* parse.y: patch, based on Nobu's, work to support \u escapes

    also modifications for better coderange detection
* test/ruby/test_unicode_escapes.rb: test cases
* test/ruby/test_mixed_unicode_escapes.rb: mixed encoding test cases



git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@13836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 25 insertions, 0 deletions

diff --git a/test/ruby/test_mixed_unicode_escapes.rb b/test/ruby/test_mixed_unicode_escapes.rb
new file mode 100644
index 000000000..e80e6fb14
--- /dev/null
+++ b/test/ruby/test_mixed_unicode_escapes.rb
@@ -0,0 +1,25 @@
+# -*- coding: sjis -*-
+# This test is in a differnt file than TestUnicodeEscapes
+# So that we can have a different coding comment above
+
+require 'test/unit'
+
+class TestMixedUnicodeEscape < Test::Unit::TestCase
+  def test_basic
+    # Unicode escapes do work in an sjis encoded file, but only
+    # if they don't contain other multi-byte chars
+    assert_equal("A", "\u0041")
+    # 8-bit character escapes are okay.
+    assert_equal("B\xFF", "\u0042\xFF")
+
+    # sjis mb chars mixed with Unicode shound not work
+    assert_raise(SyntaxError) { eval %q("�\u1234")}
+    assert_raise(SyntaxError) { eval %q("\u{1234}�")}
+
+    # String interpolation turns into an expression and we get
+    # a different kind of error, but we still can't mix these
+    assert_raise(ArgumentError) { eval %q("\u{1234}#{nil}�")}
+    assert_raise(ArgumentError) { eval %q("�#{nil}\u1234")}
+
+  end
+end