* test/ruby/test_numeric.rb (test_nonzero_p): added test for String#nonzero?

[fix GH-1187]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53440 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Jan  5 21:32:26 2016  Kuniaki IGARASHI  <igaiga@gmail.com>
+
+	* test/ruby/test_numeric.rb (test_nonzero_p): added test for String#nonzero?
+	  [fix GH-1187]
+
 Tue Jan  5 11:47:23 2016  Damir Gaynetdinov  <damir.gaynetdinov@gmail.com>
 
 	* doc/marshal.rdoc: Clarify object references example, that the

test/ruby/test_numeric.rb

@@ -147,6 +147,18 @@ class TestNumeric < Test::Unit::TestCase
     assert_predicate(a, :zero?)
   end
 
+  def test_nonzero_p
+    a = Class.new(Numeric) do
+      def zero?; true; end
+    end.new
+    assert_nil(a.nonzero?)
+
+    a = Class.new(Numeric) do
+      def zero?; false; end
+    end.new
+    assert_equal(a, a.nonzero?)
+  end
+
   def test_positive_p
     a = Class.new(Numeric) do
       def >(x); true; end