core/tests/coretests/src/android/view/textclassifier/TextLinksTest.java

/*
 * Copyright (C) 2017 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 org.junit.Assert.assertEquals;

import android.os.LocaleList;
import android.os.Parcel;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.SmallTest;
import android.support.test.runner.AndroidJUnit4;
import android.util.ArrayMap;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Locale;
import java.util.Map;

@SmallTest
@RunWith(AndroidJUnit4.class)
public class TextLinksTest {

    private TextClassificationManager mTcm;
    private TextClassifier mClassifier;

    @Before
    public void setup() {
        mTcm = InstrumentationRegistry.getTargetContext()
                .getSystemService(TextClassificationManager.class);
        mTcm.setTextClassifier(null);
        mClassifier = mTcm.getTextClassifier();
    }

    private Map<String, Float> getEntityScores(float address, float phone, float other) {
        final Map<String, Float> result = new ArrayMap<>();
        if (address > 0.f) {
            result.put(TextClassifier.TYPE_ADDRESS, address);
        }
        if (phone > 0.f) {
            result.put(TextClassifier.TYPE_PHONE, phone);
        }
        if (other > 0.f) {
            result.put(TextClassifier.TYPE_OTHER, other);
        }
        return result;
    }

    @Test
    public void testParcel() {
        final String fullText = "this is just a test";
        final TextLinks reference = new TextLinks.Builder(fullText)
                .addLink(new TextLinks.TextLink(fullText, 0, 4, getEntityScores(0.f, 0.f, 1.f)))
                .addLink(new TextLinks.TextLink(fullText, 5, 12, getEntityScores(.8f, .1f, .5f)))
                .build();

        // Parcel and unparcel.
        final Parcel parcel = Parcel.obtain();
        reference.writeToParcel(parcel, reference.describeContents());
        parcel.setDataPosition(0);
        final TextLinks result = TextLinks.CREATOR.createFromParcel(parcel);
        final List<TextLinks.TextLink> resultList = new ArrayList<>(result.getLinks());

        assertEquals(2, resultList.size());
        assertEquals(0, resultList.get(0).getStart());
        assertEquals(4, resultList.get(0).getEnd());
        assertEquals(1, resultList.get(0).getEntityCount());
        assertEquals(TextClassifier.TYPE_OTHER, resultList.get(0).getEntity(0));
        assertEquals(1.f, resultList.get(0).getConfidenceScore(TextClassifier.TYPE_OTHER), 1e-7f);
        assertEquals(5, resultList.get(1).getStart());
        assertEquals(12, resultList.get(1).getEnd());
        assertEquals(3, resultList.get(1).getEntityCount());
        assertEquals(TextClassifier.TYPE_ADDRESS, resultList.get(1).getEntity(0));
        assertEquals(TextClassifier.TYPE_OTHER, resultList.get(1).getEntity(1));
        assertEquals(TextClassifier.TYPE_PHONE, resultList.get(1).getEntity(2));
        assertEquals(.8f, resultList.get(1).getConfidenceScore(TextClassifier.TYPE_ADDRESS), 1e-7f);
        assertEquals(.5f, resultList.get(1).getConfidenceScore(TextClassifier.TYPE_OTHER), 1e-7f);
        assertEquals(.1f, resultList.get(1).getConfidenceScore(TextClassifier.TYPE_PHONE), 1e-7f);
    }

    @Test
    public void testParcelOptions() {
        TextClassifier.EntityConfig entityConfig = new TextClassifier.EntityConfig(
                TextClassifier.ENTITY_PRESET_NONE);
        entityConfig.includeEntities("a", "b", "c");
        entityConfig.excludeEntities("b");
        TextLinks.Options reference = new TextLinks.Options();
        reference.setDefaultLocales(new LocaleList(Locale.US, Locale.GERMANY));
        reference.setEntityConfig(entityConfig);

        // Parcel and unparcel.
        final Parcel parcel = Parcel.obtain();
        reference.writeToParcel(parcel, reference.describeContents());
        parcel.setDataPosition(0);
        TextLinks.Options result = TextLinks.Options.CREATOR.createFromParcel(parcel);

        assertEquals("en-US,de-DE", result.getDefaultLocales().toLanguageTags());
        assertEquals(Arrays.asList("a", "c"), result.getEntityConfig().getEntities(mClassifier));
    }
}