From d21c0783633680be1ddbc2d73db52e094ab3fa02 Mon Sep 17 00:00:00 2001
From: Benjamin Lichtman <belichtm@microsoft.com>
Date: Wed, 15 Aug 2018 16:19:54 -0700
Subject: [PATCH] Test for existence of diagnostic when running tests

---
 src/testRunner/unittests/convertToAsyncFunction.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/testRunner/unittests/convertToAsyncFunction.ts b/src/testRunner/unittests/convertToAsyncFunction.ts
index f39b8080ed..f3bdc889c3 100644
--- a/src/testRunner/unittests/convertToAsyncFunction.ts
+++ b/src/testRunner/unittests/convertToAsyncFunction.ts
@@ -362,11 +362,11 @@ interface Array<T> {}`
 
             const diagnostics = languageService.getSuggestionDiagnostics(f.path);
             const diagnostic = find(diagnostics, diagnostic => diagnostic.messageText === description.message);
-            assert.isNotNull(diagnostic);
+            assert.exists(diagnostic);
 
             const actions = codefix.getFixes(context);
             const action = find(actions, action => action.description === description.message)!;
-            assert.isNotNull(action);
+            assert.exists(action);
 
             const data: string[] = [];
             data.push(`// ==ORIGINAL==`);