diff options
author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-03-03 15:57:15 +0000 |
---|---|---|
committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-03-03 15:57:15 +0000 |
commit | 294f45b0fc23b91bf5291fd2936f2076f375e467 (patch) | |
tree | 2abb7f737521889c80d5c6230eaede1bd353211f /test/test_prime.rb | |
parent | 27cc677088c21785815b1c137ec8e65e51c2dc83 (diff) |
* lib/prime.rb (Prime::prime?): used to return a wrong answer.
[ruby-core:22646].
* test/test_prime.rb (test_prime?): test case for [ruby-core:22646].
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22741 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/test_prime.rb')
-rw-r--r-- | test/test_prime.rb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/test_prime.rb b/test/test_prime.rb index aca5109689..0dad7cf987 100644 --- a/test/test_prime.rb +++ b/test/test_prime.rb @@ -89,6 +89,11 @@ class TestPrime < Test::Unit::TestCase end end + def test_default_instance_does_not_have_compatibility_methods + assert !Prime.instance.respond_to?(:succ) + assert !Prime.instance.respond_to?(:next) + end + class TestInteger < Test::Unit::TestCase def test_prime_division pd = PRIMES.inject(&:*).prime_division @@ -100,6 +105,10 @@ class TestPrime < Test::Unit::TestCase end def test_prime? + # zero and unit + assert !0.prime? + assert !1.prime? + # small primes assert 2.prime? assert 3.prime? @@ -121,6 +130,12 @@ class TestPrime < Test::Unit::TestCase # factorial assert !(2...100).inject(&:*).prime? + + # negative + assert !-1.prime? + assert -2.prime? + assert -3.prime? + assert !-4.prime? end end end |