### Question:
BasicAuthenticationHandler implements ClientAuthenticationHandler { public String geClientAuthenticationType() { return OAuth2Message.BASIC_AUTH_TYPE; }  OAuth2HandlerError addOAuth2Authentication(final HttpRequest request,
          final OAuth2Accessor accessor); String geClientAuthenticationType();  }### Answer:
@Test public void testBasicAuthenticationHandler1() throws Exception { final BasicAuthenticationHandler result = new BasicAuthenticationHandler(); Assert.assertNotNull(result); Assert.assertTrue(ClientAuthenticationHandler.class.isInstance(result)); Assert.assertEquals(OAuth2Message.BASIC_AUTH_TYPE, result.geClientAuthenticationType()); }
@Test public void testGeClientAuthenticationType1() throws Exception { final BasicAuthenticationHandler fixture = new BasicAuthenticationHandler(); final String result = fixture.geClientAuthenticationType(); Assert.assertEquals(OAuth2Message.BASIC_AUTH_TYPE, result); }