1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/date-late-weekday-warning.js b/js/src/jit-test/tests/basic/date-late-weekday-warning.js
new file mode 100644
index 0000000000..ca6730e56c
--- /dev/null
+++ b/js/src/jit-test/tests/basic/date-late-weekday-warning.js
@@ -0,0 +1,34 @@
+/**
+ * Test deprecation warning for late weekday in Date.parse
+ */
+
+function testWarn(date) {
+  const g = newGlobal();
+  g.eval(`Date.parse("${date}")`);
+  const warning = getLastWarning();
+  assertEq(warning !== null, true, `warning should be caught for ${date}`);
+  assertEq(warning.name, "Warning", warning.name);
+
+  clearLastWarning();
+
+  g.eval(`Date.parse("${date}")`);
+  assertEq(getLastWarning(), null, "warning should not be caught for 2nd ocurrence");
+}
+
+function testNoWarn(date) {
+  Date.parse(date);
+  assertEq(getLastWarning(), null, `warning should not be caught for ${date}`);
+}
+
+enableLastWarning();
+
+testWarn("Sep 26 1995 Tues");
+testWarn("Sep 26 Tues 1995");
+testWarn("Sep 26 Tues 1995 Tues");
+testWarn("Sep 26 1995 10:Tues:00");
+
+testNoWarn("Sep 26 1995");
+testNoWarn("Tues Sep 26 1995");
+testNoWarn("Sep Tues 26 1995");
+
+disableLastWarning();