Add CI

.github/workflows/phpunit.yaml

@@ -0,0 +1,41 @@
+on:
+  pull_request:
+  push:
+
+name: "PHPUnit"
+
+jobs:
+  phpunit:
+    name: PHP ${{ matrix.php }}-${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+        php:
+          - "8.0"
+          - "8.1"
+          - "8.2"
+          - "8.3"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.3.4
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          tools: composer:v2
+          coverage: pcov
+
+      - name: Install dependencies
+        run: composer install
+
+      - name: Run tests with code coverage.
+        run: php -ddisable_functions=time vendor/bin/phpunit --coverage-clover=coverage.xml --colors=always
+
+      - name: Upload coverage to Codecov.
+        if: matrix.os == 'ubuntu-latest'
+        uses: codecov/codecov-action@v3
+        with:
+          files: ./coverage.xml

README.md

@@ -3,6 +3,10 @@
 The package helps mock internal php functions as simple as possible. Use this package when you need mock such
 functions as: `time()`, `str_contains()`, `rand`, etc.
 
+[![Latest Stable Version](https://poser.pugx.org/xepozz/internal-mocker/v/stable.svg)](https://packagist.org/packages/xepozz/internal-mocker)
+[![Total Downloads](https://poser.pugx.org/xepozz/internal-mocker/downloads.svg)](https://packagist.org/packages/xepozz/internal-mocker)
+[![phpunit](https://github.com/xepozz/internal-mocker/workflows/PHPUnit/badge.svg)](https://github.com/xepozz/internal-mocker/actions)
+
 ## Installation
 
 ```bash