8003280: Add lambda tests

Turn on lambda expression, method reference and default method support

Reviewed-by: jjg

langtools/test/tools/javac/lambda/MostSpecific06.java

@@ -0,0 +1,30 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *  most specific resolution crashes on stuck lambdas
+ * @compile/fail/ref=MostSpecific06.out -XDrawDiagnostics MostSpecific06.java
+ */
+import java.util.*;
+
+class MostSpecific06 {
+
+    interface Predicate<X> {
+        boolean accept(X x);
+    }
+
+    interface ExtPredicate<X> extends Predicate<X> { }
+
+
+
+    void test(boolean cond, ArrayList<String> als) {
+        m(u -> true, als, als);
+        m((u -> true), als, als);
+        m(cond ? u -> true : u -> false, als, als);
+    }
+
+    <U> U m(Predicate<U> p, List<U> lu, ArrayList<U> au) { return null; }
+
+
+    <U> U m(ExtPredicate<U> ep, ArrayList<U> au, List<U> lu) { return null; }
+}