naruse	2017-12-03 21:06:16 +0900 (Sun, 03 Dec 2017)

  New Revision: 60993

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60993

  Log:
    Add test for Bug::String.buf_new

  Modified files:
    trunk/test/-ext-/string/test_external_new.rb
Index: test/-ext-/string/test_external_new.rb
===================================================================
--- test/-ext-/string/test_external_new.rb	(revision 60992)
+++ test/-ext-/string/test_external_new.rb	(revision 60993)
@@ -3,6 +3,12 @@ require 'test/unit' https://github.com/ruby/ruby/blob/trunk/test/-ext-/string/test_external_new.rb#L3
 require '-test-/string'
 
 class Test_StringExternalNew < Test::Unit::TestCase
+  def test_buf_new
+    assert_operator(0, :<=, Bug::String.capacity(Bug::String.buf_new(0)))
+    assert_operator(127, :<=, Bug::String.capacity(Bug::String.buf_new(127)))
+    assert_operator(128, :<=, Bug::String.capacity(Bug::String.buf_new(128)))
+  end
+
   def test_external_new_with_enc
     Encoding.list.each do |enc|
       assert_equal(enc, Bug::String.external_new(0, enc).encoding)

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