* test/date/test_date.rb (TestDate#test_coerce):

test for [ruby-core:35127].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31414 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue May  3 18:23:57 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
+
+	* test/date/test_date.rb (TestDate#test_coerce):
+	  test for [ruby-core:35127].
+
 Tue May  3 04:27:53 2011  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* thread.c (rb_thread_select): preserve errno if no error

test/date/test_date.rb

@@ -113,6 +113,27 @@ class TestDate < Test::Unit::TestCase
     assert_equal(d2, dt2)
   end
 
+  def test_coerce
+    bug4375 = '[ruby-core:35127]'
+    d = Date.jd(0)
+    d2 = Date.jd(1)
+    others = [1, d2, Date::Infinity.new, nil, Object.new]
+    assert_nothing_raised(bug4375) {
+      others.each do |o|
+        case o
+        when d
+          flunk("expected not to match")
+        end
+      end
+    }
+    assert_nothing_raised(bug4375) {
+      case d
+      when *others
+        flunk("expected not to match")
+      end
+    }
+  end
+
   def test_hash
     h = {}
     h[Date.new(1999,5,23)] = 0