@Test
public void loadProperties() throws IOException {

    when(assetManager.open(anyString())).thenReturn(getClass().getClassLoader().getResourceAsStream(ConfigurationProperties.PROPERTIES_FILE_NAME));
    ConfigurationProperties configurationProperties = new ConfigurationProperties(assetManager);
    assertEquals("https://id.eesti.ee/", configurationProperties.getCentralConfigurationServiceUrl());
    assertSame(7, configurationProperties.getConfigurationUpdateInterval());
}