Use BCP47 compliant format for locale representation

base/android/junit/src/org/chromium/base/LocaleUtilsTest.java

Index: base/android/junit/src/org/chromium/base/LocaleUtilsTest.java
diff --git a/base/android/junit/src/org/chromium/base/LocaleUtilsTest.java b/base/android/junit/src/org/chromium/base/LocaleUtilsTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..25b35a9a2d24b11b61f0f8b4104ac26a50463dff
--- /dev/null
+++ b/base/android/junit/src/org/chromium/base/LocaleUtilsTest.java
@@ -0,0 +1,127 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.base;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+import org.chromium.testing.local.LocalRobolectricTestRunner;
+
+import java.util.Locale;
+
+/** Unit tests for the LocaleUtils class. */
+@RunWith(LocalRobolectricTestRunner.class)
+@Config(manifest = Config.NONE)
+public class LocaleUtilsTest {
+    // TODO(yirui): update tests for LocaleList once SDK Roll is completed.
+    @Test
+    public void testToLanguageTag() {
+        Locale locale = new Locale("en", "US");
+        String localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("en-US", localeString);
+
+        locale = new Locale("jp");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("jp", localeString);
+
+        locale = new Locale("mas");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("mas", localeString);
+
+        locale = new Locale("es", "005");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("es-005", localeString);
+
+        locale = new Locale("iw");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("he", localeString);
+
+        locale = new Locale("ji");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("yi", localeString);
+
+        locale = new Locale("in", "ID");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("id-ID", localeString);
+
+        locale = new Locale("tl", "PH");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("fil-PH", localeString);
+
+        locale = new Locale("no", "NO", "NY");
+        localeString = LocaleUtils.toLanguageTag(locale);
+        Assert.assertEquals("nn-NO", localeString);
+    }
+
+    @Test
+    public void testForLanguageTag() {
+        String languageTag = "";
+        Locale locale = new Locale("");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "en";
+        locale = new Locale("en");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "mas";
+        locale = new Locale("mas");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "en-GB";
+        locale = new Locale("en", "GB");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "es-419";
+        locale = new Locale("es", "419");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        // Tests if updated Chromium language code and deprecated language code
+        // are pointing to the same Locale Object.
+        languageTag = "he";
+        locale = new Locale("iw");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "iw";
+        locale = new Locale("he");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "ji";
+        locale = new Locale("yi");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "yi";
+        locale = new Locale("ji");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "in";
+        locale = new Locale("id");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "id";
+        locale = new Locale("in");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        // Tests for Tagalog/Filipino if updated Chromium language code and
+        // language code are pointing to the same Locale Object.
+        languageTag = "tl";
+        locale = new Locale("tl");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "fil";
+        locale = new Locale("tl");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        // Test with invalid inputs.
+        languageTag = "notValidLanguage";
+        locale = new Locale("");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+
+        languageTag = "en-notValidCountry";
+        locale = new Locale("en");
+        Assert.assertEquals(locale, LocaleUtils.forLanguageTag(languageTag));
+    }
+}