我有一个0.13.7 SBT项目，其中有几个子项目。
其中之一被称为webapp，并且在中有许多JUnit测试webapp/src/test/java。
运行时：
sbt webapp/test
仅ScalaTest运行测试，而不运行JUnit测试。
我的build.sbt文件片段：
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
)
): _*
)
JUnit测试示例：
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)
因此JUnit，SBT知道支持但尚未加载。
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：
相关信息：
最后，我发现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
)
): _*
)
重要的是junit-interface在子项目中声明依赖项，此外，将设置设置为false crossPaths。
这个问题已经提供了线索。
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，为了了解失败的方法和原因，我们需要以下设置：
testOptions in Test := Seq(Tests.Argument(TestFrameworks.JUnit, "-a"))
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我来说两句