| /* |
| * Copyright (C) 2010 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 android.text; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import android.platform.test.annotations.Presubmit; |
| import android.util.Log; |
| |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| /** |
| * Quick check of native bidi implementation. |
| */ |
| @Presubmit |
| @SmallTest |
| @RunWith(AndroidJUnit4.class) |
| public class StaticLayoutBidiTest { |
| |
| public static final int REQ_DL = 2; // Layout.DIR_REQUEST_DEFAULT_LTR; |
| public static final int REQ_DR = -2; // Layout.DIR_REQUEST_DEFAULT_RTL; |
| public static final int REQ_L = 1; // Layout.DIR_REQUEST_LTR; |
| public static final int REQ_R = -1; // Layout.DIR_REQUEST_RTL; |
| public static final int L = Layout.DIR_LEFT_TO_RIGHT; |
| public static final int R = Layout.DIR_RIGHT_TO_LEFT; |
| |
| public static final String SP = " "; |
| public static final String ALEF = "\u05d0"; |
| public static final String BET = "\u05d1"; |
| public static final String GIMEL = "\u05d2"; |
| public static final String DALET = "\u05d3"; |
| |
| @Test |
| public void testAllLtr() { |
| expectNativeBidi(REQ_DL, "a test", "000000", L); |
| } |
| |
| @Test |
| public void testLtrRtl() { |
| expectNativeBidi(REQ_DL, "abc " + ALEF + BET + GIMEL, "0000111", L); |
| } |
| |
| @Test |
| public void testAllRtl() { |
| expectNativeBidi(REQ_DL, ALEF + SP + ALEF + BET + GIMEL + DALET, "111111", R); |
| } |
| |
| @Test |
| public void testRtlLtr() { |
| expectNativeBidi(REQ_DL, ALEF + BET + GIMEL + " abc", "1111222", R); |
| } |
| |
| @Test |
| public void testRAllLtr() { |
| expectNativeBidi(REQ_R, "a test", "222222", R); |
| } |
| |
| @Test |
| public void testRLtrRtl() { |
| expectNativeBidi(REQ_R, "abc " + ALEF + BET + GIMEL, "2221111", R); |
| } |
| |
| @Test |
| public void testLAllRtl() { |
| expectNativeBidi(REQ_L, ALEF + SP + ALEF + BET + GIMEL + DALET, "111111", L); |
| } |
| |
| @Test |
| public void testLRtlLtr() { |
| expectNativeBidi(REQ_DL, ALEF + BET + GIMEL + " abc", "1111222", R); |
| } |
| |
| @Test |
| public void testNativeBidi() { |
| expectNativeBidi(REQ_L, ALEF + BET + GIMEL + " abc", "1110000", L); |
| } |
| |
| private void expectNativeBidi(int dir, String text, |
| String expectedLevels, int expectedDir) { |
| char[] chs = text.toCharArray(); |
| int n = chs.length; |
| byte[] chInfo = new byte[n]; |
| |
| int resultDir = AndroidBidi.bidi(dir, chs, chInfo); |
| |
| { |
| StringBuilder sb = new StringBuilder("info:"); |
| for (int i = 0; i < n; ++i) { |
| sb.append(" ").append(String.valueOf(chInfo[i])); |
| } |
| Log.i("BIDI", sb.toString()); |
| } |
| |
| char[] resultLevelChars = new char[n]; |
| for (int i = 0; i < n; ++i) { |
| resultLevelChars[i] = (char)('0' + chInfo[i]); |
| } |
| String resultLevels = new String(resultLevelChars); |
| assertEquals("direction", expectedDir, resultDir); |
| assertEquals("levels", expectedLevels, resultLevels); |
| } |
| } |