1 files changed, 72 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/bind-function-specialized.js b/js/src/jit-test/tests/cacheir/bind-function-specialized.js
new file mode 100644
index 0000000000..acac842a7f
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/bind-function-specialized.js
@@ -0,0 +1,72 @@
+load(libdir + "asserts.js");
+
+function testBasic() {
+    var g = function foo(a, b, c) { return a - b - c; };
+    for (var i = 0; i < 100; i++) {
+        var bound1 = g.bind(null, 1);
+        assertEq(bound1.length, 2);
+        assertEq(bound1.name, "bound foo");
+        var bound2 = bound1.bind(null, 2);
+        assertEq(bound2.length, 1);
+        assertEq(bound2.name, "bound bound foo");
+        assertEq(bound2(9), -10);
+    }
+}
+testBasic();
+
+function testBindNonCtor() {
+    var g = (a, b, c) => a - b - c;
+    for (var i = 0; i < 100; i++) {
+        var bound1 = g.bind(null, 1);
+        var bound2 = bound1.bind(null, 2);
+        assertEq(bound1(2, 3), -4);
+        assertEq(bound2(4), -5);
+        assertThrowsInstanceOf(() => new bound1(2, 3), TypeError);
+        assertThrowsInstanceOf(() => new bound2(4), TypeError);
+        assertEq(bound2.length, 1);
+        assertEq(bound2.name, "bound bound g");
+    }
+}
+testBindNonCtor();
+
+function testBindSelfHosted() {
+    var g = Array.prototype.map;
+    var arr = [1, 2, 3];
+    for (var i = 0; i < 100; i++) {
+        var bound1 = g.bind(arr);
+        var bound2 = bound1.bind(null, x => x + 5);
+        assertEq(bound1(x => x + 3).toString(), "4,5,6");
+        assertEq(bound2().toString(), "6,7,8");
+        assertEq(bound2.length, 0);
+        assertEq(bound2.name, "bound bound map");
+    }
+}
+testBindSelfHosted();
+
+function testBoundDeletedName() {
+    var g = function foo(a, b, c) { return a - b - c; };
+    var bound1 = g.bind(null);
+    var bound2 = g.bind(null);
+    delete bound2.name;
+    for (var i = 0; i < 100; i++) {
+        var obj = i < 50 ? bound1 : bound2;
+        var bound3 = obj.bind(null);
+        assertEq(bound3.length, 3);
+        assertEq(bound3.name, i < 50 ? "bound bound foo" : "bound ");
+    }
+}
+testBoundDeletedName();
+
+function testWeirdProto() {
+    var g = function foo() { return 123; };
+    var proto = {bind: Function.prototype.bind};
+    Object.setPrototypeOf(g, proto);
+    for (var i = 0; i < 100; i++) {
+        var bound1 = g.bind(null);
+        assertEq(Object.getPrototypeOf(bound1), proto);
+        var bound2 = bound1.bind(null);
+        assertEq(Object.getPrototypeOf(bound2), proto);
+        assertEq(bound2(), 123);
+    }
+}
+testWeirdProto();