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

node_modules/@sinonjs/samsam/lib/is-arguments.js

@@ -0,0 +1,35 @@
+"use strict";
+
+var getClass = require("./get-class");
+
+/**
+ * @name samsam.isArguments
+ * @param Object object
+ *
+ * Returns ``true`` if ``object`` is an ``arguments`` object,
+ * ``false`` otherwise.
+ */
+function isArguments(object) {
+    if (getClass(object) === "Arguments") {
+        return true;
+    }
+    if (
+        typeof object !== "object" ||
+        typeof object.length !== "number" ||
+        getClass(object) === "Array"
+    ) {
+        return false;
+    }
+    if (typeof object.callee === "function") {
+        return true;
+    }
+    try {
+        object[object.length] = 6;
+        delete object[object.length];
+    } catch (e) {
+        return true;
+    }
+    return false;
+}
+
+module.exports = isArguments;