Add comprehensive tests for role middleware and fix package dependencies

node_modules/@sinonjs/samsam/lib/create-matcher/assert-matcher.js

@@ -0,0 +1,17 @@
+"use strict";
+
+var isMatcher = require("./is-matcher");
+
+/**
+ * Throws a TypeError when `value` is not a matcher
+ *
+ * @private
+ * @param {*} value The value to examine
+ */
+function assertMatcher(value) {
+    if (!isMatcher(value)) {
+        throw new TypeError("Matcher expected");
+    }
+}
+
+module.exports = assertMatcher;