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How to use createAndPopulateVarArgsArray method of org.powermock.reflect.internal.WhiteboxImpl class

Best Powermock code snippet using org.powermock.reflect.internal.WhiteboxImpl.createAndPopulateVarArgsArray

Source:WhiteboxImpl.java

...1049			if (constructor.isVarArgs()) {1050				Class<?>[] parameterTypes = constructor.getParameterTypes();1051				final int varArgsIndex = parameterTypes.length - 1;1052				Class<?> varArgsType = parameterTypes[varArgsIndex].getComponentType();1053				Object varArgsArrayInstance = createAndPopulateVarArgsArray(varArgsType, varArgsIndex, arguments);1054				Object[] completeArgumentList = new Object[parameterTypes.length];1055				for (int i = 0; i < varArgsIndex; i++) {1056					completeArgumentList[i] = arguments[i];1057				}1058				completeArgumentList[completeArgumentList.length - 1] = varArgsArrayInstance;1059				createdObject = constructor.newInstance(completeArgumentList);1060			} else {1061				createdObject = constructor.newInstance(arguments);1062			}1063		} catch (InvocationTargetException e) {1064			Throwable cause = e.getCause();1065			if (cause instanceof Exception) {1066				throw (Exception) cause;1067			} else if (cause instanceof Error) {1068				throw (Error) cause;1069			}1070		}1071		return createdObject;1072	}1073	private static Object createAndPopulateVarArgsArray(Class<?> varArgsType, int varArgsStartPosition, Object... arguments) {1074		Object arrayInstance = Array.newInstance(varArgsType, arguments.length - varArgsStartPosition);1075		for (int i = varArgsStartPosition; i < arguments.length; i++) {1076			Array.set(arrayInstance, i - varArgsStartPosition, arguments[i]);1077		}1078		return arrayInstance;1079	}1080	/**1081	 * Get all methods in a class hierarchy! Both declared an non-declared (no1082	 * duplicates).1083	 * 1084	 * @param clazz1085	 *            The class whose methods to get.1086	 * @return All methods declared in this class hierarchy.1087	 */1088	public static Method[] getAllMethods(Class<?> clazz) {1089		if (clazz == null) {1090			throw new IllegalArgumentException("You must specify a class in order to get the methods.");1091		}1092		Set<Method> methods = new LinkedHashSet<Method>();1093		Class<?> thisType = clazz;1094		while (thisType != null) {1095			final Class<?> type = thisType;1096			final Method[] declaredMethods = AccessController.doPrivileged(new PrivilegedAction<Method[]>() {1097				public Method[] run() {1098					return type.getDeclaredMethods();1099				}1100			});1101			for (Method method : declaredMethods) {1102				method.setAccessible(true);1103				methods.add(method);1104			}1105			thisType = thisType.getSuperclass();1106		}1107		return methods.toArray(new Method[0]);1108	}1109	/**1110	 * Get all public methods for a class (no duplicates)! Note that the1111	 * class-hierarchy will not be traversed.1112	 * 1113	 * @param clazz1114	 *            The class whose methods to get.1115	 * @return All public methods declared in <tt>this</tt> class.1116	 */1117	private static Method[] getAllPublicMethods(Class<?> clazz) {1118		if (clazz == null) {1119			throw new IllegalArgumentException("You must specify a class in order to get the methods.");1120		}1121		Set<Method> methods = new LinkedHashSet<Method>();1122		for (Method method : clazz.getMethods()) {1123			method.setAccessible(true);1124			methods.add(method);1125		}1126		return methods.toArray(new Method[0]);1127	}1128	/**1129	 * Get all fields in a class hierarchy! Both declared an non-declared (no1130	 * duplicates).1131	 * 1132	 * @param clazz1133	 *            The class whose fields to get.1134	 * @return All fields declared in this class hierarchy.1135	 */1136	public static Field[] getAllFields(Class<?> clazz) {1137		if (clazz == null) {1138			throw new IllegalArgumentException("You must specify the class that contains the fields");1139		}1140		Set<Field> fields = new LinkedHashSet<Field>();1141		Class<?> thisType = clazz;1142		while (thisType != null) {1143			final Field[] declaredFields = thisType.getDeclaredFields();1144			for (Field field : declaredFields) {1145				field.setAccessible(true);1146				fields.add(field);1147			}1148			thisType = thisType.getSuperclass();1149		}1150		return fields.toArray(new Field[fields.size()]);1151	}1152	/**1153	 * Get the first parent constructor defined in a super class of1154	 * <code>klass</code>.1155	 * 1156	 * @param klass1157	 *            The class where the constructor is located. <code>null</code>1158	 *            ).1159	 * @return A <code>java.lang.reflect.Constructor</code>.1160	 */1161	public static Constructor<?> getFirstParentConstructor(Class<?> klass) {1162		try {1163			return getUnmockedType(klass).getSuperclass().getDeclaredConstructors()[0];1164		} catch (Exception e) {1165			throw new ConstructorNotFoundException("Failed to lookup constructor.", e);1166		}1167	}1168	/**1169	 * Finds and returns a method based on the input parameters. If no1170	 * <code>parameterTypes</code> are present the method will return the first1171	 * method with name <code>methodNameToMock</code>. If no method was found,1172	 * <code>null</code> will be returned. If no <code>methodName</code> is1173	 * specified the method will be found based on the parameter types. If1174	 * neither method name nor parameters are specified an1175	 * {@link IllegalArgumentException} will be thrown.1176	 * 1177	 * @param <T>1178	 * @param type1179	 * @param methodName1180	 * @param parameterTypes1181	 * @return1182	 */1183	public static <T> Method findMethod(Class<T> type, String methodName, Class<?>... parameterTypes) {1184		if (methodName == null && parameterTypes == null) {1185			throw new IllegalArgumentException("You must specify a method name or parameter types.");1186		}1187		List<Method> matchingMethodsList = new LinkedList<Method>();1188		for (Method method : getAllMethods(type)) {1189			if (methodName == null || method.getName().equals(methodName)) {1190				if (parameterTypes != null && parameterTypes.length > 0) {1191					// If argument types was supplied, make sure that they1192					// match.1193					Class<?>[] paramTypes = method.getParameterTypes();1194					if (!checkIfTypesAreSame(parameterTypes, paramTypes)) {1195						continue;1196					}1197				}1198				// Add the method to the matching methods list.1199				matchingMethodsList.add(method);1200			}1201		}1202		Method methodToMock = null;1203		if (matchingMethodsList.size() > 0) {1204			if (matchingMethodsList.size() == 1) {1205				// We've found a unique method match.1206				methodToMock = matchingMethodsList.get(0);1207			} else if (parameterTypes.length == 0) {1208				/*1209				 * If we've found several matches and we've supplied no1210				 * parameter types, go through the list of found methods and see1211				 * if we have a method with no parameters. In that case return1212				 * that method.1213				 */1214				for (Method method : matchingMethodsList) {1215					if (method.getParameterTypes().length == 0) {1216						methodToMock = method;1217						break;1218					}1219				}1220				if (methodToMock == null) {1221					WhiteboxImpl.throwExceptionWhenMultipleMethodMatchesFound("argument parameter types", matchingMethodsList.toArray(new Method[0]));1222				}1223			} else {1224				// We've found several matching methods.1225				WhiteboxImpl.throwExceptionWhenMultipleMethodMatchesFound("argument parameter types", matchingMethodsList.toArray(new Method[0]));1226			}1227		}1228		return methodToMock;1229	}1230	public static boolean isProxy(Class<?> type) {1231		return proxyFramework.isProxy(type);1232	}1233	public static <T> Class<?> getUnmockedType(Class<T> type) {1234		if (type == null) {1235			throw new IllegalArgumentException("type cannot be null");1236		}1237		Class<?> unmockedType = null;1238		if (proxyFramework != null && proxyFramework.isProxy(type)) {1239			unmockedType = proxyFramework.getUnproxiedType(type);1240		} else if (Proxy.isProxyClass(type)) {1241			unmockedType = type.getInterfaces()[0];1242		} else {1243			unmockedType = type;1244		}1245		return unmockedType;1246	}1247	static void throwExceptionWhenMultipleMethodMatchesFound(String helpInfo, Method[] methods) {1248		if (methods == null || methods.length < 2) {1249			throw new IllegalArgumentException("Internal error: throwExceptionWhenMultipleMethodMatchesFound needs at least two methods.");1250		}1251		StringBuilder sb = new StringBuilder();1252		sb.append("Several matching methods found, please specify the ");1253		sb.append(helpInfo);1254		sb.append(" so that PowerMock can determine which method you're refering to.\n");1255		sb.append("Matching methods in class ").append(methods[0].getDeclaringClass().getName()).append(" were:\n");1256		for (Method method : methods) {1257			sb.append(method.getReturnType().getName()).append(" ");1258			sb.append(method.getName()).append("( ");1259			final Class<?>[] parameterTypes = method.getParameterTypes();1260			for (Class<?> paramType : parameterTypes) {1261				sb.append(paramType.getName()).append(".class ");1262			}1263			sb.append(")\n");1264		}1265		throw new TooManyMethodsFoundException(sb.toString());1266	}1267	static void throwExceptionWhenMultipleConstructorMatchesFound(Constructor<?>[] constructors) {1268		if (constructors == null || constructors.length < 2) {1269			throw new IllegalArgumentException("Internal error: throwExceptionWhenMultipleConstructorMatchesFound needs at least two constructors.");1270		}1271		StringBuilder sb = new StringBuilder();1272		sb1273				.append("Several matching constructors found, please specify the argument parameter types so that PowerMock can determine which method you're refering to.\n");1274		sb.append("Matching constructors in class ").append(constructors[0].getDeclaringClass().getName()).append(" were:\n");1275		for (Constructor<?> constructor : constructors) {1276			sb.append(constructor.getName()).append("( ");1277			final Class<?>[] parameterTypes = constructor.getParameterTypes();1278			for (Class<?> paramType : parameterTypes) {1279				sb.append(paramType.getName()).append(".class ");1280			}1281			sb.append(")\n");1282		}1283		throw new TooManyConstructorsFoundException(sb.toString());1284	}1285	@SuppressWarnings("all")1286	public static Method findMethodOrThrowException(Class<?> type, String methodName, Class<?>... parameterTypes) {1287		Method methodToMock = findMethod(type, methodName, parameterTypes);1288		throwExceptionIfMethodWasNotFound(type, methodName, methodToMock, parameterTypes);1289		return methodToMock;1290	}1291	/**1292	 * Get an array of {@link Method}'s that matches the supplied list of method1293	 * names. Both instance and static methods are taken into account.1294	 * 1295	 * @param clazz1296	 *            The class that should contain the methods.1297	 * @param methodNames1298	 *            Names of the methods that will be returned.1299	 * @return An array of Method's. May be of length 0 but not1300	 *         <code>null</code>.1301	 * @throws MethodNotFoundException1302	 *             If no method was found.1303	 */1304	public static Method[] getMethods(Class<?> clazz, String... methodNames) {1305		if (methodNames == null || methodNames.length == 0) {1306			throw new IllegalArgumentException("You must supply at least one method name.");1307		}1308		final List<Method> methodsToMock = new LinkedList<Method>();1309		Method[] allMethods = null;1310		if (clazz.isInterface()) {1311			allMethods = getAllPublicMethods(clazz);1312		} else {1313			allMethods = getAllMethods(clazz);1314		}1315		for (Method method : allMethods) {1316			for (String methodName : methodNames) {1317				if (method.getName().equals(methodName)) {1318					method.setAccessible(true);1319					methodsToMock.add(method);1320				}1321			}1322		}1323		final Method[] methodArray = methodsToMock.toArray(new Method[0]);1324		if (methodArray.length == 0) {1325			throw new MethodNotFoundException(String.format("No methods matching the name(s) %s were found in the class hierarchy of %s.",1326					concatenateStrings(methodNames), getType(clazz)));1327		}1328		return methodArray;1329	}1330	/**1331	 * Get an array of {@link Field}'s that matches the supplied list of field1332	 * names. Both instance and static fields are taken into account.1333	 * 1334	 * @param clazz1335	 *            The class that should contain the fields.1336	 * @param fieldNames1337	 *            Names of the fields that will be returned.1338	 * @return An array of Field's. May be of length 0 but not <code>null</code>1339	 *         .1340	 */1341	public static Field[] getFields(Class<?> clazz, String... fieldNames) {1342		final List<Field> fields = new LinkedList<Field>();1343		for (Field field : getAllFields(clazz)) {1344			for (String fieldName : fieldNames) {1345				if (field.getName().equals(fieldName)) {1346					fields.add(field);1347				}1348			}1349		}1350		final Field[] fieldArray = fields.toArray(new Field[fields.size()]);1351		if (fieldArray.length == 0) {1352			throw new FieldNotFoundException(String.format("No fields matching the name(s) %s were found in the class hierarchy of %s.",1353					concatenateStrings(fieldNames), getType(clazz)));1354		}1355		return fieldArray;1356	}1357	@SuppressWarnings("unchecked")1358	public static <T> T performMethodInvocation(Object tested, Method methodToInvoke, Object... arguments) throws Exception {1359		final boolean accessible = methodToInvoke.isAccessible();1360		if (!accessible) {1361			methodToInvoke.setAccessible(true);1362		}1363		try {1364			if (isPotentialVarArgsMethod(methodToInvoke, arguments)) {1365				Class<?>[] parameterTypes = methodToInvoke.getParameterTypes();1366				final int varArgsIndex = parameterTypes.length - 1;1367				Class<?> varArgsType = parameterTypes[varArgsIndex].getComponentType();1368				Object varArgsArrayInstance = createAndPopulateVarArgsArray(varArgsType, varArgsIndex, arguments);1369				Object[] completeArgumentList = new Object[parameterTypes.length];1370				for (int i = 0; i < varArgsIndex; i++) {1371					completeArgumentList[i] = arguments[i];1372				}1373				completeArgumentList[completeArgumentList.length - 1] = varArgsArrayInstance;1374				return (T) methodToInvoke.invoke(tested, completeArgumentList);1375			} else {1376				return (T) methodToInvoke.invoke(tested, arguments == null ? new Object[] { arguments } : arguments);1377			}1378		} catch (InvocationTargetException e) {1379			Throwable cause = e.getCause();1380			if (cause instanceof Exception) {1381				throw (Exception) cause;1382			} else if (cause instanceof Error) {...

createAndPopulateVarArgsArray

Using AI Code Generation

1    String[] varArgsArray = WhiteboxImpl.createAndPopulateVarArgsArray(String.class, new String[] { "a", "b", "c" });2    assertThat(varArgsArray).containsExactly("a", "b", "c");3}4> {code}5> 	at org.powermock.reflect.internal.WhiteboxImpl.createAndPopulateVarArgsArray(WhiteboxImpl.java:140)6> 	at org.powermock.reflect.internal.WhiteboxImpl.createAndPopulateVarArgsArray(WhiteboxImpl.java:123)7> 	at org.powermock.reflect.internal.WhiteboxImpl.invokeMethod(WhiteboxImpl.java:101)8> 	at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:400)9> 	at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:389)10> 	at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:383)11> 	at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:375)12> 	at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:367)

createAndPopulateVarArgsArray

Using AI Code Generation

1Object[] args = new Object[] { "a", "b", "c" };2Object[] varArgs = WhiteboxImpl.createAndPopulateVarArgsArray(args, String[].class);3String result = Whitebox.invokeMethod(obj, "method", varArgs);4Object[] args = new Object[] { "a", "b", "c" };5Object[] varArgs = WhiteboxImpl.createAndPopulateVarArgsArray(args, String[].class);6String result = Whitebox.invokeMethod(obj, "method", varArgs);7Object[] args = new Object[] { "a", "b", "c" };8Object[] varArgs = WhiteboxImpl.createAndPopulateVarArgsArray(args, String[].class);9String result = Whitebox.invokeMethod(obj, "method", varArgs);10Object[] args = new Object[] { "a", "b", "c" };11Object[] varArgs = WhiteboxImpl.createAndPopulateVarArgsArray(args

createAndPopulateVarArgsArray

Using AI Code Generation

1java.lang.NoSuchMethodError: org.powermock.reflect.internal.WhiteboxImpl.createAndPopulateVarArgsArray(Ljava/lang/Class;[Ljava/lang/Object;)Ljava/lang/Object;2at org.powermock.reflect.WhiteboxImpl.createAndPopulateVarArgsArray(WhiteboxImpl.java:168)3at org.powermock.reflect.Whitebox.createAndPopulateVarArgsArray(Whitebox.java:304)4at com.example.ClassUnderTestTest.testMethod(ClassUnderTestTest.java:81)5at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)6at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)7at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)8at java.lang.reflect.Method.invoke(Method.java:606)9at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)10at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)11at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)12at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)13at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:313)14at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)15at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)16at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:302)17at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:291)18at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit47

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