diff --git a/test/obj-filter.js b/test/obj-filter.js
new file mode 100644
index 000000000..4dd79f128
--- /dev/null
+++ b/test/obj-filter.js
@@ -0,0 +1,16 @@
+'use strict'
+/* global describe, it */
+
+const objFilter = require('../lib/obj-filter')
+
+require('chai').should()
+
+describe('ObjFilter', () => {
+  it('returns a new reference to the original object if no filter function is given', () => {
+    const original = { foo: 'bar', baz: 'foo' }
+    const result = objFilter(original)
+
+    original.should.not.equal(result)
+    original.should.deep.equal(result)
+  })
+})