@Test
public void testGetBearerTokenAuthorizationHeaderInvalidSchemePrefix() {

    when(authContextInfo.getTokenHeader()).thenReturn(AUTHORIZATION);
    when(authContextInfo.getTokenSchemes()).thenReturn(BEARER_SCHEME);
    AbstractBearerTokenExtractor target = newTarget(h -> "BEARER", c -> null);
    String bearerToken = target.getBearerToken();
    assertNull(bearerToken);
}