Few testng tests reside in lambda/jdk/combo_tests dir. Except BridgeMethodsLinearTest.java, rest of the tests need to be ported in 9 tl.
These tests are not getting ported in JDK8 time frame. Two reasons as per Brian,
(a) the combo test framework needs to be cleaned up and documented better before we can put it back, and (b) some of these tests have decayed and we would need to clean them up too.

Tests:
TEST-tools.javac.lambda.ConditionalExpressionTest
TEST-tools.javac.lambda.DefaultMethodAddTest
TEST-tools.javac.lambda.DefaultMethodRemoveTest
TEST-tools.javac.lambda.LambdaArgAdaptationTest
TEST-tools.javac.lambda.LambdaCaptureTest
TEST-tools.javac.lambda.LambdaConversionTest
TEST-tools.javac.lambda.LambdaExpressionTypeInferenceTest
TEST-tools.javac.lambda.LambdaReturnAdaptationTest
TEST-tools.javac.lambda.MethodRefCaptureTest
TEST-tools.javac.lambda.NestedGenericMethodCallTest
TEST-tools.javac.lambda.SourceTargetVersionTest
TEST-tools.javac.lambda.StaticMethodTest
TEST-tools.javac.lambda.NestedGenericMethodCallTest::test