assertNodeNotInGraphErrorMessage(
        assertThrows(IllegalArgumentException.class, () -> graph.adjacentNodes(N1)));
    assertNodeNotInGraphErrorMessage(
        assertThrows(IllegalArgumentException.class, () -> graph.predecessors(N1)));
    assertNodeNotInGraphErrorMessage(
        assertThrows(IllegalArgumentException.class, () -> graph.successors(N1)));
    assertNodeNotInGraphErrorMessage(

        void testConstructorWithStringInvalidCharacter() {
            // Arrange
            String invalidUuid = "00112233-4455-6677-8899-AABBCCDDEXX"; // 'X' is invalid

            // Act & Assert
            assertThrows(IllegalArgumentException.class, () -> new UUID(invalidUuid),
                    "Should throw IllegalArgumentException for invalid character in UUID string");

      """.trimMargin()
    try {
      decode(certificatePem)
      fail<Any>()
    } catch (expected: IllegalArgumentException) {
      assertThat(expected.message).isEqualTo("string does not include a private key")
    }
    try {
      decode(pkcs8Pem)
      fail<Any>()
    } catch (expected: IllegalArgumentException) {
      assertThat(expected.message).isEqualTo("string does not include a certificate")
    }
    try {

        assertThrows(IllegalArgumentException.class, () -> InputValidator.validateArrayBounds(null, 0, dst, 0, 10));
        assertThrows(IllegalArgumentException.class, () -> InputValidator.validateArrayBounds(src, 0, null, 0, 10));
        assertThrows(IllegalArgumentException.class, () -> InputValidator.validateArrayBounds(src, -1, dst, 0, 10));

        }

        @Test
        @DisplayName("Should create exception with root cause")
        void testConstructorWithRootCause() {
            Exception rootCause = new IllegalArgumentException("Root cause exception");
            TransportException exception = new TransportException(rootCause);

            assertNotNull(exception);
            assertNull(exception.getMessage());

    }

    @Test
    void testMapInformationLevelWithInvalidLevel() {
        // Test invalid information level
        IllegalArgumentException exception =
                assertThrows(IllegalArgumentException.class, () -> Trans2QueryPathInformation.mapInformationLevel(999));
        assertTrue(exception.getMessage().contains("Unsupported information level"));
    }

    @Test

    }

    @Test
    public void testMemoryBasedCacheConstructorWithNull() {
        try {
            new ContentCache((byte[]) null);
            fail("Expected IllegalArgumentException");
        } catch (IllegalArgumentException e) {
            assertTrue(e.getMessage().contains("data must not be null"));
        }
    }

    @Test
    public void testMemoryBasedCacheDefensiveCopy() throws IOException {

  public void testCheckArgument_nullMessage_failure() {
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> checkArgument(false, null));
    assertThat(expected).hasMessageThat().isEqualTo("null");
  }

  public void testCheckArgument_nullMessageWithArgs_failure() {
    IllegalArgumentException e =
        assertThrows(IllegalArgumentException.class, () -> checkArgument(false, null, "b", "d"));

    graph.putEdgeValue(1, 2, "A");
    IllegalArgumentException e =
        assertThrows(
            IllegalArgumentException.class, () -> graph.edgeValue(EndpointPair.unordered(1, 2)));
    assertThat(e).hasMessageThat().contains(ENDPOINTS_MISMATCH);
    e =
        assertThrows(
            IllegalArgumentException.class, () -> graph.edgeValue(EndpointPair.unordered(2, 1)));

    addEdge(N1, N2, E12);
    IllegalArgumentException e =
        assertThrows(
            IllegalArgumentException.class,
            () -> networkAsMutableNetwork.addEdge(N1, N2, EDGE_NOT_IN_GRAPH));
    assertThat(e).hasMessageThat().contains(ERROR_PARALLEL_EDGE);
    e =
        assertThrows(
            IllegalArgumentException.class,