Enable tests on CI

Reviewed-by: Alexandre Eher <alexandre.eher@werkspot.nl>
Signed-off-by: Jefersson Nathan <malukenho.dev@gmail.com>

.github/workflows/php.yml

@@ -14,6 +14,11 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: '7.4'
+
     - name: Validate composer.json and composer.lock
       run: composer validate --strict
 
@@ -22,3 +27,6 @@ jobs:
 
     - name: Run code style checker
       run: ./vendor/bin/phpcs
+
+    - name: Run tests
+      run: ./vendor/bin/phpunit

.xulieta.xml

@@ -2,5 +2,4 @@
 <xulieta xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="./vendor/codelicia/xulieta/xulieta.xsd">
     <validator>Codelicia\XulietaJson\JsonValidator</validator>
-    <validator>Codelicia\XulietaJson\JsonValidator</validator>
 </xulieta>

composer.json

@@ -8,7 +8,7 @@
         }
     },
     "require": {
-        "php": ">=7.4 || ~8.0"
+        "php": ">=7.4"
     },
     "require-dev": {
         "codelicia/xulieta": "1.0.x-dev as 1.0.0",