require 'test_helper' require 'tins/xt' module Tins class UniqByTest < Test::Unit::TestCase unless defined?(Point) class Point < Struct.new :x, :y end end def test_uniq_by assert_equal [ 1, 2, 3 ], [ 1, 2, 2, 3 ].uniq_by.sort a = [ 1, 2, 2, 3 ]; a.uniq_by! assert_equal [ 1, 2, 3 ], a.sort p1 = Point.new 1, 2 p2 = Point.new 2, 2 p3 = Point.new 2, 2 p4 = Point.new 3, 3 a = [ p1, p2, p3, p4 ] a_uniq = a.uniq_by { |p| p.y } assert_equal 2, a_uniq.size assert a_uniq.include?(p4) assert [ p1, p2, p3 ].any? { |p| a_uniq.include? p } a.uniq_by! { |p| p.y } assert_equal 2, a.size assert a.include?(p4) assert [ p1, p2, p3 ].any? { |p| a.include? p } end end end