How to validate presence of an array in Rails with Rspec?

Question

My specs work fine validating login and in that validation I have access to some_array but in the validation for some_array it fails because I don't have access to it. Is there some special thing I need to do to test for arrays?

model

  validates_presence_of :login, :some_array

rspec

  it { should validate_presence_of(:login) }
  it { should validate_presence_of(:some_array) }

This is not enough information to go on. Can you post your model code and your spec file (without the parts that are clearly irrelevant)? — Mate Solymosi
– Mate Solymosi, Commented Jul 11, 2017 at 16:40

John · Accepted Answer · 2017-07-11 21:06:28Z

1

Not much info to go on so...

What you need to think is how is the array getting set in the first place? With each of those it { } blocks a brand new WhateverModel is created.

Is Whatever.some_array populated on creation?

it { expect(WhateverModel.some_array).to_not eq([]) }
it { expect(WhateverModel.some_array).to be }

it { expect(WhateverModel.some_array).to be_kind_of Array }

If your "array" is some kind of model relation then there are other matchers for that.

There are tons of matchers you might see something more useful in the docs: https://relishapp.com/rspec/rspec-expectations/docs/built-in-matchers

answered Jul 11, 2017 at 21:06

John

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