//asserts classes changed/added since last snapshot. Class means file name without extension.
    void recompiledClasses(String... classNames) {
        assert changedFileNames == asSet(classNames)
    }

    void recompiledFqn(String... classNames) {
        assert getChangedFileNames(true) == asSet(classNames)
    }

    //asserts files deleted since last snapshot.
    void deletedFiles(String... fileNames) {

        when:
        file("src/main/java/foo/Other.java") << """
package foo;
public class Other {}
        """

        then:
        succeeds language.compileTaskName
        outputs.recompiledFqn("foo.Other") // should be foo.A and foo.Other
    }

    def "change to anonymous inner class recompiles enclosing class and consumer"() {
        def componentUnderTest = new LibWithAnonymousClasses()

            class StringUtils {
                static void foo() {}
                static void bar() {}
            }

        """
        run language.compileTaskName

        then:
        outputs.recompiledFqn("foo.StringUtils", "foo.Strings", "foo.Consumer")
    }

    @Issue("https://github.com/gradle/gradle/issues/7363")

        then:
        succeeds "impl:${language.compileTaskName}"
        // We recompile all module-info.java also for unrelated modules, but we don't recompile unrelated classes
        impl.recompiledFqn("my.module.first.b.B", "my.module.second.c.C", "my.module.first.module-info", "my.module.second.module-info", "my.module.unrelated.module-info")
    }

    @Requires(UnitTestPreconditions.Jdk9OrLater)