Add log if someone try to run test without zio-test-sbt

modules/build/src/main/scala/scala/build/internal/Runner.scala

@@ -213,7 +213,7 @@ object Runner {
       }
   }
 
-  private def frameworkName(
+  def frameworkName(
     classPath: Seq[Path],
     parentInspector: AsmTestRunner.ParentInspector
   ): Either[NoTestFrameworkFoundError, String] = {

modules/cli/src/main/scala/scala/cli/commands/Test.scala

@@ -2,11 +2,14 @@ package scala.cli.commands
 
 import caseapp._
 
+import java.nio.file.Path
+
 import scala.build.EitherCps.{either, value}
 import scala.build.Ops._
 import scala.build.errors.{BuildException, CompositeBuildException}
 import scala.build.internal.{Constants, Runner}
 import scala.build.options.{Platform, Scope}
+import scala.build.testrunner.AsmTestRunner
 import scala.build.{Build, Builds, CrossKey, Logger}
 import scala.cli.CurrentParams
 
@@ -162,21 +165,49 @@ object Test extends ScalaCommand[TestOptions] {
           }
         }
       case Platform.JVM =>
+        val classPath = build.fullClassPath
+
+        val testFrameworkOpt0 = testFrameworkOpt.orElse {
+          findTestFramework(classPath, logger)
+        }
+
         val extraArgs =
           (if (requireTests) Seq("--require-tests") else Nil) ++
             build.options.internal.verbosity.map(v => s"--verbosity=$v") ++
-            testFrameworkOpt.map(fw => s"--test-framework=$fw").toSeq ++
+            testFrameworkOpt0.map(fw => s"--test-framework=$fw").toSeq ++
             Seq("--") ++ args
 
         Runner.runJvm(
           build.options.javaHome().value.javaCommand,
           build.options.javaOptions.javaOpts.map(_.value),
-          build.fullClassPath.map(_.toFile),
+          classPath.map(_.toFile),
           Constants.testRunnerMainClass,
           extraArgs,
           logger,
           allowExecve = allowExecve
         )
     }
   }
+
+  def findTestFramework(classPath: Seq[Path], logger: Logger): Option[String] = {
+    val classPath0 = classPath.map(_.toString)
+
+    // https://github.com/VirtusLab/scala-cli/issues/426
+    if (
+      classPath0.exists(_.contains("zio-test")) && !classPath0.exists(_.contains("zio-test-sbt"))
+    ) {
+      val parentInspector = new AsmTestRunner.ParentInspector(classPath)
+      Runner.frameworkName(classPath, parentInspector) match {
+        case Right(f) => Some(f)
+        case Left(_) =>
+          logger.message(
+            "zio-test found in the class path, zio-test-sbt should be added to run zio tests with Scala CLI."
+          )
+          None
+      }
+    }
+    else
+      None
+  }
+
 }