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-rw-r--r--js/src/jit-test/tests/collections/Map-clear-4.js10
1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Map-clear-4.js b/js/src/jit-test/tests/collections/Map-clear-4.js
new file mode 100644
index 0000000000..2925c801f8
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Map-clear-4.js
@@ -0,0 +1,10 @@
+// Clearing a Map after deleting some entries works.
+
+var m = new Map([["a", 1], ["b", 2], ["c", 3], ["d", 4]]);
+for (var [k, v] of m)
+ if (k !== "c")
+ m.delete(k);
+m.clear();
+assertEq(m.size, 0);
+assertEq(m.has("c"), false);
+assertEq(m.has("d"), false);