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# encoding: utf-8
gem 'minitest'
require 'minitest/autorun'
require 'crass'
CP = Crass::Parser
CT = Crass::Tokenizer
# Hack shared test support into Minitest.
Minitest::Spec.class_eval do
def self.shared_tests
@shared_tests ||= {}
end
end
module Minitest::Spec::SharedTests
def behaves_like(desc)
self.instance_eval(&Minitest::Spec.shared_tests[desc])
end
def shared_tests_for(desc, &block)
Minitest::Spec.shared_tests[desc] = block
end
end
Object.class_eval { include Minitest::Spec::SharedTests }
# Custom assertions and helpers.
def assert_tokens(input, actual, offset = 0, options = {})
actual = [actual] unless actual.is_a?(Array)
tokens = tokenize(input, offset, options)
assert_equal tokens, actual
end
def reposition_tokens(tokens, offset)
tokens.each {|token| token[:pos] += offset }
tokens
end
def tokenize(input, offset = 0, options = {})
tokens = CT.tokenize(input, options)
reposition_tokens(tokens, offset) unless offset == 0
tokens
end
# Translates Crass tokens into a form that can be compared to the expected
# values of Simon Sapin's CSS parsing tests.
#
# https://github.com/SimonSapin/css-parsing-tests/#result-representation
def translate_tokens(tokens)
return [] if tokens.nil?
translated = []
tokens = [tokens] unless tokens.is_a?(Array)
tokens.each do |token|
value = token[:value]
result = case token[:node]
# Rules and declarations.
when :at_rule
['at-rule', token[:name], translate_tokens(token[:prelude]), token[:block] ? translate_tokens(token[:block]) : nil]
when :qualified_rule
['qualified rule', translate_tokens(token[:prelude]), token[:block] ? translate_tokens(token[:block]) : nil]
when :declaration
['declaration', token[:name], translate_tokens(value), token[:important]]
# Component values.
when :at_keyword
['at-keyword', value]
when :bad_string
['error', 'bad-string']
when :bad_url
['error', 'bad-url']
when :cdc
'-->'
when :cdo
'<!--'
when :colon
':'
when :column
'||'
when :comma
','
when :dash_match
'|='
when :delim
value
when :dimension
['dimension', token[:repr], value, token[:type].to_s, token[:unit]]
when :error
['error', value]
when :function
if token[:name]
['function', token[:name]].concat(translate_tokens(value))
else
['function', value]
end
when :hash
['hash', value, token[:type].to_s]
when :ident
['ident', value]
when :include_match
'~='
when :number
['number', token[:repr], value, token[:type].to_s]
when :percentage
['percentage', token[:repr], value, token[:type].to_s]
when :prefix_match
'^='
when :semicolon
';'
when :simple_block
[token[:start] + token[:end]].concat(translate_tokens(value))
when :string
['string', value]
when :substring_match
'*='
when :suffix_match
'$='
when :unicode_range
['unicode-range', token[:start], token[:end]]
when :url
['url', value]
when :whitespace
' '
when :'}', :']', :')'
['error', token[:node].to_s]
else
nil
end
translated << result unless result.nil?
end
translated
end
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