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"));
    }

    public void test_entrySet_with_only_lang_key() {

        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"));
        // JSON should be properly escaped
        assertTrue(result.contains("Test"));
    }

    }

    /**
     * Test contains method with null list
     */
    @Test
    @DisplayName("Contains should return false for null list")
    void testContainsNullList() {
        assertFalse(AvPairs.contains(null, AvPair.MsvAvFlags), "Should return false for null list");
    }

    /**
     * Test contains method with empty list
     */
    @Test

        confPath = ResourceUtil.getConfPath("dir1", "dir2", "file.conf");
        assertNotNull(confPath);
        assertTrue(confPath.toString().contains("dir1"));
        assertTrue(confPath.toString().contains("dir2"));
        assertTrue(confPath.toString().contains("file.conf"));
    }

    public void test_getConfOrClassesPath() {
        // Test behavior when resource is not found
        try {

            assertNotNull(result);
            assertTrue(result.contains("TransportException"));
            assertTrue(result.contains(message));
            assertTrue(result.contains("\n"));
            assertTrue(result.contains("IllegalArgumentException"));
            assertTrue(result.contains(rootMessage));
            assertTrue(result.contains("at ")); // Stack trace indicator
        }

        @Test

        String output1 = thread.getOutput();
        boolean contains1 = thread.contains("concurrent1");

        thread.join(1000);

        String output2 = thread.getOutput();
        boolean contains2 = thread.contains("concurrent1");

        assertNotNull(output1);
        assertNotNull(output2);
        assertTrue(contains2);
    }

        } catch (SMBProtocolDecodingException e) {
            // If exception thrown, validation is working
            assertTrue(e.getMessage().contains("Invalid negotiate context data length") || e.getMessage().contains("Buffer too small")
                    || e.getMessage().contains("negotiate context"), "Validation detected issue: " + e.getMessage());
        }
    }

    /**

        // Then
        assertTrue(exception.getMessage().toLowerCase().contains("sharing") || exception.getMessage().toLowerCase().contains("violation")
                || exception.getMessage().toLowerCase().contains("used") || exception.getMessage().toLowerCase().contains("being used")
                || exception.getMessage().toLowerCase().contains("process"));
    }

    @Test
    @DisplayName("Should handle DOS error codes")

        assertTrue(str.contains("count="), "Should contain count");
        assertTrue(str.contains("offset="), "Should contain offset");
    }

    public int size() {
        return map.size();
    }

    /**
     * Returns true if this set contains no elements.
     *
     * @return true if this set contains no elements.
     */
    @Override
    public boolean isEmpty() {
        return map.isEmpty();
    }

    /**
     * Returns true if this set contains the specified element.
     *
     * @param o