When I get an array of objects in JSON response, they might be represent in a different order.
Sometimes I get this
JSON.parse(response.body) # => [{"a" => "b"}, {"c" => "d"}]
or this
JSON.parse(response.body) # => [{"c" => "d"}, {"a" => "b"}]
But for me both results are correct. What is the easiest way to test which objects I have in response regardless of their order?
You can convert it into a set-like structure using a hash.
first_response.inject({}){|s, h| s[h] = true; s}
will be the same as
second_response.inject({}){|s, h| s[h] = true; s}
Along with its other useful features, the json spec gem has a be_json_eql matcher which works without respect to order.
be_json_eql is order independent. The code looks like @actual, @expected = scrub(actual_json, @path), scrub(@expected_json) and then does a straight @actual == @expected. the scrub method is in charge of excluding keys you don't want to be part of the comparison (e.g. updated_at), and 'normalizing' the JSON, which just calls either JSON.pretty_generate or to_json.