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Add LRUCacheTest and MRUCacheTest (fixes #3263) (#3277)

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valjamwo
2022-09-19 19:55:15 +02:00
committed by GitHub
parent a2dd154ad6
commit d56eaa58af
4 changed files with 116 additions and 24 deletions
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58
src/test/java/com/thealgorithms/datastructures/caches/LRUCacheTest.java Normal file
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package com.thealgorithms.datastructures.caches;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
import org.junit.jupiter.api.Test;
public class LRUCacheTest {
private static final int SIZE = 5;
@Test
public void putAndGetIntegerValues() {
LRUCache<Integer, Integer> lruCache = new LRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put(i, i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals(i, lruCache.get(i));
}
}
@Test
public void putAndGetStringValues() {
LRUCache<String, String> lruCache = new LRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put("key" + i, "value" + i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals("value" + i, lruCache.get("key" + i));
}
}
@Test
public void nullKeysAndValues() {
LRUCache<Integer, Integer> mruCache = new LRUCache<>(SIZE);
mruCache.put(null, 2);
mruCache.put(6, null);
assertEquals(2, mruCache.get(null));
assertNull(mruCache.get(6));
}
@Test
public void overCapacity() {
LRUCache<Integer, Integer> mruCache = new LRUCache<>(SIZE);
for(int i = 0; i < 10; i++) {
mruCache.put(i, i);
}
assertEquals(9, mruCache.get(9));
}
}

58
src/test/java/com/thealgorithms/datastructures/caches/MRUCacheTest.java Normal file
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package com.thealgorithms.datastructures.caches;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;
public class MRUCacheTest {
private static final int SIZE = 5;
@Test
public void putAndGetIntegerValues() {
MRUCache<Integer, Integer> lruCache = new MRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put(i, i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals(i, lruCache.get(i));
}
}
@Test
public void putAndGetStringValues() {
MRUCache<String, String> lruCache = new MRUCache<>(SIZE);
for(int i = 0; i < SIZE; i++) {
lruCache.put("key" + i, "value" + i);
}
for(int i = 0; i < SIZE; i++) {
assertEquals("value" + i, lruCache.get("key" + i));
}
}
@Test
public void nullKeysAndValues() {
MRUCache<Integer, Integer> mruCache = new MRUCache<>(SIZE);
mruCache.put(null, 2);
mruCache.put(6, null);
assertEquals(2, mruCache.get(null));
assertNull(mruCache.get(6));
}
@Test
public void overCapacity() {
MRUCache<Integer, Integer> mruCache = new MRUCache<>(SIZE);
for(int i = 0; i < 10; i++) {
mruCache.put(i, i);
}
assertEquals(9, mruCache.get(9));
}
}