public void test_putAndGet() {
        dataStoreParams.put("key1", "value1");
        assertEquals("value1", dataStoreParams.get("key1"));

        dataStoreParams.put("key2", 123);
        assertEquals(123, dataStoreParams.get("key2"));

        dataStoreParams.put("key3", null);
        assertNull(dataStoreParams.get("key3"));
    }

    // Test get for non-existent key
    @Test
    public void test_getNonExistentKey() {

        doc.put("key4", expected4);
        assertEquals(expected4, DocumentUtil.getValue(doc, "key4", Date.class));
    }

    @Test
    public void test_long() {
        Map<String, Object> doc = new HashMap<>();

        long expected5 = 999999999999999999L;
        doc.put("key5", expected5);
        assertEquals(expected5, DocumentUtil.getValue(doc, "key5", Long.class).longValue());
    }

    @Test

        // Test with whitespace around keys and values
        value = "  key1  =  value1  \n  key2=value2\n";
        paramMap = ParameterUtil.parse(value);
        assertEquals(2, paramMap.size());
        assertEquals("value1", paramMap.get("key1"));
        assertEquals("value2", paramMap.get("key2"));

        // Test with empty lines and mixed whitespace
        value = "key1=value1\n\n\t\nkey2=value2\n \n";

        assertEquals(100, builder.initialSettings.get("key2"));
        assertEquals(true, builder.initialSettings.get("key3"));

        // Test overwriting existing setting
        builder.addInitialSettings("key1", "newValue1");
        assertEquals(3, builder.initialSettings.size());
        assertEquals("newValue1", builder.initialSettings.get("key1"));
    }

    @Test

        pw.println("");
        pw.println("# A value comment");
        pw.println("key1 = val1");
        pw.println("");
        pw.println("# Another value comment");
        pw.println("key2 = ${key1}/foo");
        pw.println("");
        pw.println("# A third comment");
        pw.println("key3 = val3");
        pw.println("");

        MavenProperties props = new MavenProperties();

        StringBuilder buf = new StringBuilder();

        monitorTarget.append(buf, "key1", () -> "value1");
        buf.append(",");
        monitorTarget.append(buf, "key2", () -> 123);
        buf.append(",");
        monitorTarget.append(buf, "key3", () -> null);

        assertEquals("\"key1\":\"value1\",\"key2\":123,\"key3\":null", buf.toString());
    }

    // Test append with empty string
    @Test

    public void testGenerateRandomKey() {
        byte[] key1 = keyManager.generateRandomKey(32);
        byte[] key2 = keyManager.generateRandomKey(32);

        assertNotNull(key1, "Should generate key 1");
        assertNotNull(key2, "Should generate key 2");
        assertEquals(32, key1.length, "Key 1 should have correct length");
        assertEquals(32, key2.length, "Key 2 should have correct length");

      while (same != 0xffffffff || diff != 0xffffffff) {
        int key1 = rand.nextInt();
        // flip input bit for key2
        int key2 = key1 ^ (1 << i);
        // get hashes
        int hash1 = function.hashInt(key1).asInt();
        int hash2 = function.hashInt(key2).asInt();
        // test whether the hash values have same output bits
        same |= ~(hash1 ^ hash2);

        String[] keys = entrySet.stream().map(Map.Entry::getKey).toArray(String[]::new);

        assertTrue("Should contain all keys", Arrays.asList(keys).contains("lang"));
        assertTrue("Should contain all keys", Arrays.asList(keys).contains("a_key"));
        assertTrue("Should contain all keys", Arrays.asList(keys).contains("b_key"));
        assertTrue("Should contain all keys", Arrays.asList(keys).contains("c_key"));

	lru := lru.NewLRU[string, int](2, nil, time.Hour)
	lru.Add("key1", 1)
	lru.Add("key2", 2)
	lru.Add("key3", 3)

	if _, ok := lru.Get("key1"); ok {
		t.Errorf("Expected key1 to be removed, but it still exists")
	}
}

func TestLRU_Add_UnlimitedSize_NoEviction(t *testing.T) {
	lru := lru.NewLRU[string, int](0, nil, time.Hour)
	lru.Add("key1", 1)
	lru.Add("key2", 2)
	lru.Add("key3", 3)

	if _, ok := lru.Get("key1"); !ok {