1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/Segmenter/grapheme-latin1.js b/js/src/tests/non262/Intl/Segmenter/grapheme-latin1.js
new file mode 100644
index 0000000000..3b54c02236
--- /dev/null
+++ b/js/src/tests/non262/Intl/Segmenter/grapheme-latin1.js
@@ -0,0 +1,37 @@
+// |reftest| slow skip-if(!this.hasOwnProperty('Intl')||!this.Intl.Segmenter)
+
+// CRLF should be the only compound grapheme for Latin-1 strings.
+
+let segmenter = new Intl.Segmenter("en", {granularity: "grapheme"});
+
+for (let i = 0; i <= 0xff; ++i) {
+  for (let j = 0; j <= 0xff; ++j) {
+    let string = String.fromCodePoint(i, j);
+    let segments = segmenter.segment(string);
+
+    let data1 = segments.containing(0);
+    let data2 = segments.containing(1);
+    let graphemes = [...segments];
+
+    if (i === "\r".charCodeAt(0) && j === "\n".charCodeAt(0)) {
+      assertEq(data1.index, 0);
+      assertEq(data1.segment, "\r\n");
+
+      assertEq(data2.index, 0);
+      assertEq(data2.segment, "\r\n");
+
+      assertEq(graphemes.length, 1);
+    } else {
+      assertEq(data1.index, 0);
+      assertEq(data1.segment, String.fromCodePoint(i));
+
+      assertEq(data2.index, 1);
+      assertEq(data2.segment, String.fromCodePoint(j));
+
+      assertEq(graphemes.length, 2);
+    }
+  }
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0);