Class: RSpec::Matchers::ChangeCollection::Change

Inherits:
BuiltIn::Change
  • Object
show all
Defined in:
lib/rspec/change_collection.rb

Instance Method Summary collapse

Constructor Details

#initialize(receiver = nil, message = nil, &block) ⇒ Change

Returns a new instance of Change.



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# File 'lib/rspec/change_collection.rb', line 8

def initialize(receiver=nil, message=nil, &block)
  @expected_to_include = []
  @expected_to_exclude = []

  @missing_original_items = []
  @extra_original_items = []

  @missing_final_items = []
  @extra_final_items = []

  super
end

Instance Method Details

#failure_message ⇒ Object 



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# File 'lib/rspec/change_collection.rb', line 49

def failure_message
  if @parent_matches
    message =  ""
  else
    message = super
  end

  if expect_collection_to_change?
    array_messages = []
    append_array_message = lambda do |message, values|
      array_messages << "#{message}#{values.inspect}" if values.length > 0
    end
    append_array_message.call(
      "the original collection should have included:     ",
      @missing_original_items
    )
    append_array_message.call(
      "the original collection should not have included: ",
      @extra_original_items
    )
    append_array_message.call(
      "the final collection should have included:        ",
      @missing_final_items
    )
    append_array_message.call(
      "the final collection should not have included:    ",
      @extra_final_items
    )
    append_array_message.call(
      "the original collection was:                      ",
      @change_details.actual_before
    )
    append_array_message.call(
      "the final collection was:                         ",
      @change_details.actual_after
    )
    message << "\n#{array_messages.join "\n"}\n" unless array_messages.empty?
    message
  end

  message
end

#failure_message_when_negated ⇒ Object 



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# File 'lib/rspec/change_collection.rb', line 92

def failure_message_when_negated
  return "Matcher does not support negation" if expect_collection_to_change?
  super
end

#matches? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rspec/change_collection.rb', line 21

def matches?(*)
  @parent_matches = super

  if expect_collection_to_change?
    actual_before = @change_details.actual_before
    actual_after = @change_details.actual_after

    if actual_before.respond_to?(:to_ary)
      @missing_original_items = extract_items(@expected_to_exclude) - actual_before
      @missing_original_items += reject_procs(actual_before, @expected_to_exclude)
      @extra_original_items = select_items(actual_before, @expected_to_include) & actual_before
    end

    if actual_after.respond_to?(:to_ary)
      @missing_final_items = extract_items(@expected_to_include) - actual_after
      @missing_final_items += reject_procs(actual_after, @expected_to_include)
      @extra_final_items = select_items(actual_after, @expected_to_exclude) & actual_after
    end
  end

  @parent_matches && ![
    @missing_original_items,
    @extra_original_items,
    @missing_final_items,
    @extra_final_items
  ].map(&:empty?).include?(false)
end

#to_exclude(*items, &block) ⇒ Object 



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# File 'lib/rspec/change_collection.rb', line 104

def to_exclude(*items, &block)
  check_arguments(__method__, *items, &block)
  @expected_to_exclude << items
  @expected_to_exclude << block if block
  self
end

#to_include(*items, &block) ⇒ Object 



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# File 'lib/rspec/change_collection.rb', line 97

def to_include(*items, &block)
  check_arguments(__method__, *items, &block)
  @expected_to_include << items
  @expected_to_include << block if block
  self
end