From b798438ecdb0f06e1607ecaa653c387203b71a20 Mon Sep 17 00:00:00 2001
From: Michal Kordas <kontakt@michalkordas.com>
Date: Wed, 15 Apr 2015 19:02:38 +0200
Subject: [PATCH] Add test for non existing cache file, issue #921

---
 .../com/puppycrawl/tools/checkstyle/TreeWalkerTest.java   | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/TreeWalkerTest.java b/src/test/java/com/puppycrawl/tools/checkstyle/TreeWalkerTest.java
index 8da1bc182..83b4fe06b 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/TreeWalkerTest.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/TreeWalkerTest.java
@@ -130,4 +130,12 @@ public class TreeWalkerTest extends BaseCheckTestSupport
         treeWalker.setTabWidth(1);
         treeWalker.setCacheFile(temporaryFolder.newFile().getPath());
     }
+
+    @Test
+    public void testNonExistingCacheFileDoesNotThrowException()
+    {
+        final TreeWalker treeWalker = new TreeWalker();
+        treeWalker.setCacheFile("/invalid");
+        treeWalker.destroy();
+    }
 }