From d62318319fa931083e744ca50ca5dc79269a4dd5 Mon Sep 17 00:00:00 2001
From: Richard Gibson <richard.gibson@gmail.com>
Date: Tue, 2 Apr 2019 14:02:35 -0400
Subject: [PATCH] Add tests for string representations of Date objects with
 negative years (#2114)

* Add tests for string representations of Date objects with negative years

Ref https://github.com/tc39/ecma262/issues/1035
Ref https://github.com/tc39/ecma262/issues/1407
---
 .../prototype/toDateString/negative-year.js   | 33 ++++++++++++++++++
 .../Date/prototype/toString/negative-year.js  | 34 +++++++++++++++++++
 .../prototype/toUTCString/negative-year.js    | 33 ++++++++++++++++++
 3 files changed, 100 insertions(+)
 create mode 100644 test/built-ins/Date/prototype/toDateString/negative-year.js
 create mode 100644 test/built-ins/Date/prototype/toString/negative-year.js
 create mode 100644 test/built-ins/Date/prototype/toUTCString/negative-year.js

diff --git a/test/built-ins/Date/prototype/toDateString/negative-year.js b/test/built-ins/Date/prototype/toDateString/negative-year.js
new file mode 100644
index 0000000000..1960c94b80
--- /dev/null
+++ b/test/built-ins/Date/prototype/toDateString/negative-year.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2018 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Negative years must be serialized with at least four digits
+esid: sec-date.prototype.todatestring
+info: |
+    Date.prototype.toDateString ( )
+
+    5. Return DateString(_t_).
+---*/
+
+var negative1DigitYearDateString = (new Date('-000001-07-01T00:00Z')).toDateString();
+var negative2DigitYearDateString = (new Date('-000012-07-01T00:00Z')).toDateString();
+var negative3DigitYearDateString = (new Date('-000123-07-01T00:00Z')).toDateString();
+var negative4DigitYearDateString = (new Date('-001234-07-01T00:00Z')).toDateString();
+var negative5DigitYearDateString = (new Date('-012345-07-01T00:00Z')).toDateString();
+var negative6DigitYearDateString = (new Date('-123456-07-01T00:00Z')).toDateString();
+
+// Date.prototype.toDateString emits values like "Fri Mar 28 2019".
+// Extract and verify just the year.
+assert.sameValue(negative1DigitYearDateString.split(' ')[3], '-0001',
+    'Date.prototype.toDateString serializes year -1 to "-0001"');
+assert.sameValue(negative2DigitYearDateString.split(' ')[3], '-0012',
+    'Date.prototype.toDateString serializes year -12 to "-0012"');
+assert.sameValue(negative3DigitYearDateString.split(' ')[3], '-0123',
+    'Date.prototype.toDateString serializes year -123 to "-0123"');
+assert.sameValue(negative4DigitYearDateString.split(' ')[3], '-1234',
+    'Date.prototype.toDateString serializes year -1234 to "-1234"');
+assert.sameValue(negative5DigitYearDateString.split(' ')[3], '-12345',
+    'Date.prototype.toDateString serializes year -12345 to "-12345"');
+assert.sameValue(negative6DigitYearDateString.split(' ')[3], '-123456',
+    'Date.prototype.toDateString serializes year -123456 to "-123456"');
diff --git a/test/built-ins/Date/prototype/toString/negative-year.js b/test/built-ins/Date/prototype/toString/negative-year.js
new file mode 100644
index 0000000000..1cf7ba54cc
--- /dev/null
+++ b/test/built-ins/Date/prototype/toString/negative-year.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2018 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Negative years must be serialized with at least four digits
+esid: sec-date.prototype.tostring
+info: |
+    Date.prototype.toString ( )
+
+    2. Return ToDateString(_tv_).
+---*/
+
+var negative1DigitYearToString = (new Date('-000001-07-01T00:00Z')).toString();
+var negative2DigitYearToString = (new Date('-000012-07-01T00:00Z')).toString();
+var negative3DigitYearToString = (new Date('-000123-07-01T00:00Z')).toString();
+var negative4DigitYearToString = (new Date('-001234-07-01T00:00Z')).toString();
+var negative5DigitYearToString = (new Date('-012345-07-01T00:00Z')).toString();
+var negative6DigitYearToString = (new Date('-123456-07-01T00:00Z')).toString();
+
+// Date.prototype.toString emits values like
+// "Fri Mar 28 2019 10:23:42 GMT-0400 (Eastern Daylight Time)".
+// Extract and verify just the year.
+assert.sameValue(negative1DigitYearToString.split(' ')[3], '-0001',
+    'Date.prototype.toString serializes year -1 to "-0001"');
+assert.sameValue(negative2DigitYearToString.split(' ')[3], '-0012',
+    'Date.prototype.toString serializes year -12 to "-0012"');
+assert.sameValue(negative3DigitYearToString.split(' ')[3], '-0123',
+    'Date.prototype.toString serializes year -123 to "-0123"');
+assert.sameValue(negative4DigitYearToString.split(' ')[3], '-1234',
+    'Date.prototype.toString serializes year -1234 to "-1234"');
+assert.sameValue(negative5DigitYearToString.split(' ')[3], '-12345',
+    'Date.prototype.toString serializes year -12345 to "-12345"');
+assert.sameValue(negative6DigitYearToString.split(' ')[3], '-123456',
+    'Date.prototype.toString serializes year -123456 to "-123456"');
diff --git a/test/built-ins/Date/prototype/toUTCString/negative-year.js b/test/built-ins/Date/prototype/toUTCString/negative-year.js
new file mode 100644
index 0000000000..5a808740f3
--- /dev/null
+++ b/test/built-ins/Date/prototype/toUTCString/negative-year.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2018 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Negative years must be serialized with at least four digits
+esid: sec-date.prototype.toutcstring
+info: |
+    Date.prototype.toUTCString ( )
+
+    10. Return the string-concatenation of _weekday_, `","`, the code unit 0x0020 (SPACE), _day_, the code unit 0x0020 (SPACE), _month_, the code unit 0x0020 (SPACE), _yearSign_, _year_, the code unit 0x0020 (SPACE), and TimeString(_tv_).
+---*/
+
+var negative1DigitYearToUTCString = (new Date('-000001-07-01T00:00Z')).toUTCString();
+var negative2DigitYearToUTCString = (new Date('-000012-07-01T00:00Z')).toUTCString();
+var negative3DigitYearToUTCString = (new Date('-000123-07-01T00:00Z')).toUTCString();
+var negative4DigitYearToUTCString = (new Date('-001234-07-01T00:00Z')).toUTCString();
+var negative5DigitYearToUTCString = (new Date('-012345-07-01T00:00Z')).toUTCString();
+var negative6DigitYearToUTCString = (new Date('-123456-07-01T00:00Z')).toUTCString();
+
+// Date.prototype.toUTCString emits values like "Thu, 28 Mar 2019 10:23:42 GMT".
+// Extract and verify just the year.
+assert.sameValue(negative1DigitYearToUTCString.split(' ')[3], '-0001',
+    'Date.prototype.toUTCString serializes year -1 to "-0001"');
+assert.sameValue(negative2DigitYearToUTCString.split(' ')[3], '-0012',
+    'Date.prototype.toUTCString serializes year -12 to "-0012"');
+assert.sameValue(negative3DigitYearToUTCString.split(' ')[3], '-0123',
+    'Date.prototype.toUTCString serializes year -123 to "-0123"');
+assert.sameValue(negative4DigitYearToUTCString.split(' ')[3], '-1234',
+    'Date.prototype.toUTCString serializes year -1234 to "-1234"');
+assert.sameValue(negative5DigitYearToUTCString.split(' ')[3], '-12345',
+    'Date.prototype.toUTCString serializes year -12345 to "-12345"');
+assert.sameValue(negative6DigitYearToUTCString.split(' ')[3], '-123456',
+    'Date.prototype.toUTCString serializes year -123456 to "-123456"');