adservices/tests/unittest/service-core/src/com/android/adservices/service/measurement/FilterMapTest.java

/*
 * Copyright (C) 2022 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.adservices.service.measurement;

import static com.google.common.truth.Truth.assertThat;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;

import androidx.test.filters.SmallTest;

import org.json.JSONException;
import org.json.JSONObject;
import org.junit.Test;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

/** Unit tests for {@link FilterMap} */
@SmallTest
public final class FilterMapTest {

    @Test
    public void testCreation() throws Exception {
        FilterMap attributionFilterMap = createExample();

        assertEquals(attributionFilterMap.getAttributionFilterMap().size(), 2);
        assertEquals(attributionFilterMap.getAttributionFilterMap().get("type").size(), 4);
        assertEquals(attributionFilterMap.getAttributionFilterMap().get("ctid").size(), 1);
    }

    @Test
    public void testDefaults() throws Exception {
        FilterMap data = new FilterMap.Builder().build();
        assertEquals(data.getAttributionFilterMap().size(), 0);
    }

    @Test
    public void testHashCode_equals() throws Exception {
        final FilterMap data1 = createExample();
        final FilterMap data2 = createExample();
        final Set<FilterMap> dataSet1 = Set.of(data1);
        final Set<FilterMap> dataSet2 = Set.of(data2);
        assertEquals(data1.hashCode(), data2.hashCode());
        assertEquals(data1, data2);
        assertEquals(dataSet1, dataSet2);
    }

    @Test
    public void testHashCode_notEquals() throws Exception {
        final FilterMap data1 = createExample();

        Map<String, List<String>> attributionFilterMap = new HashMap<>();
        attributionFilterMap.put("type", Arrays.asList("2", "3", "4"));
        attributionFilterMap.put("ctid", Collections.singletonList("id"));

        final FilterMap data2 =
                new FilterMap.Builder()
                        .setAttributionFilterMap(attributionFilterMap)
                        .build();
        final Set<FilterMap> dataSet1 = Set.of(data1);
        final Set<FilterMap> dataSet2 = Set.of(data2);
        assertNotEquals(data1.hashCode(), data2.hashCode());
        assertNotEquals(data1, data2);
        assertNotEquals(dataSet1, dataSet2);
    }

    @Test
    public void serializeAsJson_success() throws JSONException {
        // Setup
        FilterMap expected = createExample();

        // Execution
        JSONObject jsonObject = expected.serializeAsJson();
        FilterMap actual = new FilterMap.Builder().buildFilterData(jsonObject).build();

        // Assertion
        assertEquals(expected, actual);
    }

    @Test
    public void serializeAsJsonV2_success() throws JSONException {
        // Setup
        FilterMap expected = createExampleV2();

        // Execution
        JSONObject jsonObject = expected.serializeAsJsonV2();
        FilterMap actual = new FilterMap.Builder().buildFilterDataV2(jsonObject).build();

        // Assertion
        assertEquals(expected, actual);
    }

    @Test
    public void testAddLongValue() {
        assertThat(new FilterMap.Builder().addLongValue("a", 1L).build().getLongValue("a"))
                .isEqualTo(1L);
    }

    @Test
    public void testAddStringListValue() {
        List<String> stringList = Arrays.asList("123", "456");
        assertThat(
                        new FilterMap.Builder()
                                .addStringListValue("a", stringList)
                                .build()
                                .getStringListValue("a"))
                .isEqualTo(stringList);
    }

    private FilterMap createExample() {
        Map<String, List<String>> attributionFilterMap = new HashMap<>();
        attributionFilterMap.put("type", Arrays.asList("1", "2", "3", "4"));
        attributionFilterMap.put("ctid", Collections.singletonList("id"));

        return new FilterMap.Builder()
                .setAttributionFilterMap(attributionFilterMap)
                .build();
    }

    private FilterMap createExampleV2() {
        Map<String, FilterValue> attributionFilterMap = new HashMap<>();
        attributionFilterMap.put(
                "type", FilterValue.ofStringList(Arrays.asList("1", "2", "3", "4")));
        attributionFilterMap.put("ctid", FilterValue.ofStringList(Collections.singletonList("id")));

        return new FilterMap.Builder()
                .setAttributionFilterMapWithLongValue(attributionFilterMap)
                .build();
    }
}