Add sinon.js

spec/specs.html

@@ -15,6 +15,8 @@
   </script>
 
   <script type="text/javascript" src="vendor/chai-1.3.0.js"></script>
+  <script type="text/javascript" src="vendor/sinon-1.5.0.js"></script>
+  <script type="text/javascript" src="vendor/sinon-chai-2.1.2.js"></script>
   <script>
     should = chai.should();
   </script>

spec/vendor/sinon-chai-2.1.2.js

@@ -0,0 +1,95 @@
+(function (sinonChai) {
+    "use strict";
+
+    // Module systems magic dance.
+
+    if (typeof require === "function" && typeof exports === "object" && typeof module === "object") {
+        // NodeJS
+        module.exports = sinonChai;
+    } else if (typeof define === "function" && define.amd) {
+        // AMD
+        define(function () {
+            return sinonChai;
+        });
+    } else {
+        // Other environment (usually <script> tag): plug in to global chai instance directly.
+        chai.use(sinonChai);
+    }
+}(function sinonChai(chai, utils) {
+    "use strict";
+
+    var slice = Array.prototype.slice;
+
+    function isSpy(putativeSpy) {
+        return typeof putativeSpy === "function" &&
+               typeof putativeSpy.getCall === "function" &&
+               typeof putativeSpy.calledWithExactly === "function";
+    }
+
+    function isCall(putativeCall) {
+        return putativeCall && isSpy(putativeCall.proxy);
+    }
+
+    function assertCanWorkWith(assertion) {
+        if (!isSpy(assertion._obj) && !isCall(assertion._obj)) {
+            throw new TypeError(utils.inspect(assertion._obj) + " is not a spy or a call to a spy!");
+        }
+    }
+
+    function getMessages(spy, action, nonNegatedSuffix, always, args) {
+        var verbPhrase = always ? "always have " : "have ";
+        nonNegatedSuffix = nonNegatedSuffix || "";
+        spy = spy.proxy || spy;
+
+        function printfArray(array) {
+            return spy.printf.apply(spy, array);
+        }
+
+        return {
+            affirmative: printfArray(["expected %n to " + verbPhrase + action + nonNegatedSuffix].concat(args)),
+            negative: printfArray(["expected %n to not " + verbPhrase + action].concat(args))
+        };
+    }
+
+    function sinonProperty(name, action, nonNegatedSuffix) {
+        utils.addProperty(chai.Assertion.prototype, name, function () {
+            assertCanWorkWith(this);
+
+            var messages = getMessages(this._obj, action, nonNegatedSuffix, false);
+            this.assert(this._obj[name], messages.affirmative, messages.negative);
+        });
+    }
+
+    function exceptionalSinonMethod(chaiName, sinonName, action, nonNegatedSuffix) {
+        utils.addMethod(chai.Assertion.prototype, chaiName, function () {
+            assertCanWorkWith(this);
+
+            var alwaysSinonMethod = "always" + sinonName[0].toUpperCase() + sinonName.substring(1);
+            var shouldBeAlways = utils.flag(this, "always") && typeof this._obj[alwaysSinonMethod] === "function";
+            var sinonMethod = shouldBeAlways ? alwaysSinonMethod : sinonName;
+
+            var messages = getMessages(this._obj, action, nonNegatedSuffix, shouldBeAlways, slice.call(arguments));
+            this.assert(this._obj[sinonMethod].apply(this._obj, arguments), messages.affirmative, messages.negative);
+        });
+    }
+
+    function sinonMethod(name, action, nonNegatedSuffix) {
+        exceptionalSinonMethod(name, name, action, nonNegatedSuffix);
+    }
+
+    utils.addProperty(chai.Assertion.prototype, "always", function () {
+        utils.flag(this, "always", true);
+    });
+
+    sinonProperty("called", "been called", " at least once, but it was never called");
+    sinonProperty("calledOnce", "been called exactly once", ", but it was called %c%C");
+    sinonProperty("calledTwice", "been called exactly twice", ", but it was called %c%C");
+    sinonProperty("calledThrice", "been called exactly thrice", ", but it was called %c%C");
+    sinonMethod("calledBefore", "been called before %1");
+    sinonMethod("calledAfter", "been called after %1");
+    sinonMethod("calledOn", "been called with %1 as this", ", but it was called with %t instead");
+    sinonMethod("calledWith", "been called with arguments %*", "%C");
+    sinonMethod("calledWithExactly", "been called with exact arguments %*", "%C");
+    sinonMethod("returned", "returned %1");
+    exceptionalSinonMethod("thrown", "threw", "thrown %1");
+}));