diff options
Diffstat (limited to 'trunk/test/ruby/test_numeric.rb')
-rw-r--r-- | trunk/test/ruby/test_numeric.rb | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/trunk/test/ruby/test_numeric.rb b/trunk/test/ruby/test_numeric.rb new file mode 100644 index 0000000000..3db054fdae --- /dev/null +++ b/trunk/test/ruby/test_numeric.rb @@ -0,0 +1,217 @@ +require 'test/unit' + +class TestNumeric < Test::Unit::TestCase + class DummyNumeric < Numeric + end + + def test_coerce + a, b = 1.coerce(2) + assert_equal(Fixnum, a.class) + assert_equal(Fixnum, b.class) + + a, b = 1.coerce(2.0) + assert_equal(Float, a.class) + assert_equal(Float, b.class) + + assert_raise(TypeError) { -Numeric.new } + end + + def test_dummynumeric + a = DummyNumeric.new + + DummyNumeric.class_eval do + def coerce(x); nil; end + end + assert_raise(TypeError) { -a } + assert_nil(1 <=> a) + assert_raise(ArgumentError) { 1 <= a } + + DummyNumeric.class_eval do + def coerce(x); 1.coerce(x); end + end + assert_equal(2, 1 + a) + assert_equal(0, 1 <=> a) + assert(1 <= a) + + DummyNumeric.class_eval do + def coerce(x); [x, 1]; end + end + assert_equal(-1, -a) + + ensure + DummyNumeric.class_eval do + remove_method :coerce + end + end + + def test_numeric + a = Numeric.new + assert_raise(TypeError) { def a.foo; end } + assert_raise(TypeError) { a.dup } + end + + def test_quo + assert_raise(ArgumentError) {DummyNumeric.new.quo(1)} + end + + def test_divmod + DummyNumeric.class_eval do + def /(x); 42.0; end + def %(x); :mod; end + end + + assert_equal(42, DummyNumeric.new.div(1)) + assert_equal(:mod, DummyNumeric.new.modulo(1)) + assert_equal([42, :mod], DummyNumeric.new.divmod(1)) + + assert_kind_of(Integer, 11.divmod(3.5).first, '[ruby-dev:34006]') + + ensure + DummyNumeric.class_eval do + remove_method :/, :% + end + end + + def test_scalar_p + assert(Numeric.new.scalar?) + end + + def test_integer_p + assert(!Numeric.new.integer?) + end + + def test_abs + a = DummyNumeric.new + DummyNumeric.class_eval do + def -@; :ok; end + def <(x); true; end + end + + assert_equal(:ok, a.abs) + + DummyNumeric.class_eval do + def <(x); false; end + end + + assert_equal(a, a.abs) + + ensure + DummyNumeric.class_eval do + remove_method :-@, :< + end + end + + def test_zero_p + DummyNumeric.class_eval do + def ==(x); true; end + end + + assert(DummyNumeric.new.zero?) + + ensure + DummyNumeric.class_eval do + remove_method :== + end + end + + def test_to_int + DummyNumeric.class_eval do + def to_i; :ok; end + end + + assert_equal(:ok, DummyNumeric.new.to_int) + + ensure + DummyNumeric.class_eval do + remove_method :to_i + end + end + + def test_cmp + a = Numeric.new + assert_equal(0, a <=> a) + assert_nil(a <=> :foo) + end + + def test_floor_ceil_round_truncate + DummyNumeric.class_eval do + def to_f; 1.5; end + end + + a = DummyNumeric.new + assert_equal(1, a.floor) + assert_equal(2, a.ceil) + assert_equal(2, a.round) + assert_equal(1, a.truncate) + + DummyNumeric.class_eval do + def to_f; 1.4; end + end + + a = DummyNumeric.new + assert_equal(1, a.floor) + assert_equal(2, a.ceil) + assert_equal(1, a.round) + assert_equal(1, a.truncate) + + DummyNumeric.class_eval do + def to_f; -1.5; end + end + + a = DummyNumeric.new + assert_equal(-2, a.floor) + assert_equal(-1, a.ceil) + assert_equal(-2, a.round) + assert_equal(-1, a.truncate) + + ensure + DummyNumeric.class_eval do + remove_method :to_f + end + end + + def test_step + a = [] + 1.step(10) {|x| a << x } + assert_equal([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], a) + + a = [] + 1.step(10, 2) {|x| a << x } + assert_equal([1, 3, 5, 7, 9], a) + + assert_raise(ArgumentError) { 1.step(10, 1, 0) { } } + assert_raise(ArgumentError) { 1.step(10, 0) { } } + + a = [] + 10.step(1, -2) {|x| a << x } + assert_equal([10, 8, 6, 4, 2], a) + + a = [] + 1.0.step(10.0, 2.0) {|x| a << x } + assert_equal([1.0, 3.0, 5.0, 7.0, 9.0], a) + + a = [] + 1.step(10, 2**32) {|x| a << x } + assert_equal([1], a) + + a = [] + 10.step(1, -(2**32)) {|x| a << x } + assert_equal([10], a) + end + + def test_num2long + assert_raise(TypeError) { 1 & nil } + assert_raise(TypeError) { 1 & 1.0 } + assert_raise(TypeError) { 1 & 2147483648.0 } + assert_raise(TypeError) { 1 & 9223372036854777856.0 } + o = Object.new + def o.to_int; 1; end + assert_equal(1, 1 & o) + end + + def test_eql + assert(1 == 1.0) + assert(!(1.eql?(1.0))) + assert(!(1.eql?(2))) + end +end |