测试一个帮助程序,我遇到了一个问题。
我对模型有一个范围:
Task.due_within(days)
这在一个助手中被引用:
module UsersHelper
...
def show_alert(tasks, properties, user)
pulse_alert(tasks, properties) ||
tasks.due_within(7).count.positive? ||
tasks.needs_more_info.count.positive? ||
tasks.due_within(14).count.positive? ||
tasks.created_since(user.last_sign_in_at).count.positive?
end
...
end
所以我正在用tasks
,properties
和user
的存根进行测试:
RSpec.describe UsersHelper, type: :helper do
describe '#show_alert' do
it 'returns true if there are tasks due within 7 days' do
tasks = double(:task, due_within: [1, 2, 3, 4], past_due: [])
properties = double(:property, over_budget: [], nearing_budget: [])
user = double(:user)
expect(helper.show_alert(tasks, properties, user)).to eq true
end
it 'returns true if there are tasks due within 14 days' do
# uh oh. This test would be exactly the same as above.
end
end
end
这通过了,但是当我去为it 'returns true if there are tasks due within 14 days
编写测试时,我意识到我的double(:task, due_within: [])
与提供给该方法的变量没有相互作用。
显然这不起作用:
tasks = double(:task, due_within(7): [1, 2], due_within(14): [1, 2, 3, 4])
答案 0 :(得分:1)
要处理不同的情况,您可以尝试这样的事情吗?
allow(:tasks).to receive(:due_within).with(7).and_return(*insert expectation*)
allow(:tasks).to receive(:due_within).with(14).and_return(*insert expectation*)
由于您正在测试show_alert方法,因此您可能希望将测试仅与show_alert方法隔离,即模拟上述的due_within的返回值。 Due_within的功能将在单独的测试用例中处理。