Java单元测试
[英]java Unit testing
问题描述
我有一个akka maven项目，我想对其进行单元测试。
我定义了测试类，但是当我运行它，我都显示错误。
演员类代码片段如下：
public class WorkerActor extends UntypedActor {
@Override
public void onReceive(Object msg) throws Exception {
if(msg instanceof GesturePoints)
{ GesturePoints message = (GesturePoints) msg;
Result rslt = initial_Theta(message);
getSender().tell(rslt);
}
else {unhandled(msg);}
}
public Result initial_Theta(GesturePoints p)
{
Result result = new Result();
if(p.getPoints().get("x").size() < 3) //The number of x coordinates as size
{ return null;}
dx = (double) ((Integer)p.getPoints().get("x").get(2) - (Integer)p.getPoints().get("x").get(0)) ;
dy = ((Double)p.getPoints().get("y").get(2)) - ((Double)p.getPoints().get("y").get(0));
{
result.setResult("feature1", initial_cos);
result.setResult("feature2", initial_sin);
}
return result;
}
}
测试类在下面的代码中给出
public class ActorTest {
TestKit testKit;
TestActorRef<WorkerActor> testedActor ;
TestProbe tProbe;
@Before
public void setUp()
{
testKit = new TestKit(ActorSystem.apply());
tProbe = TestProbe.apply(testKit.system());
testedActor = TestActorRef.apply(new Props(new UntypedActorFactory()
{
public WorkerActor create()
{
return new WorkerActor();
}
}),testKit.system());
}
@Test
public void testWorkerActor()
{
ArrayList<Object> x = new ArrayList<Object>();
ArrayList<Object> y = new ArrayList<Object>();
x.add(0, 1); x.add(1, 2); x.add(2, 3); x.add(3, 4); x.add(4, 5);
y.add(0, 1.00); y.add(1, 2.00); y.add(2, 3.00); y.add(3, 4.00); y.add(4, 5.00);
Map<String, ArrayList<Object>> map = new HashMap<String, ArrayList<Object>>();
map.put("x", x);
map.put("y", y);
GesturePoints gp = new GesturePoints();
gp.setPoints(map);
tProbe = TestProbe.apply(testKit.system());
testedActor.tell(gp , tProbe.ref());
TestActor.Message message = tProbe.lastMessage();
Result result = (Result)message;
assertEquals(0.25 , result.getResult().get("x"));
assertEquals(0.25 , result.getResult().get("y"));
}
}
Maven还包含一个默认的测试类。 efault测试类和Actortest类都位于src/test/java文件夹中。
这是pom文件
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>com.theta.gesture</groupId>
<artifactId>com-theta-gesture</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>com-theta-gesture</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>Com.RubineEngine.GesturePoints</groupId>
<artifactId>Com-RubineEngine-GesturePoints</artifactId>
<version>1.0-SANPSHOT</version>
</dependency>
<dependency>
<groupId>com.result.gesture</groupId>
<artifactId>com-result-gesture</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-actor</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-remote</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-slf4j</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-testkit</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.typesafe.akka</groupId>
<artifactId>akka-kernel</artifactId>
<version>2.0.2</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>typesafe</id>
<name>Typesafe Repository</name>
<url>http://repo.typesafe.com/typesafe/releases/</url>
</repository>
<repository>
<id>repo</id>
<name>repo</name>
<snapshots>
<enabled>true</enabled>
</snapshots>
<url>file://${project.basedir}/repo</url>
</repository>
</repositories>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12.4</version>
<dependencies>
<dependency>
<groupId>org.apache.maven.surefire</groupId>
<artifactId>surefire-junit47</artifactId>
<version>2.12.4</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
错误消息如下
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building com-theta-gesture 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ com-theta-gesture ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ com-theta-gesture ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:testResources (default-testResources) @ com-theta-gesture ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\FAISAL\Desktop\disaster\com-theta-gesture\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ com-theta-gesture ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ com-theta-gesture ---
[WARNING] The POM for org.apache.maven:maven-plugin-api:jar:2.0.9 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for org.apache.maven:maven-artifact:jar:2.0.9 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for org.apache.maven:maven-project:jar:2.0.9 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for org.apache.maven:maven-core:jar:2.0.9 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for org.apache.maven:maven-toolchain:jar:2.0.9 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[INFO] Surefire report directory: C:\Users\FAISAL\Desktop\disaster\com-theta-gesture\target\surefire-reports
[INFO] Using configured provider org.apache.maven.surefire.junitcore.JUnitCoreProvider
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Concurrency config is parallel='none', perCoreThreadCount=true, threadCount=2, useUnlimitedThreads=false
Running com.theta.gesture.AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.011 sec
Running com.theta.gesture.ActorTest
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.562 sec <<< FAILURE!
testWorkerActor(com.theta.gesture.ActorTest) Time elapsed: 0.002 sec <<< ERROR!
java.lang.ClassCastException: akka.testkit.TestActor$NullMessage$ cannot be cast to com.result.gesture.Result
at com.theta.gesture.ActorTest.testWorkerActor(ActorTest.java:64)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:24)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at org.junit.runner.JUnitCore.run(JUnitCore.java:136)
at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:62)
at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Results :
Tests in error:
testWorkerActor(com.theta.gesture.ActorTest): akka.testkit.TestActor$NullMessage$ cannot be cast to com.result.gesture.Result
Tests run: 2, Failures: 0, Errors: 1, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.098s
[INFO] Finished at: Tue Oct 23 05:24:12 BST 2012
[INFO] Final Memory: 16M/106M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test (default-test) on project com-theta-gesture: There are test failures.
[ERROR]
[ERROR] Please refer to C:\Users\FAISAL\Desktop\disaster\com-theta-gesture\target\surefire-reports for the individual test results.
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
我是否必须将任何配置添加到application.conf文件
希望有人能帮助我。
1 个解决方案
解决方案1
0 已采纳 2012-10-23 10:53:17
在您的ActorTest ，尝试替换
TestActor.Message message = tProbe.lastMessage();
Result result = (Result)message;
有了这个：
tProbe.expectMsgClass(Result.class);
//TestActor.Message message = tProbe.lastMessage();
//Result result = (Result) message.msg(); <- Important
然后将WorkerActor更改为此：
if(msg instanceof GesturePoints) {
GesturePoints message = (GesturePoints) msg;
//Result rslt = initial_Theta(message);
//getSender().tell(rslt);
getSender().tell(new Result());
}
那应该过去了。 这验证了WorkerActor是否正在发回正确类型的消息（例如Result ）。
下一步是取消对对initial_Theta()调用的注释，并弄清楚为什么它不能正确填充Result 。
Java单元测试
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.