Java/src/test/java/com/caching/LRUCacheTest.java at Development · iDev-git/Java · GitHub

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package com.caching;

import org.junit.jupiter.api.Assertions;

import org.junit.jupiter.api.Test;

import java.util.NoSuchElementException;

public class LRUCacheTest {

@Test

public void testLFUCache() {

LRUCache<Integer> cache = new LRUCache<Integer>(2);

cache.put(1, 5);

cache.put(2, 4);

Assertions.assertEquals(5, cache.get(1)); // returns 5

cache.put(3, 6); // evicts key 2

Assertions.assertThrows(NoSuchElementException.class, () -> cache.get(7));// throws exception

Assertions.assertEquals(6, cache.get(3)); // returns 6.

cache.put(4, 8); // evicts key 1.

Assertions.assertThrows(NoSuchElementException.class, () -> cache.get(1));// throws exception

Assertions.assertEquals(6, cache.get(3)); // returns 6

Assertions.assertEquals(8, cache.get(4)); // returns 8

}