my $test = $helper->run_test({   # wraps methods get_ok, post_ok etc from Test::Mojo
    uri      => $some_endpoint,  # what we are testing
    status   => 201,             # expected status of call to our API
    method   => 'post',          # HTTP method of the request
    data     => $json_args,      # what the user would pass in the call to our API
    override => [{ 
        method  => 'get',        # HTTP method of the first mocked external call
        status  => 200,          # mocked return status of the first mocked call
        content => $some_data,   # mocked response content from the first mocked call
    }, { 
        method  => 'post',       # HTTP method of the second mocked external call
        status  => 201,          # mocked return status of the second mocked call
        content => $other_data,  # mocked response content from the second mocked call
    }],
});

$test->json_is('/result/foo', 'bar'); # Test::Mojo methods used to test the response