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Diffstat (limited to 'src/com/google/testing/littlemock/LittleMock.java')
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diff --git a/src/com/google/testing/littlemock/LittleMock.java b/src/com/google/testing/littlemock/LittleMock.java deleted file mode 100644 index 140f853..0000000 --- a/src/com/google/testing/littlemock/LittleMock.java +++ /dev/null @@ -1,1346 +0,0 @@ -/* - * Copyright 2011 Google Inc. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.google.testing.littlemock; - -import java.io.File; -import java.io.ObjectInputStream; -import java.io.ObjectStreamClass; -import java.lang.reflect.Field; -import java.lang.reflect.InvocationHandler; -import java.lang.reflect.Method; -import java.lang.reflect.Proxy; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.HashMap; -import java.util.List; -import java.util.Map; -import java.util.concurrent.Callable; -import java.util.concurrent.CopyOnWriteArrayList; -import java.util.concurrent.atomic.AtomicLong; -import java.util.concurrent.atomic.AtomicReference; - -/** - * Very lightweight and simple mocking framework, inspired by Mockito, http://mockito.org. - * - * <p>It supports only a <b>small subset</b> of the APIs provided by Mockito and other mocking - * frameworks. - * - * <p>This project was originally designed to be lightweight and suitable for platforms that don't - * support dynamic class generation, for example Android. Since the release of the open - * source dexmaker project http://code.google.com/p/dexmaker/ we can now mock concrete classes - * too. - * - * <p>Here is an example of how to use the framework. - * - * <p>Suppose that we have this interface: - * <pre> - * public interface Foo { - * public String aString(int input); - * public void doSomething(); - * } - * </pre> - * - * <p>Then stubbing out mocks works as follows: - * <pre> - * Foo mockFoo = mock(Foo.class); // Create the mock. - * doReturn("hello").when(mockFoo).aString(anyInt()); // Stub the mock to return "hello". - * doThrow(new IOException("oh noes")).when(mockFoo).doSomething(); - * assertEquals("hello", mockFoo.aString(5)); // Use the mock - performs as expected. - * mockFoo.doSomething(); // This will throw an IOException. - * </pre> - * - * <p>You can verify in the 'natural place', after the method call has happened, like this: - * <pre> - * Foo mockFoo = mock(Foo.class); - * assertEquals(null, mockFoo.aString(6)); // Unstubbed method calls return a sensible default. - * verify(mockFoo).aString(6); // This will pass, aString() was called once. - * verify(mockFoo, never()).doSomething(); // This will pass, doSomething was never called. - * verify(mockFoo, times(3)).aString(anyInt()); // This will fail, was called once only. - * </pre> - * - * <p>The documentation is still incomplete. You can look at the {@link LittleMockTest} class and - * its unit tests - since they tell you exactly what operations are supported and how to use them. - * - * <p>The reasons I much prefer Mockito's approach to the one of EasyMock are as follows: - * <ul> - * <li>No need to remember to put your mocks in replay mode.</li> - * <li>No need to remember to call verify, a dangerous source of false-positive tests or - * alternatively over-specified tests.</li> - * <li>Much less over-specification: only verify what you actually care about.</li> - * <li>Which in turn leads to better separated tests, each test verifying only a part of the - * desired behaviour.</li> - * <li>Which also leads to less fragile tests, where adding another method call on your - * dependencies doesn't break unrelated tests.</li> - * <li>Simpler sharing of common setup method with specific tests overridding individual - * behavious however they want to, only the most recent stubbed call is the one that counts.</li> - * <li>More natural order for tests: set up stubs, execute tests, verify that it worked.</li> - * <li>More unified syntax that doesn't require special case for differences between void method - * calls and method calls that return a value.</li> - * </ul> - * - * <p>There were enough reasons that I wanted to give Mockito a try. It didn't work on Android - * because of issues with class generation. So I looked at the documentation and examples page and - * added tests for all the examples, and then implemented the this framework. I should stress that - * this is a clean-room implementation, and as such it's possible that there are a couple of methods - * that don't work in the same way as Mockito's implementation. Where that is the case I think we - * should fix once we discover them. There is also some functionality missing, but it will be added - * in due course. - * - * <p>Over time, the API has diverged slightly from the one of Mockito, as I have added APIs that I - * found convenient but that did not have an equivalent in Mockite itself. For anything that has an - * equivalent in Mockito I tried to keep the same name and syntax, to make it easier to transition - * between using one framework to using the other, e.g., when developing both an Android application - * using this framework and a desktop application using Mockito. - * - * @author hugohudson@gmail.com (Hugo Hudson) - */ -/*@NotThreadSafe*/ -public class LittleMock { - /** Generates a {@link Behaviour} suitable for void methods. */ - public static Behaviour doNothing() { return doReturn(null); } - - /** Generates a {@link Behaviour} that returns the given result. */ - public static <T> Behaviour doReturn(final T result) { - return new BehaviourImpl(new Action() { - @Override public T doAction(Method method, Object[] args) { return result; } - @Override public Class<?> getReturnType() { - return (result == null) ? null : result.getClass(); - } - }); - } - - /** - * Gets a {@link Behaviour} that will execute the given {@link Callable} and return its result. - */ - public static <T> Behaviour doAnswer(final Callable<T> callable) { - return new BehaviourImpl(new Action() { - @Override - public T doAction(Method method, Object[] args) throws Throwable { return callable.call(); } - @Override - public Class<?> getReturnType() { return null; } - }); - } - - /** Returns a {@link Behaviour} that throws the given {@link Throwable}. */ - public static <T extends Throwable> Behaviour doThrow(final T exception) { - return new BehaviourImpl(new Action() { - @Override - public Object doAction(Method method, Object[] args) throws Throwable { throw exception; } - @Override - public Class<?> getReturnType() { return null; } - }); - } - - /** Begins a verification step on a mock: the next method invocation on that mock will verify. */ - public static <T> T verify(T mock, CallCount howManyTimes) { - return verify(mock, howManyTimes, null); - } - - private static final class OrderChecker { - private MethodCall mLastCall; - - public void checkOrder(List<MethodCall> calls, String fieldName) { - MethodCall lastTrial = null; - for (MethodCall trial : calls) { - if (mLastCall == null || mLastCall.mInvocationOrder < trial.mInvocationOrder) { - mLastCall = trial; - return; - } - lastTrial = trial; - } - fail(formatFailedVerifyOrderMessage(mLastCall, lastTrial, fieldName)); - } - - private String formatFailedVerifyOrderMessage(MethodCall lastCall, MethodCall thisCall, - String fieldName) { - StringBuffer sb = new StringBuffer(); - sb.append("\nCall to:"); - appendDebugStringForMethodCall(sb, thisCall.mMethod, thisCall.mElement, fieldName, false); - sb.append("\nShould have happened after:"); - appendDebugStringForMethodCall(sb, lastCall.mMethod, lastCall.mElement, fieldName, false); - sb.append("\nBut the calls happened in the wrong order"); - sb.append("\n"); - return sb.toString(); - } - } - - private static <T> T verify(T mock, CallCount howManyTimes, OrderChecker orderCounter) { - if (howManyTimes == null) { - throw new IllegalArgumentException("Can't pass null for howManyTimes parameter"); - } - DefaultInvocationHandler handler = getHandlerFrom(mock); - checkState(handler.mHowManyTimes == null, "Unfinished verify() statements"); - checkState(handler.mOrderCounter == null, "Unfinished verify() statements"); - checkState(handler.mStubbingAction == null, "Unfinished stubbing statements"); - checkNoMatchers(); - handler.mHowManyTimes = howManyTimes; - handler.mOrderCounter = orderCounter; - sUnfinishedCallCounts.add(howManyTimes); - return handler.<T>getVerifyingMock(); - } - - /** The list of outstanding calls to verify() that haven't finished, used to check for errors. */ - private static List<CallCount> sUnfinishedCallCounts = new ArrayList<CallCount>(); - - /** The list of outstanding calls to when() that haven't finished, used to check for errors. */ - private static List<Action> sUnfinishedStubbingActions = new ArrayList<Action>(); - - /** Begins a verification step for exactly one method call. */ - public static <T> T verify(T mock) { return verify(mock, times(1)); } - - /** Assert that no method calls at all happened on these mocks. */ - public static void verifyZeroInteractions(Object... mocks) { - checkNoMatchers(); - for (Object mock : mocks) { - List<MethodCall> mMethodCalls = getHandlerFrom(mock).mRecordedCalls; - expect(mMethodCalls.isEmpty(), "Mock expected zero interactions, had " + mMethodCalls); - } - } - - /** Assert that there are no unverified method calls on these mocks. */ - public static void verifyNoMoreInteractions(Object... mocks) { - StackTraceElement callSite = new Exception().getStackTrace()[1]; - for (Object mock : mocks) { - verifyNoMoreInteractions(mock, callSite); - } - } - - /** Check that there are no unverified actions on the given mock. */ - private static void verifyNoMoreInteractions(Object mock, StackTraceElement callSite) { - checkNoMatchers(); - DefaultInvocationHandler handlerFrom = getHandlerFrom(mock); - List<MethodCall> unverifiedCalls = new ArrayList<MethodCall>(); - for (MethodCall method : handlerFrom.mRecordedCalls) { - if (!method.mWasVerified) { - unverifiedCalls.add(method); - } - } - if (unverifiedCalls.size() > 0) { - StringBuffer sb = new StringBuffer(); - sb.append("\nWe found these unverified calls:"); - for (MethodCall method : unverifiedCalls) { - appendDebugStringForMethodCall(sb, method.mMethod, - method.mElement, handlerFrom.mFieldName, false); - } - sb.append("\n\nAfter final interaction was verified:\n"); - sb.append(" at ").append(callSite).append("\n"); - throw new AssertionError(sb.toString()); - } - } - - /** Creates a {@link CallCount} that matches exactly the given number of calls. */ - public static CallCount times(long n) { return new CallCount(n, n); } - - /** Claims that the verified call must happen before the given timeout. */ - public static Timeout timeout(long timeoutMillis) { - return new Timeout(1, 1, timeoutMillis); - } - -/** Creates a {@link CallCount} that only matches if the method was never called. */ - public static CallCount never() { return new CallCount(0, 0); } - - /** Creates a {@link CallCount} that matches at least one method call. */ - public static CallCount atLeastOnce() { return new CallCount(1, Long.MAX_VALUE); } - - /** Creates a {@link CallCount} that matches any number of method calls, including none at all. */ - public static CallCount anyTimes() { return new CallCount(0, Long.MAX_VALUE); } - - /** Creates a {@link CallCount} that matches at least the given number of calls. */ - public static CallCount atLeast(long n) { return new CallCount(n, Long.MAX_VALUE); } - - /** Creates a {@link CallCount} that matches up to the given number of calls but no more. */ - public static CallCount atMost(long n) { return new CallCount(0, n); } - - /** Creates a {@link CallCount} that matches any number of calls between the two given bounds. */ - public static CallCount between(long lower, long upper) { return new CallCount(lower, upper); } - - /** - * Creates an argument matcher that matches any object, don't use for primitives. - * <p> - * <b>Note</b>: This does not enforce that the object is of type {@code T}; use - * {@link #isA(Class)} to do that. - */ - public static <T> T anyObject() { return LittleMock.<T>addMatcher(new MatchAnything(), null); } - - /** Generates an argument matcher that matches any string. */ - public static String anyString() { return isA(String.class); } - - /** Generates an argument matcher that matches any int. */ - public static int anyInt() { return addMatcher(new MatchAnything(), 0); } - - /** Generates an argument matcher that matches any float. */ - public static float anyFloat() { return addMatcher(new MatchAnything(), 0f); } - - /** Generates an argument matcher that matches any double. */ - public static double anyDouble() { return addMatcher(new MatchAnything(), 0.0); } - - /** Generates an argument matcher that matches any boolean. */ - public static boolean anyBoolean() { return addMatcher(new MatchAnything(), false); } - - /** Generates an argument matcher that matches any short. */ - public static short anyShort() { return addMatcher(new MatchAnything(), (short) 0); } - - /** Generates an argument matcher that matches any char. */ - public static char anyChar() { return addMatcher(new MatchAnything(), '\u0000'); } - - /** Generates an argument matcher that matches any long. */ - public static long anyLong() { return addMatcher(new MatchAnything(), 0L); } - - /** Generates an argument matcher that matches any byte. */ - public static byte anyByte() { return addMatcher(new MatchAnything(), (byte) 0); } - - /** Generates an argument matcher that matches exactly this value. */ - public static <T> T eq(final T expected) { - return addMatcher(new ArgumentMatcher() { - @Override - public boolean matches(Object value) { - return areEqual(expected, value); - } - }, expected); - } - - /** An argument matcher that matches any value of the given type or a subtype thereof. */ - public static <T> T isA(final Class<T> clazz) { - return LittleMock.<T>addMatcher(new ArgumentMatcher() { - @Override - public boolean matches(Object value) { - return value == null || clazz.isAssignableFrom(value.getClass()); - } - }, null); - } - - /** - * Injects fields annotated with {@link Mock} with a newly created mock, and those - * annotated with {@link Captor} with a suitable capture object. - * - * <p>This operation is recursive, and travels up the class hierarchy, in order to set all - * suitably annotated fields. - */ - public static void initMocks(Object instance) throws Exception { - injectMocksForClass(instance, instance.getClass()); - } - - /** Recurse up the class hierarchy injecting mocks as we go, stopping when we reach Object. */ - private static void injectMocksForClass(Object instance, Class<?> clazz) - throws Exception { - if (clazz.equals(Object.class)) { - return; - } - for (Field field : clazz.getDeclaredFields()) { - if (field.getAnnotation(Mock.class) != null) { - setField(field, instance, mock(field.getType(), field.getName())); - } else if (field.getAnnotation(Captor.class) != null) { - setField(field, instance, createCaptor()); - } - } - injectMocksForClass(instance, clazz.getSuperclass()); - } - - /** - * Creates a correctly typed {@link ArgumentCaptor} , it's easier to use - * {@link #initMocks(Object)}. - */ - public static <T> ArgumentCaptor<T> createCaptor() { - return new ArgumentCaptorImpl<T>(); - } - - /** - * Create a correctly typed ArgumentCaptor that also works for primitive types. - * For example, to capture an int, use - * <code>ArgumentCaptor<Integer> c = createCaptor(Integer.class);</code> - */ - public static <T> ArgumentCaptor<T> createCaptor(Class<T> clazz) { - return new ArgumentCaptorImpl<T>(clazz); - } - - /** Implementation of the {@link ArgumentCaptor} interface. */ - private static class ArgumentCaptorImpl<T extends Object> implements ArgumentCaptor<T> { - private final ArrayList<T> mAllValues = new ArrayList<T>(); - private T mValue; - private Class<T> mClass; - - private ArgumentCaptorImpl() { - mClass = null; - } - - private ArgumentCaptorImpl(Class<T> clazz) { - mClass = clazz; - } - - public void setValue(T value) { - mValue = value; - mAllValues.add(mValue); - } - - @Override - public T getValue() { - return mValue; - } - - @Override - public List<T> getAllValues() { - return mAllValues; - } - - @Override - public T capture() { - if (mClass != null) { - if (Integer.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Integer>addMatcher(this, 0); - } - if (Float.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Float>addMatcher(this, 0f); - } - if (Double.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Double>addMatcher(this, 0.0); - } - if (Boolean.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Boolean>addMatcher(this, false); - } - if (Short.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Short>addMatcher(this, (short) 0); - } - if (Character.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Character>addMatcher(this, '\u0000'); - } - if (Long.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Long>addMatcher(this, 0L); - } - if (Byte.class.isAssignableFrom(mClass)) { - return (T) LittleMock.<Byte>addMatcher(this, (byte) 0); - } - } - return LittleMock.<T>addMatcher(this, null); - } - - - @Override - public boolean matches(Object value) { - // A capture always matches any argument. - // This is so that verify(mMock).someMethod(capture(mCapture)) will match any and all calls - // to someMethod() and we will capture the values into mCapture. - return true; - } - } - - /** - * Creates a mock, more easily done via the {@link #initMocks(Object)} method. - * - * <p>Also if you use this method to create your mock, the field in the error messages will - * be named the same as your class passed in, you only get the actual field name if you - * use the annotation. - * - * @throws IllegalArgumentException if the class you pass in is null - */ - public static <T> T mock(Class<T> clazz) { - if (clazz == null) { - throw new IllegalArgumentException("Class to mock was null"); - } - return mock(clazz, getDefaultFieldNameFor(clazz)); - } - - /** Creates a mock, more easily done via the {@link #initMocks(Object)} method. */ - @SuppressWarnings("unchecked") - private static <T> T mock(Class<T> clazz, String fieldName) { - return (T) createProxy(clazz, new DefaultInvocationHandler(clazz, fieldName)); - } - - /** Pick a suitable name for a field of the given clazz. */ - private static String getDefaultFieldNameFor(Class<?> clazz) { - return clazz.getSimpleName().substring(0, 1).toLowerCase() - + clazz.getSimpleName().substring(1); - } - - /** Clears out the expectations on these mocks. */ - public static void reset(Object... mocks) { - for (Object mock : mocks) { - getHandlerFrom(mock).reset(); - } - } - - /** Use this in tear down to check for programming errors. */ - public static void checkForProgrammingErrorsDuringTearDown() { - checkNoMatchers(); - checkNoUnfinishedCalls(sUnfinishedCallCounts, "verify()"); - checkNoUnfinishedCalls(sUnfinishedStubbingActions, "stubbing"); - } - - /** Helper function to check that there are no verify or stubbing commands outstanding. */ - private static void checkNoUnfinishedCalls(List<?> list, String type) { - if (!list.isEmpty()) { - list.clear(); - throw new IllegalStateException("Unfinished " + type + " statements"); - } - } - - /** Implementation of {@link Behaviour}. */ - private static class BehaviourImpl implements Behaviour { - private final Action mAction; - - private BehaviourImpl(Action action) { - mAction = action; - } - - @Override - public <T> T when(T mock) { - DefaultInvocationHandler handler = getHandlerFrom(mock); - checkState(handler.mHowManyTimes == null, "Unfinished verify() statements"); - checkState(handler.mOrderCounter == null, "Unfinished verify() statements"); - checkState(handler.mStubbingAction == null, "Unfinished stubbing statements"); - handler.mStubbingAction = mAction; - sUnfinishedStubbingActions.add(mAction); - return handler.<T>getStubbingMock(); - } - } - - /** - * The static list of argument matchers, used in the next method call to the mock. - * - * <p>In order to support the syntax like this: verify(mFoo).someMethod(anyInt()), it is - * required that the anyInt() method store the value somewhere for use when the someMethod - * is invoked. That somewhere has to be static. I don't like it any more than you do. - * - * <p>The same goes for anything that is passed into the someMethod as an argument - be it - * a capture(mCaptureString) or eq(5) or whatever. - * - * <p>Avoiding the use of statics requires that we change the syntax of the verify statement, - * and I can't think of an elegant way of doing it, and in any case I really like the current - * syntax, so for now a static variable it is. - * - * <p>This match arguments list should contain either zero elements (the next method call will - * not use any argument matchers) or it should contain exactly one argument matcher for - * every argument being passed to the next method call. You can't mix argument matchers and - * raw values. - */ - private static final List<ArgumentMatcher> sMatchArguments = new ArrayList<ArgumentMatcher>(); - - /** Global invocation order of every mock method call. */ - private static final AtomicLong sGlobalInvocationOrder = new AtomicLong(); - - /** Encapsulates a single call of a method with associated arguments. */ - private static class MethodCall { - /** The method call. */ - private final Method mMethod; - /** The arguments provided at the time the call happened. */ - private final Object[] mArgs; - /** The order in which this method call was invoked. */ - private final long mInvocationOrder; - /** The line from the test that invoked the handler to create this method call. */ - private final StackTraceElement mElement; - /** Keeps track of method calls that have been verified, for verifyNoMoreInteractions(). */ - public boolean mWasVerified = false; - - public MethodCall(Method method, StackTraceElement element, Object[] args) { - mMethod = method; - mElement = element; - mArgs = args; - mInvocationOrder = sGlobalInvocationOrder.getAndIncrement(); - } - - public boolean argsMatch(Object[] args) { - return Arrays.equals(mArgs, args); - } - - @Override - public String toString() { - return "MethodCall [method=" + mMethod + ", args=" + Arrays.toString(mArgs) + "]"; - } - } - - private static boolean areMethodsSame(Method first, Method second) { - return areEqual(first.getDeclaringClass(), second.getDeclaringClass()) && - areEqual(first.getName(), second.getName()) && - areEqual(first.getReturnType(), second.getReturnType()) && - Arrays.equals(first.getParameterTypes(), second.getParameterTypes()); - } - - private static boolean areEqual(Object a, Object b) { - if (a == null) { - return b == null; - } - return a.equals(b); - } - - /** - * Magically handles the invoking of method calls. - * - * <p>This object is in one of three states, default (where invoking methods returns default - * values and records the call), verifying (where invoking method calls makes sure that those - * method calls happen with the supplied arguments or matchers) or stubbing (where the next method - * call tells us which arguments to match in order to perform the desired behaviour). - */ - private static class DefaultInvocationHandler implements InvocationHandler { - private static Method sEqualsMethod; - private static Method sHashCodeMethod; - private static Method sToStringMethod; - - static { - try { - sEqualsMethod = Object.class.getMethod("equals", Object.class); - sHashCodeMethod = Object.class.getMethod("hashCode"); - sToStringMethod = Object.class.getMethod("toString"); - } catch (SecurityException e) { - // Should never happen. - throw new RuntimeException("Your JVM/classloader is broken", e); - } catch (NoSuchMethodException e) { - // Should never happen. - throw new RuntimeException("Your JVM/classloader is broken", e); - } - } - - /** The class of the mocked objects. */ - private final Class<?> mClazz; - /** The field name in which the mock is assigned. */ - private final String mFieldName; - - /** The list of method calls executed on the mock. */ - private List<MethodCall> mRecordedCalls = new CopyOnWriteArrayList<MethodCall>(); - /** The list of method calls that were stubbed out and their corresponding actions. */ - private List<StubbedCall> mStubbedCalls = new CopyOnWriteArrayList<StubbedCall>(); - - /** - * The number of times a given call should be verified. - * - * <p>It is not null when in the verification state, and it is actually used to determine if we - * are in the verification state. - * - * <p>It is reset to null once the verification has occurred. - */ - private CallCount mHowManyTimes = null; - private OrderChecker mOrderCounter = null; - - /** - * The action to be associated with the stubbed method. - * - * <p>It is not null when in the stubbing state, and it is actually used to determine if we are - * in the stubbing state. - */ - private Action mStubbingAction = null; - - /** Dynamic proxy used to verify calls against this mock. */ - private final Object mVerifyingMock; - - /** Dynamic proxy used to stub calls against this mock. */ - private final Object mStubbingMock; - - /** - * Creates a new invocation handler for an object. - * - * @param clazz the class the object belongs to - * @param fieldName The name to be used to refer to the object. This may either be the name of - * the field this mock will be stored into (in case it uses @Mock) or a suitable name to - * use to refer to the object in error messages, based on the name of the class itself. - */ - public DefaultInvocationHandler(Class<?> clazz, String fieldName) { - mClazz = clazz; - mFieldName = fieldName; - mVerifyingMock = createVerifyingMock(clazz); - mStubbingMock = createStubbingMock(clazz); - } - - // Safe if you call getHandlerFrom(mock).getVerifyingMock(), since this is guaranteed to be - // of the same type as mock itself. - @SuppressWarnings("unchecked") - public <T> T getVerifyingMock() { - return (T) mVerifyingMock; - } - - // Safe if you call getHandlerFrom(mock).getStubbingMock(), since this is guaranteed to be - // of the same type as mock itself. - @SuppressWarnings("unchecked") - public <T> T getStubbingMock() { - return (T) mStubbingMock; - } - - /** Used to check that we always stub and verify from the same thread. */ - private AtomicReference<Thread> mCurrentThread = new AtomicReference<Thread>(); - - /** Check that we are stubbing and verifying always from the same thread. */ - private void checkThread() { - Thread currentThread = Thread.currentThread(); - mCurrentThread.compareAndSet(null, currentThread); - if (mCurrentThread.get() != currentThread) { - throw new IllegalStateException("Must always mock and stub from one thread only. " - + "This thread: " + currentThread + ", the other thread: " + mCurrentThread.get()); - } - } - - /** Generate the dynamic proxy that will handle verify invocations. */ - private Object createVerifyingMock(Class<?> clazz) { - return createProxy(clazz, new InvocationHandler() { - @Override - public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { - checkThread(); - expect(mHowManyTimes != null, "verifying mock doesn't know how many times"); - try { - ArgumentMatcher[] matchers = checkClearAndGetMatchers(method); - StackTraceElement callSite = new Exception().getStackTrace()[2]; - MethodCall methodCall = new MethodCall(method, callSite, args); - innerVerify(method, matchers, methodCall, proxy, callSite, mHowManyTimes, mOrderCounter); - return defaultReturnValue(method.getReturnType()); - } finally { - sUnfinishedCallCounts.remove(mHowManyTimes); - mHowManyTimes = null; - mOrderCounter = null; - } - } - }); - } - - /** Generate the dynamic proxy that will handle stubbing invocations. */ - private Object createStubbingMock(Class<?> clazz) { - return createProxy(clazz, new InvocationHandler() { - @Override - public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { - checkThread(); - expect(mStubbingAction != null, "stubbing mock doesn't know what action to perform"); - try { - ArgumentMatcher[] matchers = checkClearAndGetMatchers(method); - StackTraceElement callSite = new Exception().getStackTrace()[2]; - MethodCall methodCall = new MethodCall(method, callSite, args); - innerStub(method, matchers, methodCall, callSite, mStubbingAction); - return defaultReturnValue(method.getReturnType()); - } finally { - sUnfinishedStubbingActions.remove(mStubbingAction); - mStubbingAction = null; - } - } - }); - } - - @Override - public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { - StackTraceElement callSite = new Exception().getStackTrace()[2]; - MethodCall methodCall = new MethodCall(method, callSite, args); - return innerRecord(method, args, methodCall, proxy, callSite); - } - - /** - * Checks whether the given method is one of the special object methods that should not - * verified or stubbed. - * <p> - * If this is one of such methods, it throws an AssertionException. - * - * @param method the method to be checked - * @param operation the name of the operation, used for generating a helpful message - */ - private void checkSpecialObjectMethods(Method method, String operation) { - if (areMethodsSame(method, sEqualsMethod) - || areMethodsSame(method, sHashCodeMethod) - || areMethodsSame(method, sToStringMethod)) { - fail("cannot " + operation + " call to " + method); - } - } - - private void reset() { - mRecordedCalls.clear(); - mStubbedCalls.clear(); - mHowManyTimes = null; - mOrderCounter = null; - mStubbingAction = null; - } - - private Object innerRecord(Method method, final Object[] args, - MethodCall methodCall, Object proxy, StackTraceElement callSite) throws Throwable { - if (areMethodsSame(method, sEqualsMethod)) { - // Use identify for equality, the default behavior on object. - return proxy == args[0]; - } else if (areMethodsSame(method, sHashCodeMethod)) { - // This depends on the fact that each mock has its own DefaultInvocationHandler. - return hashCode(); - } else if (areMethodsSame(method, sToStringMethod)) { - // This is used to identify this is a mock, e.g., in error messages. - return "Mock<" + mClazz.getName() + ">"; - } - mRecordedCalls.add(methodCall); - for (StubbedCall stubbedCall : mStubbedCalls) { - if (areMethodsSame(stubbedCall.mMethodCall.mMethod, methodCall.mMethod)) { - if (stubbedCall.mMethodCall.argsMatch(methodCall.mArgs)) { - methodCall.mWasVerified = true; - return stubbedCall.mAction.doAction(method, args); - } - } - } - // If no stub is defined, return the default value. - return defaultReturnValue(method.getReturnType()); - } - - private void innerStub(Method method, final ArgumentMatcher[] matchers, MethodCall methodCall, - StackTraceElement callSite, final Action stubbingAction) { - checkSpecialObjectMethods(method, "stub"); - checkThisActionCanBeUsedForThisMethod(method, stubbingAction, callSite); - if (matchers.length == 0) { - // If there are no matchers, then this is a simple stubbed method call with an action. - mStubbedCalls.add(0, new StubbedCall(methodCall, stubbingAction)); - return; - } - // If there are matchers, then we need to make a new method call which matches only - // when all the matchers match. Further, the action that method call needs to take - // is to first record the values into any captures that may be present, and only then - // proceed to execute the original action. - MethodCall matchMatchersMethodCall = new MethodCall(method, callSite, matchers) { - @Override - public boolean argsMatch(Object[] args) { return doMatchersMatch(matchers, args); } - }; - Action setCapturesThenAction = new Action() { - @Override - public Object doAction(Method innerMethod, Object[] innerArgs) throws Throwable { - setCaptures(matchers, innerArgs); - return stubbingAction.doAction(innerMethod, innerArgs); - } - @Override - public Class<?> getReturnType() { - return stubbingAction.getReturnType(); - } - }; - mStubbedCalls.add(0, new StubbedCall(matchMatchersMethodCall, setCapturesThenAction)); - } - - private void checkThisActionCanBeUsedForThisMethod(Method method, final Action stubbingAction, - StackTraceElement callSite) { - Class<?> methodType = method.getReturnType(); - Class<?> actionType = stubbingAction.getReturnType(); - if (actionType == null) { - // We could not determine the type returned by this action at the time we - // created it. At this time we cannot check that the returned value is - // appropriate to the return type of the method. - // However, if the type is not correct, any actual invocation of the method - // will fail later on. - return; - } - if (!methodType.isAssignableFrom(actionType)) { - if (methodType.isPrimitive() && - actionType.equals(PRIMITIVE_TO_BOXED_LOOKUP.get(methodType))) { - return; - } - StringBuffer sb = new StringBuffer(); - sb.append("\nCan't return ").append(actionType.getSimpleName()).append(" from stub for:"); - appendDebugStringForMethodCall(sb, method, callSite, mFieldName, true); - sb.append("\n"); - throw new IllegalArgumentException(sb.toString()); - } - } - - private boolean doMatchersMatch(ArgumentMatcher[] matchers, Object[] args) { - for (int i = 0; i < matchers.length; ++i) { - if (!matchers[i].matches(args[i])) { - return false; - } - } - return true; - } - - private void innerVerify(Method method, ArgumentMatcher[] matchers, MethodCall methodCall, - Object proxy, StackTraceElement callSite, CallCount callCount, OrderChecker orderCounter) { - checkSpecialObjectMethods(method, "verify"); - List<MethodCall> calls = countMatchingInvocations(method, matchers, methodCall); - long callTimeout = callCount.getTimeout(); - checkState(orderCounter == null || callTimeout == 0, "can't inorder verify with a timeout"); - if (callTimeout > 0) { - long endTime = System.currentTimeMillis() + callTimeout; - while (!callCount.matches(calls.size())) { - try { - Thread.sleep(1); - } catch (InterruptedException e) { - fail("interrupted whilst waiting to verify"); - } - if (System.currentTimeMillis() > endTime) { - fail(formatFailedVerifyMessage(methodCall, calls.size(), callTimeout, callCount)); - } - calls = countMatchingInvocations(method, matchers, methodCall); - } - } else { - if (orderCounter != null) { - orderCounter.checkOrder(calls, mFieldName); - } else if (!callCount.matches(calls.size())) { - fail(formatFailedVerifyMessage(methodCall, calls.size(), 0, callCount)); - } - } - } - - private List<MethodCall> countMatchingInvocations(Method method, ArgumentMatcher[] matchers, - MethodCall methodCall) { - List<MethodCall> methodCalls = new ArrayList<MethodCall>(); - for (MethodCall call : mRecordedCalls) { - if (areMethodsSame(call.mMethod, method)) { - if ((matchers.length > 0 && doMatchersMatch(matchers, call.mArgs)) || - call.argsMatch(methodCall.mArgs)) { - setCaptures(matchers, call.mArgs); - methodCalls.add(call); - call.mWasVerified = true; - } - } - } - return methodCalls; - } - - private String formatFailedVerifyMessage(MethodCall methodCall, int total, long timeoutMillis, - CallCount callCount) { - StringBuffer sb = new StringBuffer(); - sb.append("\nExpected ").append(callCount); - if (timeoutMillis > 0) { - sb.append(" within " + timeoutMillis + "ms"); - } - sb.append(" to:"); - appendDebugStringForMethodCall(sb, methodCall.mMethod, - methodCall.mElement, mFieldName, false); - sb.append("\n\n"); - if (mRecordedCalls.size() == 0) { - sb.append("No method calls happened on this mock"); - } else { - sb.append("Method calls that did happen:"); - for (MethodCall recordedCall : mRecordedCalls) { - appendDebugStringForMethodCall(sb, recordedCall.mMethod, - recordedCall.mElement, mFieldName, false); - } - } - sb.append("\n"); - return sb.toString(); - } - - /** All matchers that are captures will store the corresponding arg value. */ - // This suppress warning means that I'm calling setValue with something that I can't promise - // is of the right type. But I think it is unavoidable. Certainly I could give a better - // error message than the class cast exception you'll get when you try to retrieve the value. - @SuppressWarnings("unchecked") - private void setCaptures(ArgumentMatcher[] matchers, Object[] args) { - for (int i = 0; i < matchers.length; ++i) { - if (matchers[i] instanceof ArgumentCaptorImpl) { - ArgumentCaptorImpl.class.cast(matchers[i]).setValue(args[i]); - } - } - } - - /** An empty array of matchers, to optimise the toArray() call below. */ - private static final ArgumentMatcher[] EMPTY_MATCHERS_ARRAY = new ArgumentMatcher[0]; - - /** Makes sure that we have the right number of MATCH_ARGUMENTS for the given method. */ - private ArgumentMatcher[] checkClearAndGetMatchers(Method method) { - ArgumentMatcher[] matchers = sMatchArguments.toArray(EMPTY_MATCHERS_ARRAY); - sMatchArguments.clear(); - if (matchers.length > 0 && method.getParameterTypes().length != matchers.length) { - throw new IllegalArgumentException("You can't mix matchers and regular objects."); - } - return matchers; - } - } - - private static void appendDebugStringForMethodCall(StringBuffer sb, Method method, - StackTraceElement callSite, String fieldName, boolean showReturnType) { - sb.append("\n "); - if (showReturnType) { - sb.append("(").append(method.getReturnType().getSimpleName()).append(") "); - } - sb.append(fieldName).append(".").append(method.getName()).append("("); - int i = 0; - for (Class<?> type : method.getParameterTypes()) { - if (++i > 1) { - sb.append(", "); - } - sb.append(type.getSimpleName()); - } - sb.append(")\n at ").append(callSite); - } - - /** Call this function when you don't expect there to be any outstanding matcher objects. */ - private static void checkNoMatchers() { - if (sMatchArguments.size() > 0) { - sMatchArguments.clear(); - throw new IllegalStateException("You have outstanding matchers, must be programming error"); - } - } - - /** A pairing of a method call and an action to be performed when that call happens. */ - private static class StubbedCall { - private final MethodCall mMethodCall; - private final Action mAction; - - public StubbedCall(MethodCall methodCall, Action action) { - mMethodCall = methodCall; - mAction = action; - } - - @Override - public String toString() { - return "StubbedCall [methodCall=" + mMethodCall + ", action=" + mAction + "]"; - } - } - - /** Represents an action to be performed as a result of a method call. */ - private interface Action { - public Object doAction(Method method, Object[] arguments) throws Throwable; - /** The type of the action, or null if we can't determine the type at stub time. */ - public Class<?> getReturnType(); - } - - /** Represents something capable of testing if it matches an argument or not. */ - public interface ArgumentMatcher { - public boolean matches(Object value); - } - - /** A matcher that matches any argument. */ - private static class MatchAnything implements ArgumentMatcher { - @Override - public boolean matches(Object value) { return true; } - } - - /** Encapsulates the number of times a method is called, between upper and lower bounds. */ - private static class CallCount { - private long mLowerBound; - private long mUpperBound; - - public CallCount(long lowerBound, long upperBound) { - mLowerBound = lowerBound; - mUpperBound = upperBound; - } - - /** Tells us if this call count matches a desired count. */ - public boolean matches(long total) { - return total >= mLowerBound && total <= mUpperBound; - } - - /** Tells us how long we should block waiting for the verify to happen. */ - public long getTimeout() { - return 0; - } - - public CallCount setLowerBound(long lowerBound) { - mLowerBound = lowerBound; - return this; - } - - public CallCount setUpperBound(long upperBound) { - mUpperBound = upperBound; - return this; - } - - @Override - public String toString() { - if (mLowerBound == mUpperBound) { - return "exactly " + mLowerBound + plural(" call", mLowerBound); - } else { - return "between " + mLowerBound + plural(" call", mLowerBound) + " and " + - mUpperBound + plural(" call", mUpperBound); - } - } - } - - /** Encapsulates adding number of times behaviour to a call count with timeout. */ - public static final class Timeout extends CallCount { - private long mTimeoutMillis; - - public Timeout(long lowerBound, long upperBound, long timeoutMillis) { - super(lowerBound, upperBound); - mTimeoutMillis = timeoutMillis; - } - - @Override - public long getTimeout() { - return mTimeoutMillis; - } - - public CallCount times(int times) { return setLowerBound(times).setUpperBound(times); } - public CallCount atLeast(long n) { return setLowerBound(n).setUpperBound(Long.MAX_VALUE); } - public CallCount atLeastOnce() { return setLowerBound(1).setUpperBound(Long.MAX_VALUE); } - public CallCount between(long n, long m) { return setLowerBound(n).setUpperBound(m); } - } - - /** Helper method to add an 's' to a string iff the count is not 1. */ - private static String plural(String prefix, long count) { - return (count == 1) ? prefix : (prefix + "s"); - } - - /** Helps us implement the eq(), any() and capture() and other methods on one line. */ - private static <T> T addMatcher(ArgumentMatcher argument, T value) { - sMatchArguments.add(argument); - return value; - } - - /** A custom argument matcher, should be used only for object arguments not primitives. */ - public static <T> T matches(ArgumentMatcher argument) { - sMatchArguments.add(argument); - return null; - } - - /** Utility method to throw an AssertionError if an assertion fails. */ - private static void expect(boolean result, String message) { - if (!result) { - fail(message); - } - } - - /** Throws an AssertionError exception with a message. */ - private static void fail(String message) { - throw new AssertionError(message); - } - - /** Static mapping from class type to default value for that type. */ - private static final Map<Class<?>, Object> DEFAULT_RETURN_VALUE_LOOKUP; - static { - DEFAULT_RETURN_VALUE_LOOKUP = new HashMap<Class<?>, Object>(); - DEFAULT_RETURN_VALUE_LOOKUP.put(int.class, 0); - DEFAULT_RETURN_VALUE_LOOKUP.put(boolean.class, false); - DEFAULT_RETURN_VALUE_LOOKUP.put(byte.class, (byte) 0); - DEFAULT_RETURN_VALUE_LOOKUP.put(long.class, (long) 0); - DEFAULT_RETURN_VALUE_LOOKUP.put(short.class, (short) 0); - DEFAULT_RETURN_VALUE_LOOKUP.put(float.class, (float) 0); - DEFAULT_RETURN_VALUE_LOOKUP.put(double.class, (double) 0); - DEFAULT_RETURN_VALUE_LOOKUP.put(char.class, '\u0000'); - DEFAULT_RETURN_VALUE_LOOKUP.put(String.class, null); - } - - /** Static lookup from primitive types to their boxed versions. */ - private static final Map<Class<?>, Class<?>> PRIMITIVE_TO_BOXED_LOOKUP; - static { - PRIMITIVE_TO_BOXED_LOOKUP = new HashMap<Class<?>, Class<?>>(); - PRIMITIVE_TO_BOXED_LOOKUP.put(int.class, Integer.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(boolean.class, Boolean.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(byte.class, Byte.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(long.class, Long.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(short.class, Short.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(float.class, Float.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(double.class, Double.class); - PRIMITIVE_TO_BOXED_LOOKUP.put(char.class, Character.class); - } - - /** For a given class type, returns the default value for that type. */ - private static Object defaultReturnValue(Class<?> returnType) { - return DEFAULT_RETURN_VALUE_LOOKUP.get(returnType); - } - - /** Gets a suitable class loader for use with the proxy. */ - private static ClassLoader getClassLoader() { - return LittleMock.class.getClassLoader(); - } - - /** Sets a member field on an object via reflection (can set private members too). */ - private static void setField(Field field, Object object, Object value) throws Exception { - field.setAccessible(true); - field.set(object, value); - field.setAccessible(false); - } - - /** Helper method to throw an IllegalStateException if given condition is not met. */ - private static void checkState(boolean condition, String message) { - if (!condition) { - throw new IllegalStateException(message); - } - } - - /** Helper method to throw an IllegalStateException if given condition is not met. */ - private static void checkState(boolean condition) { - if (!condition) { - throw new IllegalStateException(); - } - } - - /** - * If the input object is one of our mocks, returns the {@link DefaultInvocationHandler} - * we constructed it with. Otherwise fails with {@link IllegalArgumentException}. - */ - private static DefaultInvocationHandler getHandlerFrom(Object mock) { - try { - InvocationHandler invocationHandler = Proxy.getInvocationHandler(mock); - if (invocationHandler instanceof DefaultInvocationHandler) { - return (DefaultInvocationHandler) invocationHandler; - } - } catch (IllegalArgumentException expectedIfNotAProxy) {} - try { - Class<?> proxyBuilder = Class.forName("com.google.dexmaker.stock.ProxyBuilder"); - Method getHandlerMethod = proxyBuilder.getMethod("getInvocationHandler", Object.class); - Object invocationHandler = getHandlerMethod.invoke(proxyBuilder, mock); - if (invocationHandler instanceof DefaultInvocationHandler) { - return (DefaultInvocationHandler) invocationHandler; - } - } catch (Exception expectedIfNotAProxyBuilderMock) {} - try { - // Try with javassist. - Class<?> proxyObjectClass = Class.forName("javassist.util.proxy.ProxyObject"); - Method getHandlerMethod = proxyObjectClass.getMethod("getHandler"); - Object methodHandler = getHandlerMethod.invoke(mock); - InvocationHandler invocationHandler = Proxy.getInvocationHandler(methodHandler); - Method getOriginalMethod = invocationHandler.getClass().getMethod("$$getOriginal"); - Object original = getOriginalMethod.invoke(invocationHandler); - if (original instanceof DefaultInvocationHandler) { - return (DefaultInvocationHandler) original; - } - } catch (Exception expectedIfNotJavassistProxy) {} - throw new IllegalArgumentException("not a valid mock: " + mock); - } - - private static boolean canUseJavassist() { - try { - Class.forName("javassist.util.proxy.ProxyFactory"); - return true; - } catch (Exception expectedIfNotJavassistProxy) { - return false; - } - } - - /** Create a dynamic proxy for the given class, delegating to the given invocation handler. */ - private static Object createProxy(Class<?> clazz, final InvocationHandler handler) { - // Interfaces are simple. Just proxy them using java.lang.reflect.Proxy. - if (clazz.isInterface()) { - return Proxy.newProxyInstance(getClassLoader(), new Class<?>[] { clazz }, handler); - } - // Try with javassist. - if (canUseJavassist()) { - try { - Class<?> proxyFactoryClass = Class.forName("javassist.util.proxy.ProxyFactory"); - Object proxyFactory = proxyFactoryClass.newInstance(); - Method setSuperclassMethod = proxyFactoryClass.getMethod("setSuperclass", Class.class); - setSuperclassMethod.invoke(proxyFactory, clazz); - Class<?> methodFilterClass = Class.forName("javassist.util.proxy.MethodFilter"); - InvocationHandler methodFilterHandler = new InvocationHandler() { - @Override - public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { - checkState(method.getName().equals("isHandled")); - checkState(args.length == 1); - checkState(args[0] instanceof Method); - Method invokedMethod = (Method) args[0]; - String methodName = invokedMethod.getName(); - Class<?>[] params = invokedMethod.getParameterTypes(); - if ("equals".equals(methodName) && params.length == 1 - && Object.class.equals(params[0])) { - return false; - } - if ("hashCode".equals(methodName) && params.length == 0) { - return false; - } - if ("toString".equals(methodName) && params.length == 0) { - return false; - } - if ("finalize".equals(methodName) && params.length == 0) { - return false; - } - return true; - } - }; - Object methodFilter = Proxy.newProxyInstance(getClassLoader(), - new Class<?>[] { methodFilterClass }, methodFilterHandler); - Method setFilterMethod = proxyFactoryClass.getMethod("setFilter", methodFilterClass); - setFilterMethod.invoke(proxyFactory, methodFilter); - Method createClassMethod = proxyFactoryClass.getMethod("createClass"); - Class<?> createdClass = (Class<?>) createClassMethod.invoke(proxyFactory); - InvocationHandler methodHandlerHandler = new InvocationHandler() { - @SuppressWarnings("unused") - public InvocationHandler $$getOriginal() { - return handler; - } - @Override - public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { - checkState(method.getName().equals("invoke")); - checkState(args.length == 4); - checkState(args[1] instanceof Method); - Method invokedMethod = (Method) args[1]; - checkState(args[3] instanceof Object[]); - return handler.invoke(args[0], invokedMethod, (Object[]) args[3]); - } - }; - Class<?> methodHandlerClass = Class.forName("javassist.util.proxy.MethodHandler"); - Object methodHandler = Proxy.newProxyInstance(getClassLoader(), - new Class<?>[] { methodHandlerClass }, methodHandlerHandler); - Object proxy = unsafeCreateInstance(createdClass); - Class<?> proxyObjectClass = Class.forName("javassist.util.proxy.ProxyObject"); - Method setHandlerMethod = proxyObjectClass.getMethod("setHandler", methodHandlerClass); - setHandlerMethod.invoke(proxy, methodHandler); - return proxy; - } catch (Exception e) { - // Not supported, something went wrong. Fall through, try android dexmaker. - e.printStackTrace(System.err); - } - } - // So, this is a class. First try using Android's ProxyBuilder from dexmaker. - try { - Class<?> proxyBuilder = Class.forName("com.google.dexmaker.stock.ProxyBuilder"); - Method forClassMethod = proxyBuilder.getMethod("forClass", Class.class); - Object builder = forClassMethod.invoke(null, clazz); - Method dexCacheMethod = builder.getClass().getMethod("dexCache", File.class); - File directory = AppDataDirGuesser.getsInstance().guessSuitableDirectoryForGeneratedClasses(); - builder = dexCacheMethod.invoke(builder, directory); - Method buildClassMethod = builder.getClass().getMethod("buildProxyClass"); - Class<?> resultClass = (Class<?>) buildClassMethod.invoke(builder); - Object proxy = unsafeCreateInstance(resultClass); - Field handlerField = resultClass.getDeclaredField("$__handler"); - handlerField.setAccessible(true); - handlerField.set(proxy, handler); - return proxy; - } catch (Exception e) { - throw new IllegalStateException("Could not mock this concrete class", e); - } - } - - /** Attempt to construct an instance of the class using hacky methods to avoid calling super. */ - @SuppressWarnings("unchecked") - private static <T> T unsafeCreateInstance(Class<T> clazz) { - // try jvm - try { - Class<?> unsafeClass = Class.forName("sun.misc.Unsafe"); - Field f = unsafeClass.getDeclaredField("theUnsafe"); - f.setAccessible(true); - final Object unsafe = f.get(null); - final Method allocateInstance = unsafeClass.getMethod("allocateInstance", Class.class); - return (T) allocateInstance.invoke(unsafe, clazz); - } catch (Exception ignored) {} - // try dalvikvm, pre-gingerbread - try { - final Method newInstance = ObjectInputStream.class.getDeclaredMethod( - "newInstance", Class.class, Class.class); - newInstance.setAccessible(true); - return (T) newInstance.invoke(null, clazz, Object.class); - } catch (Exception ignored) {} - // try dalvikvm, post-gingerbread - try { - Method getConstructorId = ObjectStreamClass.class.getDeclaredMethod( - "getConstructorId", Class.class); - getConstructorId.setAccessible(true); - final int constructorId = (Integer) getConstructorId.invoke(null, Object.class); - final Method newInstance = ObjectStreamClass.class.getDeclaredMethod( - "newInstance", Class.class, int.class); - newInstance.setAccessible(true); - return (T) newInstance.invoke(null, clazz, constructorId); - } catch (Exception ignored) {} - throw new IllegalStateException("unsafe create instance failed"); - } - - /** See {@link LittleMock#inOrder(Object[])}. */ - public interface InOrder { - <T> T verify(T mock); - } - - /** - * Used to verify that invocations happen in a given order. - * <p> - * Still slight experimental at the moment: you can only verify one method call at a time, - * and we ignore the mocks array you pass in as an argument, you may use the returned inorder - * to verify all mocks. - * <p> - * This implementation is simple: the InOrder you get from this call can be used to verify that - * a sequence of method calls happened in the order you specify. Every verify you make with - * this InOrder will be compared with every other verify you made, to make sure that all the - * original invocations happened in exactly that same order. - */ - public static InOrder inOrder(Object... mocks) { - return new InOrder() { - private final OrderChecker mChecker = new OrderChecker(); - @Override - public <T> T verify(T mock) { - return LittleMock.verify(mock, times(1), mChecker); - } - }; - } -} |