1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testUTF8.cpp b/js/src/jsapi-tests/testUTF8.cpp
new file mode 100644
index 0000000000..3c6f242734
--- /dev/null
+++ b/js/src/jsapi-tests/testUTF8.cpp
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Range.h"
+
+#include "jsapi.h"
+
+#include "js/CharacterEncoding.h"
+#include "jsapi-tests/tests.h"
+
+BEGIN_TEST(testUTF8_badUTF8) {
+  static const char badUTF8[] = "...\xC0...";
+  JSString* str = JS_NewStringCopyZ(cx, badUTF8);
+  CHECK(str);
+  char16_t ch;
+  if (!JS_GetStringCharAt(cx, str, 3, &ch)) {
+    return false;
+  }
+  CHECK(ch == 0x00C0);
+  return true;
+}
+END_TEST(testUTF8_badUTF8)
+
+BEGIN_TEST(testUTF8_bigUTF8) {
+  static const char bigUTF8[] = "...\xFB\xBF\xBF\xBF\xBF...";
+  JSString* str = JS_NewStringCopyZ(cx, bigUTF8);
+  CHECK(str);
+  char16_t ch;
+  if (!JS_GetStringCharAt(cx, str, 3, &ch)) {
+    return false;
+  }
+  CHECK(ch == 0x00FB);
+  return true;
+}
+END_TEST(testUTF8_bigUTF8)
+
+BEGIN_TEST(testUTF8_badSurrogate) {
+  static const char16_t badSurrogate[] = {'A', 'B', 'C', 0xDEEE, 'D', 'E', 0};
+  mozilla::Range<const char16_t> tbchars(badSurrogate, js_strlen(badSurrogate));
+  JS::Latin1CharsZ latin1 = JS::LossyTwoByteCharsToNewLatin1CharsZ(cx, tbchars);
+  CHECK(latin1);
+  CHECK(latin1[3] == 0x00EE);
+  return true;
+}
+END_TEST(testUTF8_badSurrogate)