Class: Webrat::Matchers::HaveXpath

Inherits:
Object
  • Object
show all
Defined in:
lib/webrat/core/matchers/have_xpath.rb

Overview

:nodoc:

Direct Known Subclasses

HaveSelector

Instance Method Summary collapse

Constructor Details

#initialize(expected, options = {}, &block) ⇒ HaveXpath

Returns a new instance of HaveXpath.



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 8

def initialize(expected, options = {}, &block)
  @expected = expected
  @options  = options
  @block    = block
end

Instance Method Details

#add_attributes_conditions_to(query) ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 71

def add_attributes_conditions_to(query)
  attribute_conditions = []

  @options.each do |key, value|
    next if [:content, :count].include?(key)
    attribute_conditions << "@#{key} = #{xpath_escape(value)}"
  end

  if attribute_conditions.any?
    query << "[#{attribute_conditions.join(' and ')}]"
  end
end

#add_content_condition_to(query) ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 84

def add_content_condition_to(query)
  if @options[:content]
    query << "[contains(., #{xpath_escape(@options[:content])})]"
  end
end

#add_options_conditions_to(query) ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 66

def add_options_conditions_to(query)
  add_attributes_conditions_to(query)
  add_content_condition_to(query)
end

#failure_message ⇒ Object

Returns

String

The failure message.



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 96

def failure_message
  "expected following text to match xpath #{@expected}:\n#{@document}"
end

#matches(stringlike) ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 25

def matches(stringlike)
  if Webrat.configuration.parse_with_nokogiri?
    nokogiri_matches(stringlike)
  else
    rexml_matches(stringlike)
  end
end

#matches?(stringlike, &block) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/webrat/core/matchers/have_xpath.rb', line 14

def matches?(stringlike, &block)
  @block ||= block
  matched = matches(stringlike)

  if @options[:count]
    matched.size == @options[:count] && (!@block || @block.call(matched))
  else
    matched.any? && (!@block || @block.call(matched))
  end
end

#negative_failure_message ⇒ Object

Returns

String

The failure message to be displayed in negative matches.



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 102

def negative_failure_message
  "expected following text to not match xpath #{@expected}:\n#{@document}"
end

#nokogiri_matches(stringlike) ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 53

def nokogiri_matches(stringlike)
  if Nokogiri::XML::NodeSet === stringlike
    @query = query.gsub(%r'^//', './/')
  else
    @query = query
  end

  add_options_conditions_to(@query)

  @document = Webrat::XML.document(stringlike)
  @document.xpath(*@query)
end

#query ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 90

def query
  @expected
end

#rexml_matches(stringlike) ⇒ Object 



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# File 'lib/webrat/core/matchers/have_xpath.rb', line 33

def rexml_matches(stringlike)
  if REXML::Node === stringlike || Array === stringlike
    @query = query.map { |q| q.gsub(%r'^//', './/') }
  else
    @query = query
  end

  add_options_conditions_to(@query)

  @document = Webrat.rexml_document(stringlike)

  @query.map do |q|
    if @document.is_a?(Array)
      @document.map { |d| REXML::XPath.match(d, q) }
    else
      REXML::XPath.match(@document, q)
    end
  end.flatten.compact
end