Class: DiffMatcher::Difference

Inherits:
Object
  • Object
show all
Defined in:
lib/diff_matcher/difference.rb

Constant Summary collapse

RESET = 
"\e[0m"
BOLD = 
"\e[1m"
RED = 
"\e[31m"
GREEN = 
"\e[32m"
YELLOW = 
"\e[33m"
BLUE = 
"\e[34m"
MAGENTA = 
"\e[35m"
CYAN = 
"\e[36m"
DEFAULT_COLOR_SCHEME = 
{
    :missing       => [RED   , "-"],
    :additional    => [YELLOW, "+"],
    :match_value   => [nil   , nil],
    :match_regexp  => [GREEN , "~"],
    :match_class   => [BLUE  , ":"],
    :match_matcher => [BLUE  , "|"],
    :match_range   => [CYAN  , "."],
    :match_proc    => [CYAN  , "{"],
    :match_rspec   => [CYAN  , "R"]
}

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expected, actual, opts = {}) ⇒ Difference 



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# File 'lib/diff_matcher/difference.rb', line 125

def initialize(expected, actual, opts={})
  @opts = opts
  @ignore_additional = opts[:ignore_additional]
  @quiet             = opts[:quiet]
  @color_scheme      = self.class.color_schemes[opts[:color_scheme]] || self.class.color_scheme || self.class.color_schemes[:default]
  @color_enabled     = (opts[:color_enabled].nil? && opts[:color_scheme].nil?) ? self.class.color_enabled : !!opts[:color_scheme] || opts[:color_enabled]
  @optional_keys = opts.delete(:optional_keys) || []
  @dif_count = 0
  @difference = difference(expected, actual)
  @html_output = opts[:html_output]
  @color_enabled = true if @html_output
end

Class Attribute Details

.color_enabled ⇒ Object 



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# File 'lib/diff_matcher/difference.rb', line 116

def color_enabled
  @color_enabled.nil? ? !!@color_scheme : @color_enabled
end

.color_scheme ⇒ Object

Returns the value of attribute color_scheme.



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# File 'lib/diff_matcher/difference.rb', line 96

def color_scheme
  @color_scheme
end

.color_schemes ⇒ Object 



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# File 'lib/diff_matcher/difference.rb', line 99

def color_schemes
  @color_schemes ||= {
    :default          => DEFAULT_COLOR_SCHEME,
    :white_background => DEFAULT_COLOR_SCHEME.merge(
      :additional    => [MAGENTA, "+"]
    )
  }
end

Class Method Details

.configure(&block) ⇒ Object 



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# File 'lib/diff_matcher/difference.rb', line 120

def configure(&block)
  block.call(self)
end

Instance Method Details

#dif ⇒ Object 



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# File 'lib/diff_matcher/difference.rb', line 168

def dif
  @difference
end

#dif_count ⇒ Object 



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# File 'lib/diff_matcher/difference.rb', line 164

def dif_count
  @dif_count
end

#matching? ⇒ Boolean 



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# File 'lib/diff_matcher/difference.rb', line 138

def matching?
  @match ||= @difference ? item_types.map { |item_type|
    @color_scheme[item_type]
  }.inject(0) { |count, (color, prefix)|
    count + @difference.scan("#{color}#{prefix}").size
  } == 0 : true
end

#to_s ⇒ Object 



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# File 'lib/diff_matcher/difference.rb', line 146

def to_s
  if @difference
    msg = "\e[0m" + @difference.split("\n").join("\n\e[0m")
    where = @color_scheme.keys.collect { |item_type|
      unless item_type == :match_value
        color, prefix = @color_scheme[item_type]
        count = msg.scan("#{color}#{prefix}").size
        @dif_count += count if [:missing, :additional].include? item_type
        "#{color}#{prefix} #{BOLD}#{count} #{item_type}#{RESET}" if count > 0
      end
    }.compact.join(", ")
    msg <<  "\nWhere, #{where}" if where.size > 0

    msg.gsub!(/\e\[\d+m/, "") unless @color_enabled
    @html_output ? "<pre>\n#{escape_to_html(msg)}\n</pre>" : msg
  end
end