Add GitHub Actions workflow for testing various configurations

This is to test that the tests pass as expected under various versions
of Perl both using XS and pure Perl installs.

Signed-off-by: Zakariyya Mughal <[email protected]>

Author: zmughal

.github/workflows/ci.yml

@@ -0,0 +1,100 @@
+name: Run Tests
+
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
+
+jobs:
+  dist:
+    name: Make distribution
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Cache ~/perl5
+        uses: actions/cache@v2
+        with:
+          key: ${{ runner.os }}-dist-locallib
+          path: ~/perl5
+      - name: Perl version
+        run: |
+          perl -v
+      - name: Install cpanm
+        run: |
+          curl -L https://cpanmin.us | perl - --sudo App::cpanminus
+      - name: Install local::lib
+        run: |
+          cpanm --local-lib=~/perl5 local::lib && eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
+      - name: Install author deps
+        shell: bash
+        run: |
+          eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
+          cpanm --notest --with-recommends --with-suggests Test::WriteVariants Config::AutoConf Carp inc::latest
+      - name: Make distribution
+        shell: bash
+        run: |
+          eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
+          perl Makefile.PL
+          make manifest dist DISTVNAME=dist
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: dist
+          path: ./dist.tar.gz
+  test:
+    needs: dist
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+        perl: ['5']
+        pureperl: [ false, true ]
+        include:
+          - { os: 'ubuntu-latest', perl: "5.34" }
+          - { os: 'ubuntu-latest', perl: "5.32" }
+          - { os: 'ubuntu-latest', perl: "5.30" }
+          - { os: 'ubuntu-latest', perl: "5.28" }
+          - { os: 'ubuntu-latest', perl: "5.26" }
+          - { os: 'ubuntu-latest', perl: "5.24" }
+          - { os: 'ubuntu-latest', perl: "5.22" }
+          - { os: 'ubuntu-latest', perl: "5.20" }
+          - { os: 'ubuntu-latest', perl: "5.18" }
+          - { os: 'ubuntu-latest', perl: "5.16" }
+          - { os: 'ubuntu-latest', perl: "5.14" }
+          - { os: 'ubuntu-latest', perl: "5.12" }
+          - { os: 'ubuntu-latest', perl: "5.10" }
+          - { os: 'ubuntu-latest', perl: "5.8"  }
+          - { os: 'ubuntu-latest', perl: "5"   , pureperl: true, force_cc_fail: true }
+    name: Perl ${{ matrix.perl }} on ${{ matrix.os }} (${{ format('{0}, {1}', fromJSON('["","pureperl"]')[matrix.pureperl], fromJSON('["","force cc failure"]')[matrix.force_cc_fail]) }})
+
+    steps:
+      - name: Get dist artifact
+        uses: actions/download-artifact@v2
+        with:
+          name: dist
+
+      - name: Set up perl
+        uses: shogo82148/actions-setup-perl@v1
+        if: matrix.os != 'windows-latest'
+        with:
+          perl-version: ${{ matrix.perl }}
+      - name: Set up perl (Strawberry)
+        uses: shogo82148/actions-setup-perl@v1
+        if: matrix.os == 'windows-latest'
+        with:
+          distribution: 'strawberry'
+
+      - run: perl -V
+
+      - name: Install Perl deps
+        run: |
+          cpanm --notest --installdeps dist.tar.gz
+
+      - name: Run tests
+        run:
+          cpanm --verbose --test-only
+              ${{ fromJSON('[ "", "--pureperl" ]')[ matrix.pureperl ] }}
+              ${{ fromJSON('[ "", "--build-args=\"CC=false\"" ]')[ matrix.force_cc_fail ] }}
+              dist.tar.gz