Add m-esr52 at 52.6.0

1 files changed, 54 insertions, 0 deletions

diff --git a/js/src/tests/ecma_7/Destructuring/rest-parameter.js b/js/src/tests/ecma_7/Destructuring/rest-parameter.js
new file mode 100644
index 000000000..50d77f3cc
--- /dev/null
+++ b/js/src/tests/ecma_7/Destructuring/rest-parameter.js
@@ -0,0 +1,54 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Simple functional test for destructuring rest parameters.
+
+function arrayRest(...[a, b]) {
+    return a + b;
+}
+assertEq(arrayRest(3, 7), 10);
+
+
+function arrayRestWithDefault(...[a, b = 1]) {
+    return a + b;
+}
+assertEq(arrayRestWithDefault(3, 7), 10);
+assertEq(arrayRestWithDefault(4), 5);
+assertEq(arrayRestWithDefault(4, undefined), 5);
+
+
+function objectRest(...{length: len}) {
+    return len;
+}
+assertEq(objectRest(), 0);
+assertEq(objectRest(10), 1);
+assertEq(objectRest(10, 20), 2);
+
+
+function objectRestWithDefault(...{0: a, 1: b = 1}) {
+    return a + b;
+}
+assertEq(objectRestWithDefault(3, 7), 10);
+assertEq(objectRestWithDefault(4), 5);
+assertEq(objectRestWithDefault(4, undefined), 5);
+
+
+function arrayRestWithNestedRest(...[...r]) {
+    return r.length;
+}
+assertEq(arrayRestWithNestedRest(), 0);
+assertEq(arrayRestWithNestedRest(10), 1);
+assertEq(arrayRestWithNestedRest(10, 20), 2);
+
+
+function arrayRestTDZ(...[a = a]) { }
+assertThrowsInstanceOf(() => arrayRestTDZ(), ReferenceError);
+
+
+function objectRestTDZ(...{a = a}) { }
+assertThrowsInstanceOf(() => objectRestTDZ(), ReferenceError);
+
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);