diff --git a/compiler/test/dotty/tools/dotc/Playground.scala b/compiler/test/dotty/tools/dotc/Playground.scala
new file mode 100644
index 000000000000..40a24c0408cf
--- /dev/null
+++ b/compiler/test/dotty/tools/dotc/Playground.scala
@@ -0,0 +1,13 @@
+package dotty.tools.dotc
+
+import dotty.tools.vulpix._
+import org.junit.Test
+import org.junit.Ignore
+
+@Ignore class Playground:
+  import TestConfiguration._
+  import CompilationTests._
+
+  @Test def example: Unit =
+    implicit val testGroup: TestGroup = TestGroup("playground")
+    compileFile("tests/playground/example.scala", defaultOptions).checkCompile()
diff --git a/compiler/test/dotty/tools/dotc/SettingsTests.scala b/compiler/test/dotty/tools/dotc/SettingsTests.scala
index dcee1ebde4f2..e3076f055d51 100644
--- a/compiler/test/dotty/tools/dotc/SettingsTests.scala
+++ b/compiler/test/dotty/tools/dotc/SettingsTests.scala
@@ -106,7 +106,7 @@ class SettingsTests {
         false
 
     val default = Settings.defaultState
-    assertThrows[IllegalArgumentException](checkMessage("found: not an option of type java.lang.String, required: Boolean")) {
+    dotty.tools.assertThrows[IllegalArgumentException](checkMessage("found: not an option of type java.lang.String, required: Boolean")) {
       Settings.option.updateIn(default, "not an option")
     }
 
diff --git a/project/Build.scala b/project/Build.scala
index 0b8318f35e05..9319e1621159 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -251,7 +251,7 @@ object Build {
     // Prevent sbt from rewriting our dependencies
     scalaModuleInfo ~= (_.map(_.withOverrideScalaVersion(false))),
 
-    libraryDependencies += "com.novocode" % "junit-interface" % "0.11" % Test,
+    libraryDependencies += "com.github.sbt" % "junit-interface" % "0.13.3" % Test,
 
     // If someone puts a source file at the root (e.g., for manual testing),
     // don't pick it up as part of any project.
@@ -1327,7 +1327,7 @@ object Build {
         "org.jsoup" % "jsoup" % "1.14.3", // Needed to process .html files for static site
         Dependencies.`jackson-dataformat-yaml`,
 
-        "com.novocode" % "junit-interface" % "0.11" % "test",
+        "com.github.sbt" % "junit-interface" % "0.13.3" % Test,
       ),
       Compile / mainClass := Some("dotty.tools.scaladoc.Main"),
       Compile / buildInfoKeys := Seq[BuildInfoKey](version),
diff --git a/tests/playground/example.scala b/tests/playground/example.scala
new file mode 100644
index 000000000000..29ea308f689b
--- /dev/null
+++ b/tests/playground/example.scala
@@ -0,0 +1,4 @@
+object Test:
+  val foo: Int = 2
+  def bar(x: Int): Int = x + x
+  bar(foo)