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rspecrspec-rails

Why is RSpec lying to me about errors on my active model object?

code

class Foo
  include ActiveModel::Validations

  def bar
    errors.add(:base, 'WHAT THE HELL!?')
  end
end

spec

describe 'nonsense' do
  specify do
    foo = Foo.new
    foo.bar
    expect(foo).to have(1).error_on(:base)
  end
end

output

 Failure/Error: specify { expect(foo).to have(1).error_on(:base) }
   expected 1 error on :base, got 0

real proof of nonsense:

describe 'nonsense' do
  specify do
    foo = Foo.new
    foo.bar
    pus foo.errors.inspect
    expect(foo).to have(1).error_on(:base)
  end
end

===>
#<ActiveModel::Errors:0x00000109ba51a8 @base=#<Foo:0x00000109ba51f8 @errors=#<ActiveModel::Errors:0x00000109ba51a8 ...>>, @messages={:base=>["WHAT THE HELL!?"]}>

omg...

Solution

  • It appears that if you don't call the "valid?" method prior to using the "have(n).errors_on" matcher in a spec, it will always return false, even if your errors object has stuff in it!