blob: 0ac21c2a79dd006bbcbe07e27cf3d995bad725c5 (
plain) (
tree)
|
|
Testing
=======
If you need a stub backend for use in tests instead of a "real" backend (you
probably don't want to make HTTP calls during unit tests), you can use the
``SttpBackendStub`` class. It allows specifying how the backend should respond
to requests matching given predicates.
A backend stub can be created using an instance of a "real" backend, or by
explicitly giving the response wrapper monad and supported streams type.
For example::
implicit val testingBackend = SttpBackendStub(HttpURLConnectionBackend())
.whenRequestMatches(_.uri.path.startsWith(List("a", "b")))
.thenRespond("Hello there!")
.whenRequestMatches(_.method == Method.POST)
.thenRespondServerError()
val response1 = sttp.get(uri"http://example.org/a/b/c").send()
// response1.body will be Right("Hello there")
val response2 = sttp.post(uri"http://example.org/d/e").send()
// response2.code will be 500
However, this approach has one caveat: the responses are not type-safe. That
is, the backend cannot match on or verify that the type included in the
response matches the response type requested.
It is also possible to create a stub backend which delegates calls to another
(possibly "real") backend if none of the specified predicates match a request.
This can be useful during development, to partially stub a yet incomplete
API with which we integrate::
implicit val testingBackend = SttpBackendStub.withFallback(HttpURLConnectionBackend())
.whenRequestMatches(_.uri.path.startsWith(List("a")))
.thenRespond("I'm a STUB!")
val response1 = sttp.get(uri"http://api.internal/a").send()
// response1.body will be Right("I'm a STUB")
val response2 = sttp.post(uri"http://api.internal/b").send()
// response2 will be whatever a "real" network call to api.internal/b returns
|