lambda: initial is assignable check; effectively final; acceptable context

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/highlighting/LambdaContext.java

@@ -0,0 +1,18 @@
+interface I {
+    void m(int x);
+}
+
+class Test {
+    void foo(Object x) {}
+
+    void bar() {
+        foo(<error descr="Operator '!' cannot be applied to '<lambda expression>'">!(int x)-> {}</error>);
+        foo(<error descr="Lambda expression is not expected here">(int x)-> { } instanceof Object</error> );
+    }
+
+    I bazz() {
+        foo((I)(int x)-> { });
+        I o = (I)(int x)-> { };
+        return (int x) -> {};
+    }
+}