in with GitHub Actions, out with Travis-CI

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: test
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [8, 11, 17]
+        scala: [2.11.12, 2.12.15, 2.13.6, 3.0.2]
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - uses: coursier/cache-action@v6
+    - uses: actions/setup-java@v2
+      with:
+        distribution: adopt
+        java-version: ${{matrix.java}}
+    - name: Test
+      run: sbt ++${{matrix.scala}} test headerCheck versionPolicyCheck package

.github/workflows/release.yml

@@ -0,0 +1,21 @@
+name: Release
+on:
+  push:
+    tags: ["*"]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-java@v2
+        with:
+          distribution: adopt
+          java-version: 8
+      - run: sbt versionCheck ci-release
+        env:
+          PGP_PASSPHRASE: ${{secrets.PGP_PASSPHRASE}}
+          PGP_SECRET: ${{secrets.PGP_SECRET}}
+          SONATYPE_PASSWORD: ${{secrets.SONATYPE_PASSWORD}}
+          SONATYPE_USERNAME: ${{secrets.SONATYPE_USERNAME}}

README.md

@@ -1,5 +1,4 @@
-# scala-java8-compat [![Build Status](https://travis-ci.org/scala/scala-java8-compat.svg?branch=master)](https://travis-ci.org/scala/scala-java8-compat) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.11.svg?label=latest%20release%20for%202.11"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.11) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.12.svg?label=latest%20release%20for%202.12"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.12) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.13.svg?label=latest%20release%20for%202.13"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.13)
-
+# scala-java8-compat [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.11.svg?label=latest%20release%20for%202.11"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.11) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.12.svg?label=latest%20release%20for%202.12"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.12) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_2.13.svg?label=latest%20release%20for%202.13"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_2.13) [<img src="https://img.shields.io/maven-central/v/org.scala-lang.modules/scala-java8-compat_3.svg?label=latest%20release%20for%203"/>](http://search.maven.org/#search%7Cga%7C1%7Cg%3Aorg.scala-lang.modules%20a%3Ascala-java8-compat_3)
 
 A Java 8 compatibility kit for Scala 2.12 and 2.11.
 

benchmark/build.sbt

@@ -5,8 +5,8 @@ val parseJmh = TaskKey[Unit]("parseJmh", "Parses JMH benchmark logs in results/j
 
 lazy val root = (project in file(".")).settings(
   name := "java8-compat-bench",
-  scalaVersion := "2.11.11",
-  crossScalaVersions := List("2.11.11" /* TODO, "2.12.0-M4"*/),
+  scalaVersion := "2.11.12",
+  crossScalaVersions := List("2.11.12" /* TODO, "2.12.0-M4"*/),
   organization := "org.scala-lang.modules",
   version := "0.6.0-SNAPSHOT",
   unmanagedJars in Compile ++= Seq(baseDirectory.value / "../target/scala-2.11/scala-java8-compat_2.11-0.9.0-SNAPSHOT.jar"),

build.sbt

@@ -18,7 +18,13 @@ def osgiExport(scalaVersion: String, version: String) = {
   }) ++ Seq(s"scala.compat.java8.*;version=${version}")
 }
 
+// shouldn't be necessary anymore after https://github.com/lampepfl/dotty/pull/13498
+// makes it into a release
+ThisBuild / libraryDependencySchemes += "org.scala-lang" %% "scala3-library" % "semver-spec"
+
 lazy val commonSettings = Seq(
+  crossScalaVersions := Seq("2.13.6", "2.12.15", "2.11.12", "3.0.2"),
+  scalaVersion := crossScalaVersions.value.head,
   versionPolicyIntention := Compatibility.BinaryAndSourceCompatible,
   Compile / unmanagedSourceDirectories ++= {
     (Compile / unmanagedSourceDirectories).value.flatMap { dir =>
@@ -141,7 +147,7 @@ lazy val scalaJava8Compat = (project in file("."))
         JavaDoc / packageDoc / artifactName := ((sv, mod, art) => "" + mod.name + "_" + sv.binary + "-" + mod.revision + "-javadoc.jar"),
         libraryDependencies ++= (CrossVersion.partialVersion(scalaVersion.value) match {
           case Some((3, _)) => Seq()
-          case _            => Seq(compilerPlugin("com.typesafe.genjavadoc" % "genjavadoc-plugin" % "0.17" cross CrossVersion.full))
+          case _            => Seq(compilerPlugin("com.typesafe.genjavadoc" % "genjavadoc-plugin" % "0.18" cross CrossVersion.full))
         }),
         Compile / scalacOptions ++= (CrossVersion.partialVersion(scalaVersion.value) match {
           case Some((3, _)) => Seq()

project/plugins.sbt

@@ -1 +1 @@
-addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "2.4.0")
+addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "3.0.0")

src/main/scala-2.13+/scala/compat/java8/collectionImpl/package.scala

@@ -1,3 +1,15 @@
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
 package scala.compat.java8
 
 package object collectionImpl {

src/main/scala-2.13+/scala/compat/java8/converterImpl/StepperExtensions.scala

@@ -1,3 +1,15 @@
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
 package scala.compat.java8.converterImpl
 
 import scala.collection.convert.StreamExtensions.AccumulatorFactoryInfo

src/main/scala-2.13+/scala/concurrent/java8/FuturesConvertersImplCompat.scala

@@ -1,3 +1,15 @@
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
 package scala.concurrent.java8
 
 import scala.concurrent.ExecutionContext

src/main/scala-2.13-/scala/concurrent/java8/FuturesConvertersImplCompat.scala

@@ -1,3 +1,15 @@
+/*
+ * Scala (https://www.scala-lang.org)
+ *
+ * Copyright EPFL and Lightbend, Inc.
+ *
+ * Licensed under Apache License 2.0
+ * (http://www.apache.org/licenses/LICENSE-2.0).
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
 package scala.concurrent.java8
 
 import scala.concurrent.Future

src/test/java-2.11/scala/compat/java8/runtime/LambdaDeserializerTest.java

@@ -13,6 +13,7 @@
 package scala.compat.java8.runtime;
 
 import org.junit.Assert;
+import org.junit.Assume;
 import org.junit.Test;
 
 import java.io.Serializable;
@@ -26,26 +27,33 @@
 public final class LambdaDeserializerTest {
     private LambdaHost lambdaHost = new LambdaHost();
 
+    // We skip most tests on Java 17+ because of https://github.com/scala/bug/issues/12419
+    // which we only fixed for 2.12+
+
     @Test
     public void serializationPrivate() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F1<Boolean, String> f1 = lambdaHost.lambdaBackedByPrivateImplMethod();
         Assert.assertEquals(f1.apply(true), reconstitute(f1).apply(true));
     }
 
     @Test
     public void serializationStatic() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F1<Boolean, String> f1 = lambdaHost.lambdaBackedByStaticImplMethod();
         Assert.assertEquals(f1.apply(true), reconstitute(f1).apply(true));
     }
 
     @Test
     public void serializationVirtualMethodReference() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F1<Boolean, String> f1 = lambdaHost.lambdaBackedByVirtualMethodReference();
         Assert.assertEquals(f1.apply(true), reconstitute(f1).apply(true));
     }
 
     @Test
     public void serializationInterfaceMethodReference() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F1<I, Object> f1 = lambdaHost.lambdaBackedByInterfaceMethodReference();
         I i = new I() {
         };
@@ -54,18 +62,21 @@ public void serializationInterfaceMethodReference() {
 
     @Test
     public void serializationStaticMethodReference() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F1<Boolean, String> f1 = lambdaHost.lambdaBackedByStaticMethodReference();
         Assert.assertEquals(f1.apply(true), reconstitute(f1).apply(true));
     }
 
     @Test
     public void serializationNewInvokeSpecial() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F0<Object> f1 = lambdaHost.lambdaBackedByConstructorCall();
         Assert.assertEquals(f1.apply(), reconstitute(f1).apply());
     }
 
     @Test
     public void uncached() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         F0<Object> f1 = lambdaHost.lambdaBackedByConstructorCall();
         F0<Object> reconstituted1 = reconstitute(f1);
         F0<Object> reconstituted2 = reconstitute(f1);
@@ -74,6 +85,7 @@ public void uncached() {
 
     @Test
     public void cached() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         HashMap<String, MethodHandle> cache = new HashMap<>();
         F0<Object> f1 = lambdaHost.lambdaBackedByConstructorCall();
         F0<Object> reconstituted1 = reconstitute(f1, cache);
@@ -83,6 +95,7 @@ public void cached() {
 
     @Test
     public void cachedStatic() {
+        Assume.assumeFalse(scala.util.Properties.isJavaAtLeast("17"));
         HashMap<String, MethodHandle> cache = new HashMap<>();
         F1<Boolean, String> f1 = lambdaHost.lambdaBackedByStaticImplMethod();
         // Check that deserialization of a static lambda always returns the