无法运行“mvn clean test”使用scalatest

Question

我正在学习如何使用 ScalaTest。

现在我在 JetBrains IDEA 中使用 scala 2.11.8。

首先，我编写了一个简单的特征traitA。

package Cha1_TraitsAndMixinCompositions.Clash

trait A {
  def hello(): String = "Hello, I am trait A!"

  def pass(a: Int): String = s"Trait A said: 'You passed $a.'"
}

然后我编写了一个测试文件 TraitASpec.scala：

import Cha1_TraitsAndMixinCompositions.Clash.A
import org.scalatest.flatspec.AnyFlatSpec
import org.scalatest.matchers.should.Matchers

class TraitASpec extends AnyFlatSpec with Matchers with A {
  "hello" should "greet properly." in {
    hello() should equal("Hello, I am trait A!")
  }
}

当我单击绿色按钮时，它工作正常。 单击绿色按钮

但是当我运行命令mvn clean test时，出了问题：

[INFO] compiling 4 Scala sources to /Users/yangdaichuan/Desktop/gitlab/SparkGraphX/target/test-classes ...
[ERROR] /Users/yyy/Desktop/gitlab/SparkGraphX/src/test/scala/TraitASpec.scala:1: not found: object Cha1_TraitsAndMixinCompositions
[ERROR] /Users/yyy/Desktop/gitlab/SparkGraphX/src/test/scala/TraitASpec.scala:5: not found: type A
[ERROR] /Users/yyy/Desktop/gitlab/SparkGraphX/src/test/scala/TraitASpec.scala:7: not found: value hello
[ERROR] three errors found
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  18.812 s
[INFO] Finished at: 2022-03-02T14:13:23+08:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal net.alchim31.maven:scala-maven-plugin:4.5.6:testCompile (default) on project Spark2Learn: Execution default of goal net.alchim31.maven:scala-maven-plugin:4.5.6:testCompile failed: Compilation failed: InterfaceCompileFailed -> [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/PluginExecutionException

如果我删除这个 TraitASpec.scala ，然后运行 ​​mvn clean test 它工作正常。

顺便说一句，当我遵循 ScalaTest 用户指南 并编写了一个像 StackSpec.txt 这样的测试文件时。 scala：

import collection.mutable.Stack
import org.scalatest.flatspec.AnyFlatSpec

class StackSpec extends AnyFlatSpec {

  "A Stack" should "pop values in last-in-first-out order" in {
    val stack = new Stack[Int]
    stack.push(1)
    stack.push(2)
    assert(stack.pop() === 2)
    assert(stack.pop() === 1)
  }

  it should "throw NoSuchElementException if an empty stack is popped" in {
    val emptyStack = new Stack[String]
    assertThrows[NoSuchElementException] {
      emptyStack.pop()
    }
  }
}

并运行 mvn clean test 它有效。

我猜文件结构或代码路径有问题？

你能帮助我吗？谢谢你！

Answer 1

在配置/设置中检查工作目录是什么。将其设置为模块路径。

还可以尝试使/清除缓存无效并重新启动，它会再次选择文件。