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Mock objects library for java
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/*
 * Copyright (c) 2007 Mockito contributors
 * This program is made available under the terms of the MIT License.
 */
package org.mockito.internal;

import org.mockito.InOrder;
import org.mockito.MockSettings;
import org.mockito.exceptions.Reporter;
import org.mockito.exceptions.misusing.NotAMockException;
import org.mockito.internal.creation.MockSettingsImpl;
import org.mockito.internal.invocation.Invocation;
import org.mockito.internal.progress.IOngoingStubbing;
import org.mockito.internal.progress.MockingProgress;
import org.mockito.internal.progress.ThreadSafeMockingProgress;
import org.mockito.internal.stubbing.OngoingStubbingImpl;
import org.mockito.internal.stubbing.StubberImpl;
import org.mockito.internal.util.MockUtil;
import org.mockito.internal.verification.api.VerificationMode;
import org.mockito.stubbing.*;

import java.util.Arrays;
import java.util.List;

@SuppressWarnings("unchecked")
public class MockitoCore {

    private final Reporter reporter = new Reporter();
    private final MockUtil mockUtil = new MockUtil();
    private final MockingProgress mockingProgress = new ThreadSafeMockingProgress();

    public  T mock(Class classToMock, MockSettings mockSettings) {
        mockingProgress.validateState();
        return mockUtil.createMock(classToMock, mockingProgress, (MockSettingsImpl) mockSettings);
    }

    public IOngoingStubbing stub() {
        IOngoingStubbing stubbing = mockingProgress.pullOngoingStubbing();
        if (stubbing == null) {
            mockingProgress.reset();
            reporter.missingMethodInvocation();
        }
        return stubbing;
    }

    @Deprecated
    public  DeprecatedOngoingStubbing stub(T methodCall) {
        mockingProgress.stubbingStarted();
        return (DeprecatedOngoingStubbing) stub();
    }

    public  OngoingStubbing when(T methodCall) {
        mockingProgress.stubbingStarted();
        return (OngoingStubbing) stub();
    }
    
    
    public  T verify(T mock, VerificationMode mode) {
        if (mock == null) {
            reporter.nullPassedToVerify();
        } else if (!mockUtil.isMock(mock)) {
            reporter.notAMockPassedToVerify();
        }
        mockingProgress.verificationStarted(mode);
        return mock;
    }
    
    public  void reset(T ... mocks) {
        mockingProgress.validateState();
        mockingProgress.reset();
        mockingProgress.resetOngoingStubbing();
        
        for (T m : mocks) {
            mockUtil.resetMock(m);
        }
    }
    
    public void verifyNoMoreInteractions(Object... mocks) {
        assertMocksNotEmpty(mocks);
        mockingProgress.validateState();
        for (Object mock : mocks) {
            try {
                if (mock == null) {
                    reporter.nullPassedToVerifyNoMoreInteractions();
                }
                mockUtil.getMockHandler(mock).verifyNoMoreInteractions();
            } catch (NotAMockException e) {
                reporter.notAMockPassedToVerifyNoMoreInteractions();
            }
        }
    }
    
    private void assertMocksNotEmpty(Object[] mocks) {
        if (mocks == null || mocks.length == 0) {
            reporter.mocksHaveToBePassedToVerifyNoMoreInteractions();
        }
    }
    
    public InOrder inOrder(Object... mocks) {
        if (mocks == null || mocks.length == 0) {
            reporter.mocksHaveToBePassedWhenCreatingInOrder();
        }
        for (Object mock : mocks) {
            if (mock == null) {
                reporter.nullPassedWhenCreatingInOrder();
            } else if (!mockUtil.isMock(mock)) {
                reporter.notAMockPassedWhenCreatingInOrder();
            }
        }
        return new InOrderImpl(Arrays.asList(mocks));
    }
    
    public Stubber doAnswer(Answer answer) {
        mockingProgress.stubbingStarted();
        mockingProgress.resetOngoingStubbing();
        return new StubberImpl().doAnswer(answer);
    }
    
    public  VoidMethodStubbable stubVoid(T mock) {
        MockHandler handler = mockUtil.getMockHandler(mock);
        mockingProgress.stubbingStarted();
        return handler.voidMethodStubbable(mock);
    }

    public void validateMockitoUsage() {
        mockingProgress.validateState();
    }

    /**
     * For testing purposes only. Is not the part of main API.
     * @return last invocation
     */
    public Invocation getLastInvocation() {
        OngoingStubbingImpl ongoingStubbing = ((OngoingStubbingImpl) mockingProgress.pullOngoingStubbing());
        List allInvocations = ongoingStubbing.getRegisteredInvocations().getAll();
        return allInvocations.get(allInvocations.size()-1);
    }
}