1 files changed, 71 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/testStringMatch.js b/js/src/jit-test/tests/ion/testStringMatch.js
new file mode 100644
index 000000000..dc5af2d80
--- /dev/null
+++ b/js/src/jit-test/tests/ion/testStringMatch.js
@@ -0,0 +1,71 @@
+setJitCompilerOption("ion.warmup.trigger", 4);
+
+function testBasic() {
+  var f = function() {
+    var result = "abc".match("b");
+    assertEq(result.length, 1);
+    assertEq(result.index, 1);
+    assertEq(result[0], "b");
+  };
+  for (var i = 0; i < 40; i++) {
+    f();
+  }
+}
+testBasic();
+
+function testMod(apply, unapply) {
+  var f = function(applied) {
+    var result = "abc".match("b");
+    assertEq(result.length, 1);
+    if (applied) {
+      assertEq(result[0], "mod");
+    } else {
+      assertEq(result.index, 1);
+      assertEq(result[0], "b");
+    }
+  };
+  var applied = false;
+  for (var i = 0; i < 120; i++) {
+    f(applied);
+    if (i == 40) {
+      apply();
+      applied = true;
+    }
+    if (i == 80) {
+      unapply();
+      applied = false;
+    }
+  }
+}
+testMod(() => {
+  String.prototype[Symbol.match] = () => ["mod"];
+}, () => {
+  delete String.prototype[Symbol.match];
+});
+testMod(() => {
+  Object.prototype[Symbol.match] = () => ["mod"];
+}, () => {
+  delete Object.prototype[Symbol.match];
+});
+
+testMod(() => {
+  Object.setPrototypeOf(String.prototype, {
+    [Symbol.match]: () => ["mod"]
+  });
+}, () => {
+  Object.setPrototypeOf(String.prototype, Object.prototype);
+});
+
+var orig_exec = RegExp.prototype.exec;
+testMod(() => {
+  RegExp.prototype.exec = () => ["mod"];
+}, () => {
+  RegExp.prototype.exec = orig_exec;
+});
+
+var orig_match = RegExp.prototype[Symbol.match];
+testMod(() => {
+  RegExp.prototype[Symbol.match] = () => ["mod"];
+}, () => {
+  RegExp.prototype[Symbol.match] = orig_match;
+});