lynMarkdigRenderTest20 1.0.0

TestBase gives you a flying start with

• fluent assertions that are easy to extend
• sharp error messages
• tools to help you test with “heavyweight” dependencies on
  • AspNet.Mvc & AspNetCore.Mvc Contexts
  • HttpClient
  • Ado.Net
  • Streams & Logging

Chainable fluent assertions get you to the point concisely:

UnitUnderTest.Action()
  .ShouldNotBeNull()
  .ShouldEqualByValueExceptFor(new {Id=1, Descr=expected}, ignoreList )
  .Payload
    .ShouldMatchIgnoringCase("I expected this")
	.Should(someOtherPredicate);
	.Items
      .ShouldAll(predicate)
	  .ShouldContain(item)
	  .ShouldNotContain(predicate)
	  .Where(predicate)
	  .SingleOrAssertFail()

.ShouldEqualByValue().ShouldEqualByValueExceptFor(...) 
  work with all kinds of object and collections, and report what differed.
string.ShouldMatch(pattern).ShouldNotMatch().ShouldBeEmpty().ShouldNotBeEmpty()
.ShouldNotBeNullOrEmptyOrWhiteSpace().ShouldEqualIgnoringCase()
.ShouldContain().ShouldStartWith().ShouldEndWith().ShouldBeContainedIn(), ...
numeric.ShouldBeBetween().ShouldEqualWithTolerance()....GreaterThan....LessThan...GreaterOrEqualTo ...
ienumerable.ShouldAll().ShouldContain().ShouldNotContain().ShouldBeEmpty().ShouldNotBeEmpty() ...
stream.ShouldHaveSameStreamContentAs().ShouldContain()
value.ShouldBe().ShouldNotBe().ShouldBeOfType().ShouldBeAssignableTo()...

TestBase.HttpClient.Fake

[Test]
public async Task Should_MatchTheRightExpectationAndReturnTheSetupResponse__GivenMultipleSetups()
{
  var httpClient = new FakeHttpClient()
    .Setup(x=>x.Method==HttpMethod.Put).Returns(new HttpResponseMessage(HttpStatusCode.Accepted))
    .Setup(x=>x.RequestUri.PathAndQuery.StartsWith("/this")).Returns(thisResponse)
    .Setup(x=>x.RequestUri.PathAndQuery.StartsWith("/that")).Returns(thatResponse)
    .Setup(x=>x.RequestUri.PathAndQuery.StartsWith("/forbidden")).Returns(new HttpResponseMessage(HttpStatusCode.Forbidden));

  (await httpClient.GetAsync("http://localhost/that")).ShouldEqualByValue(thatResponse);
  (await httpClient.GetAsync("http://localhost/forbidden")).StatusCode.ShouldBe(HttpStatusCode.Forbidden);

  httpClient.Verify(x=>x.Method==HttpMethod.Put);
  httClient.VerifyAll();     
}

TestBase.FakeDb

Works with Ado.Net

- fakeDbConnection.SetupForQuery(IEnumerable<TFakeData>; )
- fakeDbConnection.SetupForQuery(IEnumerable<Tuple<TFakeDataForTable1,TFakeDataForTable2>> )
- fakeDbConnection.SetupForQuery(fakeData, new[] {"FieldName1", FieldName2"})
- fakeDbConnection.SetupForExecuteNonQuery(rowsAffected)
- fakeDbConnection.ShouldHaveUpdated("tableName", [Optional] fieldList, whereClauseField)
- fakeDbConnection.ShouldHaveSelected("tableName", [Optional] fieldList, whereClauseField)
- fakeDbConnection.ShouldHaveUpdated("tableName", [Optional] fieldList, whereClauseField)
- fakeDbConnection.ShouldHaveDeleted("tableName", whereClauseField)
- fakeDbConnection.ShouldHaveInvoked(cmd => predicate(cmd))
- fakeDbConnection.ShouldHaveXXX().ShouldHaveParameter("name", value)
- fakeDbConnection.Verify(x=>x.CommandText.Matches("Insert [case] .*") && x.Parameters["id"].Value==1)

TestBase.RecordingDb

• new RecordingDbConnection(IDbConnection) helps you profile Ado.Net Db calls

TestBase.Mvc.AspNetCore & TestBase.Mvc

ControllerUnderTest.Action()
  .ShouldbeViewResult()
  .ShouldHaveModel<TModel>()
  .ShouldEqualByValue(expected)
ControllerUnderTest.Action()
  .ShouldBeRedirectToRouteResult()
  .ShouldHaveRouteValue("expectedKey", [Optional] "expectedValue");

ShouldHaveViewDataContaining(), ShouldBeJsonResult() etc.

Quickly test AspNetCore controllers with zero setup, even with Action dependencies on HttpContext, Request, Response, ViewData, UrlHelper using controllerUnderTest.WithControllerContext() :

[TestFixture]
public class WhenTestingControllersUsingFakeControllerContext
{
    [Test]
    public void ShouldBeViewWithModel_ShouldAssertViewResultAndNameAndModel_And_UrlHelper_ShouldWork()
    {
        var controllerUnderTest = 
            new AController()
                .WithControllerContext();

        var result= controllerUnderTest
                .Action("SomeController","SomeAction",other:1)
                .ShouldBeViewWithModel<AClass>("ViewName");
                    .FooterLink
                    .ShouldBe("/Controller/Action?other=1");
    }
}

... Or test against complex application dependencies using HostedMvcTestFixtureBase and specify your Startup class:

[TestFixture]
public class WhenTestingControllersUsingAspNetCoreTestTestServer : HostedMvcTestFixtureBase
{

    [TestCase("/dummy/action?id={id}")]
    public async Task Get_Should_ReturnActionResult(string url)
    {
        var id=Guid.NewGuid();
        var httpClient=GivenClientForRunningServer<Startup>();
        GivenRequestHeaders(httpClient, "CustomHeader", "HeaderValue1");
            
        var result= await httpClient.GetAsync(url.Formatz(new {id}));

        result
            .ShouldBe_200Ok()
            .Content.ReadAsStringAsync().Result
            .ShouldBe("Content");
    }

    [TestCase("/dummy")]
    public async Task Put_Should_ReturnA(string url)
    {
        var something= new Fixture().Create<Something>();
        var jsonBody= new StringContent(something.ToJSon(), Encoding.UTF8, "application/json");
        var httpClient=GivenClientForRunningServer<Startup>();
        GivenRequestHeaders(httpClient, "CustomHeader", "HeaderValue1");

        var result = await httpClient.PutAsync(url, jsonBody);

        result.ShouldBe_202Accepted();
        DummyController.Putted.ShouldEqualByValue( something );
    }
}

TestBase.Mvc for Mvc4 and Mvc 5

Use the Controller.WithHttpContextAndRoutes() extension methods to fake the http request & context. And, by injecting the RegisterRoutes method of your MvcApplication, you can use and test Controller.Url with your application's configured routes.

ControllerUnderTest
  .WithHttpContextAndRoutes(
    [Optional] Action<RouteCollection> mvcApplicationRoutesRegistration, 
    [optional] string requestUrl,
    [Optional] string query = "",
    [Optional] string appVirtualPath = "/",
    [Optional] HttpApplication applicationInstance)

ApiControllerUnderTest.WithWebApiHttpContext<T>(
    HttpMethod httpMethod, 
    [Optional] string requestUri,
    [Optional] string routeTemplate)

Testable Logging with StringListLogger

Extensions.Logging.ListOfString for Microsoft.Extensions.Logging.Abstractions:

var logger= new LoggerFactory.AddProvider(new StringListLoggerProvider()).CreateLogger("Test1");
// or
var loggedLines = new List<string>();
var logger= new LoggerFactory().AddStringListLogger(loggedLines).CreateLogger("Test2");

 ... ;
StringListLogger.Instance
	.LoggedLines
	.ShouldContain(x=>x.Matches("kilroy was here"));

Serilog.Sinks.ListOfString for Serilog:

var loglines= new List<String>();
var logger=new LoggerConfiguration().WriteTo.StringList(loglines).CreateLogger();
... ;
logLines.ShouldContain(x=>x.Matches("kilroy was here"));

PDFs

TestBase.Pdf.DocumentWithLineOfText(myLineOfText) gives you a small but well-formed PDF document to play with. (taken from https://www.cafe-encounter.net/p521/a-very-small-editable-pdf-for-testing)

• Mix and match with your favourite test runners and assertions
• Building on Mono : define compile symbol NoMSTest to remove dependency on Microsoft.VisualStudio.QualityTools.UnitTestFramework