Cover SecurityCheckProvider.SecurityCheckInjectable.cookieLogin with tests

src/main/java/com/commafeed/backend/service/UserService.java

@@ -54,7 +54,7 @@ public class UserService {
 			boolean authenticated = encryptionService.authenticate(password, user.getPassword(), user.getSalt());
 			if (authenticated) {
 				afterLogin(user);
-				return Optional.fromNullable(user);
+				return Optional.of(user);
 			}
 		}
 		return Optional.absent();

src/main/java/com/commafeed/frontend/auth/SecurityCheckProvider.java

@@ -35,7 +35,7 @@ public class SecurityCheckProvider implements InjectableProvider<SecurityCheck,
 	}
 
 	@RequiredArgsConstructor
-	private static class SecurityCheckInjectable<T> extends AbstractHttpContextInjectable<User> {
+	static class SecurityCheckInjectable<T> extends AbstractHttpContextInjectable<User> {
 		private static final String PREFIX = "Basic";
 
 		private final HttpServletRequest request;
@@ -66,7 +66,7 @@ public class SecurityCheckProvider implements InjectableProvider<SecurityCheck,
 			}
 		}
 
-		private Optional<User> cookieSessionLogin() {
+		Optional<User> cookieSessionLogin() {
 			return userService.login(request.getSession(false));
 		}