我使用以下步骤创建了一个新的Scala项目:
mvn org.apache.maven.plugins:maven-archetype-plugin:2.2:generate
-DarchetypeGroupId=org.scala-tools.archetypes
-DarchetypeArtifactId=scala-archetype-simple
-DarchetypeVersion=1.3
-DgroupId=myGroup
-DartifactId=myProject
-Dversion=0.1.0
-DinteractiveMode=false
以下是我的POM:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>myGroup</groupId>
<artifactId>myProject</artifactId>
<version>0.1.0</version>
<name>${project.artifactId}</name>
<description>My wonderfull scala app</description>
<inceptionYear>2010</inceptionYear>
<licenses>
<license>
<name>My License</name>
<url>http://....</url>
<distribution>repo</distribution>
</license>
</licenses>
<properties>
<maven.compiler.source>1.5</maven.compiler.source>
<maven.compiler.target>1.5</maven.compiler.target>
<encoding>UTF-8</encoding>
<scala.version>2.8.0</scala.version>
</properties>
<!--
<repositories>
<repository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</pluginRepository>
</pluginRepositories>
-->
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scala.version}</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.scala-tools.testing</groupId>
<artifactId>specs_${scala.version}</artifactId>
<version>1.6.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest</artifactId>
<version>1.2</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/scala</sourceDirectory>
<testSourceDirectory>src/test/scala</testSourceDirectory>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<version>2.15.0</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
<configuration>
<args>
<arg>-make:transitive</arg>
<arg>-dependencyfile</arg>
<arg>${project.build.directory}/.scala_dependencies</arg>
</args>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.6</version>
<configuration>
<useFile>false</useFile>
<disableXmlReport>true</disableXmlReport>
<!-- If you have classpath issue like NoDefClassError,... -->
<!-- useManifestOnlyJar>false</useManifestOnlyJar -->
<includes>
<include>**/*Test.*</include>
<include>**/*Suite.*</include>
</includes>
</configuration>
</plugin>
</plugins>
</build>
</project>
我可以运行mvn test
,并且样例测试可以成功运行。我想使用最新版本的scala(我已经下载/安装了2.9.2...),但是org.scala-tools.testing scala_VERSION依赖的最新版本似乎是2.9.1。我在我的POM中进行了以下更改:
<scala.version>2.9.1</scala.version>
并且。
<dependency>
<groupId>org.scala-tools.testing</groupId>
<artifactId>specs_${scala.version}</artifactId>
<version>1.6.5</version>
<scope>test</scope>
</dependency>
现在,运行
mvn test
会给出: -------------------------------------------------------
T E S T S
-------------------------------------------------------
Running samples.ListSuite
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.674 sec <<< FAILURE!
initializationError(samples.ListSuite) Time elapsed: 0.003 sec <<< ERROR!
java.lang.ClassCastException: scala.collection.immutable.Set$EmptySet$ cannot be
cast to scala.collection.generic.Addable
at org.scalatest.FunSuite$class.test(FunSuite.scala:1039)
at samples.ListSuite.test(scalatest.scala:59)
at samples.ListSuite.<init>(scalatest.scala:61)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at java.lang.Class.newInstance0(Class.java:372)
at java.lang.Class.newInstance(Class.java:325)
at org.scalatest.junit.JUnitRunner.<init>(JUnitRunner.scala:62)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:24)
at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:51)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:120)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:103)
at org.apache.maven.surefire.Surefire.run(Surefire.java:169)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)
Running samples.StackSuite
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.12 sec
Running samples.AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.001 sec
Results :
Tests in error:
initializationError(samples.ListSuite)
Tests run: 4, Failures: 0, Errors: 1, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.880s
[INFO] Finished at: Wed Oct 10 01:10:56 ADT 2012
[INFO] Final Memory: 9M/112M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.6:test (default-test) on project myProject: There are test failures.
[ERROR]
[ERROR] Please refer to C:\Dropbox\work\dev\scalasandbox\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
我本来有一些非常简单的测试(由maven原型插件创建的样本),但是将scala的版本仅提高一个较小的版本,就导致这些测试失败?我是否应该继续使用scala 2.8,直到maven工具跟上步伐呢?
mvn clean
没有帮助。 - MrDrews