1 files changed, 93 insertions, 0 deletions
diff --git a/js/src/tests/non262/Date/parse-day-of-week.js b/js/src/tests/non262/Date/parse-day-of-week.js
new file mode 100644
index 0000000000..08bcd3ee05
--- /dev/null
+++ b/js/src/tests/non262/Date/parse-day-of-week.js
@@ -0,0 +1,93 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* 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 expectedDate = new Date("1995-09-26T00:00:00");
+
+// Each prefix will be tested with each format:
+const prefixes = [
+  "Tuesday, ",
+  "Tuesday ",
+  "Tuesday,",
+  "Tuesday.",
+  "Tuesday-",
+  "Tuesday/",
+
+  // Case insensitive
+  "tuesday, ",
+  "tUeSdAy ",
+
+  // Abbreviations are valid down to the first character
+  "Tuesda ",
+  "Tue ",
+  "T ",
+  "t,",
+
+  // Floating delimiters at beginning are allowed/ignored
+  " ",
+  ",",
+  ", ",
+  ".",
+  "-",
+  "/",
+
+  // It doesn't actually need to be the correct day of the week, or
+  // a day of week at all...you can put anything there
+  "Monday ",
+  "foo bar "
+];
+const formats = [
+  "Sep 26 1995",
+  "26 Sep 1995",
+  "September 26, 1995",
+  "26-Sep-1995",
+  "1995-9-26",
+  // ISO format is non-formal with day of week in front
+  "1995-09-26",
+
+  // You can put anything between the month and mday
+  "Sep foo bar 26 1995",
+  "Sep-foo bar-26 1995",
+  "Sep-foo-bar-26 1995",
+
+  // Redundant month names are allowed
+  "Sep sep 26 1995",
+  "Sep 26 sep 1995",
+  // Edge case: if multiple month names, use the last one
+  "Jan 26 1995 sep",
+];
+
+const rejected = [
+  "Sep 26 foo 1995",
+  "Sep 26 1995 foo",
+  "1995 foo Sep 26",
+  "foo2 Sep 26 1995",
+];
+
+for (const format of formats) {
+  for (const prefix of prefixes) {
+    const test = prefix + format;
+    const testDate = new Date(test);
+
+    assertEq(
+      false, isNaN(testDate),
+      `${test} should be accepted.`
+    );
+
+    assertEq(
+      testDate.getTime(), expectedDate.getTime(),
+      `"${test}" should be ${expectedDate} (got ${testDate}).`
+    );
+  }
+}
+
+for (const reject of rejected) {
+  assertEq(
+    true, isNaN(new Date(reject)),
+    `"${reject}" should be rejected.`
+  );
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);