1 files changed, 72 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/bound-construct-scripted.js b/js/src/jit-test/tests/cacheir/bound-construct-scripted.js
new file mode 100644
index 0000000000..056a538159
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/bound-construct-scripted.js
@@ -0,0 +1,72 @@
+function testNewTargetGuard() {
+  var weirdNewTarget = function() {};
+  var fun = function() { return new.target; };
+  var boundFun = fun.bind(null);
+  for (var i = 0; i < 60; i++) {
+    var newTarget = i < 40 ? boundFun : weirdNewTarget;
+    var res = Reflect.construct(boundFun, [], newTarget);
+    assertEq(res, i < 40 ? fun : weirdNewTarget);
+  }
+}
+testNewTargetGuard();
+
+function testPrototypeGuard() {
+  var fun = function() {};
+  var boundFun = fun.bind(null);
+  var customPrototype1 = {};
+  var customPrototype2 = {};
+  fun.prototype = customPrototype1;
+
+  for (var i = 0; i < 60; i++) {
+    if (i === 40) {
+      fun.prototype = customPrototype2;
+    }
+    var res = new boundFun();
+    assertEq(Object.getPrototypeOf(res), i < 40 ? customPrototype1 : customPrototype2);
+  }
+}
+testPrototypeGuard();
+
+function testNonObjectPrototypeGuard() {
+  var fun = function() {};
+  var boundFun = fun.bind(null);
+  fun.prototype = null;
+  var customPrototype = {};
+
+  for (var i = 0; i < 60; i++) {
+    if (i === 40) {
+      fun.prototype = customPrototype;
+    }
+    var res = new boundFun();
+    assertEq(Object.getPrototypeOf(res), i < 40 ? Object.prototype : customPrototype);
+  }
+}
+testNonObjectPrototypeGuard();
+
+function testObjectReturnValue() {
+  var fun = function() { return Math; };
+  var boundFun = fun.bind(null);
+  for (var i = 0; i < 60; i++) {
+    var res = new boundFun();
+    assertEq(res, Math);
+  }
+}
+testObjectReturnValue();
+
+function testManyArgs() {
+  var fun = function(a, b, c, d, e, f, g, h, i, j) {
+    this.values = [a, b, c, d, e, f, g, h, i, j].join(",");
+  };
+  var boundFun1 = fun.bind(null, 1, 2);
+  var boundFun2 = fun.bind(null, 1, 2, 3, 4, 5, 6);
+  for (var i = 0; i < 60; i++) {
+    assertEq(new boundFun1().values, "1,2,,,,,,,,");
+    assertEq(new boundFun1(10, 11, 12, 13, 14).values, "1,2,10,11,12,13,14,,,");
+    assertEq(new boundFun1(10, 11, 12, 13, 14, 15, 16, 17).values, "1,2,10,11,12,13,14,15,16,17");
+
+    assertEq(new boundFun2().values, "1,2,3,4,5,6,,,,");
+    assertEq(new boundFun2(10, 11).values, "1,2,3,4,5,6,10,11,,");
+    assertEq(new boundFun2(10, 11, 12, 13, 14, 15, 16, 17).values, "1,2,3,4,5,6,10,11,12,13");
+  }
+}
+testManyArgs();