added unit testing, and started implementing unit tests...phew

node_modules/one-time/test.js

@@ -0,0 +1,45 @@
+describe('one-time', function () {
+  'use strict';
+
+  var assume = require('assume')
+    , one = require('./');
+
+  it('is exported as a function', function () {
+    assume(one).is.a('function');
+  });
+
+  it('only calls the supplied function once', function (next) {
+    next = one(next);
+
+    next();
+    next();
+    next();
+    next();
+  });
+
+  it('returns the same value as the called function every single time', function () {
+    var foo = one(function () {
+      return 'bar';
+    });
+
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+    assume(foo()).equals('bar');
+  });
+
+  it('the returned function uses the same displayName as the given fn', function () {
+    var foo = one(function banana() {
+      return 'bar';
+    });
+
+    assume(foo.displayName).equals('banana');
+  });
+});