diff --git a/tests/spec/fs.open.spec.js b/tests/spec/fs.open.spec.js
index 819b1ba..241faf8 100644
--- a/tests/spec/fs.open.spec.js
+++ b/tests/spec/fs.open.spec.js
@@ -1,6 +1,7 @@
 var util = require('../lib/test-utils.js');
 var expect = require('chai').expect;
 var { FIRST_DESCRIPTOR } = require('../../src/constants.js');
+var Constants = require('../../src/constants.js');
 
 describe('fs.open', function() {
   beforeEach(util.setup);
@@ -33,6 +34,17 @@ describe('fs.open', function() {
     });
   });
 
+  it('should create a file when passed the flag as a bitwise number', function(done) {
+    var fs = util.fs();
+
+    fs.open('/myfile', Constants.fsConstants.O_CREAT, function(error, fd) {
+      expect(error).not.to.exist;
+      expect(fd).to.exist;
+      fs.close(fd);
+      done();
+    });
+  });
+
   it('should return an error when flagged for write and the path is a directory', function(done) {
     var fs = util.fs();