如何使用多行字符串示例比较 Cucumber 步骤中的 xml 输出？
Chargify 在其文档中提供了此 Cucumber 场景。
Scenario: Retrieve a customer via my reference id (as an integer or simple string)
Given I have a customer with these attributes
| reference | first_name | last_name | email |
| 7890 | Joe | Blow | [email protected] |
When I send a GET request to https://[@subdomain].chargify.com/customers/lookup.xml?reference=7890
Then the response status should be "200 OK"
And the response should be the xml:
"""
<?xml version="1.0" encoding="UTF-8"?>
<customer>
<id type="integer">`auto generated`</id>
<first_name>Joe</first_name>
<last_name>Blow</last_name>
<email>[email protected]</email>
<organization>`your value`</organization>
<reference>7890</reference>
<created_at type="datetime">`auto generated`</created_at>
<updated_at type="datetime">`auto generated`</updated_at>
</customer>
"""
我试图遵循他们的方法来测试我们在这里开发的 API，而不是像我在遇到这个示例之前所做的那样，一一检查标签。
由于格式问题，到目前为止，还没有成功将响应的输出与步骤的多行字符串进行匹配。还没有找到使用 Nokogiri 或简单的剥离字符串比较的方法。
有没有一种优雅（且有效）的方法来做到这一点？
更新
这是使用马克解决方案的黄瓜步骤：
Then /^I should see the following output$/ do |xml_output|
response = Hash.from_xml(page.body)
expected = Hash.from_xml(xml_output)
expected.diff(response).should == {}
end
Chargify has this Cucumber scenario in their docs.
Scenario: Retrieve a customer via my reference id (as an integer or simple string)
Given I have a customer with these attributes
| reference | first_name | last_name | email |
| 7890 | Joe | Blow | [email protected] |
When I send a GET request to https://[@subdomain].chargify.com/customers/lookup.xml?reference=7890
Then the response status should be "200 OK"
And the response should be the xml:
"""
<?xml version="1.0" encoding="UTF-8"?>
<customer>
<id type="integer">`auto generated`</id>
<first_name>Joe</first_name>
<last_name>Blow</last_name>
<email>[email protected]</email>
<organization>`your value`</organization>
<reference>7890</reference>
<created_at type="datetime">`auto generated`</created_at>
<updated_at type="datetime">`auto generated`</updated_at>
</customer>
"""
I'm trying to follow their approach in testing an API we're developing here, instead of checking for the tags one by one, like I we were doing before coming across this example.
So far no luck matching the response's output with the step's multiline string, due to formatting issues. Haven't found a way with Nokogiri nor with simple stripped string comparison.
Is there an elegant (and efficient) way to do this?
Update
Here's the cucumber step using Mark's solution:
Then /^I should see the following output$/ do |xml_output|
response = Hash.from_xml(page.body)
expected = Hash.from_xml(xml_output)
expected.diff(response).should == {}
end
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您可以使用 Hash.from_xml ，然后与 Hash.diff。作为散列进行比较可以消除因混乱比较而导致的微不足道的空白。
You can use Hash.from_xml and then compare with Hash.diff. Comparing as hashes eliminates insignificant whitespace from messing up comparisons.
如果您不希望依赖 ActiveSuport（例如，如果您在 Rails 之外），您可以尝试 等效的 xml gem。它允许您将上述期望写成如下：
In case you don't want the dependency on ActiveSuport (for instance, if you are outside Rails), you might try the equivalent-xml gem. It allows you to write the above expectation as follows: