# File lib/rspec/matchers/built_in/have.rb, line 5 def initialize(expected, relativity=:exactly) @expected = case expected when :no then 0 when String then expected.to_i else expected end @relativity = relativity @actual = @collection_name = @plural_collection_name = nil end
# File lib/rspec/matchers/built_in/have.rb, line 82 def description "have #{relative_expectation} #{@collection_name}" end
# File lib/rspec/matchers/built_in/have.rb, line 36 def determine_collection(collection_or_owner) if collection_or_owner.respond_to?(@collection_name) collection_or_owner.__send__(@collection_name, *@args, &@block) elsif (@plural_collection_name && collection_or_owner.respond_to?(@plural_collection_name)) collection_or_owner.__send__(@plural_collection_name, *@args, &@block) elsif determine_query_method(collection_or_owner) collection_or_owner else collection_or_owner.__send__(@collection_name, *@args, &@block) end end
# File lib/rspec/matchers/built_in/have.rb, line 48 def determine_query_method(collection) [:size, :length, :count].detect {|m| collection.respond_to?(m)} end
# File lib/rspec/matchers/built_in/have.rb, line 56 def failure_message_for_should "expected #{relative_expectation} #{@collection_name}, got #{@actual}" end
# File lib/rspec/matchers/built_in/have.rb, line 60 def failure_message_for_should_not if @relativity == :exactly return "expected target not to have #{@expected} #{@collection_name}, got #{@actual}" elsif @relativity == :at_most return <<-EOF Isn't life confusing enough? Instead of having to figure out the meaning of this: #{Expectations::Syntax.negative_expression("actual", "have_at_most(#{@expected}).#{@collection_name}")} We recommend that you use this instead: #{Expectations::Syntax.positive_expression("actual", "have_at_least(#{@expected + 1}).#{@collection_name}")} EOF elsif @relativity == :at_least return <<-EOF Isn't life confusing enough? Instead of having to figure out the meaning of this: #{Expectations::Syntax.negative_expression("actual", "have_at_least(#{@expected}).#{@collection_name}")} We recommend that you use this instead: #{Expectations::Syntax.positive_expression("actual", "have_at_most(#{@expected - 1}).#{@collection_name}")} EOF end end
# File lib/rspec/matchers/built_in/have.rb, line 23 def matches?(collection_or_owner) collection = determine_collection(collection_or_owner) query_method = determine_query_method(collection) raise not_a_collection unless query_method @actual = collection.__send__(query_method) case @relativity when :at_least then @actual >= @expected when :at_most then @actual <= @expected else @actual == @expected end end
# File lib/rspec/matchers/built_in/have.rb, line 52 def not_a_collection "expected #{@collection_name} to be a collection but it does not respond to #length, #size or #count" end
# File lib/rspec/matchers/built_in/have.rb, line 15 def relativities @relativities ||= { :exactly => "", :at_least => "at least ", :at_most => "at most " } end
# File lib/rspec/matchers/built_in/have.rb, line 86 def respond_to?(m) @expected.respond_to?(m) || super end
# File lib/rspec/matchers/built_in/have.rb, line 92 def method_missing(method, *args, &block) @collection_name = method if inflector = (defined?(ActiveSupport::Inflector) && ActiveSupport::Inflector.respond_to?(:pluralize) ? ActiveSupport::Inflector : (defined?(Inflector) ? Inflector : nil)) @plural_collection_name = inflector.pluralize(method.to_s) end @args = args @block = block self end
# File lib/rspec/matchers/built_in/have.rb, line 102 def relative_expectation "#{relativities[@relativity]}#{@expected}" end