Discover AI-native insights at Testμ Conference‘25

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

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

...57    }58    @Test59    public void prepareForTestHasPrecedenceOverPowerMockIgnoreAnnotatedPackages() throws Exception {60        MockClassLoader mockClassLoader = new MockClassLoader(new String[] { "org.mytest.myclass" });61        Whitebox.setInternalState(mockClassLoader, new String[] { "*mytest*" }, DeferSupportingClassLoader.class);62        assertTrue(Whitebox.<Boolean>invokeMethod(mockClassLoader, "shouldModify", "org.mytest.myclass"));63    }64    @Test65    public void powerMockIgnoreAnnotatedPackagesAreIgnored() throws Exception {66        MockClassLoader mockClassLoader = new MockClassLoader(new String[] { "org.ikk.Jux" });67        Whitebox.setInternalState(mockClassLoader, new String[] { "*mytest*" }, DeferSupportingClassLoader.class);68        assertFalse(Whitebox.<Boolean> invokeMethod(mockClassLoader, "shouldModify", "org.mytest.myclass"));69    }70    @Test71    public void powerMockIgnoreAnnotatedPackagesHavePrecedenceOverPrepareEverythingForTest() throws Exception {72        MockClassLoader mockClassLoader = new MockClassLoader(new String[] { MODIFY_ALL_CLASSES });73        Whitebox.setInternalState(mockClassLoader, new String[] { "*mytest*" }, DeferSupportingClassLoader.class);74        assertFalse(Whitebox.<Boolean> invokeMethod(mockClassLoader, "shouldModify", "org.mytest.myclass"));75    }76    @Test77    public void prepareForTestPackagesArePrepared() throws Exception {78        MockClassLoader mockClassLoader = new MockClassLoader(new String[] { "*mytest*" });79        assertTrue(Whitebox.<Boolean> invokeMethod(mockClassLoader, "shouldModify", "org.mytest.myclass"));80    }81    @Test82    public void shouldAddIgnorePackagesToDefer() throws Exception {83        MockClassLoader mockClassLoader = new MockClassLoader(new String[0]);84        mockClassLoader.addIgnorePackage("test*");85        String[] deferPackages = Whitebox.<String[]> getInternalState(mockClassLoader, "deferPackages");86        assertTrue(deferPackages.length > 1);87        assertEquals("test*", deferPackages[deferPackages.length - 1]);...

Source: DeferSupportingClassLoader.java

...22 * 23 * @author Johan Haleby24 * @author Jan Kronquist25 */26public abstract class DeferSupportingClassLoader extends ClassLoader {27    private Map<String, Class<?>> classes;28    String deferPackages[];29    ClassLoader deferTo;30    public void addIgnorePackage(String... packagesToIgnore) {31        if (packagesToIgnore != null && packagesToIgnore.length > 0) {32            final int previousLength = deferPackages.length;33            deferPackages = new String[previousLength + packagesToIgnore.length];34            System.arraycopy(packagesToIgnore, 0, deferPackages, previousLength, packagesToIgnore.length);35        }36    }37    public DeferSupportingClassLoader(ClassLoader classloader, String deferPackages[]) {38        if (classloader == null) {39            deferTo = ClassLoader.getSystemClassLoader();40        } else {41            deferTo = classloader;42        }43        classes = new HashMap<String, Class<?>>();44        this.deferPackages = deferPackages;45    }46    protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {47        Class<?> clazz = null;48        if ((clazz = (Class<?>) classes.get(name)) == null) {49            final boolean shouldDefer = shouldDefer(deferPackages, name);50            if (shouldDefer) {51                clazz = deferTo.loadClass(name);...

DeferSupportingClassLoader

Using AI Code Generation

1package com.powermock;2import java.io.File;3import java.io.IOException;4import org.powermock.core.classloader.DeferSupportingClassLoader;5import org.powermock.core.classloader.MockClassLoader;6import org.powermock.core.classloader.MockClassLoaderBuilder;7public class DeferSupportingClassLoaderTest {8public static void main(String[] args) throws IOException, ClassNotFoundException {9MockClassLoaderBuilder builder = new MockClassLoaderBuilder();10builder.addFullyQualifiedNamesOfClassesToLoadByMockClassloader("com.powermock.ClassToBeMocked");11builder.addFullyQualifiedNamesOfClassesToLoadByMockClassloader("com.powermock.ClassToBeMocked1");12builder.addFullyQualifiedNamesOfClassesToLoadByMockClassloader("com.powermock.ClassToBeMocked2");13MockClassLoader mockClassLoader = builder.build();14DeferSupportingClassLoader deferSupportingClassLoader = new DeferSupportingClassLoader(mockClassLoader);15Class<?> clazz = deferSupportingClassLoader.loadClass("com.powermock.ClassToBeMocked");16System.out.println(clazz.getName());17clazz = deferSupportingClassLoader.loadClass("com.powermock.ClassToBeMocked1");18System.out.println(clazz.getName());19clazz = deferSupportingClassLoader.loadClass("com.powermock.ClassToBeMocked2");20System.out.println(clazz.getName());21}22}23Class<?> clazz = deferSupportingClassLoader.loadClass("com.powermock.ClassToBeMocked");24Class<?> clazz = deferSupportingClassLoader.loadClass("com.powermock.ClassToBeMocked", new File("C:\25ewfolder"));

DeferSupportingClassLoader

Using AI Code Generation

1import java.lang.reflect.Method;2import java.util.Arrays;3import org.powermock.core.classloader.DeferSupportingClassLoader;4public class 4 {5    public static void main(String[] args) throws Exception {6        ClassLoader parent = 4.class.getClassLoader();7        DeferSupportingClassLoader classLoader = new DeferSupportingClassLoader(parent);8        Class<?> clazz = classLoader.loadClass("com.example.ClassToLoad");9        Method method = clazz.getMethod("methodToLoad", String[].class);10        String[] strings = (String[]) method.invoke(null, (Object) new String[] { "a", "b", "c" });11        System.out.println(Arrays.toString(strings));12    }13}14package com.example;15public class ClassToLoad {16    public static String[] methodToLoad(String[] strings) {17        return strings;18    }19}20package com.example;21public class ClassToLoad2 {22    public static String[] methodToLoad2(String[] strings) {23        return strings;24    }25}26package com.example;27public class ClassToLoad3 {28    public static String[] methodToLoad3(String[] strings) {29        return strings;30    }31}32package com.example;33public class ClassToLoad4 {34    public static String[] methodToLoad4(String[] strings) {35        return strings;36    }37}38DeferSupportingClassLoader classLoader = new DeferSupportingClassLoader(parent, "com.example");

DeferSupportingClassLoader

Using AI Code Generation

1package com.powermock;2import java.io.IOException;3import java.io.InputStream;4import org.powermock.core.classloader.DeferSupportingClassLoader;5public class DeferSupportingClassLoaderTest {6	public static void main(String[] args) throws IOException {7		DeferSupportingClassLoaderTest test = new DeferSupportingClassLoaderTest();8		test.testDeferSupportingClassLoader();9	}10	public void testDeferSupportingClassLoader() throws IOException {11		DeferSupportingClassLoader deferSupportingClassLoader = new DeferSupportingClassLoader(12				getClass().getClassLoader());13				.getResourceAsStream("com/powermock/4.class");14		int read = is.read();15		while (read != -1) {16			System.out.print((char) read);17			read = is.read();18		}19	}20}21package com.powermock;22public class DeferSupportingClassLoaderTest {23	public static void main(String[] args) {24		DeferSupportingClassLoaderTest test = new DeferSupportingClassLoaderTest();25		test.testDeferSupportingClassLoader();26	}27	public void testDeferSupportingClassLoader() {28		DeferSupportingClassLoader deferSupportingClassLoader = new DeferSupportingClassLoader(29				getClass().getClassLoader());30				.getResourceAsStream("com/powermock/4.class");31		int read = is.read();32		while (read != -1) {33			System.out.print((char) read);34			read = is.read();35		}36	}37}

DeferSupportingClassLoader

Using AI Code Generation

1package com.journaldev;2import org.powermock.core.classloader.DeferSupportingClassLoader;3import java.io.IOException;4import java.net.URL;5import java.util.Enumeration;6public class DeferSupportingClassLoaderExample {7    public static void main(String[] args) throws IOException {8        DeferSupportingClassLoader loader = new DeferSupportingClassLoader();9        loader.addDeferPackage("java");10        loader.addDeferPackage("javax");11        loader.addDeferPackage("sun");12        loader.addDeferPackage("org.powermock");13        Enumeration<URL> resources = loader.getResources("java/lang/String.class");14        while (resources.hasMoreElements()) {15            System.out.println(resources.nextElement());16        }17    }18}

Blogs

Check out the latest blogs from LambdaTest on this topic:

Scala Testing: A Comprehensive Guide

Before we discuss Scala testing, let us understand the fundamentals of Scala and how this programming language is a preferred choice for your development requirements.The popularity and usage of Scala are rapidly rising, evident by the ever-increasing open positions for Scala developers.

How To Handle Dynamic Dropdowns In Selenium WebDriver With Java

Joseph, who has been working as a Quality Engineer, was assigned to perform web automation for the company’s website.

How To Choose The Best JavaScript Unit Testing Frameworks

JavaScript is one of the most widely used programming languages. This popularity invites a lot of JavaScript development and testing frameworks to ease the process of working with it. As a result, numerous JavaScript testing frameworks can be used to perform unit testing.

Stop Losing Money. Invest in Software Testing

I was once asked at a testing summit, “How do you manage a QA team using scrum?” After some consideration, I realized it would make a good article, so here I am. Understand that the idea behind developing software in a scrum environment is for development teams to self-organize.

Different Ways To Style CSS Box Shadow Effects

Have you ever visited a website that only has plain text and images? Most probably, no. It’s because such websites do not exist now. But there was a time when websites only had plain text and images with almost no styling. For the longest time, websites did not focus on user experience. For instance, this is how eBay’s homepage looked in 1999.

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.