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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.inputmethod.compat;
import android.graphics.Typeface;
import android.os.Build;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.StyleSpan;
import java.util.Locale;
@SmallTest
public class LocaleSpanCompatUtilsTests extends AndroidTestCase {
public void testInstantiatable() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
// LocaleSpan isn't yet available.
return;
}
assertTrue(LocaleSpanCompatUtils.isLocaleSpanAvailable());
final Object japaneseLocaleSpan = LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE);
assertNotNull(japaneseLocaleSpan);
assertEquals(Locale.JAPANESE,
LocaleSpanCompatUtils.getLocaleFromLocaleSpan(japaneseLocaleSpan));
}
private static void assertLocaleSpan(final Spanned spanned, final int index,
final int expectedStart, final int expectedEnd,
final Locale expectedLocale, final int expectedSpanFlags) {
final Object span = spanned.getSpans(0, spanned.length(), Object.class)[index];
assertEquals(expectedLocale, LocaleSpanCompatUtils.getLocaleFromLocaleSpan(span));
assertEquals(expectedStart, spanned.getSpanStart(span));
assertEquals(expectedEnd, spanned.getSpanEnd(span));
assertEquals(expectedSpanFlags, spanned.getSpanFlags(span));
}
private static void assertSpanEquals(final Object expectedSpan, final Spanned spanned,
final int index) {
final Object[] spans = spanned.getSpans(0, spanned.length(), Object.class);
assertEquals(expectedSpan, spans[index]);
}
private static void assertSpanCount(final int expectedCount, final Spanned spanned) {
final Object[] spans = spanned.getSpans(0, spanned.length(), Object.class);
assertEquals(expectedCount, spans.length);
}
public void testUpdateLocaleSpan() {
if (!LocaleSpanCompatUtils.isLocaleSpanAvailable()) {
return;
}
// Test if the simplest case works.
{
final SpannableString text = new SpannableString("0123456789");
LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 5, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if only LocaleSpans are updated.
{
final SpannableString text = new SpannableString("0123456789");
final StyleSpan styleSpan = new StyleSpan(Typeface.BOLD);
text.setSpan(styleSpan, 0, 7, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 5, Locale.JAPANESE);
assertSpanCount(2, text);
assertSpanEquals(styleSpan, text, 0);
assertLocaleSpan(text, 1, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if two jointed spans are merged into one span.
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 3,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 5, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if two overlapped spans are merged into one span.
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 4,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 5, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if three overlapped spans are merged into one span.
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 4,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 5, 6,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 2, 8, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 8, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if disjoint spans remain disjoint.
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 3,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 5, 6,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 8, 9, Locale.JAPANESE);
assertSpanCount(3, text);
assertLocaleSpan(text, 0, 1, 3, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
assertLocaleSpan(text, 1, 5, 6, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
assertLocaleSpan(text, 2, 8, 9, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if existing span flags are preserved during merge.
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 5,
Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 4, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 5, Locale.JAPANESE,
Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
}
// Test if existing span flags are preserved even when partially overlapped (leading edge).
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 1, 5,
Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 3, 7, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 7, Locale.JAPANESE,
Spanned.SPAN_INCLUSIVE_EXCLUSIVE | Spanned.SPAN_INTERMEDIATE);
}
// Test if existing span flags are preserved even when partially overlapped (trailing edge).
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.JAPANESE), 3, 7,
Spanned.SPAN_INCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 5, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 7, Locale.JAPANESE,
Spanned.SPAN_EXCLUSIVE_INCLUSIVE | Spanned.SPAN_INTERMEDIATE);
}
// Test if existing locale span will be removed when the locale doesn't match.
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 5,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 1, 7, Locale.JAPANESE);
assertSpanCount(1, text);
assertLocaleSpan(text, 0, 1, 7, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if existing locale span will be removed when the locale doesn't match. (case 2)
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 7,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 5, 6, Locale.JAPANESE);
assertSpanCount(3, text);
assertLocaleSpan(text, 0, 3, 5, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
assertLocaleSpan(text, 1, 6, 7, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
assertLocaleSpan(text, 2, 5, 6, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if existing locale span will be removed when the locale doesn't match. (case 3)
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 7,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 2, 5, Locale.JAPANESE);
assertSpanCount(2, text);
assertLocaleSpan(text, 0, 5, 7, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
assertLocaleSpan(text, 1, 2, 5, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
// Test if existing locale span will be removed when the locale doesn't match. (case 3)
{
final SpannableString text = new SpannableString("0123456789");
text.setSpan(LocaleSpanCompatUtils.newLocaleSpan(Locale.ENGLISH), 3, 7,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
LocaleSpanCompatUtils.updateLocaleSpan(text, 5, 8, Locale.JAPANESE);
assertSpanCount(2, text);
assertLocaleSpan(text, 0, 3, 5, Locale.ENGLISH, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
assertLocaleSpan(text, 1, 5, 8, Locale.JAPANESE, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
}
}
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