1 files changed, 16 insertions, 3 deletions
diff --git a/test/assertions.js b/test/assertions.js
index 56da249..f96fdc1 100644
--- a/test/assertions.js
+++ b/test/assertions.js
@@ -1,18 +1,31 @@
 var fs = require('fs');
+var path = require('path');
 var _ = require('lodash');
 var cheerio = require('cheerio');
 var should = require('should');
 
 // Assertions to test if an Output has generated a file
 should.Assertion.add('file', function(file, description) {
+    var rootFolder;
+    if (_.isFunction(this.obj.root)) {
+        rootFolder = this.obj.root();
+    } else {
+        rootFolder = this.obj;
+    }
+
     this.params = {
-        actual: this.obj.root(),
+        actual: rootFolder,
         operator: 'have file ' + file,
         message: description
     };
 
-    this.obj.should.have.property('resolve').which.is.a.Function;
-    this.assert(fs.existsSync(this.obj.resolve(file)));
+    if (_.isFunction(this.obj.resolve)) {
+        file = this.obj.resolve(file);
+    } else {
+        file = path.resolve(rootFolder, file);
+    }
+
+    this.assert(fs.existsSync(file));
 });
 
 should.Assertion.add('html', function(rules, description) {