RSpec test custom validator
Solution 1
The problem is that you're expecting @time_event.errors
to behave like an array of strings. It doesn't, it returns ActiveModel::Errors. As others pointed out, you also need to trigger the validations with a call to valid?
:
it "raises an error if end time is lower than start time" do
@time_event.valid?
@time_event.errors.full_messages.should include("An event can not be finished if it did not start yet...")
end
Solution 2
This solution works for me (using Mongoid):
The model
class OpLog
...
field :from_status, type: String
field :to_status, type: String
...
validate :states_must_differ
def states_must_differ
if self.from_status == self.to_status
errors.add(:from_status, "must differ from 'to_status'")
errors.add(:to_status, "must differ from 'from_status'")
end
end
...
end
The test:
it 'is expected to have different states' do
expect { create(:oplog, from_status: 'created', to_status: 'created').to raise_error(Mongoid::Errors::Validations) }
end
So in your case I'd write a test like this (if using ActiveRecord):
it 'raises an error if end time is lower than start time' do
expect { create(Hrm::TimeEvent.new(start_time: "2012-10-05 10:00:00", end_time: "2012-10-05 09:00:00", event_type: 2)) }.to raise_error(ActiveRecord::Errors)
end
Solution 3
There are no errors because you haven't called an event that triggers the errors. This happens normally when a record is created or saved. You may not want to hit the database in your test though and then you can use the method valid?
like this:
it "raises an error if end time is lower than start time" do
@time_event.valid?
@time_event.errors.should include("An event can not be finished if it did not start yet...")
end
Me personally would put these two tests into one since valid? is called in the first case.
Also a minor: if record.end_time
is better than if !record.end_time.nil?
. (In my opinion at least.... :-) )
siekfried
Updated on June 09, 2022Comments
-
siekfried almost 2 years
I have the following validator in my model:
class ContinuumValidator < ActiveModel::Validator def validate(record) if !record.end_time.nil? and record.end_time < record.start_time record.errors[:base] << "An event can not be finished if it did not start yet..." end end end class Hrm::TimeEvent < ActiveRecord::Base validates_with ContinuumValidator end
How can I test it using Rspec?
Here is what I have tried so far: (thanks to zetetic)
describe "validation error" do before do @time_event = Hrm::TimeEvent.new(start_time: "2012-10-05 10:00:00", end_time: "2012-10-05 09:00:00", event_type: 2) end it "should not be valid if end time is lower than start time" do @time_event.should_not be_valid end it "raises an error if end time is lower than start time" do @time_event.errors.should include("An event can not be finished if it did not start yet...") end end
But I get the following errors:
1) Hrm::TimeEvent validation error raises an error if end time is lower than start time Failure/Error: @time_event.errors.should include("An event can not be finished if it did not start yet...") expected #<ActiveModel::Errors:0x007fd1d8e02c50 @base=#<Hrm::TimeEvent id: nil, start_time: "2012-10-05 08:00:00", end_time: "2012-10-05 07:00:00", event_type: 2, employee_id: nil, created_at: nil, updated_at: nil, not_punched: false, validated: false, replace_id: nil>, @messages={}> to include "An event can not be finished if it did not start yet..." Diff: @@ -1,2 +1,5 @@ -["An event can not be finished if it did not start yet..."] +#<ActiveModel::Errors:0x007fd1d8e02c50 + @base= + #<Hrm::TimeEvent id: nil, start_time: "2012-10-05 08:00:00", end_time: "2012-10-05 07:00:00", event_type: 2, employee_id: nil, created_at: nil, updated_at: nil, not_punched: false, validated: false, replace_id: nil>, + @messages={}>
What am I doing wrong? And how can I achieve my goal? Any help or suggestion would be appreciated. Thanks.
-
siekfried about 11 yearsYou're right I need to add the full_messages to get the error. However like the other said, I need to actually test the validation with
valid?
-
siekfried about 11 yearsYou are right, but like @Benjamin Sullivan suggested, I also need to add the full_messages to the errors so that my test pass. Thanks also for the minor :)