Add lint check for class autoloading PSR compliance

Author: crocodele

.github/workflows/lint.yml

@@ -36,3 +36,7 @@ jobs:
       - name: "Lint PHP files"
         run: |
           parallel-lint . --checkstyle --exclude vendor --show-deprecated | cs2pr
+
+      - name: "Validate conforming class autoloading"
+        run: |
+          composer dump-autoload --no-dev --optimize --strict-psr --strict-ambiguous

tests/Tool/Validator/RelativeReferenceValidatorTest.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Tool\Validator;
+namespace JsonSchema\Tests\Tool\Validator;
 
 use JsonSchema\Tool\Validator\RelativeReferenceValidator;
 use PHPUnit\Framework\TestCase;

tests/Tool/Validator/UriValidatorTest.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Tool\Validator;
+namespace JsonSchema\Tests\Tool\Validator;
 
 use JsonSchema\Tool\Validator\UriValidator;
 use PHPUnit\Framework\TestCase;