js/src/jsapi-tests/testDateToLocaleString.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "js/LocaleSensitive.h"
   9 #include "jsapi-tests/tests.h"
  10
  11 BEGIN_TEST(testDateToLocaleString) {
  12   JSRuntime* rt = JS_GetRuntime(cx);
  13
  14   // This test should only attempt to run if we have Intl support: necessary
  15   // to properly assume that changes to the default locale will predictably
  16   // affect the behavior of the locale-sensitive Date methods tested here.
  17   JS::Rooted<JS::Value> haveIntl(cx);
  18   EVAL("typeof Intl !== 'undefined'", &haveIntl);
  19   if (!haveIntl.toBoolean()) {
  20     return true;
  21   }
  22
  23   // Pervasive assumption: our Intl support includes "de" (German) and
  24   // "en" (English) and treats them differently for purposes of
  25   // Date.prototype.toLocale{,Date,Time}String behavior.
  26
  27   // Start with German.
  28   CHECK(JS_SetDefaultLocale(rt, "de"));
  29
  30   // The (constrained) Date object we'll use to test behavior.
  31   EXEC("var d = new Date(Date.UTC(2015, 9 - 1, 17));");
  32
  33   // Test that toLocaleString behavior changes with default locale changes.
  34   EXEC("var deAll = d.toLocaleString();");
  35
  36   CHECK(JS_SetDefaultLocale(rt, "en"));
  37   EXEC(
  38       "if (d.toLocaleString() === deAll) \n"
  39       "  throw 'toLocaleString results should have changed with system locale "
  40       "change';");
  41
  42   // Test that toLocaleDateString behavior changes with default locale changes.
  43   EXEC("var enDate = d.toLocaleDateString();");
  44
  45   CHECK(JS_SetDefaultLocale(rt, "de"));
  46   EXEC(
  47       "if (d.toLocaleDateString() === enDate) \n"
  48       "  throw 'toLocaleDateString results should have changed with system "
  49       "locale change';");
  50
  51   // Test that toLocaleTimeString behavior changes with default locale changes.
  52   EXEC("var deTime = d.toLocaleTimeString();");
  53
  54   CHECK(JS_SetDefaultLocale(rt, "en"));
  55   EXEC(
  56       "if (d.toLocaleTimeString() === deTime) \n"
  57       "  throw 'toLocaleTimeString results should have changed with system "
  58       "locale change';");
  59
  60   JS_ResetDefaultLocale(rt);
  61   return true;
  62 }
  63 END_TEST(testDateToLocaleString)