1 files changed, 68 insertions, 0 deletions
diff --git a/test/ruby/test_utf16.rb b/test/ruby/test_utf16.rb
new file mode 100644
index 0000000000..807f8afa6f
--- /dev/null
+++ b/test/ruby/test_utf16.rb
@@ -0,0 +1,68 @@
+require 'test/unit'
+
+class TestM17N < Test::Unit::TestCase
+  def encdump(str)
+    d = str.dump
+    if /\.force_encoding\("[A-Za-z0-9.:_+-]*"\)\z/ =~ d
+      d
+    else
+      "#{d}.force_encoding(#{str.encoding.name.dump})"
+    end
+  end
+
+  # tests start
+
+  def test_utf16be_valid_encoding
+    s = "\xd8\x00\xd8\x00".force_encoding("utf-16be")
+    assert_equal(false, s.valid_encoding?, "#{encdump s}.valid_encoding?")
+  end
+
+  def test_strftime
+    s = "aa".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "Time.now.strftime(#{encdump s})") { Time.now.strftime(s) }
+  end
+
+  def test_intern
+    s = "aaaa".force_encoding("utf-16be")
+    assert_equal(s.encoding, s.intern.to_s.encoding, "#{encdump s}.intern.to_s.encoding")
+  end
+
+  def test_compatible
+    s1 = "aa".force_encoding("utf-16be")
+    s2 = "z".force_encoding("us-ascii")
+    assert_nil(Encoding.compatible?(s1, s2), "Encoding.compatible?(#{encdump s1}, #{encdump s2})")
+  end
+
+  def test_end_with
+    s1 = "ab".force_encoding("utf-16be")
+    s2 = "b".force_encoding("utf-16be")
+    assert_equal(false, s1.end_with?(s2), "#{encdump s1}.end_with?(#{encdump s2})")
+  end
+
+  def test_hex
+    s1 = "f\0f\0".force_encoding("utf-16le")
+    assert_equal(255, s1.hex, "#{encdump s1}.hex")
+  end
+
+  def test_count
+    s1 = "aa".force_encoding("utf-16be")
+    s2 = "aa"
+    assert_raise(ArgumentError, "#{encdump s1}.count(#{encdump s2})") {
+      s1.count(s2)
+    }
+  end
+
+  def test_plus
+    s1 = "a".force_encoding("us-ascii")
+    s2 = "aa".force_encoding("utf-16be")
+    assert_raise(ArgumentError, "#{encdump s1} + #{encdump s2}") {
+      s1 + s2
+    }
+  end
+
+  def test_encoding_find
+    assert_raise(ArgumentError) {
+      Encoding.find("utf-8".force_encoding("utf-16be"))
+    }
+  end
+end