Allow RouteParamAttribute on method

[vincentparrett]

This allows you to document parameters even when there are no parameters at all on the handler method at all. This is needed when using only query parameters, since they don't appear on the args object you would typically extract them from the Request object inside your handler method.

This change also allows RouteParamAttribute descendants to be used - passing true to GetCustomAttributes - should not have any negative impact.

Introduces RouteParamAttribute.ParamType property to allow overrideing the param type.

[yahehe]

Would it be possible to get some tests for this?

[vincentparrett]

I have no idea how I would write tests for this? There doesn't appear to be any existing tests for the annotations stuff to use as an example.

[yahehe]

Yeah unfortunately our test coverage is extremely sparse, which is why I'd like to make as many tiny steps towards that goal as possible. There are no annotations tests it looks like but you could look at other tests in the solution like https://github.com/yahehe/Nancy.Swagger/blob/master/test/Nancy.Swagger.Tests/SwaggerSchemaFactoryTests.cs to see some examples. Just a couple tests validating the functionality of this change?

[vincentparrett]

I'm still none the wiser on how to go about testing routeparams.

[jnallard]

@yahehe I agree that we need tests, but I think it's unfair to hold that standard on @vincentparrett, because we didn't bother getting the tests started first.

[yahehe]

That's fine

[jnallard]

This resolves #155, by the way.

[vincentparrett]

Any chance you could update nuget with this PR? I can't build my project on our CI server at the moment as I don't want to check in project references.

[yahehe]

Hmm looks like the CI is failing, checking it out now

[yahehe]

2.2.51-alpha

[vincentparrett]

Thanks.