1 files changed, 72 insertions, 0 deletions
diff --git a/js/src/tests/non262/destructuring/cover-init-name-syntax.js b/js/src/tests/non262/destructuring/cover-init-name-syntax.js
new file mode 100644
index 0000000000..b37d8c2904
--- /dev/null
+++ b/js/src/tests/non262/destructuring/cover-init-name-syntax.js
@@ -0,0 +1,72 @@
+/* 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/. */
+
+
+// CoverInitName in arrow parameters.
+({a = 1}, {b = 2}, {c = 3}) => {};
+({a = 1} = {}, {b = 2}, {c = 3}) => {};
+({a = 1} = {}, {b = 2} = {}, {c = 3}) => {};
+({a = 1} = {}, {b = 2} = {}, {c = 3} = {}) => {};
+
+
+// CoverInitName in CoverParenthesizedExpressionAndArrowParameterList,
+// but not ArrowParameters.
+assertThrowsInstanceOf(() => eval(`
+    ({a = 1}, {b = 2}, {c = 3});
+`), SyntaxError);
+assertThrowsInstanceOf(() => eval(`
+    ({a = 1}, {b = 2}, {c = 3} = {});
+`), SyntaxError);
+assertThrowsInstanceOf(() => eval(`
+    ({a = 1}, {b = 2} = {}, {c = 3} = {});
+`), SyntaxError);
+
+
+// CoverInitName nested in array destructuring.
+[{a = 0}] = [{}];
+var [{a = 0}] = [{}];
+{ let [{a = 0}] = [{}]; }
+{ const [{a = 0}] = [{}]; }
+
+for ([{a = 0}] of []);
+for (var [{a = 0}] of []);
+for (let [{a = 0}] of []);
+for (const [{a = 0}] of []);
+
+function f([{a = 0}]) {}
+var h = ([{a = 0}]) => {};
+
+
+// CoverInitName nested in rest pattern.
+[...[{a = 0}]] = [{}];
+var [...[{a = 0}]] = [{}];
+{ let [...[{a = 0}]] = [{}]; }
+{ const [...[{a = 0}]] = [{}]; }
+
+for ([...[{a = 0}]] of []);
+for (var [...[{a = 0}]] of []);
+for (let [...[{a = 0}]] of []);
+for (const [...[{a = 0}]] of []);
+
+function f([...[{a = 0}]]) {}
+var h = ([...[{a = 0}]]) => {};
+
+
+// CoverInitName nested in object destructuring.
+({p: {a = 0}} = {p: {}});
+var {p: {a = 0}} = {p: {}};
+{ let {p: {a = 0}} = {p: {}}; }
+{ const {p: {a = 0}} = {p: {}}; }
+
+for ({p: {a = 0}} of []);
+for (var {p: {a = 0}} of []);
+for (let {p: {a = 0}} of []);
+for (const {p: {a = 0}} of []);
+
+function f({p: {a = 0}}) {}
+var h = ({p: {a = 0}}) => {};
+
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);