lambda: inference param types for assignment and cast context

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/LambdaExpressions.java

@@ -27,13 +27,13 @@ class C {
   }
 
   void test() {
-    Simplest simplest = <weak_warning descr="Lambda expressions type check is not yet implemented">() -> { }</weak_warning>;
+    Simplest simplest = () -> { };
     use(<weak_warning descr="Lambda expressions type check is not yet implemented">() -> { }</weak_warning>);
 
-    IntParser intParser = <weak_warning descr="Lambda expressions type check is not yet implemented">(String s) -> Integer.parseInt(s)</weak_warning>;
+    IntParser intParser = (String s) -> Integer.parseInt(s);
   }
 
   Runnable foo() {
-    return <weak_warning descr="Lambda expressions type check is not yet implemented">() -> { System.out.println("foo"); }</weak_warning>;
+    return () -> { System.out.println("foo"); };
   }
 }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/params/FormalParams.java

@@ -0,0 +1,12 @@
+interface I {
+  void m(int i);
+}
+
+class Foo {
+  I ii = (@<error descr="'@Override' not applicable to type use">Override</error> final int k)->{
+    int j = k;
+  };
+  I ii1 = (final int k)->{
+    <error descr="Incompatible types. Found: 'int', required: 'java.lang.String'">String s = k;</error>
+  };
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/params/InferredParams.java

@@ -0,0 +1,23 @@
+import java.lang.String;
+
+interface I {
+  void m(int i);
+}
+
+interface A<B> {
+  void foo(B b);
+}
+
+class Foo {
+  I ii = (final <error descr="Cannot resolve symbol 'k'">k</error><error descr="Identifier expected">)</error>->{};
+  I ii1 = (k)->{
+    int i = k;
+    <error descr="Incompatible types. Found: 'int', required: 'java.lang.String'">String s = k;</error>
+  };
+  
+  A<String> a = (ab) -> {
+    String s = ab;
+    <error descr="Incompatible types. Found: 'java.lang.String', required: 'int'">int i = ab;</error>
+  };
+}
+