content: /**
   * Copyright (C) 2024 AIDC-AI
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.langengine.core.util;
  
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  import java.util.Arrays;
  import java.util.List;
  
  
  public class LLMUtilsTest {
  
      @Test
      public void testEnforceStopTokens() {
          // success
          String realAnswer = "Answer is here. ";
          List<String> stops = Arrays.asList("Human:", "AI:", "\nObservation:");
          {
              String responseContent = realAnswer;
              responseContent = LLMUtils.enforceStopTokens(responseContent, stops);
              Assertions.assertEquals(realAnswer, responseContent);
          }
          {
              String responseContent = realAnswer + "Human: I am human. " + "AI: I am AI. " + "\nObservation: I am observation.";
              responseContent = LLMUtils.enforceStopTokens(responseContent, stops);
              Assertions.assertEquals(realAnswer, responseContent);
          }
          {
              String responseContent = realAnswer + "AI: I am AI. " + "Human: I am human. " + "\nObservation: I am observation.";
              responseContent = LLMUtils.enforceStopTokens(responseContent, stops);
              Assertions.assertEquals(realAnswer, responseContent);
          }
          {
              String responseContent = realAnswer + "\nObservation: I am observation." + "AI: I am AI. " + "Human: I am human. ";
              responseContent = responseContent.split(String.join("|", stops), 2)[0];
              Assertions.assertEquals(realAnswer, responseContent);
          }
      }
  }
  