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BAEL-3894: Apache Commons vs Google Guava (#10206)

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Sampada 2020-10-27 01:22:23 +05:30 committed by GitHub
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109
libraries-6/src/test/java/com/baeldung/apache/commons/CollectionsUnitTest.java Normal file
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package com.baeldung.apache.commons;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.collections4.BidiMap;
import org.apache.commons.collections4.MultiValuedMap;
import org.apache.commons.collections4.bidimap.TreeBidiMap;
import org.apache.commons.collections4.map.MultiKeyMap;
import org.apache.commons.collections4.multimap.ArrayListValuedHashMap;
import org.junit.Test;
public class CollectionsUnitTest {
private final static BidiMap<Integer, String> daysOfWeek = new TreeBidiMap<Integer, String>();
private final static MultiValuedMap<String, String> groceryCart = new ArrayListValuedHashMap<>();
private final static MultiKeyMap<String, String> days = new MultiKeyMap<String, String>();
private final static MultiKeyMap<String, String> cityCoordinates = new MultiKeyMap<String, String>();
static {
daysOfWeek.put(1, "Monday");
daysOfWeek.put(2, "Tuesday");
daysOfWeek.put(3, "Wednesday");
daysOfWeek.put(4, "Thursday");
daysOfWeek.put(5, "Friday");
daysOfWeek.put(6, "Saturday");
daysOfWeek.put(7, "Sunday");
groceryCart.put("Fruits", "Apple");
groceryCart.put("Fruits", "Grapes");
groceryCart.put("Fruits", "Strawberries");
groceryCart.put("Vegetables", "Spinach");
groceryCart.put("Vegetables", "Cabbage");
days.put("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Weekday");
days.put("Saturday", "Sunday", "Weekend");
cityCoordinates.put("40.7128° N", "74.0060° W", "New York");
cityCoordinates.put("48.8566° N", "2.3522° E", "Paris");
cityCoordinates.put("19.0760° N", "72.8777° E", "Mumbai");
}
@Test
public void givenBidiMap_whenValue_thenKeyReturned() {
assertEquals(Integer.valueOf(7), daysOfWeek.inverseBidiMap()
.get("Sunday"));
}
@Test
public void givenBidiMap_whenKey_thenValueReturned() {
assertEquals("Tuesday", daysOfWeek.get(2));
}
@Test
public void givenMultiValuedMap_whenFruitsFetched_thenFruitsReturned() {
List<String> fruits = Arrays.asList("Apple", "Grapes", "Strawberries");
assertEquals(fruits, groceryCart.get("Fruits"));
}
@Test
public void givenMultiValuedMap_whenVeggiesFetched_thenVeggiesReturned() {
List<String> veggies = Arrays.asList("Spinach", "Cabbage");
assertEquals(veggies, groceryCart.get("Vegetables"));
}
@Test
public void givenMultiValuedMap_whenFuitsRemoved_thenVeggiesPreserved() {
assertEquals(5, groceryCart.size());
groceryCart.remove("Fruits");
assertEquals(2, groceryCart.size());
}
@Test
public void givenDaysMultiKeyMap_whenFetched_thenOK() {
assertFalse(days.get("Saturday", "Sunday")
.equals("Weekday"));
}
@Test
public void givenCoordinatesMultiKeyMap_whenQueried_thenOK() {
List<String> expectedLongitudes = Arrays.asList("72.8777° E", "2.3522° E", "74.0060° W");
List<String> longitudes = new ArrayList<>();
cityCoordinates.forEach((key, value) -> {
longitudes.add(key.getKey(1));
});
assertArrayEquals(expectedLongitudes.toArray(), longitudes.toArray());
List<String> expectedCities = Arrays.asList("Mumbai", "Paris", "New York");
List<String> cities = new ArrayList<>();
cityCoordinates.forEach((key, value) -> {
cities.add(value);
});
assertArrayEquals(expectedCities.toArray(), cities.toArray());
}
}

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