Add java17Settings

Author: clairemcginty

build.sbt

@@ -307,7 +307,8 @@ val commonSettings = Def
       )
     ),
     mimaSettings,
-    formatSettings
+    formatSettings,
+    java17Settings
   )
 
 lazy val publishSettings = Def.settings(
@@ -449,6 +450,17 @@ def splitTests(tests: Seq[TestDefinition], filter: Seq[String], forkOptions: For
   }
 }
 
+lazy val java17Settings = Seq(Test / javaOptions ++= (sys.props("java.version") match {
+  case v if v.startsWith("17.") =>
+    Seq(
+      "--add-opens",
+      "java.base/java.util=ALL-UNNAMED",
+      "--add-opens",
+      "java.base/java.lang.invoke=ALL-UNNAMED"
+    )
+  case _ => Seq.empty
+}))
+
 lazy val root: Project = Project("scio", file("."))
   .settings(commonSettings)
   .settings(