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-rw-r--r--js/src/jit-test/tests/collections/WeakSet-constructor.js9
1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/WeakSet-constructor.js b/js/src/jit-test/tests/collections/WeakSet-constructor.js
new file mode 100644
index 0000000000..a89e8fc0c8
--- /dev/null
+++ b/js/src/jit-test/tests/collections/WeakSet-constructor.js
@@ -0,0 +1,9 @@
+var list = [Number, Function];
+
+var ws = new WeakSet(list);
+assertEq(ws.has(Number), true);
+assertEq(ws.has(Function), true);
+
+ws = new WeakSet(new Set(list));
+assertEq(ws.has(Number), true);
+assertEq(ws.has(Function), true);