add test for Hash#dup

7ab05067 · Li Yazhou · adbf1eba · 7ab05067
Commit 7ab05067 authored Feb 14, 2014 by Li Yazhou
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test/t/hash.rb test/t/hash.rb +7 -0

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--- a/test/t/hash.rb
+++ b/test/t/hash.rb
@@ -34,6 +34,13 @@ assert('Hash#clear', '15.2.13.4.4') do
  assert_equal({ }, a)
 end

+assert('Hash#dup') do
+  a = { 'a' => 1 }
+  b = a.dup
+  a['a'] = 2
+  assert_equal(b, {'a' => 1})
+end
+
 assert('Hash#default', '15.2.13.4.5') do
  a = Hash.new
  b = Hash.new('abc')