Add Github actions / Local environment (WordPress#240)

* Setup github workflow for testing.

* Remove Travis config

* Just run with PHP 7.4

* Run unit tests via the wp-env containers.

* Split install/setup/test steps

* Set the PHP version with the env vars

* Ignore composer.lock during unit test.

Author: dd32

.github/workflows/unit-test.yml

@@ -0,0 +1,33 @@
+name: Unit Tests
+
+on:
+  pull_request:
+  push:
+  workflow_dispatch:
+
+jobs:
+    test-php:
+      runs-on: ubuntu-latest
+      strategy:
+          fail-fast: false
+          matrix:
+              php:
+                - '7.4'
+
+      env:
+        WP_ENV_PHP_VERSION: ${{ matrix.php }}
+
+      steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install
+        run: npm install
+
+      - name: Setup Environment
+        run: |
+          rm composer.lock
+          npm run setup
+
+      - name: Test
+        run: npm run test

.gitignore

@@ -1,2 +1,3 @@
 vendor
 coverage
+node_modules

.travis.yml

@@ -0,0 +1,7 @@
+{
+  "phpVersion": "7.4",
+  "plugins": [
+    ".",
+    "https://downloads.wordpress.org/plugin/posts-to-posts.latest-stable.zip"
+  ]
+}