预期xml响应中至少有一个元素

Question

我有一个API端点，它返回一个XML响应。我想要测试一部分响应。

我有一个shop模型，引用另一个表shop_contact，这可能是也可能不是零。它包含3列，email，phone和fax

我嘲笑了几个用假接触商店，我想测试XML响应<shop_contact>至少包含这些标签的（这样吧，<email>，<phone>或<fax>）并且它不是空的。

我想：

hash = Hash.from_xml(response.body) 
hash["shops"]["shop"].each do |shop| 
    expect(shop["shop_contact"]["email"] || 
     shop["shop_contact"]["phone"] || 
     shop["shop_contact"]["fax"]).to_not be_empty 
end 

，但我得到这个错误：

You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.empty? (NoMethodError)

任何想法？

Answer 1

.to_not be_empty测试数组（或类似的）是否包含元素。所以，你可以这样做：

# construct an array 
data = [ 
    shop['shop_contact']['email'], 
    shop['shop_contact']['phone'], 
    shop['shop_contact']['fax'] 
].compact # compact removes `nil` elements 

expect(data).to_not be_empty 

或者，如果你想坚持与|| S：

expect(shop['shop_contact']['email'] || 
     shop['shop_contact']['phone'] || 
     shop['shop_contact']['fax']).to be_truthy