More immutability and locking tests.

1 files changed, 29 insertions, 0 deletions

diff --git a/test/ruby/test_io_buffer.rb b/test/ruby/test_io_buffer.rb
index ec10d2e1e6..1bd839e163 100644
--- a/test/ruby/test_io_buffer.rb
+++ b/test/ruby/test_io_buffer.rb
@@ -44,6 +44,19 @@ class TestIOBuffer < Test::Unit::TestCase
     assert buffer.mapped?
   end
 
+  def test_new_immutable
+    buffer = IO::Buffer.new(128, IO::Buffer::INTERNAL|IO::Buffer::IMMUTABLE)
+    assert buffer.immutable?
+
+    assert_raise RuntimeError do
+      buffer.copy("", 0)
+    end
+
+    assert_raise RuntimeError do
+      buffer.copy("!", 1)
+    end
+  end
+
   def test_file_mapped
     buffer = File.open(__FILE__) {|file| IO::Buffer.map(file)}
     assert_include buffer.to_str, "Hello World"
@@ -103,6 +116,22 @@ class TestIOBuffer < Test::Unit::TestCase
     # end
   end
 
+  def test_locked
+    buffer = IO::Buffer.new(128, IO::Buffer::INTERNAL|IO::Buffer::LOCKED)
+
+    assert_raise RuntimeError do
+      buffer.resize(256, 0)
+    end
+
+    assert_equal 128, buffer.size
+
+    assert_raise RuntimeError do
+      buffer.free
+    end
+
+    assert_equal 128, buffer.size
+  end
+
   def test_invalidation
     input, output = IO.pipe