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Sampada
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BAEL-3894: Apache Commons vs Google Guava (eugenp#10206)
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‎libraries-6/src/test/java/com/baeldung/apache/commons/CollectionsUnitTest.java‎

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package com.baeldung.apache.commons;
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import static org.junit.Assert.assertArrayEquals;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import org.apache.commons.collections4.BidiMap;
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import org.apache.commons.collections4.MultiValuedMap;
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import org.apache.commons.collections4.bidimap.TreeBidiMap;
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import org.apache.commons.collections4.map.MultiKeyMap;
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import org.apache.commons.collections4.multimap.ArrayListValuedHashMap;
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import org.junit.Test;
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public class CollectionsUnitTest {
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private final static BidiMap<Integer, String> daysOfWeek = new TreeBidiMap<Integer, String>();
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private final static MultiValuedMap<String, String> groceryCart = new ArrayListValuedHashMap<>();
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private final static MultiKeyMap<String, String> days = new MultiKeyMap<String, String>();
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private final static MultiKeyMap<String, String> cityCoordinates = new MultiKeyMap<String, String>();
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static {
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daysOfWeek.put(1, "Monday");
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daysOfWeek.put(2, "Tuesday");
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daysOfWeek.put(3, "Wednesday");
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daysOfWeek.put(4, "Thursday");
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daysOfWeek.put(5, "Friday");
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daysOfWeek.put(6, "Saturday");
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daysOfWeek.put(7, "Sunday");
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groceryCart.put("Fruits", "Apple");
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groceryCart.put("Fruits", "Grapes");
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groceryCart.put("Fruits", "Strawberries");
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groceryCart.put("Vegetables", "Spinach");
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groceryCart.put("Vegetables", "Cabbage");
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days.put("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Weekday");
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days.put("Saturday", "Sunday", "Weekend");
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cityCoordinates.put("40.7128° N", "74.0060° W", "New York");
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cityCoordinates.put("48.8566° N", "2.3522° E", "Paris");
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cityCoordinates.put("19.0760° N", "72.8777° E", "Mumbai");
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}
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@Test
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public void givenBidiMap_whenValue_thenKeyReturned() {
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assertEquals(Integer.valueOf(7), daysOfWeek.inverseBidiMap()
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.get("Sunday"));
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}
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@Test
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public void givenBidiMap_whenKey_thenValueReturned() {
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assertEquals("Tuesday", daysOfWeek.get(2));
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}
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@Test
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public void givenMultiValuedMap_whenFruitsFetched_thenFruitsReturned() {
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List<String> fruits = Arrays.asList("Apple", "Grapes", "Strawberries");
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assertEquals(fruits, groceryCart.get("Fruits"));
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}
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@Test
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public void givenMultiValuedMap_whenVeggiesFetched_thenVeggiesReturned() {
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List<String> veggies = Arrays.asList("Spinach", "Cabbage");
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assertEquals(veggies, groceryCart.get("Vegetables"));
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}
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@Test
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public void givenMultiValuedMap_whenFuitsRemoved_thenVeggiesPreserved() {
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assertEquals(5, groceryCart.size());
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groceryCart.remove("Fruits");
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assertEquals(2, groceryCart.size());
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}
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@Test
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public void givenDaysMultiKeyMap_whenFetched_thenOK() {
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assertFalse(days.get("Saturday", "Sunday")
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.equals("Weekday"));
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}
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@Test
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public void givenCoordinatesMultiKeyMap_whenQueried_thenOK() {
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List<String> expectedLongitudes = Arrays.asList("72.8777° E", "2.3522° E", "74.0060° W");
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List<String> longitudes = new ArrayList<>();
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cityCoordinates.forEach((key, value) -> {
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longitudes.add(key.getKey(1));
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});
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assertArrayEquals(expectedLongitudes.toArray(), longitudes.toArray());
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List<String> expectedCities = Arrays.asList("Mumbai", "Paris", "New York");
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List<String> cities = new ArrayList<>();
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cityCoordinates.forEach((key, value) -> {
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cities.add(value);
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});
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assertArrayEquals(expectedCities.toArray(), cities.toArray());
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}
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}

‎libraries-6/src/test/java/com/baeldung/guava/GuavaUnitTest.java‎

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package com.baeldung.guava;
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import static org.junit.Assert.assertArrayEquals;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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import java.util.Arrays;
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import java.util.List;
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import org.junit.Test;
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import com.google.common.collect.ArrayListMultimap;
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import com.google.common.collect.BiMap;
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import com.google.common.collect.HashBasedTable;
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import com.google.common.collect.HashBiMap;
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import com.google.common.collect.Multimap;
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import com.google.common.collect.Table;
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public class GuavaUnitTest {
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private final static BiMap<Integer, String> daysOfWeek = HashBiMap.create();
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private final static Multimap<String, String> groceryCart = ArrayListMultimap.create();
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private final static Table<String, String, String> cityCoordinates = HashBasedTable.create();
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private final static Table<String, String, String> movies = HashBasedTable.create();
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static {
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daysOfWeek.put(1, "Monday");
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daysOfWeek.put(2, "Tuesday");
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daysOfWeek.put(3, "Wednesday");
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daysOfWeek.put(4, "Thursday");
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daysOfWeek.put(5, "Friday");
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daysOfWeek.put(6, "Saturday");
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daysOfWeek.put(7, "Sunday");
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groceryCart.put("Fruits", "Apple");
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groceryCart.put("Fruits", "Grapes");
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groceryCart.put("Fruits", "Strawberries");
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groceryCart.put("Vegetables", "Spinach");
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groceryCart.put("Vegetables", "Cabbage");
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cityCoordinates.put("40.7128° N", "74.0060° W", "New York");
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cityCoordinates.put("48.8566° N", "2.3522° E", "Paris");
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cityCoordinates.put("19.0760° N", "72.8777° E", "Mumbai");
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movies.put("Tom Hanks", "Meg Ryan", "You've Got Mail");
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movies.put("Tom Hanks", "Catherine Zeta-Jones", "The Terminal");
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movies.put("Bradley Cooper", "Lady Gaga", "A Star is Born");
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movies.put("Keenu Reaves", "Sandra Bullock", "Speed");
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movies.put("Tom Hanks", "Sandra Bullock", "Extremely Loud & Incredibly Close");
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}
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@Test
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public void givenBiMap_whenValue_thenKeyReturned() {
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assertEquals(Integer.valueOf(7), daysOfWeek.inverse()
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.get("Sunday"));
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}
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@Test
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public void givenBiMap_whenKey_thenValueReturned() {
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assertEquals("Tuesday", daysOfWeek.get(2));
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}
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@Test
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public void givenMultiValuedMap_whenFruitsFetched_thenFruitsReturned() {
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List<String> fruits = Arrays.asList("Apple", "Grapes", "Strawberries");
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assertEquals(fruits, groceryCart.get("Fruits"));
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}
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@Test
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public void givenMultiValuedMap_whenVeggiesFetched_thenVeggiesReturned() {
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List<String> veggies = Arrays.asList("Spinach", "Cabbage");
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assertEquals(veggies, groceryCart.get("Vegetables"));
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}
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@Test
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public void givenMultiValuedMap_whenFuitsRemoved_thenVeggiesPreserved() {
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assertEquals(5, groceryCart.size());
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groceryCart.remove("Fruits", "Apple");
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assertEquals(4, groceryCart.size());
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groceryCart.removeAll("Fruits");
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assertEquals(2, groceryCart.size());
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}
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@Test
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public void givenCoordinatesTable_whenFetched_thenOK() {
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List<String> expectedLongitudes = Arrays.asList("74.0060° W", "2.3522° E", "72.8777° E");
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assertArrayEquals(expectedLongitudes.toArray(), cityCoordinates.columnKeySet()
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.toArray());
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List<String> expectedCities = Arrays.asList("New York", "Paris", "Mumbai");
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assertArrayEquals(expectedCities.toArray(), cityCoordinates.values()
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.toArray());
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assertTrue(cityCoordinates.rowKeySet()
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.contains("48.8566° N"));
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}
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@Test
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public void givenMoviesTable_whenFetched_thenOK() {
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assertEquals(3, movies.row("Tom Hanks")
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.size());
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assertEquals(2, movies.column("Sandra Bullock")
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.size());
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assertEquals("A Star is Born", movies.get("Bradley Cooper", "Lady Gaga"));
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assertTrue(movies.containsValue("Speed"));
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}
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}

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