Add contracts tests

Author: SerafimArts

composer.json

@@ -26,8 +26,14 @@
         }
     },
     "require-dev": {
+        "phpunit/phpunit": "^10.5|^11.0",
         "vimeo/psalm": "^5.21"
     },
+    "autoload-dev": {
+        "psr-4": {
+            "Phplrt\\Contracts\\Exception\\Tests\\": "tests"
+        }
+    },
     "extra": {
         "branch-alias": {
             "dev-master": "4.x-dev",

phpunit.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+         colors="true"
+         backupGlobals="true"
+         stopOnFailure="false"
+         processIsolation="false"
+         bootstrap="vendor/autoload.php"
+         cacheDirectory="vendor/.phpunit.cache"
+         backupStaticProperties="false"
+>
+    <testsuites>
+        <testsuite name="unit">
+            <directory>tests</directory>
+        </testsuite>
+    </testsuites>
+
+    <coverage/>
+
+    <source>
+        <include>
+            <directory suffix=".php">src</directory>
+        </include>
+    </source>
+
+    <php>
+        <ini name="error_reporting" value="-1"/>
+        <ini name="memory_limit" value="-1"/>
+    </php>
+</phpunit>

tests/CompatibilityTest.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Phplrt\Contracts\Exception\Tests;
+
+use Phplrt\Contracts\Exception\RuntimeExceptionInterface;
+use Phplrt\Contracts\Lexer\TokenInterface;
+use Phplrt\Contracts\Source\ReadableInterface;
+use PHPUnit\Framework\Attributes\Group;
+
+#[Group('phplrt/exception-contracts')]
+class CompatibilityTest extends TestCase
+{
+    public function testRuntimeExceptionCompatibility(): void
+    {
+        self::expectNotToPerformAssertions();
+
+        new class extends \Exception implements RuntimeExceptionInterface {
+            public function getToken(): TokenInterface {}
+            public function getSource(): ReadableInterface {}
+        };
+    }
+}

tests/TestCase.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Phplrt\Contracts\Exception\Tests;
+
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+#[Group('phplrt/exception-contracts')]
+abstract class TestCase extends BaseTestCase {}