"http://example.com:80/foo/bar?q=foo%20&bar=x+y#frag",
		},
		{" ", "%20"},
		{"%7c", "%7c"},
		{"%7C", "%7C"},
		{"%2", "%252"},
		{"%", "%25"},
		{"%z", "%25z"},
		{"/foo|bar/%5c\u1234", "/foo%7cbar/%5c%e1%88%b4"},
	}
	for _, test := range tests {
		if got := urlNormalizer(test.url); test.want != got {
			t.Errorf("%q: want\n\t%q\nbut got\n\t%q", test.url, test.want, got)
		}