使用SBT运行JUnit测试

Question

我有一个0.13.7 SBT项目,有几个子项目.

其中一个叫做webapp,它有很多JUnit测试webapp/src/test/java.

运行时:

sbt webapp/test

只ScalaTest运行测试,但没有JUnit测试.

我的build.sbt档案片段:

libraryDependencies ++= Seq(
    "com.novocode" % "junit-interface" % "0.11" % Test
)

lazy val webapp = project
    settings(
        Seq(
            projectDependencies ++= Seq(
                ....
                "org.scalatest" %% "scalatest" % "2.2.2" % Test,
                "junit" % "junit" % "4.11" % Test,
                "com.novocode" % "junit-interface" % "0.11" % Test
            )
        ): _*
    )

示例JUnit测试:

import org.junit.Test;

public class CodificadorBase64Test {
    @Test
    public void testPlain() {
        byte b[] = {64, 127, 72, 36, 100, 1, 5, 9, 123};
        assertEquals("QH9IJGQBBQl7", CodificadorBase64.encode(b));
    }
}

更新(更多研究):

> webapp/testFrameworks
[info] List(TestFramework(WrappedArray(org.scalacheck.ScalaCheckFramework)), TestFramework(WrappedArray(org.specs2.runner.Specs2Framework, org.specs2.runner.SpecsFramework)), TestFramework(WrappedArray(org.specs.runner.SpecsFramework)), TestFramework(WrappedArray(org.scalatest.tools.Framework, org.scalatest.tools.ScalaTestFramework)), TestFramework(WrappedArray(com.novocode.junit.JUnitFramework))

show webapp/loadedTestFrameworks
[info] Map(TestFramework(WrappedArray(
  org.scalatest.tools.Framework, 
  org.scalatest.tools.ScalaTestFramework)
) -> org.scalatest.tools.Framework@65767aeb)

所以JUnitSBT知道支持但没有加载.

调试输出:

[debug] Framework implementation 'org.scalacheck.ScalaCheckFramework' not present.
[debug] Framework implementation 'org.scalacheck.ScalaCheckFramework' not present.
[debug] Framework implementation 'org.scalacheck.ScalaCheckFramework' not present.
[debug] Framework implementation 'org.scalacheck.ScalaCheckFramework' not present.
[debug] Framework implementation 'org.specs2.runner.Specs2Framework' not present.
[debug] Framework implementation 'org.specs2.runner.Specs2Framework' not present.
[debug] Framework implementation 'org.specs2.runner.Specs2Framework' not present.
[debug] Framework implementation 'org.specs2.runner.Specs2Framework' not present.
[debug] Framework implementation 'org.specs2.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs2.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs2.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs2.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs.runner.SpecsFramework' not present.
[debug] Framework implementation 'org.specs.runner.SpecsFramework' not present.
[debug] Framework implementation 'com.novocode.junit.JUnitFramework' not present.
[debug] Framework implementation 'com.novocode.junit.JUnitFramework' not present.
[debug] Framework implementation 'com.novocode.junit.JUnitFramework' not present.
[debug] Framework implementation 'com.novocode.junit.JUnitFramework' not present.
[debug] Subclass fingerprints: List((org.scalatest.Suite,false,org.scalatest.tools.Framework$$anon$1@3ad42aff))
[debug] Subclass fingerprints: List((org.scalatest.Suite,false,org.scalatest.tools.Framework$$anon$1@97f54b))
[debug] Annotation fingerprints: List((org.scalatest.WrapWith,false,org.scalatest.tools.Framework$$anon$2@6a589982))
[debug] Annotation fingerprints: List((org.scalatest.WrapWith,false,org.scalatest.tools.Framework$$anon$2@1b95d5e6))
[debug] Subclass fingerprints: List((org.scalatest.Suite,false,org.scalatest.tools.Framework$$anon$1@5c997dac))
[debug] Subclass fingerprints: List((org.scalatest.Suite,false,org.scalatest.tools.Framework$$anon$1@406c43ef))
[debug] Annotation fingerprints: List((org.scalatest.WrapWith,false,org.scalatest.tools.Framework$$anon$2@282ddefc))
[debug] Annotation fingerprints: List((org.scalatest.WrapWith,false,org.scalatest.tools.Framework$$anon$2@4400c80))

使用:

• SBT 0.13.9,和
• JUnit 4.x.

相关信息:

• 为什么不用"sbt test"执行junit测试？
• SBT文件

Answer 1

最后,我发现,我必须将以下设置添加到子项目中:

lazy val webapp = project
    settings(
        Seq(
            projectDependencies ++= Seq(
                ....
                "org.scalatest" %% "scalatest" % "2.2.2" % Test,
                "junit" % "junit" % "4.11" % Test,
                crossPaths := false,
                "com.novocode" % "junit-interface" % "0.11" % Test
            )
        ): _*
    )

junit-interface在子项目中声明依赖项非常重要,此外,设置为false crossPaths.

这个问题给出了线索.

如果主项目没有JUnit测试,则不需要提供所需的测试设置.

另外,为了解失败的方法和原因,我们需要这个设置:

testOptions in Test := Seq(Tests.Argument(TestFrameworks.JUnit, "-a"))

Answer 2

关于在SBT中支持JUnit的这个问题已被多次询问,并且格式略有不同.

多次点击使我很难找到最简单和最新的答案.

@ david.perez的答案似乎很清楚,适用于当前(2018年)的SBT 1.1.4.

(那个特别的问题是关于JUnit版本的冲突.exclude("junit", "junit-dep")可能没有必要.)

我还会在这里复制粘贴代码以便快速访问:

libraryDependencies ++= Seq(
  "junit" % "junit" % "4.12" % Test,
  "com.novocode" % "junit-interface" % "0.11" % Test exclude("junit", "junit-dep")
)