对于黄瓜情景的简洁和实用,我印象深刻,它们是测试不同情况的好方法.
例如例如黄瓜情景
Feature: Manage Users
In order to manage user details
As a security enthusiast
I want to edit user profiles only when authorized
Scenario Outline: Show or hide edit profile link
Given the following user records
| username | password | admin |
| bob | secret | false |
| admin | secret | true |
Given I am logged in as "<login>" with password "secret"
When I visit profile for "<profile>"
Then I should <action>
Examples:
| login | profile | action |
| admin | bob | see "Edit Profile" |
| bob | bob | see "Edit Profile" |
| | bob | not see "Edit Profile" |
| bob | admin | not see "Edit Profile" |
(代码取自Ryan Bates’ More on Cucumber Screencast)
RSpec有相当的等级吗？
我想在RSpec中做同样的事情,并通过在场景表中将不同的测试减少到一行来减少我的代码.
虽然我可以自己编写代码,但我正在考虑的事实让我想知道两件事情
>如果这是有用的,它可能已经存在,在哪种情况下如何使用它？
>如果不存在,它表明不应该这样做,而且我不正确地接近问题,我应该如何反思我的RSPec方法？
哪个答案是正确的,如果它是有用的,我该如何做？
解决方法
尝试以下方法.我喜欢原来的方式.
describe StateDateMethods do
before :each do
@product = OpenStruct.new
@product.extend StateDateMethods
end
def parse_date(unparsed_date_value)
unless unparsed_date_value.nil?
DateTime.strptime(unparsed_date_value,'%m/%d/%Y')
end
end
context '#pre_order?' do
examples = [
# [visible_on,pre_order_on,for_sale_on] => method_result
{ :inputs => [nil,nil,nil],:expected => false },{ :inputs => ['1/1/2001','1/1/2001',:expected => true },'1/2/2001','1/2/2001'],'1/1/3001'],'1/1/3001','1/2/3001'],{ :inputs => ['1/1/3001','1/1/2001'],:expected => false }
]
examples.each do |example|
inputs = example[:inputs]
it "should return #{example[:expected].inspect} when visible_on == #{inputs[0].inspect},pre_order_on == #{inputs[1].inspect},for_sale_on == #{inputs[2].inspect}" do
@product.visible_on = parse_date(inputs[0])
@product.pre_order_on = parse_date(inputs[1])
@product.for_sale_on = parse_date(inputs[2])
@product.pre_order?.should == example[:expected]
end
end
end
end
我认为这给了两个世界最好的,因为它让我不再重复,并且为每个条件创建了一个不同的测试.
这是一个失败的样子：
....F.....
Failures:
1) StateDateMethods#pre_order? should return false when visible_on == "1/1/2001",pre_order_on == "1/1/2001",for_sale_on == "1/2/2001"
Failure/Error: @product.pre_order?.should == example[:expected]
expected: false
got: true (using ==)
# ./spec_no_rails/state_date_methods_spec.rb:40:in `block (4 levels) in <top (required)>'
Finished in 0.38933 seconds
10 examples,1 failure
Failed examples:
rspec ./spec_no_rails/state_date_methods_spec.rb:35 # StateDateMethods#pre_order? should return false when visible_on == "1/1/2001",for_sale_on == "1/2/2001"
这就是所有绿色的样子：
.......... Finished in 0.3889 seconds 10 examples,0 failures