Examine one particular call and ignore the rest
- by lulalala
I have a Currency class and want to update its rates. The following is the spec of an update class I plan to write:
describe WebCrawlers::Currency::FeedParser do
let(:gbp){ double('GBP').as_null_object }
let(:usd){ double('USD').as_null_object }
describe '#perform' do
before do
Currency.stub(:find_by_name).with('GBP').and_return( gbp )
Currency.stub(:find_by_name).with('USD').and_return( usd )
end
it 'should update GBP rate' do
gbp.should_receive(:update_attributes).with(rate_to_usd:0.63114)
subject.perform
end
it 'should not update USD rate' do
usd.should_not_receive(:update_attributes)
subject.perform
end
end
end
and it works find if I only update GBP in my actual class:
class WebCrawlers::Currency::FeedParser
def perform
Currency.find_by_name('GBP').update_attributes(rate_to_usd: 0.63114)
end
end
However once I start updating other currencies like 'CAD', Rspec complains
<Currency> received :find_by_name with unexpected arguments
expected: ("USD")
got: ("CAD")
Why is this the case? Instead of NOT expecting USD, it says it is.
And in the future there will be lots of currencies to update, but I don't want to test and stub each one of them. How can I resolve this issue?
