replace Travis-CI with GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,69 @@
+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]
+        platform: [jvm, js, native]
+        mode: [normal]
+        exclude:
+          - scala: 3.0.2
+            platform: native
+          - java: 11
+            platform: js
+          - java: 11
+            platform: native
+          - java: 17
+            platform: js
+          - java: 17
+            platform: native
+        include:
+          - java: 8
+            scala: 2.12.15
+            mode: testScalafix
+            platform: jvm
+          - java: 8
+            scala: 2.12.15
+            mode: testBinaryCompat
+            platform: jvm
+          - java: 8
+            scala: 2.12.15
+            mode: testScalafmt
+            platform: jvm
+          - java: 8
+            scala: 2.12.15
+            mode: headerCheck
+            platform: jvm
+          - java: 11
+            scala: 2.12.15
+            mode: normal
+            platform: jvm
+          - java: 17
+            scala: 2.12.15
+            mode: normal
+            platform: jvm
+    runs-on: ubuntu-latest
+    env:
+      CI_JDK: ${{matrix.java}}
+      CI_SCALA_VERSION: ${{matrix.scala}}
+      CI_MODE: ${{matrix.mode}}
+      CI_PLATFORM: ${{matrix.platform}}
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - uses: coursier/cache-action@v6
+    - uses: actions/setup-java@v2
+      with:
+        distribution: temurin
+        java-version: ${{matrix.java}}
+    - name: ci
+      run: sbt ci

build.sbt

@@ -291,14 +291,15 @@ lazy val scalafixTests = project
   .dependsOn(scalafixInput, scalafixRules)
   .enablePlugins(BuildInfoPlugin, ScalafixTestkitPlugin)
 
-val travisScalaVersion = sys.env.get("TRAVIS_SCALA_VERSION").flatMap(Version.parse)
-val isTravisTag        = sys.env.get("TRAVIS_TAG").exists(_.nonEmpty)
-val isScalaJs          = sys.env.get("SCALAJS_VERSION").exists(_.nonEmpty)
-val isScalaNative      = sys.env.get("SCALANATIVE_VERSION").exists(_.nonEmpty)
-val isScalafix         = sys.env.get("TEST_SCALAFIX").nonEmpty
-val isScalafmt         = sys.env.get("TEST_SCALAFMT").nonEmpty
-val isBinaryCompat     = sys.env.get("TEST_BINARY_COMPAT").nonEmpty
-val jdkVersion         = sys.env.get("ADOPTOPENJDK").map(_.toInt)
+val ciScalaVersion     = sys.env.get("CI_SCALA_VERSION").flatMap(Version.parse)
+val isTravisTag        = sys.env.get("CI_TAG").exists(_.nonEmpty)
+val isScalaJs          = sys.env.get("CI_PLATFORM") == Some("js")
+val isScalaNative      = sys.env.get("CI_PLATFORM") == Some("native")
+val isScalafix         = sys.env.get("CI_MODE") == Some("testScalafix")
+val isScalafmt         = sys.env.get("CI_MODE") == Some("testScalafmt")
+val isBinaryCompat     = sys.env.get("CI_MODE") == Some("testBinaryCompat")
+val isHeaderCheck      = sys.env.get("CI_MODE") == Some("headerCheck")
+val jdkVersion         = sys.env.get("CI_JDK").map(_.toInt)
 
 // required by sbt-scala-module
 inThisBuild {
@@ -314,23 +315,23 @@ inThisBuild {
     },
     commands += Command.command("ci") { state =>
       val toRun: Seq[String] =
-        if (isScalafmt) {
+        if (isScalafmt)
           Seq("scalafmtTest")
-        } else {
+        else if (isHeaderCheck)
+          Seq("headerCheck")
+        else {
           List(
-            "TRAVIS_SCALA_VERSION",
-            "TRAVIS_TAG",
-            "SCALAJS_VERSION",
-            "SCALANATIVE_VERSION",
-            "TEST_SCALAFIX",
-            "TEST_SCALAFMT",
-            "TEST_BINARY_COMPAT"
+            "CI_SCALA_VERSION",
+            "CI_TAG",
+            "CI_PLATFORM",
+            "CI_MODE",
+            "CI_JDK",
           ).foreach(k =>
             println(k.padTo(20, " ").mkString("") + " -> " + sys.env.getOrElse(k, "None")))
 
           val platformSuffix = if (isScalaJs) "JS" else if (isScalaNative) "Native" else ""
 
-          val compatProject       = "compat" + travisScalaVersion.get.binary + platformSuffix
+          val compatProject       = "compat" + ciScalaVersion.get.binary + platformSuffix
           val binaryCompatProject = "binaryCompat"
 
           val testProjectPrefix =
@@ -371,11 +372,10 @@ inThisBuild {
             }
 
           Seq(
-            List(s"""++${sys.env.get("TRAVIS_SCALA_VERSION").get}!"""),
+            List(s"""++${sys.env.get("CI_SCALA_VERSION").get}!"""),
             List(s"$projectPrefix/clean"),
             List(s"$testProjectPrefix/test"),
             List(s"$projectPrefix/publishLocal"),
-            List("headerCheck"),
             publishTask
           ).flatten
         }