如何检查所有类是否已在Gradle中测试过

task checkTestedClasses {
    doLast {
        sourceSets.main.allJava.each { file ->
            def className = file.path.replace(".java", "").replace("/", ".")
            def testClassName = "src/test/java/${className}Test.java"
            if (!fileExists(testClassName)) {
                println "Class ${className} has not been tested."
            }
        }
    }
}

gradle checkTestedClasses