1 files changed, 71 insertions, 0 deletions
diff --git a/js/src/tests/non262/Date/two-digit-years.js b/js/src/tests/non262/Date/two-digit-years.js
new file mode 100644
index 0000000000..80cbc2ecef
--- /dev/null
+++ b/js/src/tests/non262/Date/two-digit-years.js
@@ -0,0 +1,71 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommonn.org/licenses/publicdomain/
+ */
+
+/*
+ * For the sake of cross compatibility with other implementations we
+ * implement date parsing heuristics which support single and double
+ * digit years. See bug: 1265136
+ */
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+for (let year of Array(100).keys()) {
+    for (let month of Array(12).keys()) {
+        for (let day of Array(31).keys()) {
+            let fullYear = year >= 50 ? year + 1900 : year + 2000;
+            let fullDate = new Date(`${month + 1}/${day + 1}/${fullYear}`);
+
+            // mm/dd/yy
+            let d1 = new Date(`${month + 1}/${day + 1}/${year}`);
+            assertEq(d1.getTime(), fullDate.getTime())
+
+            // yy/mm/dd
+            let d2 = new Date(`${year}/${month + 1}/${day + 1}`);
+            if (year > 31) {
+                assertEq(d2.getTime(), fullDate.getTime())
+            } else if (year > 12) {
+                assertEq(d2.getTime(), new Date(NaN).getTime())
+            }
+        }
+    }
+}
+
+assertEq(new Date("99/1/99").getTime(), new Date(NaN).getTime());
+assertEq(new Date("13/13/13").getTime(), new Date(NaN).getTime());
+assertEq(new Date("0/10/0").getTime(), new Date(NaN).getTime());
+
+// Written months.
+for (let year of Array(1000).keys()) {
+    let fullDate = new Date(`5/1/${year}`);
+    let d1 = new Date(`may 1 ${year}`);
+    let d2 = new Date(`1 may ${year}`);
+    let d3 = new Date(`1 ${year} may`);
+
+    assertEq(d1.getTime(), fullDate.getTime())
+    assertEq(d2.getTime(), fullDate.getTime())
+    assertEq(d3.getTime(), fullDate.getTime())
+
+    if (year > 31) {
+      let d4 = new Date(`may ${year} 1`);
+      let d5 = new Date(`${year} may 1`);
+      let d6 = new Date(`${year} 1 may`);
+
+      assertEq(d4.getTime(), fullDate.getTime())
+      assertEq(d5.getTime(), fullDate.getTime())
+      assertEq(d6.getTime(), fullDate.getTime())
+    }
+}
+
+assertEq(new Date("may 1999 1999").getTime(), new Date(NaN).getTime());
+assertEq(new Date("may 0 0").getTime(), new Date(NaN).getTime());
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");