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Support two to_r-responding args in Rational()

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* rational.c (nurat_s_convert): call `to_r` to convert non-Numeric
  objects also if argc == 2 in Rational().

* test/ruby/test_rational.rb: add tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62598 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mrkn 2018-02-27 16:45:09 +00:00
parent 71ee64a5b1
commit fe2a6f65b1
2 changed files with 31 additions and 0 deletions
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25
test/ruby/test_rational.rb
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@ -120,7 +120,32 @@ class Rational_Test < Test::Unit::TestCase
assert_raise_with_message(ArgumentError, /\u{221a 2668}/) {
Rational("\u{221a 2668}")
}
assert_raise(TypeError){Rational(Object.new)}
assert_raise(TypeError){Rational(Object.new, Object.new)}
assert_raise(TypeError){Rational(1, Object.new)}
o = Object.new
def o.to_r; 1/42r; end
assert_equal(1/42r, Rational(o))
assert_equal(1/84r, Rational(o, 2))
assert_equal(42, Rational(1, o))
assert_equal(1, Rational(o, o))
o = Object.new
def o.to_r; nil; end
assert_raise(TypeError) { Rational(o) }
assert_raise(TypeError) { Rational(o, 2) }
assert_raise(TypeError) { Rational(1, o) }
assert_raise(TypeError) { Rational(o, o) }
o = Object.new
def o.to_r; raise; end
assert_raise(RuntimeError) { Rational(o) }
assert_raise(RuntimeError) { Rational(o, 2) }
assert_raise(RuntimeError) { Rational(1, o) }
assert_raise(RuntimeError) { Rational(o, o) }
assert_raise(ArgumentError){Rational()}
assert_raise(ArgumentError){Rational(1,2,3)}