mrkn	2019-01-06 00:09:44 +0900 (Sun, 06 Jan 2019)

  New Revision: 66726

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=66726

  Log:
    test/ruby/test_range.rb: add assertions
    
    Add assertions of Range#first and Range#last to examine the type
    conversion of the arguments and the negative value check.

  Modified files:
    trunk/test/ruby/test_range.rb
Index: test/ruby/test_range.rb
===================================================================
--- test/ruby/test_range.rb	(revision 66725)
+++ test/ruby/test_range.rb	(revision 66726)
@@ -435,6 +435,19 @@ class TestRange < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_range.rb#L435
     assert_equal("a", ("a"..nil).first)
     assert_raise(RangeError) { (0..nil).last }
     assert_raise(RangeError) { (0..nil).last(3) }
+
+    assert_equal([0, 1, 2], (0..10).first(3.0))
+    assert_equal([8, 9, 10], (0..10).last(3.0))
+    assert_raise(TypeError) { (0..10).first("3") }
+    assert_raise(TypeError) { (0..10).last("3") }
+    class << (o = Object.new)
+      def to_int; 3; end
+    end
+    assert_equal([0, 1, 2], (0..10).first(o))
+    assert_equal([8, 9, 10], (0..10).last(o))
+
+    assert_raise(ArgumentError) { (0..10).first(-1) }
+    assert_raise(ArgumentError) { (0..10).last(-1) }
   end
 
   def test_to_s

--
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