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author | mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-03-25 15:30:56 +0000 |
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committer | mame <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-03-25 15:30:56 +0000 |
commit | 43a2aaea2f307ed50fa059affa797a01ba62320d (patch) | |
tree | 0b7ed70d891e9b3ea994d063faecdf40293d583b /test/ruby/test_rational.rb | |
parent | 2d656b7d2851df5cae8052f906150b01983cb32b (diff) | |
download | ruby-43a2aaea2f307ed50fa059affa797a01ba62320d.tar.gz |
* test/ruby/test_rational.rb: add tests to achieve over 90% test
coverage of rational.c.
* test/ruby/test_complex.rb: ditto for complex.c.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15840 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/ruby/test_rational.rb')
-rw-r--r-- | test/ruby/test_rational.rb | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/test/ruby/test_rational.rb b/test/ruby/test_rational.rb index f039a3c36e..3fefa766b1 100644 --- a/test/ruby/test_rational.rb +++ b/test/ruby/test_rational.rb @@ -686,6 +686,8 @@ class Rational_Test < Test::Unit::TestCase assert_equal(true, Rational(2,1) != Rational(1)) assert_equal(false, Rational(1) == nil) assert_equal(false, Rational(1) == '') + + assert_equal(false, Rational(1,2**100) == 1) end def test_unify @@ -955,6 +957,108 @@ class Rational_Test < Test::Unit::TestCase assert_equal(0.25, Rational(1,2).fdiv(2)) end + def test_zero_div + assert_raise(ZeroDivisionError) { Rational(1, 0) } + assert_raise(ZeroDivisionError) { Rational(1, 1) / 0 } + end + + def test_gcd + assert_equal(0, Rational(0, 2**100)) + end + + def test_unify + f = defined?(Rational::Unify) + Rational.const_set(:Unify, true) unless f + + assert_same(42, Rational(84, 2)) + assert_same(1, Rational(1, 2) + Rational(1, 2)) + + Rational.instance_eval { remove_const(:Unify) } unless f + end + + def test_coerce + r = Rational(7, 3) + assert_equal(Rational(42, 1), r.coerce(42).first) + assert_raise(TypeError) { r.coerce(Object.new) } + + o = Object.new + def o.coerce(x); [x.numerator, x.denominator]; end + assert_equal(10, r + o) + assert_equal(4, r - o) + assert_equal(21, r * o) + assert_equal(2, r / o) + assert_equal(343, r ** o) + assert_equal(1, r <=> o) + + b = 2**100 + def b.<=>(x); 0; end rescue nil + assert_equal(1, r ** b) + b = 2**100 + def b.**(x); -1; end rescue nil + assert_equal(-1, Rational(1, b)**3) + end + + def test_modulo_remainder + assert_equal(Rational(1, 2), Rational(5, 2).modulo(1)) + assert_equal(Rational(1, 2), Rational(5, 2).modulo(2)) + assert_equal(Rational(5, 2), Rational(5, 2).modulo(3)) + assert_equal(Rational(5, 6), Rational(5, 2).modulo(Rational(5, 3))) + assert_equal(Rational(1, 2), Rational(-5, 2).modulo(1)) + assert_equal(Rational(-1, 2), Rational(5, 2).modulo(-1)) + assert_equal(Rational(-1, 2), Rational(-5, 2).modulo(-1)) + + assert_equal(Rational(1, 2), Rational(5, 2).remainder(1)) + assert_equal(Rational(1, 2), Rational(5, 2).remainder(2)) + assert_equal(Rational(5, 2), Rational(5, 2).remainder(3)) + assert_equal(Rational(5, 6), Rational(5, 2).remainder(Rational(5, 3))) + assert_equal(Rational(-1, 2), Rational(-5, 2).remainder(1)) + assert_equal(Rational(1, 2), Rational(5, 2).remainder(-1)) + assert_equal(Rational(-1, 2), Rational(-5, 2).remainder(-1)) + end + + def test_abs + assert_equal(Rational(1, 2), Rational(1, 2).abs) + assert_equal(Rational(1, 2), Rational(-1, 2).abs) + end + + def test_floor_ceil_truncate_round + assert_equal( 2, Rational( 5, 2).floor) + assert_equal(-3, Rational(-5, 2).floor) + assert_equal( 3, Rational( 5, 2).ceil) + assert_equal(-2, Rational(-5, 2).ceil) + assert_equal( 2, Rational( 5, 2).truncate) + assert_equal(-2, Rational(-5, 2).truncate) + assert_equal( 3, Rational( 5, 2).round) + assert_equal(-3, Rational(-5, 2).round) + assert_equal( 1, Rational( 4, 3).round) + assert_equal(-1, Rational(-4, 3).round) + assert_equal( 2, Rational( 5, 3).round) + assert_equal(-2, Rational(-5, 3).round) + end + + def test_convert + assert_equal(Rational(1, 2), Rational(Complex(1, 0), 2)) + assert_raise(RangeError) { Rational(Complex(1, 1), 1) } + assert_equal(Rational(1, 2), Rational(1, Complex(2, 0))) + assert_raise(RangeError) { Rational(1, Complex(2, 1)) } + assert_equal(Rational(1, 2), Rational(0.25, 0.5)) + assert_equal(Rational(1, 2), Rational('1', '2')) + end + + def test_add2 + assert_equal(Rational(2**100, 3), Rational(0, 1) + Rational(2**100, 3)) + assert_equal(Rational(2, 3**100), Rational(0, 1) + Rational(2, 3**100)) + end + + def test_div2 + assert_raise(ZeroDivisionError) { Rational(1, 1) / Rational(0, 1) } + end + + def test_to_f2 + assert_equal(1, Rational(2**5000,3).to_f.infinite?) + assert_equal(0, Rational(1, 2**5000).to_f) + end + def test_fixed_bug if defined?(Rational::Unify) assert_instance_of(Fixnum, Rational(1,2) ** 0) # mathn's bug |