@Test
public void testIsAliasString() {

  String test = "cassablanca";
  Assert.assertFalse(CredentialProvider.isAliasString(test));
  test = "${}";
  Assert.assertFalse(CredentialProvider.isAliasString(test));
  test = "{}";
  Assert.assertFalse(CredentialProvider.isAliasString(test));
  test = "{cassablanca}";
  Assert.assertFalse(CredentialProvider.isAliasString(test));
  test = "${cassablanca}";
  Assert.assertFalse(CredentialProvider.isAliasString(test));
  test = "${alias=cassablanca}";
  Assert.assertTrue(CredentialProvider.isAliasString(test));
}