require File.expand_path('../../../spec_helper', __FILE__) require 'set' describe "Set#divide" do it "divides self into a set of subsets based on the blocks return values" do set = Set["one", "two", "three", "four", "five"].divide { |x| x.length } set.map { |x| x.to_a.sort }.sort.should == [["five", "four"], ["one", "two"], ["three"]] end it "yields each Object to the block" do ret = [] Set["one", "two", "three", "four", "five"].divide { |x| ret << x } ret.sort.should == ["five", "four", "one", "three", "two"] end # BUG: Does not raise a LocalJumpError, but a NoMethodError # # it "raises a LocalJumpError when not passed a block" do # lambda { Set[1].divide }.should raise_error(LocalJumpError) # end end describe "Set#divide when passed a block with an arity of 2" do it "divides self into a set of subsets based on the blocks return values" do set = Set[1, 3, 4, 6, 9, 10, 11].divide { |x, y| (x - y).abs == 1 } set.map{ |x| x.to_a.sort }.sort.should == [[1], [3, 4], [6], [9, 10, 11]] end it "yields each two Object to the block" do ret = [] Set[1, 2].divide { |x, y| ret << [x, y] } ret.sort.should == [[1, 1], [1, 2], [2, 1], [2, 2]] end end