Add Java 21 to CI test (RustedBones#128)

Author: RustedBones

.github/workflows/ci.yml

@@ -29,8 +29,10 @@ jobs:
       matrix:
         os: [ubuntu-22.04]
         scala: [3, 2.13]
-        java: [temurin@17, temurin@11]
+        java: [temurin@21, temurin@17, temurin@11]
         exclude:
+          - scala: 2.13
+            java: temurin@17
           - scala: 2.13
             java: temurin@11
     runs-on: ${{ matrix.os }}
@@ -44,6 +46,19 @@ jobs:
       - name: Setup sbt
         uses: sbt/setup-sbt@v1
 
+      - name: Setup Java (temurin@21)
+        id: setup-java-temurin-21
+        if: matrix.java == 'temurin@21'
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@21' && steps.setup-java-temurin-21.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@17)
         id: setup-java-temurin-17
         if: matrix.java == 'temurin@17'
@@ -74,18 +89,18 @@ jobs:
         run: sbt githubWorkflowCheck
 
       - name: Check headers and formatting
-        if: matrix.java == 'temurin@17' && matrix.os == 'ubuntu-22.04'
+        if: matrix.java == 'temurin@21' && matrix.os == 'ubuntu-22.04'
         run: sbt '++ ${{ matrix.scala }}' headerCheckAll scalafmtCheckAll 'project /' scalafmtSbtCheck
 
       - name: Test
         run: sbt '++ ${{ matrix.scala }}' test
 
       - name: Check binary compatibility
-        if: matrix.java == 'temurin@17' && matrix.os == 'ubuntu-22.04'
+        if: matrix.java == 'temurin@21' && matrix.os == 'ubuntu-22.04'
         run: sbt '++ ${{ matrix.scala }}' mimaReportBinaryIssues
 
       - name: Generate API documentation
-        if: matrix.java == 'temurin@17' && matrix.os == 'ubuntu-22.04'
+        if: matrix.java == 'temurin@21' && matrix.os == 'ubuntu-22.04'
         run: sbt '++ ${{ matrix.scala }}' doc
 
       - name: Make target directories
@@ -110,7 +125,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04]
-        java: [temurin@17]
+        java: [temurin@21]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
@@ -121,6 +136,19 @@ jobs:
       - name: Setup sbt
         uses: sbt/setup-sbt@v1
 
+      - name: Setup Java (temurin@21)
+        id: setup-java-temurin-21
+        if: matrix.java == 'temurin@21'
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@21' && steps.setup-java-temurin-21.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@17)
         id: setup-java-temurin-17
         if: matrix.java == 'temurin@17'
@@ -197,7 +225,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-22.04]
-        java: [temurin@17]
+        java: [temurin@21]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
@@ -208,6 +236,19 @@ jobs:
       - name: Setup sbt
         uses: sbt/setup-sbt@v1
 
+      - name: Setup Java (temurin@21)
+        id: setup-java-temurin-21
+        if: matrix.java == 'temurin@21'
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          cache: sbt
+
+      - name: sbt update
+        if: matrix.java == 'temurin@21' && steps.setup-java-temurin-21.outputs.cache-hit == 'false'
+        run: sbt +update
+
       - name: Setup Java (temurin@17)
         id: setup-java-temurin-17
         if: matrix.java == 'temurin@17'

build.sbt

@@ -25,14 +25,15 @@ val scala213     = "2.13.16"
 val defaultScala = scala3
 
 // github actions
+val java21      = JavaSpec.temurin("21")
 val java17      = JavaSpec.temurin("17")
 val java11      = JavaSpec.temurin("11")
-val defaultJava = java17
+val defaultJava = java21
 
 ThisBuild / scalaVersion                 := defaultScala
 ThisBuild / crossScalaVersions           := Seq(scala3, scala213)
 ThisBuild / githubWorkflowTargetBranches := Seq("main")
-ThisBuild / githubWorkflowJavaVersions   := Seq(java17, java11)
+ThisBuild / githubWorkflowJavaVersions   := Seq(java21, java17, java11)
 
 // build
 ThisBuild / tlFatalWarnings         := true