diff options
| author | Yusuke Endoh <mame@ruby-lang.org> | 2020-10-12 13:42:48 +0900 |
|---|---|---|
| committer | Yusuke Endoh <mame@ruby-lang.org> | 2020-10-12 13:42:48 +0900 |
| commit | 8a39e6d6539bd37100cbbfb88916b853f444f771 (patch) | |
| tree | 5ea6f50cfa0f2cb92c4e7f6da341bed41e1105c6 /test | |
| parent | 1336698294250ec78b4d33e0a52f8afb55e987d3 (diff) | |
bignum.c (rb_int_powm): Integer#pow(0, 1) should return 0
... instead of 1 because it requires "modulo 1". [Bug #17257]
Diffstat (limited to 'test')
| -rw-r--r-- | test/ruby/test_numeric.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/ruby/test_numeric.rb b/test/ruby/test_numeric.rb index 7ea02fdcbf..0fcf385c0d 100644 --- a/test/ruby/test_numeric.rb +++ b/test/ruby/test_numeric.rb @@ -435,6 +435,26 @@ class TestNumeric < Test::Unit::TestCase assert_equal(12, 12.pow(1, 10000000001), '[Bug #14259]') assert_equal(12, 12.pow(1, 10000000002), '[Bug #14259]') assert_equal(17298641040, 12.pow(72387894339363242, 243682743764), '[Bug #14259]') + + integers = [-2, -1, 0, 1, 2, 3, 6, 1234567890123456789] + integers.each do |i| + assert_equal(0, i.pow(0, 1), '[Bug #17257]') + assert_equal(1, i.pow(0, 2)) + assert_equal(1, i.pow(0, 3)) + assert_equal(1, i.pow(0, 6)) + assert_equal(1, i.pow(0, 1234567890123456789)) + + assert_equal(0, i.pow(0, -1)) + assert_equal(-1, i.pow(0, -2)) + assert_equal(-2, i.pow(0, -3)) + assert_equal(-5, i.pow(0, -6)) + assert_equal(-1234567890123456788, i.pow(0, -1234567890123456789)) + end + + assert_equal(0, 0.pow(2, 1)) + assert_equal(0, 0.pow(3, 1)) + assert_equal(0, 2.pow(3, 1)) + assert_equal(0, -2.pow(3, 1)) end end |