Class: Brut::SpecSupport::EnhancedNode

Inherits:
SimpleDelegator
  • Object
show all
Includes:
RSpec::Matchers
Defined in:
lib/brut/spec_support/enhanced_node.rb

Overview

A delegator to a Nokogiri Node that provides convienience methods for navigating the DOM inside a test.

Instance Method Summary collapse

Instance Method Details

#e(css_selector) ⇒ Object

Return the only Nokogiri::XML::Node for the given CSS selector, if it exists. If the selector matches more than one element, the test fails. If the selector matches one element, it is returned, and nil is returned if no elements match.



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# File 'lib/brut/spec_support/enhanced_node.rb', line 11

def e(css_selector)
  element = css(css_selector)
  if (element.kind_of?(Nokogiri::XML::NodeSet))
    expect(element.length).to be < 2
    first_element = element.first
    if first_element
      return Brut::SpecSupport::EnhancedNode.new(first_element)
    else
      return nil
    end
  else
    expect([Nokogiri::XML::Node, Nokogiri::XML::Element]).to include(element.class)
    return Brut::SpecSupport::EnhancedNode.new(element)
  end
end

#e!(css_selector) ⇒ Object

Assert exactly one Nokogiri::XML::Node exists for the given CSS selector and return it. If there is not exactly one matching node, the test fails.



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# File 'lib/brut/spec_support/enhanced_node.rb', line 29

def e!(css_selector)
  element = css(css_selector)
  if (element.kind_of?(Nokogiri::XML::NodeSet))
    expect(element.length).to eq(1),"#{css_selector} matched #{element.length} elements, not exactly 1:\n\n#{to_html}"
    return Brut::SpecSupport::EnhancedNode.new(element.first)
  else
    expect([Nokogiri::XML::Node, Nokogiri::XML::Element]).to include(element.class)
    return Brut::SpecSupport::EnhancedNode.new(element)
  end
end

#first!(css_selector) ⇒ Object

Return ths first Nokogiri::XML::Node for the given CSS selector. If there are no matching nodes, the test fails.



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# File 'lib/brut/spec_support/enhanced_node.rb', line 42

def first!(css_selector)
  element = css(css_selector)
  if (element.kind_of?(Nokogiri::XML::NodeSet))
    expect(element.first).not_to eq(nil), "No elements matching #{css_selector}"
    return Brut::SpecSupport::EnhancedNode.new(element.first)
  else
    expect([Nokogiri::XML::Node, Nokogiri::XML::Element]).to include(element.class)
    return Brut::SpecSupport::EnhancedNode.new(element)
  end
end