Merge pull request #204 from alexarchambault/less-tests

Run less tests on CI

Author: alexarchambault

.github/workflows/ci.yml

@@ -19,8 +19,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Running into https://github.com/oracle/graal/issues/3171 on windows-latest / windows-2019
-        OS: ["ubuntu-latest", "macos-latest", "windows-2016"]
+        # If adding Windows here, use windows-2016 rather than windows-latest or windows-2019.
+        # Running into https://github.com/oracle/graal/issues/3171 on windows-latest / windows-2019.
+        OS: ["ubuntu-latest"]
     steps:
     - uses: actions/checkout@v2
       with:
@@ -32,9 +33,9 @@ jobs:
         jvm: 8
     - name: Copy launcher
       run: ./mill -i copyJvmLauncher artifacts/
-      if: runner.os == 'Linux' || runner.os == 'Windows'
+      if: runner.os == 'Linux'
     - uses: actions/[email protected]
-      if: runner.os == 'Linux' || runner.os == 'Windows'
+      if: runner.os == 'Linux'
       with:
         name: launchers
         path: artifacts/

modules/integration/src/test/scala/scala/cli/integration/BspTests3.scala

@@ -0,0 +1,54 @@
+package scala.cli.integration
+
+import com.eed3si9n.expecty.Expecty.expect
+
+class MetaCheck extends munit.FunSuite {
+  /*
+   * We don't run tests with --scala 3.… any more, and only rely on those
+   * with no --scala option.
+   * The test here ensures the default version is indeed Scala 3.
+   */
+  test("Scala 3 is the default") {
+    val testInputs = TestInputs(
+      Seq(
+        os.rel / "PrintScalaVersion.scala" ->
+          """// https://gist.github.com/romanowski/de14691cab7340134e197419bc48919a
+            |
+            |object PrintScalaVersion extends App {
+            |  def props(url: java.net.URL): java.util.Properties = {
+            |    val properties = new java.util.Properties()
+            |    val is = url.openStream()
+            |    try {
+            |      properties.load(is)
+            |      properties
+            |    } finally is.close()
+            |  }
+            |
+            |  def scala2Version: String =
+            |    props(getClass.getResource("/library.properties")).getProperty("version.number")
+            |
+            |  def checkScala3(res: java.util.Enumeration[java.net.URL]): String =
+            |    if (!res.hasMoreElements) scala2Version else {
+            |      val manifest = props(res.nextElement)
+            |      manifest.getProperty("Specification-Title") match {
+            |        case "scala3-library-bootstrapped" =>
+            |          manifest.getProperty("Implementation-Version")
+            |        case _ => checkScala3(res)
+            |      }
+            |    }
+            |  val manifests = getClass.getClassLoader.getResources("META-INF/MANIFEST.MF")
+            |
+            |  val scalaVersion = checkScala3(manifests)
+            |
+            |  println(scalaVersion)
+            |}
+            |""".stripMargin
+      )
+    )
+    testInputs.fromRoot { root =>
+      val res          = os.proc(TestUtil.cli, ".").call(cwd = root)
+      val scalaVersion = res.out.text().trim
+      expect(scalaVersion == Constants.scala3)
+    }
+  }
+}