diff options
| author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-02-16 08:34:33 +0000 |
|---|---|---|
| committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-02-16 08:34:33 +0000 |
| commit | f042e5113a34546b1c6641b538b962996f023430 (patch) | |
| tree | 222ffefddae6afa152573849c58711b6e5309383 /test/-ext-/bignum | |
| parent | 6ef6dab36d947d648a556b9f1344b7d84bf60399 (diff) | |
| download | ruby-f042e5113a34546b1c6641b538b962996f023430.tar.gz | |
add tests.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45004 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/-ext-/bignum')
| -rw-r--r-- | test/-ext-/bignum/test_pack.rb | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/-ext-/bignum/test_pack.rb b/test/-ext-/bignum/test_pack.rb index 0614e1046c..f2a3df814e 100644 --- a/test/-ext-/bignum/test_pack.rb +++ b/test/-ext-/bignum/test_pack.rb @@ -212,6 +212,30 @@ class TestBignum < Test::Unit::TestCase } } + 2.upto(16) {|wordsize| + w = wordsize + b = 8*wordsize-1 + n = 2**b + assert_equal([-2, "\x7F"+"\xFF"*(w-2)+"\xFF"], (-n-1).test_pack(1, wordsize, 1, TWOCOMP|MSBYTE_FIRST)) + assert_equal([-1, "\x00"+"\x00"*(w-2)+"\x00"], (-n ).test_pack(1, wordsize, 1, TWOCOMP|MSBYTE_FIRST)) + assert_equal([-1, "\x00"+"\x00"*(w-2)+"\x01"], (-n+1).test_pack(1, wordsize, 1, TWOCOMP|MSBYTE_FIRST)) + assert_equal([+1, "\x7F"+"\xFF"*(w-2)+"\xFF"], (+n-1).test_pack(1, wordsize, 1, TWOCOMP|MSBYTE_FIRST)) + assert_equal([+2, "\x00"+"\x00"*(w-2)+"\x00"], (+n ).test_pack(1, wordsize, 1, TWOCOMP|MSBYTE_FIRST)) + assert_equal([+2, "\x00"+"\x00"*(w-2)+"\x01"], (+n+1).test_pack(1, wordsize, 1, TWOCOMP|MSBYTE_FIRST)) + } + + 2.upto(16) {|wordsize| + w = wordsize + b = 8*wordsize-1 + n = 2**b + assert_equal([-2, "\xFF"+"\xFF"*(w-2)+"\x7F"], (-n-1).test_pack(1, wordsize, 1, TWOCOMP|LSBYTE_FIRST)) + assert_equal([-1, "\x00"+"\x00"*(w-2)+"\x00"], (-n ).test_pack(1, wordsize, 1, TWOCOMP|LSBYTE_FIRST)) + assert_equal([-1, "\x01"+"\x00"*(w-2)+"\x00"], (-n+1).test_pack(1, wordsize, 1, TWOCOMP|LSBYTE_FIRST)) + assert_equal([+1, "\xFF"+"\xFF"*(w-2)+"\x7F"], (+n-1).test_pack(1, wordsize, 1, TWOCOMP|LSBYTE_FIRST)) + assert_equal([+2, "\x00"+"\x00"*(w-2)+"\x00"], (+n ).test_pack(1, wordsize, 1, TWOCOMP|LSBYTE_FIRST)) + assert_equal([+2, "\x01"+"\x00"*(w-2)+"\x00"], (+n+1).test_pack(1, wordsize, 1, TWOCOMP|LSBYTE_FIRST)) + } + end def test_unpack_zero |