content: /*
   * Copyright 2024-2025 the original author or authors.
   *
   * 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
   *
   *      https://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.cloud.ai.studio.core.rag.splitter;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  import org.springframework.ai.document.Document;
  import org.springframework.ai.transformer.splitter.TextSplitter;
  
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.*;
  import static org.mockito.Mockito.*;
  
  class TextSplitterTest {
  
  	@Mock
  	private TextSplitter textSplitter;
  
  	@BeforeEach
  	void setUp() {
  		MockitoAnnotations.openMocks(this);
  	}
  
  	@Test
  	void testSplit() {
  		// Prepare test data
  		String text = "This is a test text";
  		List<Document> expectedChunks = List.of();
  		Document document = Document.builder().text(text).build();
  
  		// Mock behavior
  		when(textSplitter.split(document)).thenReturn(expectedChunks);
  
  		// Execute
  		List<Document> result = textSplitter.split(document);
  
  		// Verify
  		assertNotNull(result);
  		assertEquals(expectedChunks, result);
  		verify(textSplitter, times(1)).split(document);
  	}
  
  	@Test
  	void testSplitWithEmptyInput() {
  		// Prepare test data
  		String emptyText = "";
  		Document document = Document.builder().text(emptyText).build();
  
  		// Execute
  		List<Document> result = textSplitter.split(document);
  
  		// Verify
  		assertNotNull(result);
  		assertTrue(result.isEmpty());
  	}
  
  }
  