How do you test for optional parameters?

[danbadge]

We've got an optional parameter and we're testing that the route can still be found when the parameter is not passed. Our example controller and test is below, the route works when you make a proper http request but the test fails with the following error: MvcRouteTester.Assertions.AssertionException : Expected '', got missing value for 'shopId' at url '/track/1/format/17/price'.

Here's our controller:

[RoutePrefix("track")]
public class TrackPriceController : ApiController
{
    [Route("{trackId}/format/{formatId}/price")]
    public ErrorResponse Get(int trackId, int formatId, int? shopId = null)
    {
        // something
    }
}

And here's our tests:

    [SetUp]
    public void SetUp()
    {
        _config = new HttpConfiguration();
        _config.MapHttpAttributeRoutes();
        _config.EnsureInitialized();
    }

    // failing test
    [Test]
    public void Should_find_track_route_without_shopId()
    {
        _config.ShouldMap("/track/1/format/17/price")
            .To<TrackPriceController>(HttpMethod.Get, x => x.Get(1, 17, null));
    }

    // passing test
    [Test]
    public void Should_have_track_route()
    {
        _config.ShouldMap("/track/1/format/17/price?shopId=34")
            .To<TrackPriceController>(HttpMethod.Get, x => x.Get(1, 17, 34));
    }

[alexjamesbrown]

I had this earlier, but for a bool value... I worked around it by specifying the value (not what you want to do here)

@AnthonySteele can probably advise if this is supported

[AnthonySteele]

Verified, working on it. https://github.com/AnthonySteele/MvcRouteTester/commit/09c6fc9eee6fef959598a67162ea82573ea6c869

[AnthonySteele]

It may be fixed now. Can you try the latest code? If not, I'll package it to nuget.