如 scalatest.org 上的参考文档中所述，我再次从 scalatest.org 站点和 maven 配置中使用了示例测试，但是每当我运行mvn clean install它时，它都会引发 scala 测试的编译时错误。
分享pom.xml以下内容
<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>com.scala.example</groupId>
<artifactId>ScalaTest</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<log4j.core.version>2.9.1</log4j.core.version>
<log4j.api.version>2.9.1</log4j.api.version>
<scala.version>2.11</scala.version>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>4.5.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>
net.alchim31.maven
</groupId>
<artifactId>
scala-maven-plugin
</artifactId>
<versionRange>
[3.3.1,)
</versionRange>
<goals>
<goal>add-source</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.2.0</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>4.5.2</version>
<executions>
<execution>
<id>scala-main-compile</id>
<phase>process-resources</phase>
<goals>
<goal>add-source</goal>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
<configuration>
<source>src/main/scala</source>
<source>src/test/scala</source>
</configuration>
</execution>
<!--execution>
<id>scala-test-compile</id>
<phase>process-test-resources</phase>
<goals>
<goal>add-source</goal>
<goal>testCompile</goal>
</goals>
<configuration>
<source>src/test/scala</source>
</configuration>
</execution-->
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.2.0</version>
<configuration>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- disable surefire -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.7</version>
<configuration>
<skipTests>true</skipTests>
</configuration>
</plugin>
<!-- enable scalatest -->
<plugin>
<groupId>org.scalatest</groupId>
<artifactId>scalatest-maven-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<reportsDirectory>${project.build.directory}/surefire-reports</reportsDirectory>
<junitxml>.</junitxml>
<filereports>ScalaTests.txt</filereports>
<skipTests>false</skipTests>
</configuration>
<executions>
<execution>
<id>test</id>
<goals>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
<!--enable SCoverage-->
<!--plugin>
<groupId>org.scoverage</groupId>
<artifactId>scoverage-maven-plugin</artifactId>
<version>1.1.1</version>
<configuration>
<scalaVersion>${scala.version}</scalaVersion>
<aggregate>true</aggregate>
</configuration>
</plugin-->
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.scoverage</groupId>
<artifactId>scoverage-maven-plugin</artifactId>
<version>1.1.1</version>
<configuration>
<scalaVersion>${scala.version}</scalaVersion>
<aggregate>true</aggregate>
</configuration>
<reportSets>
<reportSet>
<reports>
<report>report</report>
</reports>
</reportSet>
</reportSets>
</plugin>
</plugins>
</reporting>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-core_2.10 -->
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.10</artifactId>
<version>2.1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.spark/spark-sql_2.10 -->
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-sql_2.10</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>2.10.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-lang/commons-lang -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>org.scalaj</groupId>
<artifactId>scalaj-http_2.11</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.scalatest</groupId>
<artifactId>scalatest_2.10</artifactId>
<version>2.2.6</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
根据 scalatest.org 的 Scala 测试基础测试类
package com.scala.example.test
import org.scalatest._
import flatspec._
import matchers._
abstract class UnitSpec extends AnyFlatSpec with should.Matchers with OptionValues with Inside with Inspectors
实际的 Scala 测试
package com.scala.example.test
import collection.mutable.Stack
import org.scalatest.flatspec.AnyFlatSpec
class StackSpecTest extends UnitSpec {
"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()
}
}
}
运行时出错mvn clean install
[INFO] --- scala-maven-plugin:4.5.2:testCompile (scala-main-compile) @ ScalaTest ---
[WARNING] Expected all dependencies to require Scala version: 2.11.0
[WARNING] org.json4s:json4s-core_2.10:3.2.11 requires scala version: 2.10.0
[WARNING] Multiple versions of scala libraries detected!
[INFO] Using incremental compilation using Mixed compile order
[INFO] Compiler bridge file: C:\Users\652061744\.sbt\1.0\zinc\org.scala-sbt\org.scala-sbt-compiler-bridge_2.11-1.5.3-bin_2.11.0__52.0-1.5.3_20210509T044243.jar
[INFO] compiling 4 Scala sources to C:\Code\target\test-classes ...
[ERROR] C:/Code/src/test/scala/com/scala/example/test/StackSpecTest.scala:4: object flatspec is not a member of package org.scalatest
[ERROR] C:/Code/src/test/scala/com/scala/example/test/UnitSpec.scala:4: not found: object flatspec
[ERROR] C:/Code/src/test/scala/com/scala/example/test/UnitSpec.scala:7: not found: type AnyFlatSpec
[ERROR] C:/Code/src/test/scala/com/scala/example/test/UnitSpec.scala:7: not found: value should
[ERROR] C:/Code/src/test/scala/com/scala/example/test/StackSpecTest.scala:8: value should is not a member of String
[ERROR] C:/Code/src/test/scala/com/scala/example/test/StackSpecTest.scala:12: value === is not a member of Int
[ERROR] C:/Code/src/test/scala/com/scala/example/test/StackSpecTest.scala:13: value === is not a member of Int
[ERROR] C:/Code/src/test/scala/com/scala/example/test/StackSpecTest.scala:16: not found: value it
[ERROR] 18 errors found
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 43.967 s
[INFO] Finished at: 2021-06-13T12:56:17+05:30
[INFO] ------------------------------------------------------------------------
有关基于其他类似文章探索的信息，也共享文件夹结构..
\src\main\resources - resources folder
\src\main\scala - application specific scala components to be tested
\src\main\scala - Scala test cases are here