Rails Rspec with loop and subject of multiple similar test

Question

I have a couple same tests, the only different is the arguments, but I am having trouble of looping them one by one

Here is an example where the test is

subject.orange['orange tray'] do |tray|   
    expect(tray).not_to be_nil

subject.apple['apple tray'] do |tray|   
    expect(tray).not_to be_nil

here is what I am trying to do

fruits_list = ['orange', 'apple']

fruits_list.each do |fruit|
  subject."#{fruit}[#{fruit} tray]" do |tray|    <------- the error, I can't get this to work
    expect(tray).not_to be_nil
end

kddeisz · Accepted Answer · 2013-12-30 20:05:29Z

3

You need to use the send method, not just hand a string to an object. You could probably do something like:

['orange', 'apple'].each do |fruit|
  subject.send(fruit.to_sym)["#{fruit} tray"] do |tray|
    expect(tray).not_to be_nil
  end
end

answered Dec 30, 2013 at 20:05

kddeisz

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5 Comments

AirWick219 Over a year ago

thank you so much.. wasn't sure what keywords to search for for this and tried multiple things...

kddeisz Over a year ago

No problem! About a month ago I took a quick glance through the object, hash, and array documentations and have experienced a lot of benefits since. They are, respectively, ruby-doc.org/core-2.1.0/Object.html, ruby-doc.org/core-2.1.0/Hash.html, and ruby-doc.org/core-2.1.0/Array.html.

AirWick219 Over a year ago

Thank you I will definitely check those out

AirWick219 Over a year ago

what about subject.exist[:orange_tray] it's not something like subject.exist[:#{fruit}_tray]

kddeisz Over a year ago

What? That comment doesn't make sense.

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