public void ReversingUrls()
{
ViewUrl url1 = new ViewUrl(@"^product/(?<category>\w+)/(\d+)/$", View1, "url1");
ViewUrl url2 = new ViewUrl(@"^product/(?<category>(?:[\w\s]+))/\((\d+)\)/(\w+)/$", View1, "url2");
ViewUrl url3 = new ViewUrl(@"^product/(?<category>\w+)/\d+/$", View1, "url3");
string revUrl1 = url1.Reverse("category=green", "1=7");
string revUrl2 = url2.Reverse("category=green and yellow", "1=7", "2=page");
Assert.Equal("/product/green/7/", revUrl1);
Assert.Equal("/product/green%20and%20yellow/(7)/page/", revUrl2);
Assert.Throws(typeof(Exception), () => {
// positional argument 1 = "page" is not permitted because it must be numeric
url2.Reverse("category=green", "1=page", "2=7");
});
Assert.Throws(typeof(Exception), () => {
// url3 is not reversible because \d+ at the end was not enclosed in a group and can not be resolved
url3.Reverse("category=green", "1=7");
});
}
