public void TestGetPackages()
        {
            repositoryOne.AddPackage(Helper.MockPackage("foo", "1.0"));
            repositoryTwo.AddPackage(Helper.MockPackage("bar", "1.0"));

            var packages = repositoryComposite.GetPackages();

            Assert.AreEqual(2, packages.Length);
            Assert.AreEqual("foo", packages[0].GetName());
            Assert.AreEqual("1.0", packages[0].GetVersionPretty());
            Assert.AreEqual("bar", packages[1].GetName());
            Assert.AreEqual("1.0", packages[1].GetVersionPretty());
        }