Add m-esr52 at 52.6.0

1 files changed, 32 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/WeakMap-surfaces.js b/js/src/jit-test/tests/collections/WeakMap-surfaces.js
new file mode 100644
index 000000000..662bb39e3
--- /dev/null
+++ b/js/src/jit-test/tests/collections/WeakMap-surfaces.js
@@ -0,0 +1,32 @@
+// WeakMap surfaces
+
+var desc = Object.getOwnPropertyDescriptor(this, "WeakMap");
+assertEq(desc.enumerable, false);
+assertEq(desc.configurable, true);
+assertEq(desc.writable, true);
+
+assertEq(typeof WeakMap, 'function');
+assertEq(Object.keys(WeakMap).length, 0);
+assertEq(WeakMap.length, 0);
+assertEq(WeakMap.name, "WeakMap");
+
+assertEq(Object.getPrototypeOf(WeakMap.prototype), Object.prototype);
+assertEq(Object.prototype.toString.call(WeakMap.prototype), "[object WeakMap]");
+assertEq(Object.prototype.toString.call(new WeakMap()), "[object WeakMap]");
+assertEq(Object.keys(WeakMap.prototype).join(), "");
+assertEq(WeakMap.prototype.constructor, WeakMap);
+
+function checkMethod(name, arity) {
+    var desc = Object.getOwnPropertyDescriptor(WeakMap.prototype, name);
+    assertEq(desc.enumerable, false);
+    assertEq(desc.configurable, true);
+    assertEq(desc.writable, true);
+    assertEq(typeof desc.value, 'function');
+    assertEq(desc.value.name, name);
+    assertEq(desc.value.length, arity);
+}
+
+checkMethod("get", 1);
+checkMethod("has", 1);
+checkMethod("set", 2);
+checkMethod("delete", 1);