making an attempt to improve the test suite

test/queue-test.js

@@ -0,0 +1,35 @@
+var assert = require("assert");
+var Queue = require('../lib/queue');
+
+module.exports = function (tests, next) {
+  var q = new Queue();
+
+  tests.push = function () {
+    q.push('a');
+    q.push(3);
+    assert.equal(q.length, 2);
+    return next();
+  }
+
+  tests.shift = function () {
+    assert.equal(q.shift(), 'a');
+    return next();
+  }
+
+  tests.forEach = function () {
+    q.forEach(function (v) {
+      assert.equal(v, 3);
+    });
+
+    return next();
+  }
+
+  tests.forEachWithScope = function () {
+    q.forEach(function (v) {
+      assert.equal(this.foo, 'bar');
+      assert.equal(v, 3);
+    }, {foo: 'bar'});
+
+    return next();
+  }
+}