spring boot unit test

JUnit 5
java1.8
spring boot2

spring-boot-starter-test
h2database:
The H2 DB is our in-memory database. It eliminates the need for configuring and starting an actual database for test purposes.

// https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test
testCompile group: 'org.springframework.boot', name: 'spring-boot-starter-test', version: '2.1.2.RELEASE'
// https://mvnrepository.com/artifact/com.h2database/h2
testCompile group: 'com.h2database', name: 'h2', version: '1.4.197'

junit5 config

testImplementation 'org.junit.jupiter:junit-jupiter-api:5.3.2'
testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.3.2'

如果引用的包是 jupiter 说明是使用的 junit5 了

import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

在测试类上面标注，指定测试的控制器包

@WebMvcTest(controllerUser.class)
class controllerUserTest {...}

Junit常用注解：
@Before：初始化方法
@After：释放资源
@Test：测试方法，在这里可以测试期望异常和超时时间
@Ignore：忽略的测试方法
@BeforeClass：针对所有测试，只执行一次，且必须为static void
@AfterClass：针对所有测试，只执行一次，且必须为static void
@RunWith：指定使用的单元测试执行类

verify(mock, times(5)).someMethod("was called five times");
verify(mock, never()).someMethod("was never called");
verify(mock, atLeastOnce()).someMethod("was called at least once");
verify(mock, atLeast(2)).someMethod("was called at least twice");
verify(mock, atMost(3)).someMethod("was called at most 3 times");
verify(mock, atLeast(0)).someMethod("was called any number of times"); // useful with captors
verify(mock, only()).someMethod("no other method has been called on the mock");