Matchers in expectJsonSnapshot not working?

[captaincc423]

I'm trying to get some matchers to work in expectJsonSnapshot and I'm running into a few problems:

1. I'm trying to use a variable variable with a string in an "includes()", e.g. "id": includes(response.body.id) and it's not working. It always says it doesn't match.
2. I'm using a regex and it appears that no matter what I put in it, it always matches. For instance, "createdAt": regex(/anything in here/), always passes.

Am I misusing these matchers?

[ASaiAnudeep]

Welcome to PactumJS Discussions & thanks a lot for using this library.

1. I have tested includes and it is working as expected. It you could provide more info on this, it would help us to investigate further.
2. There was a typo in our docs on the usage of regex. The function accepts two arguments - value & regex. Will update the docs and the function to accept a single argument.

it('first-post', async () => {
  await pactum.spec().name('first-post')
    .get('https://jsonplaceholder.typicode.com/posts/1')
    .expectJsonSnapshot({
      title: includes("provident"),
      id: regex(1, /\d+/)
    });
});

[captaincc423]

1. For some reason if I type the string in directly like this: let name = "My Expected name"; it's working fine, but I'm trying to use the value from a previous response like this let id = response.body.id; and it won't work. I can print it out and see it the the value is correct, but the matcher always fails. It says:

AssertionError [ERR_ASSERTION]: Json doesn't match with "id_from_response" at "$.data[0].id" but found "id_from_snapshot"

2. Thank you. I'll wait on that update!

[ASaiAnudeep]

There are two steps in validating the json snapshots.

1. Comparing the actual response with the expected snapshot with the given matching rules. Here includes('dynamic content') will be successfully matched.
2. Comparing the expected snapshot with the actual response with the given matching rules. This is vice-versa of the first step and sounds confusing. Here includes('dynamic content') will fail due to the saved snapshot in the file system will contain old content.

When expectJsonSnapshot is introduced, the matcher includes is not part of this library. Seems both of them are not compatible with each other in some corner cases.

Created an issue #100 to fix it.

As a work around, please use like or regex matcher if it fits your requirement.