1 files changed, 77 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/class/throwOnCallConstructor.js b/js/src/jit-test/tests/class/throwOnCallConstructor.js
new file mode 100644
index 0000000000..2bde725702
--- /dev/null
+++ b/js/src/jit-test/tests/class/throwOnCallConstructor.js
@@ -0,0 +1,77 @@
+// Count constructor calls
+var cnt = 0;
+class Base { constructor() { ++cnt; } }
+
+// Force |JSFunction->hasScript()|
+new Base();
+assertEq(cnt, 1);
+
+// Calling a ClassConstructor must throw
+(function() {
+    function f() { Base(); }
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Spread-calling a ClassConstructor must throw
+(function() {
+    function f() { Base(...[]); }
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Function.prototype.call must throw on ClassConstructor
+(function() {
+    function f() { Base.call(null); }
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Function.prototype.apply must throw on ClassConstructor
+(function() {
+    function f() { Base.apply(null, []); }
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Getter must throw if it is a ClassConstructor
+(function() {
+    var o = {};
+    Object.defineProperty(o, "prop", { get: Base });
+    function f() { o.prop };
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Setter must throw if it is a ClassConstructor
+(function() {
+    var o = {};
+    Object.defineProperty(o, "prop", { set: Base });
+    function f() { o.prop = 1 };
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Proxy apply must throw if it is a ClassConstructor
+(function() {
+    var o = new Proxy(function() { }, { apply: Base });
+    function f() { o() };
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();
+
+// Proxy get must throw if it is a ClassConstructor
+(function() {
+    var o = new Proxy({}, { get: Base });
+    function f() { o.x }
+    try { f() } catch (e) {}
+    try { f() } catch (e) {}
+    assertEq(cnt, 1);
+})();