Add m-esr52 at 52.6.0

1 files changed, 14 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/collections/Set-constructor-1.js b/js/src/jit-test/tests/collections/Set-constructor-1.js
new file mode 100644
index 000000000..eab36af90
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Set-constructor-1.js
@@ -0,0 +1,14 @@
+// The Set constructor creates an empty Set by default.
+
+load(libdir + "asserts.js");
+
+var s = new Set();
+assertEq(s.size, 0);
+s = new Set(undefined);
+assertEq(s.size, 0);
+s = new Set(null);
+assertEq(s.size, 0);
+
+assertThrowsInstanceOf(() => Set(), TypeError);
+assertThrowsInstanceOf(() => Set(undefined), TypeError);
+assertThrowsInstanceOf(() => Set(null), TypeError);