JAVAlang.LinkageError:尝试使用Mockito参数匹配器时加载程序约束冲突

Question

我试图测试一个类，我有自己的参数Mathcher来匹配这些参数。代码如下：

 @Test
public void testDoBindModelsToForm()
{
    OrganizationToRelatedSubregionsConverter organizationToRelatedSubregionsConverter = mock(OrganizationToRelatedSubregionsConverter.class);
    List<Organization> subregion1 = new ArrayList<Organization>();

    Organization subregionOrg1 = CommonentityFactory.eINSTANCE.createOrganization();
    subregionOrg1.setMID(OrganizationMID.create(DOMAIN, 100L));
    subregionOrg1.setNameFormatted("Subregion 1"); //$NON-NLS-1$
    subregion1.add(subregionOrg1);
    when(
            organizationToRelatedSubregionsConverter.convert(Matchers
                    .argThat(new OrganizationMIDMatcher(catchmentArea1.getMID())))).thenReturn(
            subregion1);

    CatchmentFormController catchmentFormController = new CatchmentFormController(
            catchmentForm, DOMAIN, conversationDescriptor, configuration, registrationManager,
            catchment, null, LaunchMode.ADD, organizationToRelatedSubregionsConverter);

    catchmentFormController.renderDynamicForm();
    organizationToRelatedSubregionsConverter.convert(catchmentArea1.getMID());
}

这是我的自定义匹配器类：

static class OrganizationMIDMatcher extends ArgumentMatcher<OrganizationMID>
{
    private OrganizationMID expectedOrganizationMID;

    public OrganizationMIDMatcher(OrganizationMID expectedOrganizationMID)
    {
        this.expectedOrganizationMID = expectedOrganizationMID;
    }

    @Override
    public boolean matches(Object argument)
    {
        if (argument != null && argument instanceof OrganizationMID)
        {
            OrganizationMID actualOrganization = (OrganizationMID) argument;
            return actualOrganization.equals(expectedOrganizationMID);
        }
        return false;
    }
}

当我运行测试时，我得到以下错误。我使用的Mockito依赖项是mockitoall 1.8.5

  > java.lang.LinkageError: loader constraint violation:
 when resolving method "org.mockito.Matchers.argThat(Lorg/hamcrest/Matcher;)Ljava/lang/Object;" 
 the class loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader)
 of the current class, com/cerner/registration/ui/internal/converters/OrganizationToRelatedSubregionsConverterTest,
 and the class loader
    (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) for resolved class,
 org/mockito/Matchers, have different Class objects for the type org/hamcrest/Matcher used in the signature

你知道这里有什么问题吗

Answer 1

不应将mockito-all与junit{}一起使用。两者都包含hamcrest依赖项，并且由于它们在OSGi环境中使用不同的类加载器，这些类将不兼容。作为一种解决方案，您应该考虑使用{{CD5}}（^ {CD6}}，如果希望使用相同的版本）和至少^ {< CD7> }版本^ {< CD2> }（在那里它们开始捆绑{^

或者——不必遵循——您可以“分叉”4.8.2版本的junit，并在不使用hamcrest类的情况下重新打包它