From b4e5bff89dbacfe59219a3430e7c7f2e09a18028 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 19 May 2015 04:10:12 +0000
Subject: numeric.c: Bignum 0 is not positive

* numeric.c (num_positive_p): should false on Bignum 0.
  http://twitter.com/rafaelfranca/status/600509783427391488
  [ruby-core:69173] [Feature #11151]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50538 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_bignum.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'test')

diff --git a/test/ruby/test_bignum.rb b/test/ruby/test_bignum.rb
index 2c6eda0d8e..012a5624d0 100644
--- a/test/ruby/test_bignum.rb
+++ b/test/ruby/test_bignum.rb
@@ -268,6 +268,18 @@ class TestBignum < Test::Unit::TestCase
     assert_equal(2**180, (2**80) * o)
   end
 
+  def test_positive_p
+    assert_predicate(T_ONE, :positive?)
+    assert_not_predicate(T_MONE, :positive?)
+    assert_not_predicate(T_ZERO, :positive?)
+  end
+
+  def test_negative_p
+    assert_not_predicate(T_ONE, :negative?)
+    assert_predicate(T_MONE, :negative?)
+    assert_not_predicate(T_ZERO, :negative?)
+  end
+
   def test_mul_balance
     assert_equal(3**7000, (3**5000) * (3**2000))
   end
-- 
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