Add m-esr52 at 52.6.0

1 files changed, 7 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/LexicalEnvironment/unscopables-miss.js b/js/src/tests/ecma_6/LexicalEnvironment/unscopables-miss.js
new file mode 100644
index 000000000..b86d51078
--- /dev/null
+++ b/js/src/tests/ecma_6/LexicalEnvironment/unscopables-miss.js
@@ -0,0 +1,7 @@
+// Trying to access a binding that doesn't exist due to @@unscopables
+// is a ReferenceError.
+
+with ({x: 1, [Symbol.unscopables]: {x: true}})
+    assertThrowsInstanceOf(() => x, ReferenceError);
+
+reportCompare(0, 0);