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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /js/src/jit-test/tests/collections/key-equality-0.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/collections/key-equality-0.js')
-rw-r--r--js/src/jit-test/tests/collections/key-equality-0.js43
1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/key-equality-0.js b/js/src/jit-test/tests/collections/key-equality-0.js
new file mode 100644
index 000000000..7f9da8c2b
--- /dev/null
+++ b/js/src/jit-test/tests/collections/key-equality-0.js
@@ -0,0 +1,43 @@
+// -0 is treated as the same key as +0.
+
+var s = new Set;
+s.add(-0);
+assertEq(s.has(0), true);
+assertEq(s.has(-0), true);
+
+assertEq(s.delete(0), true);
+assertEq(s.has(-0), false);
+assertEq(s.has(0), false);
+
+s.add(0);
+assertEq(s.has(0), true);
+assertEq(s.has(-0), true);
+assertEq(s.delete(-0), true);
+assertEq(s.has(-0), false);
+assertEq(s.has(0), false);
+
+var m = new Map;
+m.set(-0, 'x');
+assertEq(m.has(0), true);
+assertEq(m.get(0), 'x');
+assertEq(m.has(-0), true);
+assertEq(m.get(-0), 'x');
+
+assertEq(m.delete(0), true);
+assertEq(m.has(-0), false);
+assertEq(m.get(-0), undefined);
+assertEq(m.has(0), false);
+assertEq(m.get(0), undefined);
+
+m.set(-0, 'x');
+m.set(0, 'y');
+assertEq(m.has(0), true);
+assertEq(m.get(0), 'y');
+assertEq(m.has(-0), true);
+assertEq(m.get(-0), 'y');
+
+assertEq(m.delete(-0), true);
+assertEq(m.has(0), false);
+assertEq(m.get(0), undefined);
+assertEq(m.has(-0), false);
+assertEq(m.get(-0), undefined);