试图让 ScalaTest 工作:“没有要运行的测试"；在进行“mvn 测试"时； [英] Trying to get ScalaTest working: "There are no tests to run" when doing "mvn test"
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问题描述
我终于让它工作了！！！
I finally got it to work!!!
它需要 pom.xml 中的 JUnit 和我的 .scala 中的三个语句的组合:
It needed a combination of JUnit in the pom.xml, and three statements in my .scala:
import org.junit.runner.RunWith
import org.scalatest.junit.JUnitRunner
@RunWith(classOf[JUnitRunner])
由于某种原因，尝试配置 Surefire 会使测试再次停止运行.
For some reason, trying to configure Surefire makes the tests stop running again.
我在 IntelliJ 中编码，试图通过 Maven (mvn test) 构建过程运行一个简单的 ScalaTest 测试.没有任何错误，但遗憾的是也没有运行测试.
I'm coding in IntelliJ, trying to get a simple ScalaTest test running via a Maven (mvn test) build process. There aren't any errors, but unfortunately no tests run either.
这是我的 .scala 文件:
Here is my .scala file:
import org.scalatest.FunSuite
import org.scalatest.BeforeAndAfter
class ExampleSuite extends FunSuite with BeforeAndAfter {
before {
println("Doing setup tasks...")
}
test("Example test of checking the browser title") {
val expected_title = "Company Platform"
var actual_title = "Company Platform"
assert(actual_title == expected_title)
}
after {
println("Doing teardown tasks...")
}
}
这是 Maven 输出:
Here's the Maven output:
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for JoeTestDemo:JoeTestDemo:jar:1.0
[WARNING] 'build.plugins.plugin.version' for org.scala-tools:maven-scala-plugin is missing. @ line 42, column 21
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building JoeTestDemo 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ JoeTestDemo ---
[WARNING] Using platform encoding (MacRoman actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ JoeTestDemo ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-scala-plugin:2.15.2:compile (default) @ JoeTestDemo ---
[INFO] Checking for multiple versions of scala
[INFO] includes = [**/*.scala,**/*.java,]
[INFO] excludes = []
[WARNING] No source files found.
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:testResources (default-testResources) @ JoeTestDemo ---
[WARNING] Using platform encoding (MacRoman actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /Users/Joeshaver/Projects/JoeTestDemo/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ JoeTestDemo ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-scala-plugin:2.15.2:testCompile (default) @ JoeTestDemo ---
[INFO] Checking for multiple versions of scala
[INFO] includes = [**/*.scala,**/*.java,]
[INFO] excludes = []
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-surefire-plugin:2.7.2:test (default-test) @ JoeTestDemo ---
[INFO] Surefire report directory: /Users/Joeshaver/Projects/JoeTestDemo/target/surefire-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
There are no tests to run.
Results :
Tests run: 0, Failures: 0, Errors: 0, Skipped: 0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.368s
[INFO] Finished at: Tue Oct 23 10:58:30 PDT 2012
[INFO] Final Memory: 6M/81M
[INFO] ------------------------------------------------------------------------
这里是 pom.xml.我认为我的 Maven Scala 插件可能不对:
Here is the pom.xml. I think my Maven Scala plugin might not be right:
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>JoeTestDemo</groupId>
<artifactId>JoeTestDemo</artifactId>
<version>1.0</version>
<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>2.9.0-1</version>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest_2.9.0-1</artifactId>
<version>1.6.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<sourceDir>src/main/java</sourceDir>
<jvmArgs>
<jvmArg>-Xms64m</jvmArg>
<jvmArg>-Xmx1024m</jvmArg>
</jvmArgs>
</configuration>
</plugin>
</plugins>
</build>
</project>
推荐答案
如果你在 Maven 上运行，那么你要么必须用
If you're running on Maven, then you'll either have to annotate your test class(es) with
@RunWith(classOf[JUnitRunner])
这需要您将 JUnit 作为依赖项.或者你可以使用 ScalaTest Maven 插件(虽然我自己没用过).
This would require you having JUnit as a dependency. Or you could use the ScalaTest Maven Plugin (haven't used it myself though).
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