AssertJ断言系列-----------<数据库断言二>

那么，在实际的接口测试中，我们除了要断言响应的数据正确之外，可能有的还需要断言数据层是否数据真的有入库。

assertj db是可以直接对数据库进行断言和操作的。

一、创建一个students表

CREATE TABLE `students` (
      `id` VARCHAR(32) DEFAULT NULL,
      `Name` VARCHAR(32) DEFAULT NULL,
      `Sex` VARCHAR(32) DEFAULT NULL,
      `Age` VARCHAR(32) DEFAULT NULL
      ) ENGINE=INNODB DEFAULT CHARSET=utf8

二、插入三条数据

insert into `students` (`id`, `Name`, `Sex`, `Age`) values('1','hello','1','11');
insert into `students` (`id`, `Name`, `Sex`, `Age`) values('2','world','2','22');
insert into `students` (`id`, `Name`, `Sex`, `Age`) values('3','java','3','33');

三、编辑代码

package org.assertj.examples.db;

import org.assertj.db.type.Request;
import org.assertj.db.type.Source;
import org.junit.BeforeClass;
import org.junit.Test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.List;
import static org.assertj.db.api.Assertions.assertThat;

/**
 * @ClassName DataAssertionExample
 * @Description TODO
 * @Author 12457
 * @Date 2019/1/27 10:43
 * @Version 1.0
 **/

public class DataAssertionExample {

   private static String driver = "com.mysql.jdbc.Driver";
   private static String url = "jdbc:mysql://localhost:3306/course";
   private static String username = "****"; //实际用户名
   private static String password = "****"; //实际密码
   private static Connection conn = null;

   /*
    *数据库配置连接
    **/
   @BeforeClass
   public static void beforeClass(){
      try {
         Class.forName(driver);
         conn = (Connection) DriverManager.getConnection(url,username,password);
      } catch (ClassNotFoundException e) {
         e.printStackTrace();
      } catch (SQLException e) {
         e.printStackTrace();
      }

   }

   @Test
   public void basic_request_assertion_examples(){
      Source source = new Source(url,username,password);
      Request request = new Request(source,"SELECT * FROM students");
      //获取该表的字段名
      List<String> list = request.getColumnsNameList();
      for (String s : list) {
         System.out.print(s + "\t");
      }
      //断言name这一列数据
      assertThat(request).column("name")
      .value().isEqualTo("hello")
      .value().isEqualTo("world")
      .value().isEqualTo("java");

      //断言数据库表中的数据条数
      assertThat(request).hasNumberOfRows(3);

      //断言第一行的数据的值,row(0)代表第一行数据
      assertThat(request).row(0)
            .value().isEqualTo("1")
            .value().isEqualTo("hello")
            .value().isEqualTo("1")
            .value().isEqualTo("11");
   }

   @Test
   public void basic_column_request_assertion_examples(){
      Source source = new Source(url,username,password);
      Request request = new Request(source,"SELECT * FROM students");

      //断言sex列中数据
      assertThat(request).column("sex")
            .hasValues("1","2","3");
   }

   @Test
   public void basic_row_request_assertion_examples(){
      Source source = new Source(url,username,password);
      Request request = new Request(source,"SELECT * FROM students");
      assertThat(request).row(1)
            .hasValues("2","world","2","22");
   }

   @Test
   public void size_request_assertion_examples(){
      Source source = new Source(url,username,password);
      Request request = new Request(source,"SELECT * FROM students");

      //表有4列3行数据
      assertThat(request).hasNumberOfColumns(4);
      assertThat(request).hasNumberOfRows(3);

      //另外相等的一种写法
      assertThat(request).column().hasNumberOfRows(3);
      assertThat(request).row().hasNumberOfColumns(4);
   }

   @Test
   public void request_parameters_examples(){
      Source source = new Source(url,username,password);
      Request request = new Request(source,"SELECT name,sex FROM students where name like ?","%o%");

      //查询出来有2条数据符号，然后对values值进行判断
      assertThat(request).hasNumberOfColumns(2).hasNumberOfRows(2);
      assertThat(request)
            .row().hasNumberOfColumns(2).hasValues("hello","1")
            .row().hasValues("world","2");
   }
}