1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Map-clear-1.js b/js/src/jit-test/tests/collections/Map-clear-1.js
new file mode 100644
index 0000000000..68b08cdb22
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Map-clear-1.js
@@ -0,0 +1,8 @@
+// Clearing an empty Map has no effect.
+
+var m = new Map();
+for (var i = 0; i < 2; i++) {
+    m.clear();
+    assertEq(m.size, 0);
+    assertEq(m.has(undefined), false);
+}