Added tests for IvyHook

main/test/src/main/MillIvyHookTest.scala

@@ -0,0 +1,58 @@
+package mill.main
+
+import java.io.File
+
+import scala.util.Try
+
+import ammonite.runtime.ImportHook.InterpreterInterface
+import coursierapi.{Dependency => CDependency, Module => CModule, ScalaVersion => CScalaVersion}
+import utest.{TestSuite, Tests, _}
+
+object MillIvyHookTest extends TestSuite {
+  val wd = os.pwd
+  def mapDep(d: CDependency): Seq[File] =
+    Seq(
+      (wd / d.getModule.getOrganization / d.getModule.getName / d.getVersion / s"${d.getModule.getName}-${d.getVersion}.jar").toIO
+    )
+  override def tests: Tests = Tests {
+    val interp = new InterpreterInterface {
+      def loadIvy(coordinates: CDependency*): Either[String, Seq[File]] =
+        Right(coordinates.flatMap(mapDep))
+      def watch(p: os.Path): Unit = ???
+      def scalaVersion: String = "2.13.6"
+    }
+    test("simple") {
+      val deps = Seq(
+        ("a:b:c", CDependency.of("a", "b", "c"), wd / "a" / "b" / "c" / "b-c.jar"),
+        (
+          "a::b:c",
+          CDependency.of(CModule.parse("a::b", CScalaVersion.of("2.13.6")), "c"),
+          wd / "a" / "b_2.13" / "c" / "b_2.13-c.jar"
+        ),
+        (
+          "a::b::c",
+          CDependency.of(
+            CModule.parse(
+              s"a::b_mill${mill.BuildInfo.millBinPlatform}",
+              CScalaVersion.of("2.13.6")
+            ),
+            "c"
+          ),
+          wd / "a" / s"b_mill${mill.BuildInfo.millBinPlatform}_2.13" / "c" / s"b_mill${mill.BuildInfo.millBinPlatform}_2.13-c.jar"
+        )
+      )
+      val checks = deps.map { case (coord, dep, path) =>
+        Try {
+          val expected: Either[String, (Seq[CDependency], Seq[File])] =
+            Right(Seq(dep), Seq(path.toIO))
+          val resolved = MillIvyHook.resolve(interp, Seq(coord))
+          assert(
+            // first check only adds context to the exception message
+            !coord.isEmpty && resolved == expected
+          )
+        }
+      }
+      assert(checks.forall(_.isSuccess))
+    }
+  }
+}