| /* |
| * Copyright (C) 2019 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.view.textclassifier; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import static org.testng.Assert.assertThrows; |
| |
| import androidx.test.filters.SmallTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @SmallTest |
| @RunWith(AndroidJUnit4.class) |
| public class TextClassifierUtilsTest { |
| |
| @Test |
| public void testGetSubString() { |
| final String text = "Yakuza call themselves 任侠団体"; |
| int start; |
| int end; |
| int minimumLength; |
| |
| // End index at end of text. |
| start = text.indexOf("任侠団体"); |
| end = text.length(); |
| minimumLength = 20; |
| assertThat(TextClassifier.Utils.getSubString(text, start, end, minimumLength)) |
| .isEqualTo("call themselves 任侠団体"); |
| |
| // Start index at beginning of text. |
| start = 0; |
| end = "Yakuza".length(); |
| minimumLength = 15; |
| assertThat(TextClassifier.Utils.getSubString(text, start, end, minimumLength)) |
| .isEqualTo("Yakuza call themselves"); |
| |
| // Text in the middle |
| start = text.indexOf("all"); |
| end = start + 1; |
| minimumLength = 10; |
| assertThat(TextClassifier.Utils.getSubString(text, start, end, minimumLength)) |
| .isEqualTo("Yakuza call themselves"); |
| |
| // Selection >= minimumLength. |
| start = text.indexOf("themselves"); |
| end = start + "themselves".length(); |
| minimumLength = end - start; |
| assertThat(TextClassifier.Utils.getSubString(text, start, end, minimumLength)) |
| .isEqualTo("themselves"); |
| |
| // text.length < minimumLength. |
| minimumLength = text.length() + 1; |
| assertThat(TextClassifier.Utils.getSubString(text, start, end, minimumLength)) |
| .isEqualTo(text); |
| } |
| |
| @Test |
| public void testGetSubString_invalidParams() { |
| final String text = "The Yoruba regard Olodumare as the principal agent of creation"; |
| final int length = text.length(); |
| final int minimumLength = 10; |
| |
| // Null text |
| assertThrows(() -> TextClassifier.Utils.getSubString(null, 0, 1, minimumLength)); |
| // start > end |
| assertThrows(() -> TextClassifier.Utils.getSubString(text, 6, 5, minimumLength)); |
| // start < 0 |
| assertThrows(() -> TextClassifier.Utils.getSubString(text, -1, 5, minimumLength)); |
| // end > text.length |
| assertThrows(() -> TextClassifier.Utils.getSubString(text, 6, length + 1, minimumLength)); |
| } |
| } |