1 files changed, 7 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Set-add-returns-this.js b/js/src/jit-test/tests/collections/Set-add-returns-this.js
new file mode 100644
index 0000000000..88806b8d87
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Set-add-returns-this.js
@@ -0,0 +1,7 @@
+// Bug 1031632 - Map.prototype.set, WeakMap.prototype.set and
+// Set.prototype.add should be chainable
+
+var s = new Set();
+assertEq(s.add('BAR'), s);
+var b = s.add('foo').has('foo');
+assertEq(b, true);