Bug 1287677 - Add mozIntl.getDisplayNames API

1 files changed, 238 insertions, 0 deletions

diff --git a/js/src/tests/Intl/getDisplayNames.js b/js/src/tests/Intl/getDisplayNames.js
new file mode 100644
index 000000000..ad2dbc940
--- /dev/null
+++ b/js/src/tests/Intl/getDisplayNames.js
@@ -0,0 +1,238 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')||!this.hasOwnProperty('addIntlExtras'))
+/* 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/. */
+
+// Tests the getCalendarInfo function with a diverse set of arguments.
+
+/*
+ * Test if getDisplayNames return value matches expected values.
+ */
+function checkDisplayNames(names, expected)
+{
+  assertEq(Object.getPrototypeOf(names), Object.prototype);
+
+  assertEq(names.locale, expected.locale);
+  assertEq(names.style, expected.style);
+
+  const nameValues = names.values;
+  const expectedValues = expected.values;
+
+  const nameValuesKeys = Object.getOwnPropertyNames(nameValues).sort();
+  const expectedValuesKeys = Object.getOwnPropertyNames(expectedValues).sort();
+
+  assertEqArray(nameValuesKeys, expectedValuesKeys);
+
+  for (let key of expectedValuesKeys)
+    assertEq(nameValues[key], expectedValues[key]);
+}
+
+addIntlExtras(Intl);
+
+let gDN = Intl.getDisplayNames;
+
+assertEq(gDN.length, 2);
+
+checkDisplayNames(gDN('en-US', {
+}), {
+  locale: 'en-US',
+  style: 'long',
+  values: {}
+});
+
+checkDisplayNames(gDN('en-US', {
+  keys: [
+    'dates/gregorian/weekdays/wednesday'
+  ],
+  style: 'narrow'
+}), {
+  locale: 'en-US',
+  style: 'narrow',
+  values: {
+    'dates/gregorian/weekdays/wednesday': 'W'
+  }
+});
+
+checkDisplayNames(gDN('en-US', {
+  keys: [
+    'dates/fields/year',
+    'dates/fields/month',
+    'dates/fields/week',
+    'dates/fields/day',
+    'dates/gregorian/months/january',
+    'dates/gregorian/months/february',
+    'dates/gregorian/months/march',
+    'dates/gregorian/weekdays/tuesday'
+  ]
+}), {
+  locale: 'en-US',
+  style: 'long',
+  values: {
+    'dates/fields/year': 'year',
+    'dates/fields/month': 'month',
+    'dates/fields/week': 'week',
+    'dates/fields/day': 'day',
+    'dates/gregorian/months/january': 'January',
+    'dates/gregorian/months/february': 'February',
+    'dates/gregorian/months/march': 'March',
+    'dates/gregorian/weekdays/tuesday': 'Tuesday',
+  }
+});
+
+checkDisplayNames(gDN('fr', {
+  keys: [
+    'dates/fields/year',
+    'dates/fields/day',
+    'dates/gregorian/months/october',
+    'dates/gregorian/weekdays/saturday',
+    'dates/gregorian/dayperiods/pm'
+  ]
+}), {
+  locale: 'fr',
+  style: 'long',
+  values: {
+    'dates/fields/year': 'année',
+    'dates/fields/day': 'jour',
+    'dates/gregorian/months/october': 'octobre',
+    'dates/gregorian/weekdays/saturday': 'samedi',
+    'dates/gregorian/dayperiods/pm': 'PM'
+  }
+});
+
+checkDisplayNames(gDN('it', {
+  style: 'short',
+  keys: [
+    'dates/gregorian/weekdays/thursday',
+    'dates/gregorian/months/august',
+    'dates/gregorian/dayperiods/am',
+    'dates/fields/month',
+  ]
+}), {
+  locale: 'it',
+  style: 'short',
+  values: {
+    'dates/gregorian/weekdays/thursday': 'gio',
+    'dates/gregorian/months/august': 'ago',
+    'dates/gregorian/dayperiods/am': 'AM',
+    'dates/fields/month': 'mese'
+  }
+});
+
+checkDisplayNames(gDN('ar', {
+  style: 'long',
+  keys: [
+    'dates/gregorian/weekdays/thursday',
+    'dates/gregorian/months/august',
+    'dates/gregorian/dayperiods/am',
+    'dates/fields/month',
+  ]
+}), {
+  locale: 'ar',
+  style: 'long',
+  values: {
+    'dates/gregorian/weekdays/thursday': 'الخميس',
+    'dates/gregorian/months/august': 'أغسطس',
+    'dates/gregorian/dayperiods/am': 'ص',
+    'dates/fields/month': 'الشهر'
+  }
+});
+
+/* Invalid input */
+
+assertThrowsInstanceOf(() => {
+  gDN('en-US', {
+    style: '',
+    keys: [
+      'dates/gregorian/weekdays/thursday',
+    ]
+  });
+}, RangeError);
+
+assertThrowsInstanceOf(() => {
+  gDN('en-US', {
+    style: 'bogus',
+    keys: [
+      'dates/gregorian/weekdays/thursday',
+    ]
+  });
+}, RangeError);
+
+assertThrowsInstanceOf(() => {
+  gDN('foo-X', {
+    keys: [
+      'dates/gregorian/weekdays/thursday',
+    ]
+  });
+}, RangeError);
+
+const typeErrorKeys = [
+  null,
+  'string',
+  Symbol.iterator,
+  15,
+  1,
+  3.7,
+  NaN,
+  Infinity
+];
+
+for (let keys of typeErrorKeys) {
+  assertThrowsInstanceOf(() => {
+    gDN('en-US', {
+      keys
+    });
+  }, TypeError);
+}
+
+const rangeErrorKeys = [
+  [''],
+  ['foo'],
+  ['dates/foo'],
+  ['/dates/foo'],
+  ['dates/foo/foo'],
+  ['dates/fields'],
+  ['dates/fields/'],
+  ['dates/fields/foo'],
+  ['dates/fields/foo/month'],
+  ['/dates/foo/faa/bar/baz'],
+  ['dates///bar/baz'],
+  ['dates/gregorian'],
+  ['dates/gregorian/'],
+  ['dates/gregorian/foo'],
+  ['dates/gregorian/months'],
+  ['dates/gregorian/months/foo'],
+  ['dates/gregorian/weekdays'],
+  ['dates/gregorian/weekdays/foo'],
+  ['dates/gregorian/dayperiods'],
+  ['dates/gregorian/dayperiods/foo'],
+  ['dates/gregorian/months/الشهر'],
+  [3],
+  [null],
+  ['d', 'a', 't', 'e', 's'],
+  ['datesEXTRA'],
+  ['dates/fieldsEXTRA'],
+  ['dates/gregorianEXTRA'],
+  ['dates/gregorian/monthsEXTRA'],
+  ['dates/gregorian/weekdaysEXTRA'],
+  ['dates/fields/dayperiods/amEXTRA'],
+  ['dates/gregori\u1161n/months/january'],
+  ["dates/fields/year/"],
+  ["dates/fields/month/"],
+  ["dates/fields/week/"],
+  ["dates/fields/day/"],
+  ["dates/gregorian/months/january/"],
+  ["dates/gregorian/weekdays/saturday/"],
+  ["dates/gregorian/dayperiods/am/"],
+  ["dates/fields/months/january/"],
+];
+
+for (let keys of rangeErrorKeys) {
+  assertThrowsInstanceOf(() => {
+    gDN('en-US', {
+      keys
+    });
+  }, RangeError);
+}
+
+if (typeof reportCompare === 'function')
+    reportCompare(0, 0);