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How to use MockClassLoaderBuilder class of org.powermock.core.classloader package

Best Powermock code snippet using org.powermock.core.classloader.MockClassLoaderBuilder

...24import java.util.ArrayList;25import java.util.List;26import static org.powermock.core.transformers.support.FilterPredicates.isInstanceOf;27import static org.powermock.utils.Asserts.internalAssertNotNull;28public class MockClassLoaderBuilder {29    private final MockTransformerChainFactory transformerChainFactory;30    private final List<MockTransformer> extraMockTransformers;31    private final ByteCodeFramework byteCodeFramework;32    private String[] packagesToIgnore;33    private String[] classesToModify;34    35    public static MockClassLoaderBuilder create(ByteCodeFramework byteCodeFramework) {36        return new MockClassLoaderBuilder(byteCodeFramework);37    }38    39    private UseClassPathAdjuster useClassPathAdjuster;40    private Class<?> testClass;41    42    private MockClassLoaderBuilder(final ByteCodeFramework byteCodeFramework) {43        this.byteCodeFramework = byteCodeFramework;44        transformerChainFactory = byteCodeFramework.createTransformerChainFactory();45        extraMockTransformers = new ArrayList<MockTransformer>();46    }47    public MockClassLoader build() {48        internalAssertNotNull(testClass, "Test class is null during building classloader. ");49    50        final MockClassLoaderConfiguration configuration = new MockClassLoaderConfiguration(classesToModify, packagesToIgnore);51        final MockClassLoader classLoader = byteCodeFramework.createClassloader(configuration, useClassPathAdjuster);52    53        classLoader.setMockTransformerChain(createTransformerChain());54        return classLoader;55    }56    57    private MockTransformerChain createTransformerChain() {58        final MockTransformerChain mockTransformerChain = transformerChainFactory.createDefaultChain(extraMockTransformers);59        60        final Iterable<MockTransformer> testAwareTransformer = mockTransformerChain.filter(isInstanceOf(TestClassAwareTransformer.class));61        for (MockTransformer transformer : testAwareTransformer) {62            ((TestClassAwareTransformer) transformer).setTestClass(testClass);63        }64        65        return mockTransformerChain;66    }67    68    public MockClassLoaderBuilder addIgnorePackage(String[] packagesToIgnore) {69        this.packagesToIgnore = ArrayUtil.addAll(this.packagesToIgnore, packagesToIgnore);70        return this;71    }72    public MockClassLoaderBuilder addClassesToModify(String[] classesToModify) {73        this.classesToModify = ArrayUtil.addAll(this.classesToModify, classesToModify);74        return this;75    }76    77    public MockClassLoaderBuilder addExtraMockTransformers(MockTransformer... mockTransformers) {78        if (mockTransformers != null) {79            for (MockTransformer mockTransformer : mockTransformers) {80                if (mockTransformer != null) {81                    extraMockTransformers.add(mockTransformer);82                }83            }84        }85        return this;86    }87    88    public MockClassLoaderBuilder addClassPathAdjuster(final UseClassPathAdjuster useClassPathAdjuster) {89        this.useClassPathAdjuster = useClassPathAdjuster;90        return this;91    }92    93    public MockClassLoaderBuilder forTestClass(final Class<?> testClass) {94        this.testClass = testClass;95        return this;96    }97}

Source: MockClassLoaderBuilderTest.java

...6import org.powermock.core.classloader.javassist.JavassistMockClassLoader;7import org.powermock.core.transformers.ClassWrapper;8import org.powermock.core.transformers.MockTransformer;9import org.powermock.core.transformers.TestClassAwareTransformer;10public class MockClassLoaderBuilderTest {11    @Test12    public void should_create_instance_of_MockClassLoader_depends_on_provided_bytecode_framework() {13        MockClassLoader classLoader = MockClassLoaderBuilder.create(Javassist).forTestClass(getClass()).build();14        assertThat(classLoader).isExactlyInstanceOf(JavassistMockClassLoader.class);15    }16    @Test17    public void should_create_transformer_chain_depends_on_provided_bytecode_framework() {18        MockClassLoader classLoader = MockClassLoaderBuilder.create(Javassist).forTestClass(getClass()).build();19        assertThatJavassistMockTransformerChainCreated(classLoader);20    }21    @Test22    public void should_set_test_class_to_TestClassAwareTransformers() {23        final MockClassLoaderBuilderTest.SpyMockTransformer extraMockTransformer = new MockClassLoaderBuilderTest.SpyMockTransformer();24        MockClassLoaderBuilder.create(Javassist).forTestClass(MockClassLoaderBuilderTest.class).addExtraMockTransformers(extraMockTransformer).build();25        assertThat(extraMockTransformer.testClass).as("Test class is set ").isEqualTo(MockClassLoaderBuilderTest.class);26    }27    @Test28    public void should_throw_internal_exception_if_test_class_is_null() {29        assertThatThrownBy(new ThrowingCallable() {30            @Override31            public void call() {32                MockClassLoaderBuilder.create(Javassist).build();33            }34        }).as("Internal exception has been thrown.").isExactlyInstanceOf(PowerMockInternalException.class);35    }36    private static class SpyMockTransformer<T> implements MockTransformer<T> , TestClassAwareTransformer {37        private Class<?> testClass;38        @Override39        public ClassWrapper<T> transform(final ClassWrapper<T> clazz) {40            return null;41        }42        @Override43        public void setTestClass(final Class<?> testClass) {44            this.testClass = testClass;45        }46    }...

MockClassLoaderBuilder

Using AI Code Generation

1import org.powermock.core.classloader.MockClassLoaderBuilder;2import org.powermock.core.classloader.MockClassLoaderBuilder;3import org.powermock.core.classloader.MockClassLoaderBuilder;4import java.lang.reflect.Method;5import java.net.URL;6import java.net.URLClassLoader;7import java.util.ArrayList;8import java.util.List;9import static org.junit.Assert.assertEquals;10import static org.junit.Assert.assertTrue;11public class PowerMockClassLoaderTest {12    private static final String CLASS_TO_LOAD = "org.powermock.core.classloader.MockClassLoaderBuilder";13    public void testMockClassLoaderBuilder() throws Exception {14        final ClassLoader classLoader = MockClassLoaderBuilder.createMockClassLoaderBuilder()15                .withClass(CLASS_TO_LOAD)16                .build();17        assertTrue(classLoader instanceof URLClassLoader);18        final URLClassLoader urlClassLoader = (URLClassLoader) classLoader;19        final URL[] urls = urlClassLoader.getURLs();20        assertEquals(1, urls.length);21        final URL url = urls[0];22        assertTrue(url.toString().endsWith("powermock-core-1.5.1.jar"));23        final Class<?> clazz = classLoader.loadClass(CLASS_TO_LOAD);24        final Method method = clazz.getMethod("getClasses");25        final Object result = method.invoke(null);26        assertTrue(result instanceof List);27        final List<?> classes = (List<?>) result;28        assertEquals(1, classes.size());29        assertEquals(CLASS_TO_LOAD, classes.get(0));30    }31    public void testMockClassLoaderBuilderWithClasses() throws Exception {32        final ClassLoader classLoader = MockClassLoaderBuilder.createMockClassLoaderBuilder()33                .withClasses(MockClassLoaderBuilder.class, ArrayList.class)34                .build();35        assertTrue(classLoader instanceof URLClassLoader);36        final URLClassLoader urlClassLoader = (URLClassLoader) classLoader;37        final URL[] urls = urlClassLoader.getURLs();38        assertEquals(1, urls.length);39        final URL url = urls[0];40        assertTrue(url.toString().endsWith("powermock-core-1.5.1.jar"));41        final Class<?> clazz = classLoader.loadClass(CLASS_TO_LOAD);42        final Method method = clazz.getMethod("getClasses");43        final Object result = method.invoke(null);44        assertTrue(result instanceof List);45        final List<?> classes = (List<?>) result;46        assertEquals(2, classes

MockClassLoaderBuilder

Using AI Code Generation

1public class MockClassLoaderBuilderTest {2    public void testMockClassLoaderBuilder() {3        ClassLoader classLoader = new MockClassLoaderBuilder()4                .mockClass("java.lang.String")5                .mockClass("java.lang.Object")6                .mockClass("java.lang.Integer")7                .mockClass("java.lang.Boolean")8                .mockClass("java.lang.Double")9                .mockClass("java.lang.Float")10                .mockClass("java.lang.Long")11                .mockClass("java.lang.Short")12                .mockClass("java.lang.Character")13                .mockClass("java.lang.Byte")14                .mockClass("java.lang.Void")15                .mockClass("java.lang.Number")16                .mockClass("java.lang.Throwable")17                .mockClass("java.lang.Exception")18                .mockClass("java.lang.RuntimeException")19                .mockClass("java.lang.Error")20                .mockClass("java.lang.Class")21                .mockClass("java.lang.System")22                .mockClass("java.lang.Math")23                .mockClass("java.lang.Thread")24                .mockClass("java.lang.ThreadGroup")25                .mockClass("java.lang.StackTraceElement")26                .mockClass("java.lang.ClassLoader")27                .mockClass("java.lang.Package")28                .mockClass("java.lang.reflect.Method")29                .mockClass("java.lang.reflect.Constructor")30                .mockClass("java.lang.reflect.Field")31                .mockClass("java.lang.reflect.Modifier")32                .mockClass("java.lang.reflect.Array")33                .mockClass("java.lang.reflect.Proxy")34                .mockClass("java.lang.reflect.InvocationHandler")35                .mockClass("java.lang.reflect.InvocationTargetException")36                .mockClass("java.lang.reflect.AccessibleObject")37                .mockClass("java.lang.reflect.AnnotatedElement")38                .mockClass("java.lang.reflect.GenericDeclaration")39                .mockClass("java.lang.reflect.Type")40                .mockClass("java.lang.reflect.ParameterizedType")41                .mockClass("java.lang.reflect.TypeVariable")42                .mockClass("java.lang.reflect.WildcardType")43                .mockClass("java.lang.reflect.GenericArrayType")44                .mockClass("java.lang.reflect.UndeclaredThrowableException")45                .mockClass("java.lang.reflect.MalformedParameterizedTypeException")46                .mockClass("java.lang.reflect.MalformedParametersException")47                .mockClass("java.lang.reflect.Executable")48                .mockClass("java.lang.reflect.Parameter")

MockClassLoaderBuilder

Using AI Code Generation

1public class 4 {2    public static void main(String[] args) throws Exception {3        ClassLoader classLoader = new MockClassLoaderBuilder().createMockClassLoader();4        Class<?> clazz = Class.forName("com.test.TestClass", true, classLoader);5        Object object = clazz.newInstance();6        Method method = clazz.getMethod("test");7        method.invoke(object);8    }9}10public class 5 {11    public static void main(String[] args) throws Exception {12        ClassLoader classLoader = new MockClassLoaderBuilder().createMockClassLoader();13        Class<?> clazz = Class.forName("com.test.TestClass", true, classLoader);14        Object object = clazz.newInstance();15        Method method = clazz.getMethod("test");16        method.invoke(object);17    }18}19public class 6 {20    public static void main(String[] args) throws Exception {21        ClassLoader classLoader = new MockClassLoaderBuilder().createMockClassLoader();22        Class<?> clazz = Class.forName("com.test.TestClass", true, classLoader);23        Object object = clazz.newInstance();24        Method method = clazz.getMethod("test");25        method.invoke(object);26    }27}28public class 7 {29    public static void main(String[] args) throws Exception {30        ClassLoader classLoader = new MockClassLoaderBuilder().createMockClassLoader();31        Class<?> clazz = Class.forName("com.test.TestClass", true, classLoader);32        Object object = clazz.newInstance();33        Method method = clazz.getMethod("test");34        method.invoke(object);35    }36}37public class 8 {38    public static void main(String[] args) throws Exception {39        ClassLoader classLoader = new MockClassLoaderBuilder().createMockClassLoader();40        Class<?> clazz = Class.forName("com.test.TestClass", true, classLoader);41        Object object = clazz.newInstance();42        Method method = clazz.getMethod("test");43        method.invoke(object);44    }45}

MockClassLoaderBuilder

Using AI Code Generation

1import org.junit.jupiter.api.Test;2import org.junit.jupiter.api.extension.ExtendWith;3import org.mockito.Mock;4import org.mockito.junit.jupiter.MockitoExtension;5import org.powermock.api.mockito.PowerMockito;6import org.powermock.core.classloader.annotations.PrepareForTest;7import org.powermock.reflect.Whitebox;8import static org.junit.jupiter.api.Assertions.*;9import static org.mockito.Mockito.*;10import java.util.ArrayList;11import java.util.List;12@ExtendWith(MockitoExtension.class)13@PrepareForTest(BookingService.class)14class Test13 {15    PaymentService paymentServiceMock;16    void should_CountAvailablePlaces_When_Called() throws Exception {17        BookingService bookingService = new BookingService(paymentServiceMock);18        List<Booking> bookings = new ArrayList<>();19        bookings.add(new Booking(1, 2, 2));20        bookings.add(new Booking(2, 4, 2));21        bookings.add(new Booking(3, 2, 4));22        BookingDAO bookingDAOMock = mock(BookingDAO.class);23        when(bookingDAOMock.getBookings()).thenReturn(bookings);24        PowerMockito.whenNew(BookingDAO.class).withAnyArguments().thenReturn(bookingDAOMock);25        int actual = bookingService.getAvailablePlaceCount();26        assertEquals(10, actual);27    }28}

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