import org.gradle.internal.component.resolution.failure.describer.NoMatchingCapabilitiesFailureDescriber;
import org.gradle.internal.component.resolution.failure.describer.RequestedConfigurationNotFoundFailureDescriber;
import org.gradle.internal.component.resolution.failure.describer.ResolutionFailureDescriber;

class JavaEcosystemAttributesDescriberTest extends Specification {
    @Subject
    JavaEcosystemAttributesDescriber describer = new JavaEcosystemAttributesDescriber()

    AttributeContainerInternal attributes = attributesFactory().mutable()

    def "describes a library"() {
        when:
        attributes.attribute(Usage.USAGE_ATTRIBUTE, named(Usage, "java-api"))

 *
 * @param <FAILURE> the type of failure that this describer can describe
 */
public interface ResolutionFailureDescriber<FAILURE extends ResolutionFailure> {
    /**
     * Tests whether this describer can be applied to a given failure.
     *
     * This defaults to {@code true} as many describers are applicable to all instances of a single failure type

        AttributeDescriber describer = AttributeDescriberSelector.selectDescriber(failure.getRequestedAttributes(), schema.orElseThrow(IllegalArgumentException::new));
        String message = buildIncompatibleGraphVariantsFailureMsg(failure, describer);

        AttributeDescriber describer = AttributeDescriberSelector.selectDescriber(failure.getRequestedAttributes(), schema);
        TreeFormatter formatter = new TreeFormatter();
        Map<String, ResolutionCandidateAssessor.AssessedCandidate> ambiguousVariants = summarizeAmbiguousVariants(failure, describer, formatter, true);

        // We're sorting the names of the variants and later attributes

        AttributeDescriber describer = AttributeDescriberSelector.selectDescriber(failure.getRequestedAttributes(), schema.orElseThrow(IllegalArgumentException::new));
        FailureSubType failureSubType = FailureSubType.determineFailureSubType(failure);
        String message = buildNoMatchingGraphVariantSelectionFailureMsg(new StyledAttributeDescriber(describer), failure, failureSubType);

     *
     * Implementations should also provide a description via the given describer.
     */
    BuildCacheService createBuildCacheService(T configuration, Describer describer);

    /**
     * Builder-style object that allows build cache service factories to describe the cache service.
     * <p>
     * The description is for human consumption.
     * It may be logged and displayed by tooling.

            .map(assessedAttribute -> "Doesn't say anything about " + describer.describeMissingAttribute(assessedAttribute.getAttribute(), assessedAttribute.getRequested()))
            .sorted()
            .collect(Collectors.toList());

        if (!compatibleAttrs.isEmpty()) {
            formatter.append(" declares ").append(style(StyledTextOutput.Style.SuccessHeader, describer.describeAttributeSet(compatibleAttrs)));
        }

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.internal.component.resolution.failure.describer;

import org.gradle.api.internal.attributes.AttributeDescriber;
import org.gradle.api.internal.attributes.AttributesSchemaInternal;
import org.gradle.internal.component.model.AttributeDescriberSelector;

        AttributeDescriber describer = AttributeDescriberSelector.selectDescriber(failure.getRequestedAttributes(), schema.orElseThrow(IllegalArgumentException::new));
        String message = buildMultipleMatchingVariantsFailureMsg(failure, describer);