aspnetcore integration test - middleware

middleware.cs

public class AuthenticatedTestRequestMiddleware
{
    public const string TestingCookieAuthentication = "TestCookieAuthentication";
    public const string TestingHeader = "X-Integration-Testing";
    public const string TestingHeaderValue = "abcde-12345";

    private readonly RequestDelegate _next;

    public AuthenticatedTestRequestMiddleware(RequestDelegate next)
    {
	    _next = next;
    }

    public async Task Invoke(HttpContext context)
    {
	    if (context.Request.Headers.Keys.Contains(TestingHeader) &&
            context.Request.Headers[TestingHeader].First().Equals(TestingHeaderValue))
	    {
		    if (context.Request.Headers.Keys.Contains("my-name"))
		    {
			    var name = 
				    context.Request.Headers["my-name"].First();
			    var id =
				    context.Request.Headers.Keys.Contains("my-id")
					    ? context.Request.Headers["my-id"].First() : "";
			    ClaimsIdentity claimsIdentity = new ClaimsIdentity(new List<Claim>
			    {
				    new Claim(ClaimTypes.Name, name),
				    new Claim(ClaimTypes.NameIdentifier, id),
			    }, TestingCookieAuthentication);
			    ClaimsPrincipal claimsPrincipal = new ClaimsPrincipal(claimsIdentity);
			    context.User = claimsPrincipal;
		    }
	    }

	    await _next(context);
    }
}