1 files changed, 15 insertions, 0 deletions
diff --git a/jni/ruby/test/-ext-/string/test_modify_expand.rb b/jni/ruby/test/-ext-/string/test_modify_expand.rb
new file mode 100644
index 0000000..34b7be7
--- /dev/null
+++ b/jni/ruby/test/-ext-/string/test_modify_expand.rb
@@ -0,0 +1,15 @@
+require 'test/unit'
+require "-test-/string/string"
+
+class Test_StringModifyExpand < Test::Unit::TestCase
+  def test_modify_expand_memory_leak
+    assert_no_memory_leak(["-r-test-/string/string"],
+                          <<-PRE, <<-CMD, "rb_str_modify_expand()", limit: 2.5)
+      s=Bug::String.new
+    PRE
+      size = $initial_size
+      10.times{s.modify_expand!(size)}
+      s.replace("")
+    CMD
+  end
+end