Replace Travis with GH Actions

.github/workflows/testing.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+export GRADLE_OPTS="-Xms128m"
+
+./gradlew clean assemble -x signArchives test --tests com.google.protobuf.gradle.ProtobufJavaPluginTest --stacktrace
+./gradlew test --tests com.google.protobuf.gradle.ProtobufKotlinDslCopySpecTest --stacktrace
+./gradlew test --tests com.google.protobuf.gradle.ProtobufKotlinDslPluginTest --stacktrace
+./gradlew test --tests com.google.protobuf.gradle.ProtobufAndroidPluginTest --stacktrace
+./gradlew -stop
+./gradlew test --tests com.google.protobuf.gradle.ProtobufAndroidPluginKotlinTest --stacktrace
+./gradlew test --tests com.google.protobuf.gradle.AndroidProjectDetectionTest --stacktrace
+./gradlew codenarcMain || (cat ./build/reports/codenarc/main.txt && false)
+./gradlew codenarcTest || (cat ./build/reports/codenarc/test.txt && false)

.github/workflows/testing.yml

@@ -0,0 +1,25 @@
+name: GitHub Actions Linux Testing
+
+on:
+ push:
+ branches:
+ - master
+ pull_request:
+
+permissions:
+ contents: read
+
+jobs:
+ tests:
+ runs-on: ubuntu-latest
+
+ steps:
+ - uses: actions/checkout@v2
+ - uses: actions/setup-java@v2
+ with:
+ java-version: '8'
+ distribution: 'temurin'
+ cache: 'gradle'
+
+ - name: Build
+ run: .github/workflows/testing.sh