Updated Scenarios and States (markdown)

Stef Heyenrath
2020-08-30 10:25:44 +02:00
parent 29f9a87361
commit 66db8d89b5

@@ -1,41 +1,41 @@
# Scenarios
# Using Scenarios
WireMock.Net supports state via the notion of scenarios. A scenario is essentially a state machine whose states can be arbitrarily assigned. Stub mappings can be configured to match on scenario state, such that stub A can be returned initially, then stub B once the next scenario state has been triggered.
WireMock.Net supports _State_ via the notion of _scenarios_. A scenario is essentially a state machine whose states can be arbitrarily assigned. Stub mappings can be configured to match on scenario state, such that stub A can be returned initially, then stub B once the next scenario state has been triggered.
For example, suppose were writing a to-do list application consisting of a rich client of some kind talking to a REST service. We want to test that our UI can read the to-do list, add an item and refresh itself, showing the updated list.
Example test code:
```c#
``` c#
// Assign
_server = WireMockServer.Start();
_server
.Given(Request.Create()
.WithPath("/todo/items")
.UsingGet())
.InScenario("To do list")
.WillSetStateTo("TodoList State Started")
.RespondWith(Response.Create()
.WithBody("Buy milk"));
.Given(Request.Create()
.WithPath("/todo/items")
.UsingGet())
.InScenario("To do list")
.WillSetStateTo("TodoList State Started")
.RespondWith(Response.Create()
.WithBody("Buy milk"));
_server
.Given(Request.Create()
.WithPath("/todo/items")
.UsingPost())
.InScenario("To do list")
.WhenStateIs("TodoList State Started")
.WillSetStateTo("Cancel newspaper item added")
.RespondWith(Response.Create()
.WithStatusCode(201));
.Given(Request.Create()
.WithPath("/todo/items")
.UsingPost())
.InScenario("To do list")
.WhenStateIs("TodoList State Started")
.WillSetStateTo("Cancel newspaper item added")
.RespondWith(Response.Create()
.WithStatusCode(201));
_server
.Given(Request.Create()
.WithPath("/todo/items")
.UsingGet())
.InScenario("To do list")
.WhenStateIs("Cancel newspaper item added")
.RespondWith(Response.Create()
.WithBody("Buy milk;Cancel newspaper subscription"));
.Given(Request.Create()
.WithPath("/todo/items")
.UsingGet())
.InScenario("To do list")
.WhenStateIs("Cancel newspaper item added")
.RespondWith(Response.Create()
.WithBody("Buy milk;Cancel newspaper subscription"));
// Act and Assert
string url = "http://localhost:" + _server.Ports[0];
@@ -65,4 +65,26 @@ The first Scenario and State definition can also be used in the JSON Admin inter
"Body": "Buy milk"
}
}
```
# Stay in the same State for a number of requests
In case you want to match a request for a certain state multiple times before moving to the next state, you can specify this. Example code:
In the above scenario, if you want to add more items to the ToDo list, like
- Fixing the car
- Cancel newspaper
And you want to move to the next state when these two requests are matched, set the `times` variable to `2` like this:
``` c#
_server
.Given(Request.Create()
.WithPath("/todo/items")
.UsingPost())
.InScenario("To do list")
.WhenStateIs("TodoList State Started")
.WillSetStateTo("Cancel newspaper item added", 2) // <-- The number of times this match should be matched before the state will be changed to the specified one.
.RespondWith(Response.Create()
.WithStatusCode(201));
```