public static Map<String, String> loadProperties(final File propertiesFile) {
    return loadProperties(ImmutableList.of(propertiesFile));
  }
@Test
  public void shouldThrowIfFailedToLoadProps() {
    // Given:
    propsFile = new File("i_do_not_exist");

    // When
    final KsqlException e = assertThrows(
        KsqlException.class,
        () -> PropertiesUtil.loadProperties(propsFile)
    );

    // Then:
    assertThat(e.getMessage(), containsString("Failed to load properties file: i_do_not_exist"));
  }