1 files changed, 54 insertions, 0 deletions
diff --git a/trunk/test/ruby/test_encoding.rb b/trunk/test/ruby/test_encoding.rb
new file mode 100644
index 0000000000..24000796fa
--- /dev/null
+++ b/trunk/test/ruby/test_encoding.rb
@@ -0,0 +1,54 @@
+require 'test/unit'
+
+class TestEncoding < Test::Unit::TestCase
+
+  # Test basic encoding methods: list, find, name
+  def test_encoding
+    encodings = Encoding.list
+    assert_equal(encodings.empty?, false)
+
+    encodings.each do |e|
+      assert_equal(e, Encoding.find(e.name))
+      assert_equal(e, Encoding.find(e.name.upcase))
+      assert_equal(e, Encoding.find(e.name.capitalize))
+      assert_equal(e, Encoding.find(e.name.downcase))
+    end
+  end
+
+  # Test that Encoding objects can't be copied
+  # And that they can be compared by object_id
+  def test_singleton
+    encodings = Encoding.list
+    encodings.each do |e|
+      assert_raise(TypeError) { e.dup }
+      assert_raise(TypeError) { e.clone }
+      assert_equal(e.object_id, Marshal.load(Marshal.dump(e)).object_id)
+    end    
+  end
+
+  def test_find
+    assert_raise(ArgumentError) { Encoding.find("foobarbazqux") }
+  end
+
+  def test_dummy_p
+    assert_equal(true, Encoding::ISO_2022_JP.dummy?)
+    assert_equal(false, Encoding::UTF_8.dummy?)
+  end
+
+  def test_name_list
+    assert_instance_of(Array, Encoding.name_list)
+    Encoding.name_list.each do |x|
+      assert_instance_of(String, x)
+    end
+  end
+
+  def test_aliases
+    assert_instance_of(Hash, Encoding.aliases)
+    Encoding.aliases.each do |k, v|
+      assert(Encoding.name_list.include?(k))
+      assert(Encoding.name_list.include?(v))
+      assert_instance_of(String, k)
+      assert_instance_of(String, v)
+    end
+  end
+end