初始化

src/test/java/com/nkkj/ups/UpsApplicationTests.java

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+package com.nkkj.ups;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class UpsApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}

src/test/java/com/nkkj/ups/test/SampleTest.java

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+//package com.nkkj.ups.test;
+//
+//import com.baomidou.mybatisplus.core.toolkit.Assert;
+//import org.junit.jupiter.api.Test;
+//import org.junit.runner.RunWith;
+//import org.springframework.beans.factory.annotation.Autowired;
+//import org.springframework.boot.test.context.SpringBootTest;
+//import org.springframework.test.context.junit4.SpringRunner;
+//
+//import java.util.List;
+//@RunWith(SpringRunner.class)
+//@SpringBootTest
+//public class SampleTest {
+//
+//    @Autowired
+//    private UserMapper userMapper;
+//
+//    @Test
+//    public void testSelect() {
+//        System.out.println(("----- selectAll method test ------"));
+//        List<User> userList = userMapper.selectList(null);
+//        Assert.isTrue(5 == userList.size(), "太短");
+//        userList.forEach(System.out::println);
+//    }
+//
+//}