scala - 试图让 ScalaTest 工作 : "There are no tests to run" when doing "mvn test"

Question

编辑:我终于让它工作了!!!

它需要 pom.xml 中的 JUnit 和我的 .scala 中的三个语句的组合:

import org.junit.runner.RunWith
import org.scalatest.junit.JUnitRunner

@RunWith(classOf[JUnitRunner])

出于某种原因，尝试配置 Surefire 会使测试再次停止运行。

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，但不幸的是也没有运行测试。

这是我的 .scala 文件:

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:

[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] ------------------------------------------------------------------------

这是 pom.xml。我认为我的 Maven Scala 插件可能不对:

<?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>

Answer 1

如果你在 Maven 上运行，那么你要么必须用

@RunWith(classOf[JUnitRunner])

这将要求您将 JUnit 作为依赖项。或者您可以使用 ScalaTest Maven Plugin (虽然我自己没用过)。