1 files changed, 30 insertions, 0 deletions
diff --git a/test/unit/app/nodeify-test.js b/test/unit/app/nodeify-test.js
new file mode 100644
index 000000000..901603c8b
--- /dev/null
+++ b/test/unit/app/nodeify-test.js
@@ -0,0 +1,30 @@
+const assert = require('assert')
+const nodeify = require('../../../app/scripts/lib/nodeify')
+
+describe('nodeify', function () {
+  var obj = {
+    foo: 'bar',
+    promiseFunc: function (a) {
+      var solution = this.foo + a
+      return Promise.resolve(solution)
+    },
+  }
+
+  it('should retain original context', function (done) {
+    var nodified = nodeify(obj.promiseFunc, obj)
+    nodified('baz', function (err, res) {
+      assert.equal(res, 'barbaz')
+      done()
+    })
+  })
+
+  it('should allow the last argument to not be a function', function (done) {
+    const nodified = nodeify(obj.promiseFunc, obj)
+    try {
+      nodified('baz')
+      done()
+    } catch (err) {
+      done(new Error('should not have thrown if the last argument is not a function'))
+    }
+  })
+})