodCalled);20    }21}22package com.coderbd;23import org.powermock.api.support.membermodification.MemberModifier;24import org.powermock.core.classloader.annotations.PrepareForTest;25@PrepareForTest({MemberModifierExample.class})26public class MemberModifierExample {27    public static boolean isStaticMethodCalled = false;28    public String nonStaticMethod() {29        return "nonStaticMethod";30    }31    public static String staticMethod() {32        isStaticMethodCalled = true;33        return "staticMethod";34    }35    public static void main(String[] args) throws Exception {36        MemberModifierExample example = new MemberModifierExample();37        MemberModifier.suppress(MemberModifier.method(MemberModifierExample.class, "staticMethod"));38        System.out.println(example.nonStaticMethod());39        System.out.println(MemberModifierExample.staticMethod());40        System.out.println(isStaticMethodCalled);41    }42}43package com.coderbd;44import org.powermock.api.support.membermodification.MemberModifier;45import org.powermock.core.classloader.annotations.PrepareForTest;46@PrepareForTest({MemberModifierExample.class})47public class MemberModifierExample {48    public static boolean isStaticMethodCalled = false;49    public String nonStaticMethod() {50        return "nonStaticMethod";51    }52    public static String staticMethod() {53        isStaticMethodCalled = true;54        return "staticMethod";55    }

suppress

Using AI Code Generation

1package com.powermock;2import java.lang.reflect.Field;3import org.powermock.api.support.membermodification.MemberModifier;4public class 4 {5    public static void main(String[] args) throws Exception {6        Class<?> c = Class.forName("com.powermock.Class4");7        Field f = c.getDeclaredField("a");8        MemberModifier.suppress(f);9        System.out.println(f.getInt(null));10    }11}12package com.powermock;13public class Class4 {14    public static int a = 10;15}16The suppress() method is

suppress

Using AI Code Generation

1import java.util.ArrayList;2import java.util.List;3import org.powermock.api.support.membermodification.MemberModifier;4public class TestClass {5public static void main(String[] args) {6List<String> list = new ArrayList<String>();7list.add("a");8list.add("b");9list.add("c");10list.add("d");11System.out.println("List before suppressing: " + list);12MemberModifier.suppress(MemberMatcher.method(ArrayList.class, "clear"));13list.clear();14System.out.println("List after suppressing: " + list);15}16}17import java.util.ArrayList;18import java.util.List;19import org.powermock.api.support.membermodification.MemberModifier;20public class TestClass {21public static void main(String[] args) {22List<String> list = new ArrayList<String>();23list.add("a");24list.add("b");25list.add("c");26list.add("d");27System.out.println("List before suppressing: " + list);28MemberModifier.suppress(MemberMatcher.method(ArrayList.class, "clear"));29list.clear();30System.out.println("List after suppressing: " + list);31}32}33import java.util.ArrayList;34import java.util.List;35import org.powermock.api.support.membermodification.MemberModifier;36public class TestClass {37public static void main(String[] args) {38List<String> list = new ArrayList<String>();39list.add("a");40list.add("b");41list.add("c");42list.add("d");43System.out.println("List before suppressing: " + list);44MemberModifier.suppress(MemberMatcher.method(ArrayList.class, "clear"));45list.clear();46System.out.println("List after suppressing: " + list);47}48}49import java.util.ArrayList;50import java.util.List;51import org.powermock.api.support.membermodification.MemberModifier;

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