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Mockito \#1013: Defines and implements API for static mocking.
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/* | ||
* Copyright (c) 2007 Mockito contributors | ||
* This program is made available under the terms of the MIT License. | ||
*/ | ||
package org.mockito; | ||
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import org.mockito.exceptions.base.MockitoAssertionError; | ||
import org.mockito.exceptions.base.MockitoException; | ||
import org.mockito.internal.creation.StaticMockControl; | ||
import org.mockito.internal.debugging.LocationImpl; | ||
import org.mockito.internal.listeners.VerificationStartedNotifier; | ||
import org.mockito.internal.progress.MockingProgress; | ||
import org.mockito.internal.stubbing.InvocationContainerImpl; | ||
import org.mockito.internal.verification.MockAwareVerificationMode; | ||
import org.mockito.internal.verification.VerificationDataImpl; | ||
import org.mockito.invocation.Location; | ||
import org.mockito.invocation.MockHandler; | ||
import org.mockito.stubbing.OngoingStubbing; | ||
import org.mockito.verification.VerificationMode; | ||
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import static org.mockito.Mockito.times; | ||
import static org.mockito.internal.exceptions.Reporter.missingMethodInvocation; | ||
import static org.mockito.internal.progress.ThreadSafeMockingProgress.mockingProgress; | ||
import static org.mockito.internal.util.MockUtil.getInvocationContainer; | ||
import static org.mockito.internal.util.MockUtil.resetMock; | ||
import static org.mockito.internal.util.StringUtil.join; | ||
import static org.mockito.internal.verification.VerificationModeFactory.noInteractions; | ||
import static org.mockito.internal.verification.VerificationModeFactory.noMoreInteractions; | ||
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/** | ||
* Represents an active mock of a type's static methods. The mocking only affects the thread | ||
* on which this static mock was created and it is not safe to use this object from another | ||
* thread. The static mock is released when this object's {@link MockedStatic#close()} method | ||
* is invoked. If this object is never closed, the static mock will remain active on the | ||
* initiating thread. It is therefore recommended to create this object within a try-with-resources | ||
* statement unless when managed explicitly, for example by using a JUnit rule or extension. | ||
* <p> | ||
* If the {@link Mock} annotation is used on fields or method parameters of this type, a static mock | ||
* is created instead of a regular mock. The static mock is activated and released upon completing any | ||
* relevant test. | ||
* | ||
* @param <T> The type being mocked. | ||
*/ | ||
@Incubating | ||
public final class MockedStatic<T> implements AutoCloseable { | ||
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private final StaticMockControl<T> control; | ||
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private boolean closed; | ||
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private final Location location = new LocationImpl(); | ||
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public MockedStatic(StaticMockControl<T> control) { | ||
this.control = control; | ||
} | ||
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/** | ||
* See {@link Mockito#when(Object)}. | ||
*/ | ||
public <S> OngoingStubbing<S> when(Verification verification) { | ||
assertNotClosed(); | ||
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try { | ||
verification.apply(); | ||
} catch (Throwable ignored) { | ||
} | ||
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MockingProgress mockingProgress = mockingProgress(); | ||
mockingProgress.stubbingStarted(); | ||
@SuppressWarnings("unchecked") | ||
OngoingStubbing<S> stubbing = (OngoingStubbing<S>) mockingProgress.pullOngoingStubbing(); | ||
if (stubbing == null) { | ||
mockingProgress.reset(); | ||
throw missingMethodInvocation(); | ||
} | ||
return stubbing; | ||
} | ||
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/** | ||
* See {@link Mockito#verify(Object)}. | ||
*/ | ||
public void verify(Verification verification) { | ||
verify(times(1), verification); | ||
} | ||
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/** | ||
* See {@link Mockito#verify(Object, VerificationMode)}. | ||
*/ | ||
public void verify(VerificationMode mode, Verification verification) { | ||
assertNotClosed(); | ||
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MockingDetails mockingDetails = Mockito.mockingDetails(control.getType()); | ||
MockHandler handler = mockingDetails.getMockHandler(); | ||
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VerificationStartedNotifier.notifyVerificationStarted( | ||
handler.getMockSettings().getVerificationStartedListeners(), mockingDetails); | ||
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MockingProgress mockingProgress = mockingProgress(); | ||
VerificationMode actualMode = mockingProgress.maybeVerifyLazily(mode); | ||
mockingProgress.verificationStarted( | ||
new MockAwareVerificationMode( | ||
control.getType(), actualMode, mockingProgress.verificationListeners())); | ||
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try { | ||
verification.apply(); | ||
} catch (MockitoException | MockitoAssertionError e) { | ||
throw e; | ||
} catch (Throwable t) { | ||
throw new MockitoException( | ||
join( | ||
"An unexpected error occurred while verifying a static stub", | ||
"", | ||
"To correctly verify a stub, invoke a single static method of " | ||
+ control.getType().getName() | ||
+ " in the provided lambda.", | ||
"For example, if a method 'sample' was defined, provide a lambda or anonymous class containing the code", | ||
"", | ||
"() -> " + control.getType().getSimpleName() + ".sample()", | ||
"or", | ||
control.getType().getSimpleName() + "::sample"), | ||
t); | ||
} | ||
} | ||
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/** | ||
* See {@link Mockito#reset(Object[])}. | ||
*/ | ||
public void reset() { | ||
assertNotClosed(); | ||
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MockingProgress mockingProgress = mockingProgress(); | ||
mockingProgress.validateState(); | ||
mockingProgress.reset(); | ||
mockingProgress.resetOngoingStubbing(); | ||
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resetMock(control.getType()); | ||
} | ||
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/** | ||
* See {@link Mockito#clearInvocations(Object[])}. | ||
*/ | ||
public void clearInvocations() { | ||
assertNotClosed(); | ||
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MockingProgress mockingProgress = mockingProgress(); | ||
mockingProgress.validateState(); | ||
mockingProgress.reset(); | ||
mockingProgress.resetOngoingStubbing(); | ||
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getInvocationContainer(control.getType()).clearInvocations(); | ||
} | ||
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/** | ||
* {@link Mockito#verifyNoMoreInteractions(Object...)}. | ||
*/ | ||
public void verifyNoMoreInteractions() { | ||
assertNotClosed(); | ||
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mockingProgress().validateState(); | ||
InvocationContainerImpl invocations = getInvocationContainer(control.getType()); | ||
VerificationDataImpl data = new VerificationDataImpl(invocations, null); | ||
noMoreInteractions().verify(data); | ||
} | ||
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/** | ||
* See {@link Mockito#verifyNoInteractions(Object...)}. | ||
*/ | ||
public void verifyNoInteractions() { | ||
assertNotClosed(); | ||
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mockingProgress().validateState(); | ||
InvocationContainerImpl invocations = getInvocationContainer(control.getType()); | ||
VerificationDataImpl data = new VerificationDataImpl(invocations, null); | ||
noInteractions().verify(data); | ||
} | ||
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@Override | ||
public void close() { | ||
assertNotClosed(); | ||
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closed = true; | ||
control.disable(); | ||
} | ||
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/** | ||
* Releases this static mock and is non-operational if already released. | ||
*/ | ||
public void closeOnDemand() { | ||
if (!closed) { | ||
close(); | ||
} | ||
} | ||
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private void assertNotClosed() { | ||
if (closed) { | ||
throw new MockitoException( | ||
join( | ||
"The static mock created at", | ||
location.toString(), | ||
"is already resolved and cannot longer be used")); | ||
} | ||
} | ||
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@FunctionalInterface | ||
public interface Verification { | ||
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void apply() throws Throwable; | ||
} | ||
} |
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