8003280: Add lambda tests

Turn on lambda expression, method reference and default method support

Reviewed-by: jjg

langtools/test/tools/javac/lambda/funcInterfaces/LambdaTest1_neg1.java

@@ -0,0 +1,15 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 8003280
+ * @summary Add lambda tests
+ *   This test is to verify invalid lambda expressions
+ * @compile/fail/ref=LambdaTest1_neg1.out -XDrawDiagnostics LambdaTest1_neg1.java
+ */
+
+import java.util.Comparator;
+
+public class LambdaTest1_neg1 {
+    void method() {
+        Comparator<Number> c = (Number n1, Number n2) -> { 42; } //compile error, not a statement
+    }
+}