How to get RouteData by URL?

Question

I need to get `RoutData` by given URL string in ASP.NET MVC application. I've found the way that I need to mock `HttpContextBase` based on my URL string and then pass it to `RouteTable.Routes.GetRouteData()` method in Route Parsing (Uri to Route) thread. How to mock `HttpContextBase` to retrieve `RouteData` by URL string using `RouteTable.Routes.GetRouteData()`? Or is there another way to retrieve `RouteData` by URL?

Accepted Answer

I used Moq to determine what members of `HttpContextBase` are used in `GetRouteData()`. They are:

- Request

- AppRelativeCurrentExecutionFilePath

- PathInfo

`Request.AppRelativeCurrentExecutionFilePath` should return path with `~`, what I exactly need, so utility class may be like this one:

```
public static class RouteUtils
{
    public static RouteData GetRouteDataByUrl(string url)
    {
        return RouteTable.Routes.GetRouteData(new RewritedHttpContextBase(url));
    }

private class RewritedHttpContextBase : HttpContextBase
    {
        private readonly HttpRequestBase mockHttpRequestBase;

public RewritedHttpContextBase(string appRelativeUrl)
        {
            this.mockHttpRequestBase = new MockHttpRequestBase(appRelativeUrl);
        }

public override HttpRequestBase Request
        {
            get
            {
                return mockHttpRequestBase;
            }
        }

private class MockHttpRequestBase : HttpRequestBase
        {
            private readonly string appRelativeUrl;

public MockHttpRequestBase(string appRelativeUrl)
            {
                this.appRelativeUrl = appRelativeUrl;
            }

public override string AppRelativeCurrentExecutionFilePath
            {
                get { return appRelativeUrl; }
            }

public override string PathInfo
            {
                get { return ""; }
            }
        }
    }
}
```

Then, you can use it like this (for example on `~/Error/NotFound`):

```
var rd = RouteUtils.GetRouteDataByUrl("~/Error/NotFound")
```

Which should return an object that looks like this:

```
RouteData.Values
{
    controller = "Error",
    action = "NotFound"
}
```

How to get RouteData by URL?

Solution

Problem

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