From 40a9700ef8fee2237e7675ce00063743687953b2 Mon Sep 17 00:00:00 2001
From: takahashim <maki@rubycolor.org>
Date: Fri, 20 Nov 2015 23:39:45 +0900
Subject: [PATCH] support Numeric#zero? and Numeric#nonzero?

---
 mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb | 12 ++++++++++++
 mrbgems/mruby-numeric-ext/test/numeric.rb       | 10 ++++++++++
 2 files changed, 22 insertions(+)

diff --git a/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb b/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb
index dfc6ba87cc..0bf3c6ab6e 100644
--- a/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb
+++ b/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb
@@ -2,4 +2,16 @@ module Integral
   def div(other)
     self.divmod(other)[0]
   end
+
+  def zero?
+    self == 0
+  end
+
+  def nonzero?
+    if self == 0
+      nil
+    else
+      self
+    end
+  end
 end
diff --git a/mrbgems/mruby-numeric-ext/test/numeric.rb b/mrbgems/mruby-numeric-ext/test/numeric.rb
index 96644da69c..8bead24897 100644
--- a/mrbgems/mruby-numeric-ext/test/numeric.rb
+++ b/mrbgems/mruby-numeric-ext/test/numeric.rb
@@ -16,3 +16,13 @@
 assert('Float#div') do
   assert_float 52, 365.2425.div(7)
 end
+
+assert('Integer#zero?') do
+  assert_equal true, 0.zero?
+  assert_equal false, 1.zero?
+end
+
+assert('Integer#nonzero?') do
+  assert_equal nil, 0.nonzero?
+  assert_equal 1000, 1000.nonzero?
+end