FAILED: org.testng.internal.ClassHelperTest.testWithDefaultMethodsBeingOverridden(class org.testng.internal.samples.classhelper.misamples.BatmanSample, 3, [org.testng.internal.samples.classhelper.misamples.BatmanSample.fly, org.testng.internal.samples.classhelper.misamples.BatmanSample.liftWeights, org.testng.internal.samples.classhelper.misamples.BatmanSample.yellSlogan])
java.lang.AssertionError: 
Expected size: 3 but was: 4 in:
["org.testng.internal.samples.classhelper.misamples.BatmanSample.yellSlogan",
    "org.testng.internal.samples.classhelper.misamples.BatmanSample.liftWeights",
    "org.testng.internal.samples.classhelper.misamples.BatmanSample.fly",
    "org.testng.internal.samples.classhelper.misamples.SuperHeroCapabilities.access$yellSlogan$jd"]
	at org.testng.internal.ClassHelperTest.testWithDefaultMethodsBeingOverridden(ClassHelperTest.kt:109)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:141)
	at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:687)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:230)
	at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:63)
	at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:995)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:203)
	at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:154)
	at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:134)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
	at org.testng.TestRunner.privateRun(TestRunner.java:741)
	at org.testng.TestRunner.run(TestRunner.java:616)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:421)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:413)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:373)
	at org.testng.SuiteRunner.run(SuiteRunner.java:312)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1274)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1208)
	at org.testng.TestNG.runSuites(TestNG.java:1112)
	at org.testng.TestNG.run(TestNG.java:1079)
	at org.testng.TestNG.privateMain(TestNG.java:1430)
	at org.testng.TestNG.main(TestNG.java:1394)

FAILED: org.testng.internal.ClassHelperTest.testWithDefaultMethodsBeingOverridden(class org.testng.internal.samples.classhelper.misamples.MickJaggerSample, 1, [org.testng.internal.samples.classhelper.misamples.MickJaggerSample.dance])
java.lang.AssertionError: 
Expected size: 1 but was: 2 in:
["org.testng.internal.samples.classhelper.misamples.IDance.access$dance$jd",
    "org.testng.internal.samples.classhelper.misamples.MickJaggerSample.dance"]
	at org.testng.internal.ClassHelperTest.testWithDefaultMethodsBeingOverridden(ClassHelperTest.kt:109)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:141)
	at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:687)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:230)
	at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:63)
	at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:995)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:203)
	at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:154)
	at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:134)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
	at org.testng.TestRunner.privateRun(TestRunner.java:741)
	at org.testng.TestRunner.run(TestRunner.java:616)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:421)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:413)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:373)
	at org.testng.SuiteRunner.run(SuiteRunner.java:312)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1274)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1208)
	at org.testng.TestNG.runSuites(TestNG.java:1112)
	at org.testng.TestNG.run(TestNG.java:1079)
	at org.testng.TestNG.privateMain(TestNG.java:1430)
	at org.testng.TestNG.main(TestNG.java:1394)

FAILED: org.testng.internal.ClassHelperTest.testWithDefaultMethodsBeingOverridden(class org.testng.internal.samples.classhelper.misamples.JohnTravoltaMovesSample, 2, [org.testng.internal.samples.classhelper.misamples.JohnTravoltaMovesSample.walk, org.testng.internal.samples.classhelper.misamples.AbstractMovesSample.dance])
java.lang.AssertionError: 
Expected size: 2 but was: 3 in:
["org.testng.internal.samples.classhelper.misamples.IDance.access$dance$jd",
    "org.testng.internal.samples.classhelper.misamples.JohnTravoltaMovesSample.walk",
    "org.testng.internal.samples.classhelper.misamples.AbstractMovesSample.dance"]
	at org.testng.internal.ClassHelperTest.testWithDefaultMethodsBeingOverridden(ClassHelperTest.kt:109)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:141)
	at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:687)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:230)
	at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:63)
	at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:995)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:203)
	at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:154)
	at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:134)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
	at org.testng.TestRunner.privateRun(TestRunner.java:741)
	at org.testng.TestRunner.run(TestRunner.java:616)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:421)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:413)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:373)
	at org.testng.SuiteRunner.run(SuiteRunner.java:312)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1274)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1208)
	at org.testng.TestNG.runSuites(TestNG.java:1112)
	at org.testng.TestNG.run(TestNG.java:1079)
	at org.testng.TestNG.privateMain(TestNG.java:1430)
	at org.testng.TestNG.main(TestNG.java:1394)

--- a/testng-core/src/test/kotlin/org/testng/internal/ClassHelperTest.kt
+++ b/testng-core/src/test/kotlin/org/testng/internal/ClassHelperTest.kt
@@ -98,7 +98,7 @@ class ClassHelperTest {
             .isNull()
     }
 
-    @Test(dataProvider = "data")
+    @Test(enabled = false)
     fun testWithDefaultMethodsBeingOverridden(
         cls: KClass<*>, expectedCount: Int, vararg expected: String
     ) {