%zeros-like = "tf.ZerosLike"(%addn) : (tensor<!tf_type.variant<tensor<f32>>>) -> tensor<!tf_type.variant<tensor<f32>>>
  // CHECK-NEXT: %[[ADDN2:.*]] = "tf.AddN"(%[[ADDN]], %[[ZEROS_LIKE]]) : (tensor<10xf32>, tensor<10xf32>) -> tensor<10xf32>
  %addn2 = "tf.AddN"(%addn, %zeros-like) : (tensor<!tf_type.variant<tensor<f32>>>, tensor<!tf_type.variant<tensor<f32>>>) -> tensor<!tf_type.variant<tensor<f32>>>

// -----

func.func @testIfThen(%arg0: tensor<!tf_type.variant>) -> tensor<!tf_type.variant> {
  func.return %arg0 : tensor<!tf_type.variant>
}
func.func @testIfElse(%arg0: tensor<!tf_type.variant>) -> tensor<!tf_type.variant> {
  func.return %arg0 : tensor<!tf_type.variant>
}

// CHECK-LABEL: func @testIfCasts(%arg0: tensor<i1>, %arg1: tensor<!tf_type.variant<tensor<f32>>>) -> tensor<!tf_type.variant<tensor<f32>>>

  %0 = "tf.TensorListLength"(%arg1) : (tensor<!tf_type.variant>) -> tensor<i32>
  %1 = "tf.Identity"(%arg1) : (tensor<!tf_type.variant>) -> tensor<!tf_type.variant>
  func.return %0, %1 : tensor<i32>, tensor<!tf_type.variant>

// verify `body` function's signature.
// CHECK: func @tensorlistWhileBody(%[[ARG0:.*]]: tensor<i32>, %[[ARG:.*]]: tensor<2x3xf32>) -> (tensor<i32>, tensor<2x3xf32>)
// CHECK-NOT: tensor<!tf_type.variant>

                }
            }
        }
    }

    def "can select both main variant and test fixtures of a single component"() {
        given:
        repository {
            'org:foo:1.0' {
                variant('api') {}
                variant('runtime') {}
                variant('test-fixtures') {
                    artifact('test-fixtures')

        variant.dependencies[1].module == 'bar'
        variant.dependencies[1].version == null
        variant.dependencies[1].prefers == '2.0'
        variant.dependencies[1].strictly == null
        variant.dependencies[1].rejectsVersion == []

        variant.dependencies[2].group == 'org'
        variant.dependencies[2].module == 'baz'
        variant.dependencies[2].version == '3.0'

        then:
        gmmMetadata.parsedModuleMetadata.variant("apiElements") {
            noMoreDependencies()
        }
        gmmMetadata.parsedModuleMetadata.variant("runtimeElements") {
            noMoreDependencies()
        }
        gmmMetadata.parsedModuleMetadata.variant("custom") {
            dependency('log4j:log4j:1.2.17').exists()
            noMoreDependencies()
        }

        /**
         * Executes the underlying action if the supplied variant matches.
         *
         * @param variant the variant metadata, used to check if the rule applies
         * @param subject the subject of the rule
         */
        public void maybeExecute(VariantResolveMetadata variant, T subject) {
            if (variantName == null || variantName.equals(variant.getName())) {
                delegate.execute(subject);

Finally, Gradle selects the appropriate variant by looking at the variant attributes:

- the consumer wants a variant with attributes `org.gradle.usage=java-api`
- the producer has a matching variant (`apiElements`)
- the producer has a non-matching variant (`runtimeElements`)

Gradle provides the artifacts and dependencies from the `apiElements` variant to the consumer.

== A more complicated example

        if (variants) {
            variants.each { variant ->
                module.withVariant(variant.name) {
                    attributes = attributes ? attributes + variant.attributes : variant.attributes
                    artifacts = variant.artifacts.collect {
                        if (it.name && it.name == it.url && it.name == it.publishUrl) {

        for (SoftwareComponentVariant variant : softwareComponent.getUsages()) {
            checkVariant(variant);
            variants.add(dependencyCoordinateResolverFactory.createCoordinateResolvers(variant, versionMappingStrategy).map(resolvers ->
                new ModuleMetadataSpec.LocalVariant(
                    variant.getName(),
                    attributesFor(variant.getAttributes()),