import java.util.Set;

/**
 * An {@link ArtifactSet} representing the artifacts contributed by a single variant in a dependency
 * graph, in the context of the dependency referencing it.
 */
public class VariantResolvingArtifactSet implements ArtifactSet {

    private final VariantArtifactResolver variantResolver;
    private final ComponentGraphResolveState component;
    private final VariantGraphResolveState variant;

            }
        }
        consumerSchema = Mock(AttributesSchemaInternal)
    }

    def "returns empty set when component id does not match spec"() {
        when:
        def artifactSet = new VariantResolvingArtifactSet(variantResolver, component, variant, dependency, graphSelector, consumerSchema)
        def spec = new ArtifactSelectionSpec(ImmutableAttributes.EMPTY, { false }, selectFromAll, false, ResolutionStrategy.SortOrder.DEFAULT)

            return new ArtifactsForNode(id, new VariantResolvingArtifactSet(variantResolver, component, variant, dependency, graphVariantSelector, consumerSchema));
        }

        return artifactsByNodeId.computeIfAbsent(toNode.getNodeId(), (LongFunction<ArtifactsForNode>) value -> {
            int id = nextId++;