Spring结合junit进行单元测试

Spring结合junit进行单元测试

在进行单元的测试的时候比较头疼的就是，如果使用了spring，那么需要手动的进行对类进行初始化，比如最常见的service和service的实现类serviceimpl。现在就介绍一个不是很新的测试方法。
采用junit进行单元测试。下面是一些要点：
1、采用的spring的jar包和spring-test的jar包是同样版本的。

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>

2、在写Junit单元测试的时候需要加入注解告知spirng的配置文件位置。

package test;

import com.xueyou.ssm.service.FirstService;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import static org.mockito.Mockito.*;

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

/**
* Created by wuxueyou on 16/10/25.
*/
@RunWith(value = SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"file:src/main/webapp/WEB-INF/spring-mvc/springmvc-servlet.xml",
"file:src/main/webapp/WEB-INF/spring-mvc/datasource.xml"})
public class MockitohelloTest {

public List<String> mockannotationList;
@Test
public void simpleTest(){
List<String> mockList = mock(List.class);
mockList.add("one");
mockList.add("one");
mockList.add("one");
mockList.clear();

verify(mockList).clear();
verify(mockList, atLeast(3)).add("one");
}

@Autowired
FirstService firstService;

@Test
public void FirstModelTest(){
Map<String,Object> params = new HashMap<>();
Map<String,Object> resMap = firstService.getJson(params);
for (String s : resMap.keySet()) {
System.out.println(resMap.get(s));
}
Assert.assertEquals(1, resMap.size());

}

}

测试结果：

[{PASSWORD=1, LOGINID=a, ID=1083caa8-9143-11e6-945d-708e78b00b24, CREATETIME=2016-10-24 20:39:56.0, BIRTHDAY=2016-10-15 17:48:59.0, NAME=aa, AGE=12}]
1
成功

java.lang.AssertionError:
Expected :1
Actual   :3
<Click to see difference>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:645)
at org.junit.Assert.assertEquals(Assert.java:631)
at test.MockitohelloTest.FirstModelTest(MockitohelloTest.java:48)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:85)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:86)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:241)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:87)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)

Process finished with exit code 255

最后，如果测试的是更新或者插入操作，那么可以在测试上增加一个回滚的注解。
@Rollback(true)