TestMu Conference is Back! Future of Testing + AI LambdaTest G2 Announcement

How to use modifyMethod method of org.powermock.core.transformers.javassist.MethodMockTransformer class

Best Powermock code snippet using org.powermock.core.transformers.javassist.MethodMockTransformer.modifyMethod

Source:MethodMockTransformer.java

...35        super(strategy);36        this.mockGetawayClass = MockGateway.class;37    }38    39    void modifyMethod(final CtMethod method) throws NotFoundException, CannotCompileException {40        41        if (!shouldSkipMethod(method)) {42            43            // Lookup the method return type44            45            final CtClass returnTypeAsCtClass = method.getReturnType();46            final String returnTypeAsString = getReturnTypeAsString(method);47            48            if (Modifier.isNative(method.getModifiers())) {49                modifyNativeMethod(method, returnTypeAsCtClass, returnTypeAsString);50            } else {51                modifyMethod(method, returnTypeAsCtClass, returnTypeAsString);52            }53        }54    }55    56    57    private void modifyNativeMethod(CtMethod method, CtClass returnTypeAsCtClass,58                                    String returnTypeAsString) throws CannotCompileException {59        String methodName = method.getName();60        String returnValue = "($r)value";61        62        if (returnTypeAsCtClass.equals(CtClass.voidType)) {63            returnValue = VOID;64        }65        66        String classOrInstance = classOrInstance(method);67        method.setModifiers(method.getModifiers() - Modifier.NATIVE);68        String code = "Object value = "69                          + mockGetawayClass.getName()70                          + ".methodCall("71                          + classOrInstance72                          + ", \""73                          + method.getName()74                          + "\", $args, $sig, \""75                          + returnTypeAsString76                          + "\");"77                          + "if (value != "78                          + MockGateway.class.getName() + ".PROCEED) "79                          + "return "80                          + returnValue + "; "81                          + "throw new java.lang.UnsupportedOperationException(\"" + methodName + " is native\");";82        method.setBody("{" + code + "}");83    }84    85    private String classOrInstance(CtMethod method) {86        String classOrInstance = "this";87        if (Modifier.isStatic(method.getModifiers())) {88            classOrInstance = "$class";89        }90        return classOrInstance;91    }92    93    private void modifyMethod(CtMethod method, CtClass returnTypeAsCtClass,94                              String returnTypeAsString) throws CannotCompileException {95        final String returnValue = getCorrectReturnValueType(returnTypeAsCtClass);96        97        String classOrInstance = classOrInstance(method);98        99        String code = "Object value = "100                          + mockGetawayClass.getName()101                          + ".methodCall("102                          + classOrInstance + ", \""103                          + method.getName()104                          + "\", $args, $sig, \""105                          + returnTypeAsString106                          + "\");"107                          + "if (value != " + MockGateway.class.getName() + ".PROCEED) " + "return "...

Source:StaticFinalNativeMethodMockTransformer.java

...29    30    @Override31    public CtClass transform(final CtClass clazz) throws NotFoundException, CannotCompileException {32            for (CtMethod m : clazz.getDeclaredMethods()) {33                modifyMethod(m);34            }35        return clazz;36    }37}...

modifyMethod

Using AI Code Generation

1import org.powermock.core.transformers.javassist.MethodMockTransformer;2import javassist.CtClass;3import javassist.CtMethod;4{5    public static void main(String[] args) throws Exception6    {7        CtClass ctClass = null;8        CtMethod ctMethod = null;9        MethodMockTransformer methodMockTransformer = new MethodMockTransformer();10        methodMockTransformer.modifyMethod(ctClass, ctMethod);11    }12}13    at org.powermock.core.transformers.javassist.MethodMockTransformer.modifyMethod(MethodMockTransformer.java:68)14    at 4.main(4.java:13)

modifyMethod

Using AI Code Generation

1MethodMockTransformer transformer = new MethodMockTransformer();2transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });3MethodMockTransformer transformer = new MethodMockTransformer();4transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });5MethodMockTransformer transformer = new MethodMockTransformer();6transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });7MethodMockTransformer transformer = new MethodMockTransformer();8transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });9MethodMockTransformer transformer = new MethodMockTransformer();10transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });11MethodMockTransformer transformer = new MethodMockTransformer();12transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });13MethodMockTransformer transformer = new MethodMockTransformer();14transformer.modifyMethod(classPool, ctClass, method, new Class<?>[] { String.class }, new Object[] { "mocked" });

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.