noClassifier.name.classifier == null

        and:
        def noExtension = new DefaultModuleComponentArtifactMetadata(Stub(ModuleComponentIdentifier), ivyArtifact("name", "type", null))
        noExtension.name.name == "name"
        noExtension.name.type == "type"
        noExtension.name.extension == null
        noExtension.name.classifier == null
    }

        withClassifier.toString() == "name-version-classifier.ext (group:module:version)"

        def noExtension = new DefaultModuleComponentArtifactIdentifier(componentId, "name", "type", null, 'classifier')
        noExtension.displayName == "name-version-classifier (group:module:version)"
        noExtension.toString() == "name-version-classifier (group:module:version)"

        withClassifier.displayName == "name-classifier.ext (<comp>)"
        withClassifier.toString() == "name-classifier.ext (<comp>)"

        def noExtension = localArtifactIdentifier(componentId, "name", "type", null, 'classifier')
        noExtension.displayName == "name-classifier (<comp>)"
        noExtension.toString() == "name-classifier (<comp>)"
    }

    def "is equal when all attributes and module version are the same"() {

            include 'super--cool'
        """

        buildFile << """
            tasks.register("noExtension") {
                doLast {
                    assert extensions.findByName('projects') == null
                }
            }
        """

        when:
        fails 'noExtension'

        then: