Add m-esr52 at 52.6.0

1 files changed, 23 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/WeakMap-constructor-5.js b/js/src/jit-test/tests/collections/WeakMap-constructor-5.js
new file mode 100644
index 000000000..3ef7300be
--- /dev/null
+++ b/js/src/jit-test/tests/collections/WeakMap-constructor-5.js
@@ -0,0 +1,23 @@
+// new WeakMap(arr) throws if arr contains holes (or undefined values).
+
+load(libdir + "asserts.js");
+
+var k1 = {};
+var v1 = 42;
+var k2 = {};
+var v2 = 43;
+var k3 = {};
+var v3 = {};
+
+assertThrowsInstanceOf(function () { new WeakMap([undefined]); }, TypeError);
+assertThrowsInstanceOf(function () { new WeakMap([null]); }, TypeError);
+assertThrowsInstanceOf(function () { new WeakMap([[k1, v1], [k2, v2], , [k3, k3]]); }, TypeError);
+assertThrowsInstanceOf(function () { new WeakMap([[k1, v1], [k2, v2], ,]); }, TypeError);
+
+// new WeakMap(iterable) throws if iterable doesn't have array-like objects
+
+assertThrowsInstanceOf(function () { new WeakMap([1, 2, 3]); }, TypeError);
+assertThrowsInstanceOf(function () {
+  let s = new Set([1, 2, "abc"]);
+  new WeakMap(s);
+}, TypeError);