Question

我从XML中提取一个值并使用该值来检查它是否存在于PDF文件中：

我拥有的XML

<RealTimeLetter>
 <Customer>
    <RTLtr_Acct>0163426</RTLtr_Acct>
    <RTLtr_CustomerName>LSIH JHTWVZ</RTLtr_CustomerName>
    <RTLtr_CustomerAddress1>887 YPCLY THYZO SU</RTLtr_CustomerAddress1>
    <RTLtr_CustomerAddress2 />
    <RTLtr_CustomerCity>WOODSTOCK,</RTLtr_CustomerCity>
    <RTLtr_CustomerState>GA</RTLtr_CustomerState>
    <RTLtr_CustomerZip>30188</RTLtr_CustomerZip>
    <RTLtr_ADAPreference>NONE</RTLtr_ADAPreference>
    <RTLtr_Addressee>0</RTLtr_Addressee>
 </Customer>
</RealTimeLetter>

PDF文件具有客户名称和地址

LSIH JHTWVZ
887 YPCLY THYZO SU
WOODSTOCK, GA 30188

我正在使用PDF阅读器和Nokogiri宝石从PDF中读取文本，从XML中提取客户名称并检查PDF中是否包含客户名称。

PDF阅读器被解析为

require 'pdf_reader'

  def parse_pdf
    PDF::Reader.new(@filename)
  end

 @reader = file('C:\Users\ecz560\Desktop\30004_Standard.pdf').parse_pdf

require 'nokogiri'

@xml = Nokogiri::XML(File.open('C:\Users\ecz560\Desktop\30004Standard.xml'))

@CustName = @xml.xpath("//Customer[RTLtr_Loancust='0163426']//RTLtr_CustomerName").map(&:text).to_s
 page_index = 0
 @reader.pages.each do |page|
 page_index = page_index+1
   if expect(page.text).to include  @CustName
     valid_text = "Given text is present in -- #{page_index}"
     puts valid_text
   end
 end

但我收到了一个错误：

RSpec::Expectations::ExpectationNotMetError: expected "LSIH JHTWVZ\n        887 YPCLY THYZO SU\n               WOODSTOCK, GA 30188\n                                                                                                                                  Page 1 of 1" to include "[\"LSIH JHTWVZ\"]"
Diff:
@@ -1,2 +1,80 @@
-["LSIH JHTWVZ"]

+        LSIH JHTWVZ
+        887 YPCLY THYZO SU                                                   
+        WOODSTOCK, GA 30188                                                  

./features/step_definitions/Letters/Test1_Letters.rb:372:in `block (2 levels) in <top (required)>'
./features/step_definitions/Letters/Test1_Letters.rb:370:in `each'
./features/step_definitions/Letters/Test1_Letters.rb:370:in `/^I validate the PDF content$/'
C:\Users\ecz560\Documents\GitHub\ATDD Local\features\FeatureFiles\Letters\Test1_Letters.feature:72:in `Then I validate the PDF content'

理解问题与我比较@Custname的方式有关。我该如何解决这个问题？

Answer 1

if expect(page.text).to include @CustName

expect不是这样使用的。

在测试中使用了一个期望，以验证您的代码是否正常运行。它不应该在普通代码中使用。
期望抛出异常并在失败时暂停所有代码。它不会返回true / false - 如果失败则无法继续 - 它会像在代码中那样抛出异常（正确），然后你的所有代码都会停止并赢得＆t重新开始。

您可能想要做的只是检查这样的值：

if page.text.includes?(@CustName)

（注意：我没有对其进行错误测试......你可能需要google以正确的方式编写它并编写类似的实际工作方式。）

Answer 2

我看到的一件事是您的XPath选择器无效。

//Customer[RTLtr_Loancust='0163426']//RTLtr_CustomerName

测试它：

require 'nokogiri'

doc = Nokogiri::XML(<<EOT)
<RealTimeLetter>
<Customer>
    <RTLtr_Acct>0163426</RTLtr_Acct>
    <RTLtr_CustomerName>LSIH JHTWVZ</RTLtr_CustomerName>
    <RTLtr_CustomerAddress1>887 YPCLY THYZO SU</RTLtr_CustomerAddress1>
    <RTLtr_CustomerAddress2 />
    <RTLtr_CustomerCity>WOODSTOCK,</RTLtr_CustomerCity>
    <RTLtr_CustomerState>GA</RTLtr_CustomerState>
    <RTLtr_CustomerZip>30188</RTLtr_CustomerZip>
    <RTLtr_ADAPreference>NONE</RTLtr_ADAPreference>
    <RTLtr_Addressee>0</RTLtr_Addressee>
</Customer>
</RealTimeLetter>
EOT

doc.search("//Customer[RTLtr_Loancust='0163426']//RTLtr_CustomerName").to_xml # => ""

使用一点修改找到<Customer>节点：

doc.search('//Customer/RTLtr_Acct/text()[contains(., "0163426")]/../..').to_xml

# => "<Customer>\n    <RTLtr_Acct>0163426</RTLtr_Acct>\n    <RTLtr_CustomerName>LSIH JHTWVZ</RTLtr_CustomerName>\n    <RTLtr_CustomerAddress1>887 YPCLY THYZO SU</RTLtr_CustomerAddress1>\n    <RTLtr_CustomerAddress2/>\n    <RTLtr_CustomerCity>WOODSTOCK,</RTLtr_CustomerCity>\n    <RTLtr_CustomerState>GA</RTLtr_CustomerState>\n    <RTLtr_CustomerZip>30188</RTLtr_CustomerZip>\n    <RTLtr_ADAPreference>NONE</RTLtr_ADAPreference>\n    <RTLtr_Addressee>0</RTLtr_Addressee>\n</Customer>"

此时，可以轻松地从<Customer>内的元素中获取内容：

customer = doc.search('//Customer/RTLtr_Acct/text()[contains(., "0163426")]/../..')
customer.at('RTLtr_Acct').text # => "0163426"
customer.at('RTLtr_CustomerAddress1').text # => "887 YPCLY THYZO SU"

如何解决＆＃34; RSpec :: Expectations :: ExpectationNotMetError：expected＆＃34;错误？

2 个答案: