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Testing StatMapper Database Operations in litemall

This test suite validates the StatMapper functionality in the litemall database layer, focusing on statistical data retrieval for users, orders, and goods. The tests verify the correct mapping and data extraction from the database using Spring Boot and JUnit framework.

Test Coverage Overview

The test suite provides comprehensive coverage of the StatMapper’s core statistical functions:

User statistics retrieval and mapping verification
Order data collection and processing validation
Goods statistical information extraction

Each test method validates the successful retrieval of data collections and proper key-value mapping functionality.

Implementation Analysis

The implementation utilizes Spring Boot’s testing framework with JUnit integration. The testing approach employs autowired dependency injection for the StatMapper component and uses Map collections to handle dynamic statistical data. The tests demonstrate Spring’s WebAppConfiguration and SpringRunner for proper context loading.

Each test method follows a consistent pattern of data retrieval and verification through iteration and console output.

Technical Details

Testing tools and configuration:

JUnit 4 testing framework
Spring Boot Test context
SpringRunner for test execution
WebAppConfiguration for web context simulation
Autowired dependency injection for StatMapper
Map interface for flexible data structure handling

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Clear separation of test cases for different statistical functions
Consistent test method naming convention
Proper Spring Boot test configuration setup
Effective use of dependency injection
Modular test structure for maintainability

linlinjava/litemall

litemall-db/src/test/java/org/linlinjava/litemall/db/StatMapperTest.java

            
package org.linlinjava.litemall.db;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.linlinjava.litemall.db.dao.StatMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.context.web.WebAppConfiguration;

import java.util.List;
import java.util.Map;

@WebAppConfiguration
@RunWith(SpringRunner.class)
@SpringBootTest
public class StatMapperTest {

    @Autowired
    private StatMapper statMapper;

    @Test
    public void testUser() {
        List<Map> result = statMapper.statUser();
        for (Map m : result) {
            m.forEach((k, v) -> System.out.println("key:value = " + k + ":" + v));
        }
    }

    @Test
    public void testOrder() {
        List<Map> result = statMapper.statOrder();
        for (Map m : result) {
            m.forEach((k, v) -> System.out.println("key:value = " + k + ":" + v));
        }
    }

    @Test
    public void testGoods() {
        List<Map> result = statMapper.statGoods();
        for (Map m : result) {
            m.forEach((k, v) -> System.out.println("key:value = " + k + ":" + v));
        }
    }

}