feat(Testing): Add ability to test models without Laravel framework

- Use MockModels trait and call mockModels() in setUp function
- Use ModelResourceTestCase to test model resources

src/Testing/PHPUnit/ModelResourceTestCase.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LaraStrict\Testing\PHPUnit;
+
+use Illuminate\Database\Eloquent\Model;
+use LaraStrict\Testing\PHPUnit\Traits\MockModels;
+
+/**
+ * @template TModel of Model
+ * @extends ResourceTestCase<TModel>
+ */
+abstract class ModelResourceTestCase extends ResourceTestCase
+{
+    use MockModels;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->mockModels();
+    }
+}

src/Testing/PHPUnit/Traits/MockModels.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace LaraStrict\Testing\PHPUnit\Traits;
+
+use Illuminate\Database\ConnectionResolverInterface;
+use Illuminate\Database\Eloquent\Model;
+use Mockery;
+
+trait MockModels
+{
+    public function mockModels(): void
+    {
+        // Resolve connection for all models
+        $resolver = Mockery::mock(ConnectionResolverInterface::class);
+        $resolver->shouldReceive('connection->getQueryGrammar->getDateFormat')
+            ->andReturn('Y-m-d H:i:s');
+
+        Model::setConnectionResolver($resolver);
+    }
+}

tests/Unit/Testing/PHPUnit/ModelResource.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\LaraStrict\Unit\Testing\PHPUnit;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+use Tests\LaraStrict\Feature\Database\Models\Test;
+
+/**
+ * @property Test $resource
+ */
+class ModelResource extends JsonResource
+{
+    public function __construct(?Test $resource)
+    {
+        parent::__construct($resource);
+    }
+
+    public function toArray($request): array
+    {
+        return [
+            'test' => $this->resource->test,
+        ];
+    }
+}

tests/Unit/Testing/PHPUnit/ModelResourceTestCaseTest.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\LaraStrict\Unit\Testing\PHPUnit;
+
+use Carbon\Carbon;
+use Illuminate\Http\Resources\Json\JsonResource;
+use LaraStrict\Testing\PHPUnit\ModelResourceTestCase;
+use Tests\LaraStrict\Feature\Database\Models\Test;
+
+/**
+ * @extends ModelResourceTestCase<Test>
+ */
+class ModelResourceTestCaseTest extends ModelResourceTestCase
+{
+    public function data(): array
+    {
+        return [
+            [
+                static fn (self $self) => $self->assert(
+                    object: self::create(value: 1),
+                    expected: self::expect(value: 1)
+                ),
+            ],
+            [
+                static fn (self $self) => $self->assert(
+                    object: self::create(value: 2),
+                    expected: self::expect(value: 2)
+                ),
+            ],
+        ];
+    }
+
+    protected function createResource(object $object): JsonResource
+    {
+        return new ModelResource($object);
+    }
+
+    private static function expect(int $value): array
+    {
+        return [
+            'test' => $value,
+        ];
+    }
+
+    private static function create(int $value): Test
+    {
+        $test = new Test();
+        $test->test = $value;
+        // Should trigger mock models
+        $test->deleted_at = Carbon::now();
+
+        return $test;
+    }
+}