pom.xml包含未编译的scalatest intellij

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.example</groupId>
  <artifactId>my-project</artifactId>
  <version>1.0.0</version>
  
  <dependencies>
    <!-- 其他依赖项 -->
    <dependency>
      <groupId>org.scalatest</groupId>
      <artifactId>scalatest_2.12</artifactId>
      <version>3.2.9</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  
  <build>
    <plugins>
      <!-- 其他插件 -->
      <plugin>
        <groupId>org.scala-tools</groupId>
        <artifactId>maven-scala-plugin</artifactId>
        <version>2.15.2</version>
        <executions>
          <execution>
            <goals>
              <goal>compile</goal>
              <goal>testCompile</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>