diff --git a/.github/workflows/moodle-plugin-ci.yml b/.github/workflows/moodle-plugin-ci.yml
new file mode 100644
index 0000000..c56cf92
--- /dev/null
+++ b/.github/workflows/moodle-plugin-ci.yml
@@ -0,0 +1,115 @@
+name: Moodle plugin CI
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php: ['7.4', '8.0']
+        moodle-branch: ['MOODLE_311_STABLE', 'MOODLE_400_STABLE', 'MOODLE_401_STABLE', 'master']
+        database: ['mariadb', 'pgsql']
+
+    services:
+      postgres:
+        image: postgres:14
+        env:
+          POSTGRES_USER: 'postgres'
+          POSTGRES_HOST_AUTH_METHOD: 'trust'
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 3
+        ports:
+          - 5432:5432
+
+      mariadb:
+        image: mariadb:10.5
+        env:
+          MYSQL_USER: 'root'
+          MYSQL_ALLOW_EMPTY_PASSWORD: "true"
+          MYSQL_CHARACTER_SET_SERVER: "utf8mb4"
+          MYSQL_COLLATION_SERVER: "utf8mb4_unicode_ci"
+        ports:
+          - 3306:3306
+        options: --health-cmd="mysqladmin ping" --health-interval 10s --health-timeout 5s --health-retries 3
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          path: plugin
+
+      - name: Setup PHP ${{ matrix.php }}
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: ${{ matrix.extensions }}
+          ini-values: max_input_vars=5000
+          coverage: none
+
+      - name: Deploy moodle-plugin-ci
+        run: |
+          composer create-project -n --no-dev --prefer-dist moodlehq/moodle-plugin-ci ci ^3
+          # Add dirs to $PATH
+          echo $(cd ci/bin; pwd) >> $GITHUB_PATH
+          echo $(cd ci/vendor/bin; pwd) >> $GITHUB_PATH
+          # PHPUnit depends on en_AU.UTF-8 locale
+          sudo locale-gen en_AU.UTF-8
+          echo "NVM_DIR=$HOME/.nvm" >> $GITHUB_ENV
+
+      - name: Install Moodle
+        # Need explicit IP to stop mysql client fail on attempt to use unix socket.
+        run: moodle-plugin-ci install --plugin ./plugin --db-host=127.0.0.1
+        env:
+          DB: ${{ matrix.database }}
+          MOODLE_BRANCH: ${{ matrix.moodle-branch }}
+          IGNORE_PATHS: 'templates/local/mobile'
+
+      - name: PHP Lint
+        if: ${{ always() }}
+        run: moodle-plugin-ci phplint
+
+      - name: PHP Copy/Paste Detector
+        continue-on-error: true # This step will show errors but will not fail
+        if: ${{ always() }}
+        run: moodle-plugin-ci phpcpd
+
+      - name: PHP Mess Detector
+        continue-on-error: true # This step will show errors but will not fail
+        if: ${{ always() }}
+        run: moodle-plugin-ci phpmd
+
+      - name: Moodle Code Checker
+        if: ${{ always() }}
+        run: moodle-plugin-ci codechecker
+
+      - name: Moodle PHPDoc Checker
+        if: ${{ always() }}
+        run: moodle-plugin-ci phpdoc
+
+      - name: Validating
+        if: ${{ always() }}
+        run: moodle-plugin-ci validate
+
+      - name: Check upgrade savepoints
+        if: ${{ always() }}
+        run: moodle-plugin-ci savepoints
+
+      - name: Mustache Lint
+        if: ${{ always() }}
+        run: moodle-plugin-ci mustache
+
+      - name: Grunt
+        if: ${{ always() }}
+        run: moodle-plugin-ci grunt --max-lint-warnings 0
+
+      - name: PHPUnit tests
+        if: ${{ always() }}
+        run: moodle-plugin-ci phpunit
+
+      - name: Behat features
+        if: ${{ always() }}
+        run: moodle-plugin-ci behat --profile chrome
diff --git a/README.md b/README.md
index b53f9c8..a7ec0c9 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,13 @@
-# To Install it manually #
+moodle-filter_multilang2
+========================
+
+
+[![Latest Release](https://img.shields.io/github/v/release/iarenaza/moodle-filter_multilang2?sort=semver&color=orange)](https://github.com/iarenaza/moodle-filter_multilang2/releases)
+[![Moodle Plugin 
+CI](https://github.com/iarenaza/moodle-filter_multilang2/workflows/Moodle%20plugin%20CI/badge.svg?branch=master)](https://github.com/iarenaza/moodle-filter_multilang2/actions?query=workflow%3A%22Moodle+plugin+CI%22+branch%3Amaster)
+
+# 
+To Install it manually #
 - Unzip the plugin in the moodle .../filter/ directory.
 
 # To Enable it #
diff --git a/classes/privacy/provider.php b/classes/privacy/provider.php
index f16f472..315cb52 100644
--- a/classes/privacy/provider.php
+++ b/classes/privacy/provider.php
@@ -25,8 +25,6 @@
 
 namespace filter_multilang2\privacy;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Privacy Subsystem for filter_multilang2 implementing null_provider.
  *
diff --git a/filter.php b/filter.php
index 1f27a60..4d5972f 100644
--- a/filter.php
+++ b/filter.php
@@ -24,8 +24,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Given multilinguage text, return relevant text according to current language.
  *
diff --git a/tests/filter_test.php b/tests/filter_test.php
index 42ced2f..0ebff4f 100644
--- a/tests/filter_test.php
+++ b/tests/filter_test.php
@@ -26,6 +26,10 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+namespace filter_multilang2;
+
+use filter_multilang2;
+
 defined('MOODLE_INTERNAL') || die();
 
 global $CFG;
@@ -42,8 +46,9 @@
  * @copyright  2014 Damyon Wiese
  * @copyright  2016 Iñaki Arenaza & Mondragon Unibertsitatea
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers     filter_multilang2
  */
-class filter_multilang2_testcase extends advanced_testcase {
+class filter_test extends \advanced_testcase {
 
     /** @var object The filter plugin object to perform the tests on */
     protected $filter;
@@ -56,7 +61,7 @@ class filter_multilang2_testcase extends advanced_testcase {
     protected function setUp():void {
         parent::setUp();
         $this->resetAfterTest(true);
-        $this->filter = new filter_multilang2(context_system::instance(), array());
+        $this->filter = new filter_multilang2(\context_system::instance(), array());
     }
 
     /**