content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
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  package com.datastax.oss.driver.api.core.paging;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.assertj.core.api.Assertions.fail;
  
  import com.datastax.oss.driver.api.core.PagingIterable;
  import com.datastax.oss.driver.internal.core.MockAsyncPagingIterable;
  import com.datastax.oss.driver.internal.core.MockPagingIterable;
  import com.datastax.oss.driver.shaded.guava.common.base.Splitter;
  import java.util.List;
  
  public class OffsetPagerTestFixture {
  
    private static final Splitter SPEC_SPLITTER = Splitter.on('|').trimResults();
    private static final Splitter LIST_SPLITTER = Splitter.on(',').trimResults().omitEmptyStrings();
  
    private final List<String> inputElements;
    private final int requestedPage;
    private final int pageSize;
    private final int expectedPageNumber;
    private final List<String> expectedElements;
    private final boolean expectedIsLast;
  
    public OffsetPagerTestFixture(String spec) {
      List<String> components = SPEC_SPLITTER.splitToList(spec);
      int size = components.size();
      if (size != 3 && size != 6) {
        fail("Invalid fixture spec, expected 3 or 5 components");
      }
  
      this.inputElements = LIST_SPLITTER.splitToList(components.get(0));
      this.requestedPage = Integer.parseInt(components.get(1));
      this.pageSize = Integer.parseInt(components.get(2));
      if (size == 3) {
        this.expectedPageNumber = -1;
        this.expectedElements = null;
        this.expectedIsLast = false;
      } else {
        this.expectedPageNumber = Integer.parseInt(components.get(3));
        this.expectedElements = LIST_SPLITTER.splitToList(components.get(4));
        this.expectedIsLast = Boolean.parseBoolean(components.get(5));
      }
    }
  
    public PagingIterable<String> getSyncIterable() {
      return new MockPagingIterable<>(inputElements.iterator());
    }
  
    public MockAsyncPagingIterable<String> getAsyncIterable(int fetchSize) {
      return new MockAsyncPagingIterable<>(inputElements, fetchSize, false);
    }
  
    public int getRequestedPage() {
      return requestedPage;
    }
  
    public int getPageSize() {
      return pageSize;
    }
  
    public void assertMatches(OffsetPager.Page<String> actualPage) {
      assertThat(actualPage.getPageNumber()).isEqualTo(expectedPageNumber);
      assertThat(actualPage.getElements()).isEqualTo(expectedElements);
      assertThat(actualPage.isLast()).isEqualTo(expectedIsLast);
    }
  }
  