}

    def "adds a 'sources' container to the project model"() {
        when:
        dsl {
            apply plugin: LanguageBasePlugin
        }

        then:
        realizeSourceSets() != null
    }

    }

    ComponentSpecContainer realizeComponents() {
        project.modelRegistry.find("components", ComponentSpecContainer)
    }

    ProjectSourceSet realizeSourceSets() {
        project.modelRegistry.find("sources", ProjectSourceSet)
    }

    BinaryContainer realizeBinaries() {
        def binaries = project.modelRegistry.find("binaries", BinaryContainer)

        exe.sources instanceof ModelMap
        exe.sources.asm instanceof AssemblerSourceSet
        exe.sources.asm.source.srcDirs == [project.file("src/exe/asm")] as Set

        and:
        def sources = realizeSourceSets()
        sources as Set == exe.sources as Set
    }

    def "can configure source set locations"() {
        given:
        dsl {
            pluginManager.apply AssemblerPlugin
            model {

        lib.sources."$pluginName".exportedHeaders.srcDirs == [project.file("src/lib/headers")] as Set

        and:
        def sources = realizeSourceSets()
        sources as Set == (lib.sources as Set) + (exe.sources as Set)
    }

    def "can configure source set locations"() {
        given:
        dsl {
            pluginManager.apply pluginClass