WebApi单元测试记录

一、MessageHandler不一定是全局的，也可以只应用到指定的Router上

1、定义一个handler
// Pipelines
HttpMessageHandler affiliateShipmentsPipeline =
HttpClientFactory.CreatePipeline(
new HttpControllerDispatcher(config),
new[] { new AffiliateShipmentsDispatcher() });

2、将handler应用在指定的router上
// Routes
routes.MapHttpRoute(
"AffiliateShipmentsHttpRoute",
"api/affiliates/{key}/shipments/{shipmentKey}",
defaults: new { controller = "AffiliateShipments", shipmentKey = RouteParameter.Optional },
constraints: new { key = new GuidRouteConstraint(), shipmentKey = new GuidRouteConstraint() },
handler: affiliateShipmentsPipeline);
 

二、HttpRequest头添加Authorization信息

HttpRequestMessage request = ConstructRequest(httpMethod, uri, mediaTypes);
request.Headers.Authorization = new AuthenticationHeaderValue(
"Basic",
EncodeToBase64(
string.Format("{0}:{1}", username, password)));

private static string EncodeToBase64(string value) {
byte[] toEncodeAsBytes = Encoding.UTF8.GetBytes(value);
return Convert.ToBase64String(toEncodeAsBytes);
}

三、模拟异步发送Http请求

internal static async Task<HttpResponseMessage> GetResponseAsync(
HttpConfiguration config, HttpRequestMessage request) {

using (var httpServer = new HttpServer(config))
using (var client = HttpClientFactory.Create(innerHandler: httpServer)) {

return await client.SendAsync(request);
}
}

四、模拟WebApi HttpRequestMessage的Content

request.Content = new ObjectContent<ShipmentRequestModel>(
shipmentRequestModel, new System.Net.Http.Formatting.JsonMediaTypeFormatter());

五、HttpRequestMessage对象获取依赖注入接口

internal static class HttpRequestMessageExtensions {

internal static IShipmentService GetShipmentService(this HttpRequestMessage request) {

return request.GetServic e<IShipmentService>();
}

internal static IMembershipService GetMembershipService(this HttpRequestMessage request) {

return request.GetService<IMembershipService>();
}

private static TService GetService<TService>(this HttpRequestMessage request) {

IDependencyScope dependencyScope = request.GetDependencyScope();
TService service = (TService)dependencyScope.GetService(typeof(TService));

return service;
}
}