Add github actions

.github/workflows/build.yml

@@ -0,0 +1,42 @@
+name: build
+
+on: push
+
+jobs:
+  build:
+    runs-on: macOS-latest
+
+    strategy:
+      fail-fast: false
+
+      matrix:
+        emacs-version:
+          - '26.1'
+          - '26.2'
+          - '26.3'
+          - 'snapshot'
+        include:
+          - emacs-version: snapshot
+            allow_failure: true
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+
+      - name: Setup GNU Emacs
+        uses: purcell/setup-emacs@master
+        with:
+          version: ${{ matrix:emacs-version }}
+
+      - name: Run tests
+        if: matrix.allow_failure != true
+        run: ln -s $GITHUB_WORKSPACE $HOME/.emacs.d && ./run-tests.sh --debug
+
+      - name: Run tests (snapshot)
+        if: matrix.allow_failure == true
+        run: ln -s $GITHUB_WORKSPACE $HOME/.emacs.d && (./run-tests.sh --debug || true)
+
+      - name: Run Shell script analyzis tool
+        run: shellcheck ./run-tests.sh

run-tests.sh

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+#!/bin/sh -eu
+
+echo "Emacs initial startup..."
+
+EMACS=${EMACS:-emacs}
+
+command -v "$EMACS" >/dev/null || {
+  >&2 echo "Can't find GNU Emacs in your PATH"
+  exit 1
+}
+
+[ -n "${1-}" ] && {
+  [ "$1" = -d ] || [ "$1" = --debug ] && {
+    shift
+    export DEBUG=1
+  }
+}
+
+${EMACS} \
+  --no-window-system \
+  --batch \
+  --eval '(let ((debug-on-error t)
+                (url-show-status nil)
+                (user-emacs-directory default-directory)
+                (package-user-dir (expand-file-name (concat "elpa-" emacs-version)))
+                (user-init-file (expand-file-name "init.el"))
+                (load-path (delq default-directory load-path)))
+          (load-file user-init-file)
+          (run-hooks (quote after-init-hook)))'
+
+echo "Startup successful!"