akr	2009-12-22 23:02:13 +0900 (Tue, 22 Dec 2009)

  New Revision: 26151

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=26151

  Log:
    add a test.

  Modified files:
    trunk/test/ruby/test_time.rb

Index: test/ruby/test_time.rb
===================================================================
--- test/ruby/test_time.rb	(revision 26150)
+++ test/ruby/test_time.rb	(revision 26151)
@@ -351,6 +351,22 @@
     assert_equal(T2000 + 1, T2000.succ)
   end
 
+  def test_plus_type
+    t0 = Time.utc(2000,1,1)
+    n0 = t0.to_i
+    n1 = n0+1
+    t1 = Time.at(n1)
+    assert_equal(t1, t0 + 1)
+    assert_equal(t1, t0 + 1.0)
+    assert_equal(t1, t0 + Rational(1,1))
+    assert_equal(t1, t0 + SimpleDelegator.new(1))
+    assert_equal(t1, t0 + SimpleDelegator.new(1.0))
+    assert_equal(t1, t0 + SimpleDelegator.new(Rational(1,1)))
+    assert_raise(TypeError) { t0 + nil }
+    assert_raise(TypeError) { t0 + "1" }
+    assert_raise(TypeError) { t0 + SimpleDelegator.new("1") }
+  end
+
   def test_readers
     assert_equal(0, T2000.sec)
     assert_equal(0, T2000.min)

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