assertNotNull(result);
        assertTrue(result.isPresent());
        assertEquals(Integer.valueOf(42), result.get());
    }

    @Test
    public void test_ofNullable_withNullInteger() {
        Integer testValue = null;
        OptionalEntity<Integer> result = OptionalUtil.ofNullable(testValue);

        assertNotNull(result);
        assertFalse(result.isPresent());

        String longString1 = "a".repeat(1000);
        String longString2 = "b".repeat(1000);
        String result = StringUtil.join(",", longString1, longString2);
        assertEquals(2001, result.length()); // 1000 + 1 + 1000
        assertTrue(result.startsWith("aaa"));
        assertTrue(result.endsWith("bbb"));
        assertTrue(result.contains(","));
    }

    @Test
    @DisplayName("Should handle long delimiter")

        assertTrue("Result should contain password={cipher}, but was: " + result, result.contains("password={cipher}"));

        // Test with empty encryption target
        value = "password=";
        result = ParameterUtil.encrypt(value);
        assertTrue(result.contains("password={cipher}"));

        // Test with only whitespace value

        RelevanceEvaluationResult result = RelevanceEvaluationResult.withRelevantDocs(docIds, indexes);

        assertTrue(result.isHasRelevantResults());
        assertEquals(1, result.getRelevantDocIds().size());
        assertEquals("doc1", result.getRelevantDocIds().get(0));
        assertEquals(1, result.getRelevantIndexes().size());
        assertEquals(Integer.valueOf(1), result.getRelevantIndexes().get(0));
    }

    @Test

        String result = notificationHelper.toSlackMessage(discloser);

        assertNotNull(result);
        assertTrue(result.contains("Test"));
        assertTrue(result.contains("Subject"));
        assertTrue(result.contains("quotes"));
        assertTrue(result.contains("content"));
        assertTrue(result.contains("newlines"));
        assertTrue(result.contains("tabs"));

        assertNotNull(result.getFailures());
        assertEquals(2, result.getFailures().size());
        assertEquals(exception1, result.getFailures().get(0));
        assertEquals(exception2, result.getFailures().get(1));
    }

    @Test
    public void test_noFailures() throws Exception {
        SuggestWriterResult result = new SuggestWriterResult();

        assertFalse(result.hasFailure());

        };

        String[] result = JvmUtil.filterJvmOptions(args);
        assertEquals(5, result.length);
        assertEquals("-server", result[0]);
        assertEquals("-Xms1g", result[1]);
        assertEquals("-Xmx4g", result[2]);
        assertEquals("invalid:pattern", result[3]);
        assertEquals("-XX:+UnlockExperimentalVMOptions", result[4]);
    }

    @Test

        setupVirtualHostHelper();

        Boolean result = invokeIsValidVirtualHostPath("");
        assertTrue("Empty path should be valid (default host)", result);
    }

    @Test
    public void test_isValidVirtualHostPath_nullPath() throws Exception {
        setupVirtualHostHelper();

        Boolean result = invokeIsValidVirtualHostPath(null);

        QueryContext context = new QueryContext("test", false);
        QueryBuilder result = booleanQueryCommand.execute(context, booleanQuery, 1.0f);

        assertNotNull(result);
        assertTrue(result instanceof BoolQueryBuilder);

        BoolQueryBuilder boolResult = (BoolQueryBuilder) result;
        assertTrue(boolResult.hasClauses());
    }

    }

    @Override
    protected <RESULT extends FileConfig> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setAvailable(DfTypeUtil.toBoolean(source.get("available")));
            result.setBoost(DfTypeUtil.toFloat(source.get("boost")));