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Testing Instance Configuration Repository Pagination in Apollo

This test suite validates the pagination functionality of the InstanceConfigRepository in Apollo’s configuration management system. It focuses on testing the retrieval and storage of instance configurations with proper pagination implementation.

Test Coverage Overview

The test suite provides comprehensive coverage of pagination functionality in the InstanceConfigRepository.

Key areas tested include:

Creation of multiple instance configurations
Pagination with different page sizes and offsets
Verification of result set sizes across multiple pages
Instance and configuration relationship mapping

Implementation Analysis

The testing approach utilizes JUnit with Spring’s integration testing framework to validate repository operations.

Notable patterns include:

Use of @Rollback for transaction management
Spring’s PageRequest implementation for pagination
Integration with multiple repository layers
Date-based filtering for configuration retrieval

Technical Details

Testing infrastructure includes:

Spring Data JPA for repository operations
JUnit test framework
Hamcrest matchers for assertions
AbstractIntegrationTest base class for common setup
Autowired repository dependencies

Best Practices Demonstrated

The test implementation showcases several testing best practices:

Clear test method naming conventions
Proper test data setup and cleanup
Explicit verification of page sizes
Systematic testing of multiple page scenarios
Use of transaction management for test isolation

apolloconfig/apollo

apollo-biz/src/test/java/com/ctrip/framework/apollo/biz/repository/InstanceConfigRepositoryTest.java

            
/*
 * Copyright 2024 Apollo 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
 *
 * 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.ctrip.framework.apollo.biz.repository;

import com.ctrip.framework.apollo.biz.AbstractIntegrationTest;
import com.ctrip.framework.apollo.biz.entity.Instance;
import com.ctrip.framework.apollo.biz.entity.InstanceConfig;
import java.util.Date;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.test.annotation.Rollback;

import static org.hamcrest.Matchers.hasSize;
import static org.hamcrest.MatcherAssert.assertThat;

/**
 * Created by kezhenxu94 at 2019/1/18 15:33.
 *
 * @author kezhenxu94 (kezhenxu94 at 163 dot com)
 */
public class InstanceConfigRepositoryTest extends AbstractIntegrationTest {
  @Autowired
  private InstanceConfigRepository instanceConfigRepository;
  @Autowired
  private InstanceRepository instanceRepository;

  @Rollback
  @Test
  public void shouldPaginated() {
    for (int i = 0; i < 25; i++) {
      Instance instance = new Instance();
      instance.setAppId("appId");
      instanceRepository.save(instance);

      final InstanceConfig instanceConfig = new InstanceConfig();
      instanceConfig.setConfigAppId("appId");
      instanceConfig.setInstanceId(instance.getId());
      instanceConfig.setConfigClusterName("cluster");
      instanceConfig.setConfigNamespaceName("namespace");
      instanceConfigRepository.save(instanceConfig);
    }
    Page<Object> ids = instanceConfigRepository.findInstanceIdsByNamespaceAndInstanceAppId(
        "appId", "appId", "cluster", "namespace", new Date(0), PageRequest.of(0, 10)
    );
    assertThat(ids.getContent(), hasSize(10));

    ids = instanceConfigRepository.findInstanceIdsByNamespaceAndInstanceAppId(
        "appId", "appId", "cluster", "namespace", new Date(0), PageRequest.of(1, 10)
    );
    assertThat(ids.getContent(), hasSize(10));

    ids = instanceConfigRepository.findInstanceIdsByNamespaceAndInstanceAppId(
        "appId", "appId", "cluster", "namespace", new Date(0), PageRequest.of(2, 10)
    );
    assertThat(ids.getContent(), hasSize(5));
  }
}