146 lines
3.8 KiB
Ruby
146 lines
3.8 KiB
Ruby
# frozen_string_literal: false
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require 'test/unit'
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class TestComparable < Test::Unit::TestCase
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def setup
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@o = Object.new
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@o.extend(Comparable)
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end
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def cmp(b)
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class << @o; self; end.class_eval {
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undef :<=>
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define_method(:<=>, b)
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}
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end
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def test_equal
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cmp->(x) do 0; end
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assert_equal(true, @o == nil)
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cmp->(x) do 1; end
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assert_equal(false, @o == nil)
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cmp->(x) do nil; end
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assert_equal(false, @o == nil)
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cmp->(x) do raise NotImplementedError, "Not a RuntimeError" end
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assert_raise(NotImplementedError) { @o == nil }
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bug7688 = 'Comparable#== should not silently rescue' \
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'any Exception [ruby-core:51389] [Bug #7688]'
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cmp->(x) do raise StandardError end
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assert_raise(StandardError, bug7688) { @o == nil }
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cmp->(x) do "bad value"; end
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assert_raise(ArgumentError, bug7688) { @o == nil }
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end
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def test_gt
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cmp->(x) do 1; end
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assert_equal(true, @o > nil)
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cmp->(x) do 0; end
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assert_equal(false, @o > nil)
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cmp->(x) do -1; end
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assert_equal(false, @o > nil)
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end
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def test_ge
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cmp->(x) do 1; end
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assert_equal(true, @o >= nil)
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cmp->(x) do 0; end
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assert_equal(true, @o >= nil)
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cmp->(x) do -1; end
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assert_equal(false, @o >= nil)
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end
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def test_lt
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cmp->(x) do 1; end
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assert_equal(false, @o < nil)
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cmp->(x) do 0; end
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assert_equal(false, @o < nil)
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cmp->(x) do -1; end
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assert_equal(true, @o < nil)
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end
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def test_le
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cmp->(x) do 1; end
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assert_equal(false, @o <= nil)
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cmp->(x) do 0; end
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assert_equal(true, @o <= nil)
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cmp->(x) do -1; end
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assert_equal(true, @o <= nil)
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end
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def test_between
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cmp->(x) do 0 <=> x end
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assert_equal(false, @o.between?(1, 2))
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assert_equal(false, @o.between?(-2, -1))
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assert_equal(true, @o.between?(-1, 1))
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assert_equal(true, @o.between?(0, 0))
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end
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def test_clamp
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cmp->(x) do 0 <=> x end
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assert_equal(1, @o.clamp(1, 2))
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assert_equal(-1, @o.clamp(-2, -1))
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assert_equal(@o, @o.clamp(-1, 3))
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assert_equal(1, @o.clamp(1, 1))
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assert_equal(@o, @o.clamp(0, 0))
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assert_raise_with_message(ArgumentError, 'min argument must be smaller than max argument') {
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@o.clamp(2, 1)
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}
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end
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def test_clamp_with_range
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cmp->(x) do 0 <=> x end
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assert_equal(1, @o.clamp(1..2))
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assert_equal(-1, @o.clamp(-2..-1))
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assert_equal(@o, @o.clamp(-1..3))
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assert_equal(1, @o.clamp(1..1))
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assert_equal(@o, @o.clamp(0..0))
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assert_equal(1, @o.clamp(1..))
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assert_equal(1, @o.clamp(1...))
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assert_equal(@o, @o.clamp(0..))
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assert_equal(@o, @o.clamp(0...))
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assert_equal(@o, @o.clamp(..2))
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assert_equal(-1, @o.clamp(-2..-1))
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assert_equal(@o, @o.clamp(-2..0))
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assert_equal(@o, @o.clamp(-2..))
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assert_equal(@o, @o.clamp(-2...))
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exc = [ArgumentError, 'cannot clamp with an exclusive range']
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assert_raise_with_message(*exc) {@o.clamp(1...2)}
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assert_raise_with_message(*exc) {@o.clamp(0...2)}
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assert_raise_with_message(*exc) {@o.clamp(-1...0)}
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assert_raise_with_message(*exc) {@o.clamp(...2)}
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assert_raise_with_message(ArgumentError, 'min argument must be smaller than max argument') {
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@o.clamp(2..1)
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}
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end
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def test_err
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assert_raise(ArgumentError) { 1.0 < nil }
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assert_raise(ArgumentError) { 1.0 < Object.new }
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e = EnvUtil.labeled_class("E\u{30a8 30e9 30fc}")
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assert_raise_with_message(ArgumentError, /E\u{30a8 30e9 30fc}/) {
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1.0 < e.new
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}
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end
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def test_inversed_compare
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bug7870 = '[ruby-core:52305] [Bug #7870]'
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assert_nothing_raised(SystemStackError, bug7870) {
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assert_nil(Time.new <=> "")
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}
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end
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def test_no_cmp
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bug9003 = '[ruby-core:57736] [Bug #9003]'
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assert_nothing_raised(SystemStackError, bug9003) {
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@o <=> @o.dup
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}
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end
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end
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