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Merged
akarnokd merged 11 commits into from
Mar 25, 2026
+86 −12
Merged

4.x: Add optional build/test for future JDKs #8077

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95412e8
4.x: Add optional build/test for future JDKs
akarnokd Mar 25, 2026
9b6fb3f
try temurin builds
akarnokd Mar 25, 2026
7a0dda4
use toolchain override
akarnokd Mar 25, 2026
97fe184
Run Gradle on 26, invoke toolchain for 27
akarnokd Mar 25, 2026
ffc6185
Minor log fix
akarnokd Mar 25, 2026
4d6d31b
hope gradle runs on 26
akarnokd Mar 25, 2026
748b186
Don't run jacoco on EA as it breaks its assembly parser
akarnokd Mar 25, 2026
e83b903
another attempt at running Gradle on 26 and code on 27
akarnokd Mar 25, 2026
561a113
Fix jacoco again
akarnokd Mar 25, 2026
7fa6cd9
fix java home
akarnokd Mar 25, 2026
ea55e55
No jacoco for experimentals
akarnokd Mar 25, 2026
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63 changes: 63 additions & 0 deletions .github/workflows/gradle_preview_jdks.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,63 @@
# This workflow will build a Java project with Gradle
# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle

name: Preview-JDKs

on:
push:
branches: [ '4.x' ]
pull_request:
branches: [ '4.x' ]

permissions:
contents: read

jobs:
build:
runs-on: ubuntu-latest
continue-on-error: true
strategy:
fail-fast: false
matrix:
jdk: [27] # add 28-ea etc. later

steps:
- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
- name: Set up JDK 26
uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
with:
distribution: 'zulu'
java-version: '26'
cache: gradle

- name: Set up JDK ${{ matrix.jdk }}-ea
uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
with:
distribution: 'temurin'
java-version: '${{ matrix.jdk }}-ea'

- name: Cache Gradle packages
uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
with:
path: ~/.gradle/caches
key: ${{ runner.os }}-gradle-${{ secrets.CACHE_VERSION }}-${{ hashFiles('**/*.gradle') }}
restore-keys: ${{ runner.os }}-gradle-${{ secrets.CACHE_VERSION }}
- name: Grant execute permission for gradlew
run: chmod +x gradlew

- name: Run Validity Tests Upfront
env:
JDK_EXPERIMENTAL: ${{ matrix.jdk }}
JAVA_HOME: ${{ env.JAVA_HOME_26_X64 }}
run: ./gradlew test --tests "io.reactivex.rxjava4.validators.*" --stacktrace --no-daemon
- name: Build RxJava
env:
JDK_EXPERIMENTAL: ${{ matrix.jdk }}
JAVA_HOME: ${{ env.JAVA_HOME_26_X64 }}
run: ./gradlew build --stacktrace
- name: Generate Javadoc
env:
JDK_EXPERIMENTAL: ${{ matrix.jdk }}
JAVA_HOME: ${{ env.JAVA_HOME_26_X64 }}
run: ./gradlew javadoc --stacktrace

35 changes: 23 additions & 12 deletions build.gradle
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Expand Up @@ -3,7 +3,6 @@ plugins {
id("java-library")
id("checkstyle")
id("eclipse")
id("jacoco")
id("maven-publish")
id("me.champeau.jmh") version "0.7.3"
id("com.github.hierynomus.license") version "0.16.1"
Expand Down Expand Up @@ -54,10 +53,17 @@ dependencies {
testRuntimeOnly "org.junit.platform:junit-platform-launcher:$jupiterLauncherVersion" // match your JUnit version family
}

// === Experimental JDK handling for Outreach Program ===
def experimental = System.getenv("JDK_EXPERIMENTAL")
def toolchainJdk = "26" // default / baseline

if (experimental != null && !experimental.trim().isEmpty()) {
toolchainJdk = experimental // e.g. "27"
}

java {
toolchain {
// vendor = JvmVendorSpec.ADOPTIUM <-- for now
languageVersion = JavaLanguageVersion.of(26)
languageVersion = JavaLanguageVersion.of(toolchainJdk)
}
sourceCompatibility = JavaVersion.VERSION_26
targetCompatibility = JavaVersion.VERSION_26
Expand Down Expand Up @@ -256,18 +262,23 @@ tasks.withType(Test) {
}
}

jacocoTestReport {
dependsOn test
dependsOn testNG

reports {
xml.required.set(true)
csv.required.set(false)
html.required.set(true)
if (experimental == null || "".equals(experimental)) {
apply plugin: "jacoco"

jacocoTestReport {
dependsOn test
dependsOn testNG

reports {
xml.required.set(true)
csv.required.set(false)
html.required.set(true)
}
}

check.dependsOn jacocoTestReport
}

check.dependsOn jacocoTestReport

checkstyle {
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akarnokd marked this conversation as resolved.
configFile = project.file("config/checkstyle/checkstyle.xml")
Expand Down