Ruby rspec converting mock hash with strings into hash with symbol

Question

I am in a plain ruby project and I have this mock:

  let(:mock_binance_client) { instance_double(Binance::Client::REST, time: {"serverTime": 1594138489530}) }

which says that when time is called it should return a hash with a string key. However, in my actual code this happens:

  def time
    print @client.time
    Time.at(@client.time["serverTime"] / 1000).strftime(FORMAT_DATE_WITH_MILLISECONDS)
  end

$ rspec
{:serverTime=>1594138489530}F

What is going on? How do I prevent this from happening? Or what can I do to get around this issue?

Kache · Accepted Answer · 2020-07-07 17:01:34Z

2

In my testing, rspec shouldn't be making that conversion -- you've definitely got something else going on.

That being said, it's easy to convert:

{ a: 1, b: 2 }.transform_keys(&:to_s)
# => { 'a' => 1, 'b' => 2 }

{ 'a' => 1, 'b' => 2 }.transform_keys(&:to_sym)
# => { a: 1, b: 2 }

You can change your code to always do the former to @client.time to coerce information into a known format.

I think you should still try to debug your specs to see why the conversion is happening though. (Is it even the object that you think it is?)

answered Jul 7, 2020 at 16:52

Kache

17k13 gold badges59 silver badges87 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jake · Accepted Answer · 2025-02-21 02:18:57Z

0

Using rocket (=>) syntax fixes it for me. No idea why rspec does this.

answered Feb 21 at 2:18

Jake

3796 silver badges26 bronze badges