require File.expand_path('../../../spec_helper', __FILE__) require File.expand_path('../fixtures/classes', __FILE__) describe "Enumerable#count" do before :each do @elements = [1, 2, 4, 2] @numerous = EnumerableSpecs::Numerous.new(*@elements) end describe "when no argument or a block" do it "returns size" do @numerous.count.should == 4 end describe "with a custom size method" do before :each do class << @numerous def size :any_object end end end it "ignores the custom size method" do @numerous.count.should == 4 end end end it "counts nils if given nil as an argument" do EnumerableSpecs::Numerous.new(nil, nil, nil, false).count(nil).should == 3 end it "accepts an argument for comparison using ==" do @numerous.count(2).should == 2 end it "uses a block for comparison" do @numerous.count{|x| x%2==0 }.should == 3 end it "ignores the block when given an argument" do -> { @numerous.count(4){|x| x%2==0 }.should == 1 }.should complain(/given block not used/) end describe "when each yields multiple values" do it "gathers initial args as elements" do multi = EnumerableSpecs::YieldsMulti.new multi.count {|e| e == 1 }.should == 1 end it "accepts an argument for comparison using ==" do multi = EnumerableSpecs::YieldsMulti.new multi.count([1, 2]).should == 1 end end end