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BAEL-5348: Fixed tests based on review comments

This commit is contained in:
Palaniappan Arunachalam 2022-02-15 23:30:00 +05:30
parent 4b1630dc3f
commit 5538a7686f
1 changed files with 24 additions and 12 deletions
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36
java-collections-maps-3/src/test/java/com/baeldung/map/invert/InvertHashMapUnitTest.java
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@ -1,5 +1,6 @@
package com.baeldung.map.invert;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
@ -8,7 +9,7 @@ import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInstance;
@ -17,44 +18,55 @@ public class InvertHashMapUnitTest {
Map<String, Integer> sourceMap;
@BeforeAll
@BeforeEach
void setup() {
sourceMap = new HashMap<>();
sourceMap.put("Sunday", 0);
sourceMap.put("Monday", 1);
sourceMap.put("Tuesday", 2);
sourceMap.put("Wednesday", 3);
sourceMap.put("Thursday", 4);
sourceMap.put("Friday", 5);
sourceMap.put("Saturday", 6);
}
@Test
void test1_invertMapUsingForLoop() {
void givenSourceMap_whenUsingForLoop_returnsInvertedMap() {
Map<Integer, String> inversedMap = InvertHashMapExample.invertMapUsingForLoop(sourceMap);
assertNotNull(inversedMap);
assertEquals(inversedMap.size(), 2);
assertEquals(sourceMap.size(), inversedMap.size());
assertEquals("Monday", inversedMap.get(1));
}
@Test
void test2_invertMapUsingStreams() {
void givenSourceMap_whenUsingStreams_returnsInvertedMap() {
Map<Integer, String> inversedMap = InvertHashMapExample.invertMapUsingStreams(sourceMap);
assertNotNull(inversedMap);
assertEquals(inversedMap.size(), 2);
assertEquals(sourceMap.size(), inversedMap.size());
assertEquals("Monday", inversedMap.get(1));
}
@Test
void test3_invertMapUsingMapper() {
void givenSourceMap_whenUsingMapper_returnsInvertedMap() {
Map<Integer, String> inversedMap = InvertHashMapExample.invertMapUsingMapper(sourceMap);
assertNotNull(inversedMap);
assertEquals(inversedMap.size(), 2);
assertEquals(sourceMap.size(), inversedMap.size());
assertEquals("Monday", inversedMap.get(1));
}
@Test
void test4_invertMapUsingGroupingBy() {
sourceMap.put("monday", 1);
void givenSourceMapWithDuplicateValues_whenUsingGroupBy_returnsInvertedMap() {
sourceMap.put("MONDAY", 1);
Map<Integer, List<String>> inversedMap = InvertHashMapExample.invertMapUsingGroupingBy(sourceMap);
assertNotNull(inversedMap);
assertEquals(inversedMap.size(), 2);
assertTrue(inversedMap.get(1) instanceof List);
assertNotEquals(sourceMap.size(), inversedMap.size()); // duplicate keys are merged now
assertEquals(2, inversedMap.get(1).size());
assertTrue(inversedMap.get(1).contains("Monday"));
assertTrue(inversedMap.get(1).contains("MONDAY"));
}
}