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-rw-r--r--js/src/tests/ecma_6/Destructuring/rest-with-trailing-comma.js45
1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Destructuring/rest-with-trailing-comma.js b/js/src/tests/ecma_6/Destructuring/rest-with-trailing-comma.js
new file mode 100644
index 000000000..310180e14
--- /dev/null
+++ b/js/src/tests/ecma_6/Destructuring/rest-with-trailing-comma.js
@@ -0,0 +1,45 @@
+/* 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/. */
+
+const invalidSyntax = [
+ "[...r, ]",
+ "[a, ...r, ]",
+ "[a = 0, ...r, ]",
+ "[[], ...r, ]",
+ "[[...r,]]",
+ "[[...r,], ]",
+ "[[...r,], a]",
+];
+
+const validSyntax = [
+ "[, ]",
+ "[a, ]",
+ "[[], ]",
+];
+
+const destructuringForms = [
+ a => `${a} = [];`,
+ a => `var ${a} = [];`,
+ a => `let ${a} = [];`,
+ a => `const ${a} = [];`,
+ a => `(${a}) => {};`,
+ a => `(${a} = []) => {};`,
+ a => `function f(${a}) {}`,
+];
+
+for (let invalid of invalidSyntax) {
+ for (let fn of destructuringForms) {
+ assertThrowsInstanceOf(() => Function(fn(invalid)), SyntaxError);
+ }
+}
+
+for (let invalid of validSyntax) {
+ for (let fn of destructuringForms) {
+ Function(fn(invalid));
+ }
+}
+
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);