REUSE_USAGE.md

Usages

Reuse response content

Another thing patterns allow you is to catch values from expected response to reuse them in ulterior tests. Hence , it is a feature reserved to scenario testing.

To catch a value, you need to alter the expected value of an attribute in a response with the following structure :

"#caughtVariableName={{@pattern@}}"

• # is used to announce a value is been caught
• caughtVariableName is the name of the variable containing the caught value
• @pattern@ is for asserting the value

For example, say that you're using an uuid in your application. You can't predict its value but you need it for a scenario test. To catch it and reuse it, modify the expected response of the post first :

{
  "id":"@integer@",
  "uuid": "#uuid={{@uuid@}}",
  "name":"@name@",
  "value":418,
  "date_of_creation":"@string@.isDateTime()",
  "active":true
}

See that "#uuid={{@uuid@}}" pattern ? Not only it asserts the value is an uuid, but also saves it in an uuid variable.

Now, to delete that entry using the caught variable, write your next test like that :

    - { action: "DELETE", url: "/pattern/#uuid#", status: 204 }

You can reuse value either in the yaml file or in json payload file :

{
  "id":"@integer@",
  "uuid": "#uuid={{@uuid@}}",
  "name":"#name={{posted}}",
  "value":418,
  "date_of_creation":"@string@.isDateTime()",
  "active":true
}

{
  "name" : "#name#",
  "value": 418
}

Here, the name variable caught in the response with #name is reused in the next test's payload with #name#.

You can catch as many value you want, but keep in mind that if you use the same variable name twice, the initial value will be over-written.