How to unit test a promise? about promises

[jeskew]

You can resolve the promise with a response object. Alternatively, you can return a FulfilledPromse, which will already be resolved with whatever value you pass to its constructor.

[gmansilla]

@jeskew thanks for your response.

When I try to resolve the Promise with a Response Object I get the message "Function name must be a string"

[jeskew]

I believe that error is being thrown by something unrelated. PHP provides that error message when you try to invoke something that isn't callable as a function, such as in the following example:

$a = 1;
$a();

There are examples of promises being resolved with objects in this repository's unit test suite. See https://github.com/guzzle/promises/blob/master/tests/PromiseTest.php#L577 for an example of how this is done.

[bpawan]

Might be a related problem. I have the following problem posted on the stackoverflow, that I encountered while unit testing the class which takes guzzle client as dependency along with the handlers for the response. The problem is when I send an async request and recieve the promise and do something with the response. I could not find a way to test the handling of the response since the logic is inside the callback.

Here is the link to the problem: https://stackoverflow.com/questions/53211474/unit-testing-guzzle-http-promises-callbacks

I am not sure if this is related to guzzle promise or in general testing of the callbacks in php.

Any suggestions here?