variant.getFiles(), variant.getCapabilities(), variantToDependencies.get(variant.getName()), variant.isExternalVariant()));
        }
        ImmutableList<AbstractRealisedModuleComponentResolveMetadata.ImmutableRealisedVariantImpl> realisedVariants = builder.build();
        return new RealisedIvyModuleResolveMetadata(resolveMetadata, realisedVariants, readIvyConfigurations(decoder, resolveMetadata));

                def root = result.root
                assert root.id.projectName == 'root'
                assert root.variants.size() == 2
                def conf = root.variants.find { it.displayName == 'conf' }
                def other = root.variants.find { it.displayName == 'other' }
                assert conf != null
                assert other != null
            }
        """

        println "variants: " + artifacts.collect { it.variant.attributes }
    }
}
"""
        when:
        run 'show'

        then:
        outputContains("files: [a2.jar]")
        outputContains("variants: [{artifactType=jar, buildType=profile, flavor=tasty, usage=api}]")
    }

    def "applies producer's disambiguation rules when selecting variant"() {
        buildFile << """

        given:
        repository {
            'org:testA:1.0' {
                variant('runtime') {
                    capability('org', 'testA', '1.0')
                    capability('cap')
                }
            }
            'org:testB:1.0' {
                variant('runtime') {
                    capability('org', 'testB', '1.0')
                    capability('cap')

                variant.getFiles(), variant.getCapabilities(), variantToDependencies.get(variant.getName()), variant.isExternalVariant()));
        }
        ImmutableList<AbstractRealisedModuleComponentResolveMetadata.ImmutableRealisedVariantImpl> realisedVariants = builder.build();

- `dependencies`: optional. When missing the variant is assumed to have no dependencies. Must not be present when `available-at` is present.
- `files`: optional. When missing the variant is assumed to have no files. Must not be present when `available-at` is present.
- `capabilities`: optional. When missing, the variant is assumed to declare no specific capability.

### `attributes` value

image::xctest-task-graph.png[]

[[sec:xctest_task_variants]]
=== Variant-dependent Tasks

The XCTest Plugin creates tasks based on the variants of the test component.
Read the <<building_swift_projects.adoc#sec:introducing_build_variants-swift,introduction to build variants>> for more information.
The following diagrams show the relationship between variant-dependent tasks.

.XCTest Plugin variant-dependent task graph
image::xctest-variant-task-graph.png[]

            return variants;
        }
        ImmutableList.Builder<ComponentVariant> builder = new ImmutableList.Builder<>();
        if (variants != null) {
            builder.addAll(variants);
        }
        for (MutableComponentVariant variant : newVariants) {

	flag.Parse()

	var variants []Variant
	if *genExp {
		variants = expVariants
	} else if *genGeneric {
		variants = genericVariants
	} else {
		variants = traditionalVariants
	}
	for i := range variants {
		generate(&variants[i])
	}
}

// generate generates the code for variant `v` into a file named by `v.Path`.
func generate(v *Variant) {

        }
        fails ':checkDeps'

        then:
        def variant = 'runtime'
        if (!isGradleMetadataPublished() && useIvy()) {
            variant = 'default'
        }
        failure.assertHasCause("""Module 'cglib:cglib-nodep' has been rejected:
   Cannot select module with conflict on capability 'cglib:cglib:3.2.5' also provided by [cglib:cglib:3.2.5($variant)]""")