Class: Arbre::RSpec::ContainScriptMatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/arbre/rspec/contain_script_matcher.rb

Overview

Used to match JS snippets in HTML content. The JS is canonized as much as possible, so that you don’t have to worry about whitespace. Use ‘(…)’ as a wildcard. You may even place text in the wildcard for readability: ‘(… some wildcard …)’.

Examples

expect(document.body).to contain_script('Flux.Application.initialize()')
expect(document.body).to contain_script('Flux.Application.initialize((... args ...))')

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expected) ⇒ ContainScriptMatcher

Returns a new instance of ContainScriptMatcher.



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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 14

def initialize(expected)
  @expected = expected
end

Instance Attribute Details

#expected ⇒ Object (readonly)

Returns the value of attribute expected.



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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 18

def expected
  @expected
end

Instance Method Details

#canonize_js(js) ⇒ Object 



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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 29

def canonize_js(js)
  js = js.dup

  js.gsub! %r|//\s+<!\[CDATA\[[\n\r]+|, ''
  js.gsub! %r|[\n\r]+//\s+\]\]>|, ''

  js.gsub! /(\s*[\n\r]\s*)+/, ' '
  js.gsub! /^\s+|\s+$/, ''

  js
end

#description ⇒ Object 



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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 20

def description
  "contain script #{expected}"
end

#failure_message ⇒ Object 



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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 41

def failure_message
  <<-MSG.gsub(/^\s{10}/, '')
    expected that element of type #{@actual.class} contained script:
      expected: #{expected.is_a?(Regexp) ? '/' + canonize_js(expected.source) + '/' : canonize_js(expected)} (#{expected.class})
           got: #{@actual.nil? ? 'nil' : canonize_js(@actual.to_s)}
  MSG
end

#failure_message_when_negated ⇒ Object 



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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 49

def failure_message_when_negated
  <<-MSG.gsub(/^\s{10}/, '')
    expected that element of type #{actual.class} would not contain a script:
      script: #{expected.is_a?(Regexp) ? '/' + canonize_js(expected.source) + '/' : canonize_js(expected)} (#{expected.class})
  MSG
end

#matches?(actual) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/arbre/rspec/contain_script_matcher.rb', line 24

def matches?(actual)
  @actual = actual
  canonize_js(actual.to_s).include?(canonize_js(expected))
end