From a114fd4f24a9b20db8e38afed5ee95aa8a77c1d7 Mon Sep 17 00:00:00 2001
From: "Ilya.Kazakevich" <Ilya.Kazakevich@jetbrains.com>
Date: Mon, 4 Jun 2018 20:49:42 +0300
Subject: [PATCH] Test fix (nullability fixed)

---
 python/testSrc/com/jetbrains/python/fixtures/PyTestCase.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/python/testSrc/com/jetbrains/python/fixtures/PyTestCase.java b/python/testSrc/com/jetbrains/python/fixtures/PyTestCase.java
index a2c3e4af757e..049b56402e65 100644
--- a/python/testSrc/com/jetbrains/python/fixtures/PyTestCase.java
+++ b/python/testSrc/com/jetbrains/python/fixtures/PyTestCase.java
@@ -188,11 +188,13 @@ public abstract class PyTestCase extends UsefulTestCase {
     return ourPyDescriptor;
   }
 
+  @Nullable
   protected PsiReference findReferenceBySignature(final String signature) {
     int pos = findPosBySignature(signature);
     return findReferenceAt(pos);
   }
 
+  @Nullable
   protected PsiReference findReferenceAt(int pos) {
     return myFixture.getFile().findReferenceAt(pos);
   }