1 files changed, 179 insertions, 0 deletions
diff --git a/js/src/tests/non262/String/utf8-encode.js b/js/src/tests/non262/String/utf8-encode.js
new file mode 100644
index 0000000000..78b6afae8a
--- /dev/null
+++ b/js/src/tests/non262/String/utf8-encode.js
@@ -0,0 +1,179 @@
+// |reftest| skip-if(!xulRuntime.shell)
+
+var BUGNUMBER = 1561567;
+var summary = 'JS_EncodeStringToUTF8BufferPartial - Encode string as UTF-8 into a byte array';
+
+print(BUGNUMBER + ": " + summary);
+
+var concat = [
+  {
+    head: "a",
+    tail: "b",
+    expected: "ab",
+    name: "Latin1 and Latin1",
+  },
+  {
+    head: "α",
+    tail: "β",
+    expected: "αβ",
+    name: "UTF-16 and UTF-16",
+  },
+  {
+    head: "a",
+    tail: "β",
+    expected: "aβ",
+    name: "Latin1 and UTF-16",
+  },
+  {
+    head: "α",
+    tail: "b",
+    expected: "αb",
+    name: "UTF-16 and Latin1",
+  },
+  {
+    head: "\uD83D",
+    tail: "\uDE03",
+    expected: "\uD83D\uDE03",
+    name: "Surrogate pair",
+  },
+  {
+    head: "a\uD83D",
+    tail: "\uDE03b",
+    expected: "a\uD83D\uDE03b",
+    name: "Surrogate pair with prefix and suffix",
+  },
+  {
+    head: "\uD83D",
+    tail: "b",
+    expected: "\uFFFDb",
+    name: "Unpaired high surrogate and Latin1",
+  },
+  {
+    head: "a\uD83D",
+    tail: "b",
+    expected: "a\uFFFDb",
+    name: "Prefixed unpaired high surrogate and Latin1",
+  },
+  {
+    head: "\uD83D",
+    tail: "β",
+    expected: "\uFFFDβ",
+    name: "Unpaired high surrogate and UTF-16",
+  },
+  {
+    head: "a\uD83D",
+    tail: "β",
+    expected: "a\uFFFDβ",
+    name: "Prefixed unpaired high surrogate and UTF-16",
+  },
+
+  {
+    head: "\uDE03",
+    tail: "b",
+    expected: "\uFFFDb",
+    name: "Unpaired low surrogate and Latin1",
+  },
+  {
+    head: "a\uDE03",
+    tail: "b",
+    expected: "a\uFFFDb",
+    name: "Prefixed unpaired low surrogate and Latin1",
+  },
+  {
+    head: "\uDE03",
+    tail: "β",
+    expected: "\uFFFDβ",
+    name: "Unpaired low surrogate and UTF-16",
+  },
+  {
+    head: "a\uDE03",
+    tail: "β",
+    expected: "a\uFFFDβ",
+    name: "Prefixed unpaired low surrogate and UTF-16",
+  },
+
+  {
+    head: "a",
+    tail: "\uDE03",
+    expected: "a\uFFFD",
+    name: "Latin1 and unpaired low surrogate",
+  },
+  {
+    head: "a",
+    tail: "\uDE03b",
+    expected: "a\uFFFDb",
+    name: "Latin1 and suffixed unpaired low surrogate",
+  },
+  {
+    head: "α",
+    tail: "\uDE03",
+    expected: "α\uFFFD",
+    name: "UTF-16 and unpaired low surrogate",
+  },
+  {
+    head: "α",
+    tail: "\uDE03b",
+    expected: "α\uFFFDb",
+    name: "UTF-16 and suffixed unpaired low surrogate",
+  },
+
+  {
+    head: "a",
+    tail: "\uD83D",
+    expected: "a\uFFFD",
+    name: "Latin1 and unpaired high surrogate",
+  },
+  {
+    head: "a",
+    tail: "\uD83Db",
+    expected: "a\uFFFDb",
+    name: "Latin1 and suffixed unpaired high surrogate",
+  },
+  {
+    head: "α",
+    tail: "\uD83D",
+    expected: "α\uFFFD",
+    name: "UTF-16 and unpaired high surrogate",
+  },
+  {
+    head: "α",
+    tail: "\uD83Db",
+    expected: "α\uFFFDb",
+    name: "UTF-16 and suffixed unpaired high surrogate",
+  },
+];
+
+assertEq(isSameCompartment(newRope, this), true);
+
+function checkUtf8Equal(first, second) {
+  var firstBuffer = new Uint8Array(first.length * 3);
+  var secondBuffer = new Uint8Array(second.length * 3);
+
+  var [firstRead, firstWritten] = encodeAsUtf8InBuffer(first, firstBuffer);
+  var [secondRead, secondWritten] = encodeAsUtf8InBuffer(second, secondBuffer);
+
+  assertEq(first.length, firstRead);
+  assertEq(second.length, secondRead);
+
+  assertEq(firstWritten, secondWritten);
+
+  for (var i = 0; i < firstWritten; ++i) {
+    assertEq(firstBuffer[i], secondBuffer[i]);
+  }
+}
+
+concat.forEach(function(t) {
+  var rope = newRope(t.head, t.tail);
+  checkUtf8Equal(rope, t.expected);
+});
+
+var ab = newRope("a", "b");
+var abc = newRope(ab, "c");
+var ef = newRope("e", "f");
+var def = newRope("d", ef);
+var abcdef = newRope(abc, def);
+var abcdefab = newRope(abcdef, ab);
+checkUtf8Equal(abcdefab, "abcdefab");
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);