1 files changed, 69 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/latin1/startsWith-endsWith.js b/js/src/jit-test/tests/latin1/startsWith-endsWith.js
new file mode 100644
index 0000000000..eb49bea165
--- /dev/null
+++ b/js/src/jit-test/tests/latin1/startsWith-endsWith.js
@@ -0,0 +1,69 @@
+function toLatin1(s) {
+    assertEq(isLatin1(s), true);
+    return s;
+}
+function testStartsWith() {
+    var s1 = toLatin1("abc\u0099def");
+    var s2 = toLatin1("abc\u0099d");
+    var s3 = toLatin1("abc\u0098d");
+    var s4 = toLatin1("bc\u0099");
+
+    // Latin1 + Latin1
+    assertEq(s1.startsWith(s2), true);
+    assertEq(s1.startsWith(s3), false);
+    assertEq(s1.startsWith(s4), false);
+    assertEq(s1.startsWith(s4, 1), true);
+    assertEq(s1.startsWith(s1), true);
+
+    // Latin1 + TwoByte
+    assertEq(s1.startsWith("abc\u0099\u1200".slice(0, -1)), true);
+    assertEq(s1.startsWith("abc\u0099e\u1200".slice(0, -1)), false);
+    assertEq(s1.startsWith("bc\u0099\u1200".slice(0, -1), 1), true);
+    assertEq(s1.startsWith("\u1200"), false);
+
+    // TwoByte + Latin1
+    var s5 = "abc\u0099de\u1200";
+    assertEq(s5.startsWith(s1), false);
+    assertEq(s5.startsWith(s2), true);
+    assertEq(s5.startsWith(s4), false);
+    assertEq(s5.startsWith(s4, 1), true);
+
+    // TwoByte + TwoByte
+    assertEq(s5.startsWith(s5), true);
+    assertEq(s5.startsWith("\u1200"), false);
+    assertEq(s5.startsWith("\u1200", 6), true);
+}
+testStartsWith();
+
+function testEndsWith() {
+    var s1 = toLatin1("zabc\u0099defg");
+    var s2 = toLatin1("\u0099defg");
+    var s3 = toLatin1("\u0098defg");
+    var s4 = toLatin1("zabc\u0099def");
+
+    // Latin1 + Latin1
+    assertEq(s1.endsWith(s2), true);
+    assertEq(s1.endsWith(s3), false);
+    assertEq(s1.endsWith(s4), false);
+    assertEq(s1.endsWith(s4, 8), true);
+    assertEq(s1.endsWith(s1), true);
+
+    // Latin1 + TwoByte
+    assertEq(s1.endsWith("abc\u0099defg\u1200".slice(0, -1)), true);
+    assertEq(s1.endsWith("\u1100efg\u1200".slice(0, -1)), false);
+    assertEq(s1.endsWith("bc\u0099\u1200".slice(0, -1), 5), true);
+    assertEq(s1.endsWith("\u1200"), false);
+
+    // TwoByte + Latin1
+    var s5 = "\u1200zabc\u0099defg";
+    assertEq(s5.endsWith(s1), true);
+    assertEq(s5.endsWith(s2), true);
+    assertEq(s5.endsWith(s4), false);
+    assertEq(s5.endsWith(s4, 9), true);
+
+    // TwoByte + TwoByte
+    assertEq(s5.endsWith(s5), true);
+    assertEq(s5.endsWith("\u1200"), false);
+    assertEq(s5.endsWith("\u1200za", 3), true);
+}
+testEndsWith();