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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.view.textclassifier;
     18 
     19 import static org.junit.Assert.assertEquals;
     20 import static org.junit.Assert.assertThat;
     21 import static org.mockito.Mockito.mock;
     22 
     23 import android.os.LocaleList;
     24 import android.support.test.InstrumentationRegistry;
     25 import android.support.test.filters.SmallTest;
     26 import android.support.test.runner.AndroidJUnit4;
     27 
     28 import org.hamcrest.BaseMatcher;
     29 import org.hamcrest.Description;
     30 import org.hamcrest.Matcher;
     31 import org.junit.Before;
     32 import org.junit.Test;
     33 import org.junit.runner.RunWith;
     34 
     35 @SmallTest
     36 @RunWith(AndroidJUnit4.class)
     37 public class TextClassificationManagerTest {
     38 
     39     private static final LocaleList LOCALES = LocaleList.forLanguageTags("en");
     40     private static final String NO_TYPE = null;
     41 
     42     private TextClassificationManager mTcm;
     43     private TextClassifier mClassifier;
     44 
     45     @Before
     46     public void setup() {
     47         mTcm = InstrumentationRegistry.getTargetContext()
     48                 .getSystemService(TextClassificationManager.class);
     49         mTcm.setTextClassifier(null);
     50         mClassifier = mTcm.getTextClassifier();
     51     }
     52 
     53     @Test
     54     public void testSmartSelection() {
     55         if (isTextClassifierDisabled()) return;
     56 
     57         String text = "Contact me at droid (at) android.com";
     58         String selected = "droid";
     59         String suggested = "droid (at) android.com";
     60         int startIndex = text.indexOf(selected);
     61         int endIndex = startIndex + selected.length();
     62         int smartStartIndex = text.indexOf(suggested);
     63         int smartEndIndex = smartStartIndex + suggested.length();
     64 
     65         assertThat(mClassifier.suggestSelection(text, startIndex, endIndex, LOCALES),
     66                 isTextSelection(smartStartIndex, smartEndIndex, TextClassifier.TYPE_EMAIL));
     67     }
     68 
     69     @Test
     70     public void testSmartSelection_nullLocaleList() {
     71         if (isTextClassifierDisabled()) return;
     72 
     73         String text = "Contact me at droid (at) android.com";
     74         String selected = "droid";
     75         String suggested = "droid (at) android.com";
     76         int startIndex = text.indexOf(selected);
     77         int endIndex = startIndex + selected.length();
     78         int smartStartIndex = text.indexOf(suggested);
     79         int smartEndIndex = smartStartIndex + suggested.length();
     80         LocaleList nullLocales = null;
     81 
     82         assertThat(mClassifier.suggestSelection(text, startIndex, endIndex, nullLocales),
     83                 isTextSelection(smartStartIndex, smartEndIndex, TextClassifier.TYPE_EMAIL));
     84     }
     85 
     86     @Test
     87     public void testSmartSelection_url() {
     88         if (isTextClassifierDisabled()) return;
     89 
     90         String text = "Visit http://www.android.com for more information";
     91         String selected = "http";
     92         String suggested = "http://www.android.com";
     93         int startIndex = text.indexOf(selected);
     94         int endIndex = startIndex + selected.length();
     95         int smartStartIndex = text.indexOf(suggested);
     96         int smartEndIndex = smartStartIndex + suggested.length();
     97 
     98         assertThat(mClassifier.suggestSelection(text, startIndex, endIndex, LOCALES),
     99                 isTextSelection(smartStartIndex, smartEndIndex, TextClassifier.TYPE_URL));
    100     }
    101 
    102     @Test
    103     public void testSmartSelection_withEmoji() {
    104         if (isTextClassifierDisabled()) return;
    105 
    106         String text = "\uD83D\uDE02 Hello.";
    107         String selected = "Hello";
    108         int startIndex = text.indexOf(selected);
    109         int endIndex = startIndex + selected.length();
    110 
    111         assertThat(mClassifier.suggestSelection(text, startIndex, endIndex, LOCALES),
    112                 isTextSelection(startIndex, endIndex, NO_TYPE));
    113     }
    114 
    115     @Test
    116     public void testClassifyText() {
    117         if (isTextClassifierDisabled()) return;
    118 
    119         String text = "Contact me at droid (at) android.com";
    120         String classifiedText = "droid (at) android.com";
    121         int startIndex = text.indexOf(classifiedText);
    122         int endIndex = startIndex + classifiedText.length();
    123         assertThat(mClassifier.classifyText(text, startIndex, endIndex, LOCALES),
    124                 isTextClassification(
    125                         classifiedText,
    126                         TextClassifier.TYPE_EMAIL,
    127                         "mailto:" + classifiedText));
    128     }
    129 
    130     @Test
    131     public void testTextClassifyText_url() {
    132         if (isTextClassifierDisabled()) return;
    133 
    134         String text = "Visit www.android.com for more information";
    135         String classifiedText = "www.android.com";
    136         int startIndex = text.indexOf(classifiedText);
    137         int endIndex = startIndex + classifiedText.length();
    138         assertThat(mClassifier.classifyText(text, startIndex, endIndex, LOCALES),
    139                 isTextClassification(
    140                         classifiedText,
    141                         TextClassifier.TYPE_URL,
    142                         "http://" + classifiedText));
    143     }
    144 
    145     @Test
    146     public void testTextClassifyText_url_inCaps() {
    147         if (isTextClassifierDisabled()) return;
    148 
    149         String text = "Visit HTTP://ANDROID.COM for more information";
    150         String classifiedText = "HTTP://ANDROID.COM";
    151         int startIndex = text.indexOf(classifiedText);
    152         int endIndex = startIndex + classifiedText.length();
    153         assertThat(mClassifier.classifyText(text, startIndex, endIndex, LOCALES),
    154                 isTextClassification(
    155                         classifiedText,
    156                         TextClassifier.TYPE_URL,
    157                         "http://ANDROID.COM"));
    158     }
    159 
    160     @Test
    161     public void testTextClassifyText_nullLocaleList() {
    162         if (isTextClassifierDisabled()) return;
    163 
    164         String text = "Contact me at droid (at) android.com";
    165         String classifiedText = "droid (at) android.com";
    166         int startIndex = text.indexOf(classifiedText);
    167         int endIndex = startIndex + classifiedText.length();
    168         LocaleList nullLocales = null;
    169         assertThat(mClassifier.classifyText(text, startIndex, endIndex, nullLocales),
    170                 isTextClassification(
    171                         classifiedText,
    172                         TextClassifier.TYPE_EMAIL,
    173                         "mailto:" + classifiedText));
    174     }
    175 
    176     @Test
    177     public void testSetTextClassifier() {
    178         TextClassifier classifier = mock(TextClassifier.class);
    179         mTcm.setTextClassifier(classifier);
    180         assertEquals(classifier, mTcm.getTextClassifier());
    181     }
    182 
    183     private boolean isTextClassifierDisabled() {
    184         return mClassifier == TextClassifier.NO_OP;
    185     }
    186 
    187     private static Matcher<TextSelection> isTextSelection(
    188             final int startIndex, final int endIndex, final String type) {
    189         return new BaseMatcher<TextSelection>() {
    190             @Override
    191             public boolean matches(Object o) {
    192                 if (o instanceof TextSelection) {
    193                     TextSelection selection = (TextSelection) o;
    194                     return startIndex == selection.getSelectionStartIndex()
    195                             && endIndex == selection.getSelectionEndIndex()
    196                             && typeMatches(selection, type);
    197                 }
    198                 return false;
    199             }
    200 
    201             private boolean typeMatches(TextSelection selection, String type) {
    202                 return type == null
    203                         || (selection.getEntityCount() > 0
    204                                 && type.trim().equalsIgnoreCase(selection.getEntity(0)));
    205             }
    206 
    207             @Override
    208             public void describeTo(Description description) {
    209                 description.appendValue(
    210                         String.format("%d, %d, %s", startIndex, endIndex, type));
    211             }
    212         };
    213     }
    214 
    215     private static Matcher<TextClassification> isTextClassification(
    216             final String text, final String type, final String intentUri) {
    217         return new BaseMatcher<TextClassification>() {
    218             @Override
    219             public boolean matches(Object o) {
    220                 if (o instanceof TextClassification) {
    221                     TextClassification result = (TextClassification) o;
    222                     final boolean typeRequirementSatisfied;
    223                     String scheme;
    224                     switch (type) {
    225                         case TextClassifier.TYPE_EMAIL:
    226                             scheme = result.getIntent().getData().getScheme();
    227                             typeRequirementSatisfied = "mailto".equals(scheme);
    228                             break;
    229                         case TextClassifier.TYPE_URL:
    230                             scheme = result.getIntent().getData().getScheme();
    231                             typeRequirementSatisfied = "http".equals(scheme)
    232                                     || "https".equals(scheme);
    233                             break;
    234                         default:
    235                             typeRequirementSatisfied = true;
    236                     }
    237 
    238                     return typeRequirementSatisfied
    239                             && text.equals(result.getText())
    240                             && result.getEntityCount() > 0
    241                             && type.equals(result.getEntity(0))
    242                             && intentUri.equals(result.getIntent().getDataString());
    243                     // TODO: Include other properties.
    244                 }
    245                 return false;
    246             }
    247 
    248             @Override
    249             public void describeTo(Description description) {
    250                 description.appendText("text=").appendValue(text)
    251                         .appendText(", type=").appendValue(type)
    252                         .appendText(", intent.data=").appendValue(intentUri);
    253             }
    254         };
    255     }
    256 }
    257