{
    "formatVersion": "1.0",
    "variants": [
        {
            "name": "api",
            "dependencyConstraints": [
                { "group": "g1", "module": "m1", "version": { "requires": "v1" } },
                { "version": { "prefers": "v2" }, "group": "g2", "module": "m2" },
                {
                    "group": "g3",
                    "module": "m3",
                    "version": { "requires": "v3" }
                }

        }
    }

    @Override
    public boolean addAll(Collection<? extends DependencyConstraint> dependencyConstraints) {
        boolean added = false;
        for (DependencyConstraint dependencyConstraint : dependencyConstraints) {
            added |= add(dependencyConstraint);
        }
        return added;
    }

            }

            assert conf.dependencyConstraints*.name == ["foo"]

            dependencies {
                implementation(constraint("com:bar:1.0"))
            }
        """

        when:
        fails("help")

        then:
        failure.assertHasErrorOutput("The value for property 'implementation' property 'dependencyConstraints' is final and cannot be changed any further.")
    }

        runtimeVariant.dependencies == project.configurations.getByName(JavaPlatformPlugin.RUNTIME_CONFIGURATION_NAME).allDependencies.withType(ModuleDependency)
        runtimeVariant.dependencyConstraints.size() == 2
        runtimeVariant.dependencyConstraints == project.configurations.getByName(JavaPlatformPlugin.RUNTIME_CONFIGURATION_NAME).allDependencyConstraints

        'all'                                | 'dependencyConstraints'    | []               | "configurations.maybeCreate('foo').dependencyConstraints"    | createDependencyConstraintSnippet() | addingPluginBuildOpQuery
        'matching{true}.all'                 | 'dependencyConstraints'    | []               | "configurations.maybeCreate('foo').dependencyConstraints"    | createDependencyConstraintSnippet() | addingPluginBuildOpQuery

        runtimeVariant.dependencies == project.configurations.getByName(JvmConstants.RUNTIME_CLASSPATH_CONFIGURATION_NAME).allDependencies.withType(ModuleDependency)
        runtimeVariant.dependencyConstraints.size() == 2
        runtimeVariant.dependencyConstraints == project.configurations.getByName(JvmConstants.RUNTIME_CLASSPATH_CONFIGURATION_NAME).allDependencyConstraints

        apiVariant.artifacts.collect {it.file} == [jarTask.archiveFile.get().asFile]

        }
        for (ModuleDependencyConstraint dependencyConstraint : dependencyConstraints) {
            variant.addDependencyConstraint(dependencyConstraint.group, dependencyConstraint.module, dependencyConstraint.versionConstraint, dependencyConstraint.reason, dependencyConstraint.attributes);
        }
        for (VariantCapability capability : capabilities) {

    }

    def "adds DependencyConstraint instances from configuration"() {
        def dependencyDescriptor1 = Mock(LocalOriginDependencyMetadata)
        def dependencyDescriptor2 = Mock(LocalOriginDependencyMetadata)
        def dependencyConstraint1 = Mock(DependencyConstraint)
        def dependencyConstraint2 = Mock(DependencyConstraint)

        when:
        def metaData = create()

        dependsOn(allAttrs)
        return this
    }

    @Override
    IvyModule dependencyConstraint(Module target) {
        dependencyConstraints << [organisation: target.group, module: target.module, revision: target.version]
        return this
    }

    @Override
    IvyModule dependencyConstraint(Map<String, ?> attributes, Module module) {

                                    }
                                }
                            }
                        }
                    })
                    dependencyConstraints(v.dependencyConstraints.collect { dc ->
                        { ->
                            if (dc.group) {
                                group dc.group
                            }