invoke scanOuterContext() also for lambdas (PY-2182)

python/src/com/jetbrains/python/psi/resolve/PyResolveUtil.java

@@ -162,7 +162,7 @@ public class PyResolveUtil {
     // if we're under a cap, an external object that we want to use might be also defined below us.
     // look through all contexts, closest first.
     PsiElement ret = null;
-    PsiElement our_cap = PsiTreeUtil.getParentOfType(start, PyFunction.class);
+    PsiElement our_cap = PsiTreeUtil.getParentOfType(start, Callable.class);
     if (our_cap != null) {
       PsiElement cap = our_cap;
       while (true) {

python/testData/resolve/LambdaToClass.py

@@ -0,0 +1,6 @@
+class TestOne():
+    x = lambda self: TestTwo()
+#                     <ref>
+
+class TestTwo():
+    pass

python/testSrc/com/jetbrains/python/PyResolveTest.java

@@ -48,7 +48,7 @@ public class PyResolveTest extends PyResolveTestCase {
 
   public void testToConstructorInherited() {
     ResolveResult[] targets = multiResolve();
-    assertEquals(targets.length, 2); // to class, to init
+    assertEquals(2, targets.length); // to class, to init
     PsiElement elt;
     // class
     elt = targets[0].getElement();
@@ -366,4 +366,8 @@ public class PyResolveTest extends PyResolveTestCase {
     final PyFunction pyFunction = assertResolvesTo(PyFunction.class, "eval");
     assertEquals("__builtin__.py", pyFunction.getContainingFile().getName());
   }
+
+  public void testLambdaToClass() {  // PY-2182
+    assertResolvesTo(PyClass.class, "TestTwo");
+  }
 }