From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 .../LexicalEnvironment/unscopables-ignored.js      | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 js/src/tests/ecma_6/LexicalEnvironment/unscopables-ignored.js

(limited to 'js/src/tests/ecma_6/LexicalEnvironment/unscopables-ignored.js')

diff --git a/js/src/tests/ecma_6/LexicalEnvironment/unscopables-ignored.js b/js/src/tests/ecma_6/LexicalEnvironment/unscopables-ignored.js
new file mode 100644
index 000000000..08b042a3b
--- /dev/null
+++ b/js/src/tests/ecma_6/LexicalEnvironment/unscopables-ignored.js
@@ -0,0 +1,22 @@
+// In these cases, @@unscopables should not be consulted.
+
+// Because obj has no properties `assertEq` or `x`,
+// obj[@@unscopables] is not checked here:
+var obj = {
+    get [Symbol.unscopables]() {
+        throw "tried to read @@unscopables";
+    }
+};
+var x = 3;
+with (obj)
+    assertEq(x, 3);
+
+// If @@unscopables is present but not an object, it is ignored:
+for (let nonObject of [undefined, null, "nothing", Symbol.for("moon")]) {
+    let y = 4;
+    let obj2 = {[Symbol.unscopables]: nonObject, y: 5};
+    with (obj2)
+        assertEq(y, 5);
+}
+
+reportCompare(0, 0);
-- 
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