Add Github test workflow

.github/workflows/tests.yml

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+name: tests
+on:
+  pull_request:
+  push:
+    branches: [ main ]
+
+  schedule:
+  - cron: '25 07 * * *'
+
+  workflow_dispatch:
+    inputs:
+      debug_enabled:
+        description: 'Debug with tmate set "debug_enabled"'
+        required: false
+        default: "false"
+
+defaults:
+  run:
+    shell: bash
+
+# This is required for "gautamkrishnar/keepalive-workflow"
+permissions:
+  contents: write
+
+env:
+  NIGHTLY_DDEV_PR_URL: "https://nightly.link/ddev/ddev/actions/runs/1720215802/ddev-linux-amd64.zip"
+  # Allow ddev get to use a github token to prevent rate limiting by tests
+  DDEV_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+jobs:
+  tests:
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      matrix:
+        ddev_version: [stable, HEAD]
+#        ddev_version: [stable, edge, HEAD, P]
+      fail-fast: false
+
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Homebrew
+      id: set-up-homebrew
+      uses: Homebrew/actions/setup-homebrew@master
+    - name: Environment setup
+      run: |
+        brew install bats-core mkcert
+        mkcert -install
+
+    - name: Use ddev stable
+      if: matrix.ddev_version == 'stable'
+      run: brew install ddev/ddev/ddev
+
+    - name: Use ddev edge
+      if: matrix.ddev_version == 'edge'
+      run: brew install ddev/ddev-edge/ddev
+
+    - name: Use ddev HEAD
+      if: matrix.ddev_version == 'HEAD'
+      run: brew install --HEAD ddev/ddev/ddev
+
+    - name: Use ddev PR
+      if: matrix.ddev_version == 'PR'
+      run: |
+        curl -sSL -o ddev_linux.zip ${NIGHTLY_DDEV_PR_URL}
+        unzip ddev_linux.zip
+        mv ddev /usr/local/bin/ddev && chmod +x /usr/local/bin/ddev
+
+    - name: Download docker images
+      run: |
+        mkdir junk && pushd junk && ddev config --auto && ddev debug download-images >/dev/null && ddev delete -Oy junk
+    - name: tmate debugging session
+      uses: mxschmitt/action-tmate@v3
+      with:
+        limit-access-to-actor: true
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+      if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.debug_enabled }}
+
+    - name: tests
+      run: bats tests
+
+      # keepalive-workflow adds a dummy commit if there's no other action here, keeps
+      # GitHub from turning off tests after 60 days
+    - uses: gautamkrishnar/keepalive-workflow@v1
+      if: matrix.ddev_version == 'stable'

tests/test.bats

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+setup() {
+  set -eu -o pipefail
+  export DIR="$( cd "$( dirname "$BATS_TEST_FILENAME" )" >/dev/null 2>&1 && pwd )/.."
+  export TESTDIR=~/tmp/test-opensearch
+  mkdir -p $TESTDIR
+  export PROJECTNAME=test-opensearch
+  export ADDON_PATH="ddev/ddev-opensearch"
+  export USE_VERSION8=false
+  export DDEV_NON_INTERACTIVE=true
+  ddev delete -Oy ${PROJECTNAME} >/dev/null 2>&1 || true
+  cd ${TESTDIR} || ( printf "unable to cd to ${TESTDIR}\n" && exit 1 )
+  ddev config --project-name=${PROJECTNAME}
+  ddev start -y >/dev/null
+}
+
+execute_test() {
+  echo "# ddev get ${ADDON_PATH} with project ${PROJECTNAME} in ${TESTDIR} ($(pwd))" >&3
+  ddev get ${ADDON_PATH} >/dev/null
+  ddev restart >/dev/null
+  health_checks
+}
+
+health_checks() {
+  ddev exec "curl -s opensearch:9200" | grep "${PROJECTNAME}-opensearch"
+}
+
+teardown() {
+  ddev delete -Oy ${PROJECTNAME} >/dev/null 2>&1
+  [ "${TESTDIR}" != "" ] && rm -rf ${TESTDIR}
+}
+
+@test "install from directory" {
+  ADDON_PATH="${DIR}"
+  execute_test
+}
+
+@test "install from release" {
+  execute_test
+}