require 'test/unit' class TestRange < Test::Unit::TestCase def test_range_string # XXX: Is this really the test of Range? assert_equal([], ("a" ... "a").to_a) assert_equal(["a"], ("a" .. "a").to_a) assert_equal(["a"], ("a" ... "b").to_a) assert_equal(["a", "b"], ("a" .. "b").to_a) end def test_evaluation_order arr = [1,2] r = (arr.shift)..(arr.shift) assert_equal(1..2, r, "[ruby-dev:26383]") end class DuckRange def initialize(b,e,excl=false) @begin = b @end = e @excl = excl end attr_reader :begin, :end def exclude_end? @excl end end def test_duckrange assert_equal("bc", "abcd"[DuckRange.new(1,2)]) end def test_min assert_equal(1, (1..2).min) assert_equal(nil, (2..1).min) assert_equal(1, (1...2).min) assert_equal(1.0, (1.0..2.0).min) assert_equal(nil, (2.0..1.0).min) assert_equal(1, (1.0...2.0).min) assert_equal(0, (0..0).min) assert_equal(nil, (0...0).min) end def test_max assert_equal(2, (1..2).max) assert_equal(nil, (2..1).max) assert_equal(1, (1...2).max) assert_equal(2.0, (1.0..2.0).max) assert_equal(nil, (2.0..1.0).max) assert_raise(TypeError) { (1.0...2.0).max } assert_equal(-0x80000002, ((-0x80000002)...(-0x80000001)).max) assert_equal(0, (0..0).max) assert_equal(nil, (0...0).max) end def test_initialize_twice r = eval("1..2") assert_raise(NameError) { r.instance_eval { initialize 3, 4 } } end def test_uninitialized_range r = Range.allocate s = Marshal.dump(r) r = Marshal.load(s) assert_nothing_raised { r.instance_eval { initialize 5, 6} } end def test_bad_value assert_raise(ArgumentError) { (1 .. :a) } end def test_exclude_end assert(!((0..1).exclude_end?)) assert((0...1).exclude_end?) end def test_eq r = (0..1) assert(r == r) assert(r == (0..1)) assert(r != 0) assert(r != (1..2)) assert(r != (0..2)) assert(r != (0...1)) end def test_eql r = (0..1) assert(r.eql?(r)) assert(r.eql?(0..1)) assert(!r.eql?(0)) assert(!r.eql?(1..2)) assert(!r.eql?(0..2)) assert(!r.eql?(0...1)) end def test_hash assert((0..1).hash.is_a?(Fixnum)) end def test_step a = [] (0..10).step {|x| a << x } assert_equal([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], a) a = [] (0..10).step(2) {|x| a << x } assert_equal([0, 2, 4, 6, 8, 10], a) o = Object.new def o.to_int; 2; end a = [] (0..10).step(o) {|x| a << x } assert_equal([0, 2, 4, 6, 8, 10], a) assert_raise(ArgumentError) { (0..10).step(-1) { } } assert_raise(ArgumentError) { (0..10).step(0) { } } a = [] ("a" .. "z").step(2) {|x| a << x } assert_equal(%w(a c e g i k m o q s u w y), a) a = [] ("a" .. "z").step(2**32) {|x| a << x } assert_equal(["a"], a) a = [] (2**32-1 .. 2**32+1).step(2) {|x| a << x } assert_equal([4294967295, 4294967297], a) zero = (2**32).coerce(0).first assert_raise(ArgumentError) { (2**32-1 .. 2**32+1).step(zero) { } } o1 = Object.new o2 = Object.new def o1.<=>(x); -1; end def o2.<=>(x); 0; end assert_raise(TypeError) { (o1..o2).step(1) { } } class << o1; self; end.class_eval do define_method(:succ) { o2 } end a = [] (o1..o2).step(1) {|x| a << x } assert_equal([o1, o2], a) a = [] (o1...o2).step(1) {|x| a << x } assert_equal([o1], a) end def test_each a = [] (0..10).each {|x| a << x } assert_equal([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], a) o1 = Object.new o2 = Object.new def o1.<=>(x); -1; end def o2.<=>(x); 0; end class << o1; self; end.class_eval do define_method(:succ) { o2 } end r1 = (o1..o2) r2 = (o1...o2) a = [] r1.each {|x| a << x } assert_equal([o1, o2], a) a = [] r2.each {|x| a << x } assert_equal([o1], a) def o2.<=>(x); 1; end a = [] r1.each {|x| a << x } assert_equal([o1], a) def o2.<=>(x); nil; end a = [] r1.each {|x| a << x } assert_equal([o1], a) def o1.<=>(x); nil; end a = [] r2.each {|x| a << x } assert_equal([], a) end def test_begin_end assert_equal(0, (0..1).begin) assert_equal(1, (0..1).end) end def test_first_last assert_equal([0, 1, 2], (0..10).first(3)) assert_equal([8, 9, 10], (0..10).last(3)) end def test_to_s assert_equal("0..1", (0..1).to_s) assert_equal("0...1", (0...1).to_s) end def test_inspect assert_equal("0..1", (0..1).inspect) assert_equal("0...1", (0...1).inspect) end def test_eqq assert((0..10) === 5) assert(!((0..10) === 11)) end def test_include assert(("a".."z").include?("c")) assert(!(("a".."z").include?("5"))) assert(("a"..."z").include?("y")) assert(!(("a"..."z").include?("z"))) assert(!(("a".."z").include?("cc"))) assert((0...10).include?(5)) end def test_cover assert(("a".."z").cover?("c")) assert(!(("a".."z").cover?("5"))) assert(("a"..."z").cover?("y")) assert(!(("a"..."z").cover?("z"))) assert(("a".."z").cover?("cc")) end def test_beg_len o = Object.new assert_raise(TypeError) { [][o] } def o.begin; -10; end assert_raise(TypeError) { [][o] } def o.end; 0; end assert_raise(NoMethodError) { [][o] } def o.exclude_end?; false; end assert_nil([0][o]) assert_raise(RangeError) { [0][o] = 1 } def o.begin; 10; end def o.end; 10; end assert_nil([0][o]) def o.begin; 0; end assert_equal([0], [0][o]) def o.begin; 2; end def o.end; 0; end assert_equal([], [0, 1, 2][o]) end end