1 files changed, 59 insertions, 0 deletions
diff --git a/test/-ext-/string/test_coderange.rb b/test/-ext-/string/test_coderange.rb
new file mode 100644
index 0000000000..83cebf19c0
--- /dev/null
+++ b/test/-ext-/string/test_coderange.rb
@@ -0,0 +1,59 @@
+# coding: ascii-8bit
+require 'test/unit'
+require "-test-/string/string"
+require "rbconfig/sizeof"
+
+class Test_StringCoderange < Test::Unit::TestCase
+  def setup
+    @sizeof_voidp = RbConfig::SIZEOF["void*"]
+    @a8 = Encoding::ASCII_8BIT
+    @a7 = Encoding::US_ASCII
+    @u8 = Encoding::UTF_8
+  end
+
+  def test_ascii8bit
+    enc = @a8
+    str = "a"
+    str.force_encoding(enc)
+    assert_equal :"7bit", Bug::String.new(str).coderange_scan
+
+    str = "a\xBE".force_encoding(enc)
+    assert_equal :valid, Bug::String.new(str).coderange_scan
+  end
+
+  def test_usascii
+    enc = @a7
+    str = "a"
+    str.force_encoding(enc)
+    assert_equal :"7bit", Bug::String.new(str).coderange_scan
+
+    str = "a" * (@sizeof_voidp * 2)
+    str << "\xBE"
+    str.force_encoding(enc)
+    assert_equal :broken, Bug::String.new(str).coderange_scan
+  end
+
+  def test_utf8
+    enc = @u8
+    str = "a"
+    str.force_encoding(enc)
+    assert_equal :"7bit", Bug::String.new(str).coderange_scan
+
+    str = "a" * (@sizeof_voidp * 3)
+    str << "aa\xC2\x80"
+    str.force_encoding(enc)
+    assert_equal :valid, Bug::String.new(str).coderange_scan
+
+    str = "a" * (@sizeof_voidp * 2)
+    str << "\xC2\x80"
+    str << "a" * (@sizeof_voidp * 2)
+    str.force_encoding(enc)
+    assert_equal :valid, Bug::String.new(str).coderange_scan
+
+    str = "a" * (@sizeof_voidp * 2)
+    str << "\xC1\x80"
+    str << "a" * (@sizeof_voidp * 2)
+    str.force_encoding(enc)
+    assert_equal :broken, Bug::String.new(str).coderange_scan
+  end
+end