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Code Samples for WireMock.Net Walkthrough
using System;
using System.Net;
using RestSharp;
using Newtonsoft.Json;
namespace WireMockSample
{
public class SimpleServiceCaller
{
private readonly string _baseUrl;
public SimpleServiceCaller(string baseUrl){
_baseUrl = baseUrl;
}
public SimpleLoginResponse DoSimpleLogin(string userName)
{
var client = new RestClient(_baseUrl);
var request = new RestRequest("/player/startSession", Method.POST);
request.RequestFormat = DataFormat.Json;
request.AddBody(new SimpleLoginRequest
{
userName = userName
});
var response = (RestResponse)client.Execute(request);
SimpleLoginResponse loginResponse = null;
if (response.IsSuccessful)
{
loginResponse = JsonConvert.DeserializeObject<SimpleLoginResponse>(response.Content);
}
else
{
if (response.StatusCode.Equals(HttpStatusCode.Forbidden))
{
loginResponse = new SimpleLoginResponse
{
error = "Forbidden User"
};
}
}
return loginResponse;
}
}
public class SimpleLoginRequest
{
public string userName;
}
public class SimpleLoginResponse
{
public int id;
public string userName;
public string error;
}
}
using System;
using System.Linq;
using System.Net;
using NUnit.Framework;
using WireMock.Matchers;
using WireMock.Server;
using WireMock.RequestBuilders;
using WireMock.ResponseBuilders;
namespace WireMockSample
{
[TestFixture]
public class SimpleServiceCallerTest
{
private static FluentMockServer _mockServer;
private static SimpleServiceCaller _simpleCaller;
private static bool _isStarted;
// Because my environment is setup for Unity development,
// I don't have the latest nunit.framework available with
// [TestFixtureSetup], but that would be where the initial
// server startup would go in a more up-to-date environment
[SetUp]
public void SetUpWireMock()
{
if (!_isStarted)
{
_mockServer = FluentMockServer.Start();
// WireMock selects its own ports, so just grab the first
// generated URL string
_simpleCaller = new SimpleServiceCaller(_mockServer.Urls.First());
_isStarted = true;
}
}
private static void StubLogin(string testUser, int expectedId)
{
var canned = new SimpleLoginResponse
{
userName = testUser,
id = expectedId
};
_mockServer
.Given(Request
.Create().WithPath("/player/startSession")
// The canned response will *only* be sent to the
// request with the corresponding userName
.WithBody(new JsonMatcher("{ \"userName\": \"" + testUser + "\" }"))
.UsingPost())
.RespondWith(
Response.Create()
.WithStatusCode(200)
.WithHeader("Content-Type", "application/json")
.WithBodyAsJson(canned)
);
}
[Test]
[Ignore("only works on my machine")]
/*
* This will only work if you happen to
* have a version of the target service
* running at localhost port 8787
*/
public void TestSimpleLogin()
{
var caller = new SimpleServiceCaller("http://localhost:8787");
var userId = Guid.NewGuid().ToString().Replace("-", "");
var response = caller.DoSimpleLogin(userId);
Assert.AreEqual(userId, response.userName);
}
[Test]
/*
* This will work anytime, anywhere!
*/
public void TestSimpleLoginWireMock()
{
var userId = Guid.NewGuid().ToString();
StubLogin(userId, 42);
var response = _simpleCaller.DoSimpleLogin(userId);
Assert.AreEqual(userId, response.userName);
// predictable id!
Assert.AreEqual(42, response.id);
}
[Test]
/*
* The mock service can handle multiple requests in one instance
* and can give different answers depending on the request
*/
public void TestSimpleLoginWireMockMultiple()
{
var rand = new Random();
for (var i = 1; i <= 5; i++)
{
var user = "testUser" + i;
StubLogin(user, i*33);
}
for (var x = 0; x < 10; x++)
{
var testNum = rand.Next() % 5;
var testUser = "testUser" + (testNum + 1);
var response = _simpleCaller.DoSimpleLogin(testUser);
//check that userId is matched with expected response id
Assert.AreEqual(testUser, response.userName);
Assert.AreEqual((testNum+1)*33, response.id);
}
}
[Test]
/*
* Mocking error conditions is simple
*/
public void TestLoginFailureWireMock()
{
// Note that because the failure is tied to a specific userName,
// the other tests will still function properly
_mockServer
.Given(Request
.Create().WithPath("/player/startSession")
// The canned response will *only* be sent to the
// request with the corresponding userName
.WithBody(new JsonMatcher("{ \"userName\": \"BADWOLF\" }"))
.UsingPost())
.RespondWith(
Response.Create()
.WithStatusCode(HttpStatusCode.Forbidden)
);
var response = _simpleCaller.DoSimpleLogin("BADWOLF");
Assert.AreEqual("Forbidden User", response.error);
}
}
}
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