Add code coverage report script

Author: hamidgh83

.gitignore

@@ -1,3 +1,4 @@
 *.cache
 vendor/
-*.lock
+*.lock
+coverage/

README.md

@@ -139,6 +139,12 @@ Run your tests to verify that slugs are generated as expected:
 composer test
 ```
 
+Run code coverage analysis to generate a coverage report. This will generate a coverage report in the `coverage` directory.
+
+```bash
+composer coverage
+```
+
 Run PHPStan to check for potential issues in the code:
 
 ```bash

composer.json

@@ -34,7 +34,8 @@
     "scripts": {
         "phpcs-fix": "./vendor/bin/php-cs-fixer fix ",
         "phpstan": "./vendor/bin/phpstan analyse --memory-limit=-1 src/",
-        "test": "./vendor/bin/phpunit --testdox"
+        "test": "./vendor/bin/phpunit --testdox",
+        "coverage": "./vendor/bin/phpunit --coverage-html coverage/"
     },
     "config": {
         "sort-packages": true

phpunit.xml

@@ -10,4 +10,9 @@
         <env name="DB_CONNECTION" value="sqlite"/>
         <env name="DB_DATABASE" value=":memory:"/>
     </php>
+    <source>
+        <include>
+            <directory suffix=".php">src/</directory>
+        </include>
+    </source>
 </phpunit>