Loosen error message assertion when file not found

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/docx/files.tests.js b/tests/docx/files.tests.js
index 65cd486..9f5bb38 100644
--- a/tests/docx/files.tests.js
+++ b/tests/docx/files.tests.js
@@ -43,7 +43,7 @@ describe("Files", function() {
     test("error if relative uri cannot be opened", function() {
         var files = new Files("/tmp");
         return assertError(files.read("not-a-real-file.png", "base64"), function(err) {
-            assert.equal(err.message, "could not open external image: 'not-a-real-file.png' (document directory: '/tmp')\nENOENT, open '/tmp/not-a-real-file.png'");
+            assertRegex(err.message, /could not open external image: 'not-a-real-file.png' \(document directory: '\/tmp'\)\nENOENT,.*'\/tmp\/not-a-real-file.png'.*/);
         });
     });
 });
@@ -54,6 +54,10 @@ function assertError(promise, func) {
     }, func);
 }
 
+function assertRegex(actual, expected) {
+    assert.ok(expected.test(actual), "Expected regex: " + expected + "\nbut was: " + actual);
+}
+
 
 describe("uriToPath", function() {
     test("leading slash is retained on non-Windows file URIs", function() {