new inference: provide incomplete inference results for lambda (IDEA-162035; IDEA-155230)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/InferTypeParametersFromFunctionalInterfaceInputs.java

@@ -0,0 +1,21 @@
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Stream;
+
+class A {
+  {
+    run(A.class, this, (o) -> {
+      o.meth();
+    <error descr="Missing return statement">}</error>);
+
+
+    Map<Integer, Integer> map = Stream.iterate(5, <error descr="no instance(s) of type variable(s) T exist so that Stream<T> conforms to Map<Integer, Integer>">t -> t + 5</error>);
+  }
+
+
+  void meth() {}
+
+  <T> T run(Class<T> c, T t, Function<T, T> f) {
+    return f.apply(t);
+  }
+}