ScalaCommandTest.scala

package dotty.tools.dotc

import org.junit.Test
import org.junit.Assert._
import org.junit.Rule
import org.junit.rules.TemporaryFolder
import dotty.tools.dotc.config.Settings._

class ScalaCommandTest:

  private val _temporaryFolder = new TemporaryFolder

  @Rule
  def temporaryFolder = _temporaryFolder

  @Test def `Simple one parameter`: Unit =
    val settings = config.ScalaSettings()
    val args = "-cp path/to/classes1:other/path/to/classes2 files".split(" ")
    val summary = ScalacCommand.distill(args, settings, settings.defaultState)
    given SettingsState = summary.sstate
    assertEquals("path/to/classes1:other/path/to/classes2", settings.classpath.value)
    assertEquals("files" :: Nil, summary.arguments)

  @Test def `Unfold @file`: Unit =
    val settings = config.ScalaSettings()
    val file = temporaryFolder.newFile("config")
    val writer = java.io.FileWriter(file);
    writer.write("-sourceroot myNewRoot someMoreFiles");
    writer.close();
    val args = s"-cp path/to/classes1:other/path/to/classes2 @$file someFiles".split(" ")
    val summary = ScalacCommand.distill(args, settings, settings.defaultState)

    given SettingsState = summary.sstate
    assertEquals("path/to/classes1:other/path/to/classes2", settings.classpath.value)
    assertEquals("myNewRoot", settings.sourceroot.value)
    assertEquals("someMoreFiles" :: "someFiles" :: Nil, summary.arguments)

  extension [T](setting: Setting[T])
    private def value(using ss: SettingsState): T = setting.valueIn(ss)