From 79591ae6c8f13f5c558576ad58846d80f33d0f0e Mon Sep 17 00:00:00 2001
From: Frank Yung-Fong Tang <41213225+FrankYFTang@users.noreply.github.com>
Date: Tue, 8 Oct 2019 11:54:02 -0700
Subject: [PATCH] Add test for #349 and #351 PR (#2379)

Test DateTimeFormat change pattern based on calendar and output relatedYear and yearName
based on the assumption that "en-u-ca-chinese" will output 'relatedYear' and 'yearName'.
https://github.com/tc39/ecma402/pull/349
https://github.com/tc39/ecma402/pull/351
@rwaldron @leobalter @Ms2ger @littledan
---
 .../prototype/formatToParts/related-year.js   | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 test/intl402/DateTimeFormat/prototype/formatToParts/related-year.js

diff --git a/test/intl402/DateTimeFormat/prototype/formatToParts/related-year.js b/test/intl402/DateTimeFormat/prototype/formatToParts/related-year.js
new file mode 100644
index 0000000000..4f01d98c2d
--- /dev/null
+++ b/test/intl402/DateTimeFormat/prototype/formatToParts/related-year.js
@@ -0,0 +1,20 @@
+// Copyright 2019 Google Inc.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-partitiondatetimepattern
+description: Checks the output of 'relatedYear' and 'yearName' type, and
+    the choose of pattern base on calendar.
+locale: [en-u-ca-chinese]
+---*/
+
+let df = new Intl.DateTimeFormat("en-u-ca-chinese", {year: "numeric"});
+let parts = df.formatToParts(new Date());
+var relatedYearCount = 0;
+var yearNameCount = 0;
+parts.forEach(function(part) {
+  relatedYearCount += (part.type == "relatedYear") ? 1 : 0;
+  yearNameCount += (part.type == "yearName") ? 1 : 0;
+});
+assert.sameValue(relatedYearCount > 0, true);
+assert.sameValue(yearNameCount > 0, true);