In the previous post we looked at a very basic integration test with a TestServer setup. This in itself isn't very helpful as tests, both unit and integration, are used for testing your own application or library function.
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So how do we start up a test version of the application we want to test?
The below is all based on a
File > New
MVC Web Application in Visual Studio.This can also be done by running
dotnet new mvc
on the command line.Calling the Application Code
To do this we want to call the
Startup
class as the full application host builder does. This way all the service registrations etc. will be setup. To enable this we use the UseStartup
extension method on the webHost we are configuring.And that is the only change to the previous builder version. We still build and start the host in the same way.
And we access a
HttpClient
instance to call the service in the same way.The Test in Full
Let's take a look at the full integration test.
Blocs 3 1 1 3 What S Next
Typed 1 1 – stunning word processing with markdown. The end point in question returns a basic
ContentResult
to the caller from the default HomeController
.Conclusion
In this post we have looked at setting up a host for your application in a test. We have also shown how to call a basic end point in the integration test and check the Controller Action returns the expected value from your application.
Any questions/comments then please contact me on Twitter @WestDiscGolf
Other Posts In This Series
Part 1 - Integration Testing with ASP.NET Core 3.1
Part 2 - This post
Part 3 - Integration Testing with ASP.NET Core 3.1 - Swapping a dependency
Part 4 - Integration Testing with ASP.NET Core 3.1 - Remove the Boiler Plate
Part 5 - Integration Testing with ASP.NET Core 3.1 - Swapping a Dependency with Moq
A Dart package that makes testing blocs and cubits easy. Built to work with bloc and mockito.
Learn more at bloclibrary.dev!
Create a Mock #
Blocs 3 1 1 3 Sequence
Stub the State Stream #
whenListen creates a stub response for the
listen
method on a bloc or cubit. Use whenListen
if you want to return a canned Stream
of states. whenListen
also handles stubbing the state
to stay in sync with the emitted state.Unit Test with blocTest #
blocTest creates a new
cubit
-specific test case with the given description
. blocTest
will handle asserting that the cubit
emits the expect
ed states (in order) after act
is executed. blocTest
also handles ensuring that no additional states are emitted by closing the cubit
stream before evaluating the expect
ation.build
should be used for all cubit
initialization and preparation and must return the cubit
under test.act
is an optional callback which will be invoked with the cubit
under test and should be used to add
events to the cubit
.Blocs 3 1 1 3
skip
is an optional int
which can be used to skip any number of states and defaults to 0
.wait
is an optional Duration
which can be used to wait for async operations within the cubit
under test such as debounceTime
.expect
is an optional Iterable<State>
which the cubit
under test is expected to emit after act
is executed.verify
is an optional callback which is invoked after expect
and can be used for additional verification/assertions. verify
is called with the cubit
returned by build
.![Blocs 3 1 1 3 sequence Blocs 3 1 1 3 sequence](https://www.e-cardiogram.com/wp-content/uploads/2020/02/Bloc-AV-2-sur-1-ecg-taboulet-3-2.jpg)
errors
is an optional Iterable
of error matchers which the cubit
under test is expected to have thrown after act
is executed.blocTest
can also be used to skip
any number of emitted states before asserting against the expected states. The default value is 0.blocTest
can also be used to wait for async operations like debounceTime
by providing a Duration
to wait
.blocTest
can also be used to verify
Torchlight 1 15 – action role playing game. internal bloc functionality.Blocs 3 1 1 3
blocTest
can also be used to expect that exceptions have been thrown.Note: when using
blocTest
with state classes which don't override and hashCode
you can provide an Iterable
of matchers instead of explicit state instances.Dart Versions #
- Dart 2: >= 2.7.0