test: Add ModelConfigs unit tests

tests/php/tests/ModelConfigsTest.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Attributes\Validation\Tests;
+
+use Attributes\Validation\BaseModel;
+use Attributes\Validation\ModelConfigs;
+
+it('ModelConfigs attribute can be applied to a class', function () {
+    $model = new class extends BaseModel {};
+
+    // ModelConfigs should be applicable as an attribute
+    expect(true)->toBeTrue();
+});
+
+it('ModelConfigs has all required getter methods', function () {
+    $configs = new ModelConfigs();
+
+    expect(method_exists($configs, 'getAliasGenerator'))->toBeTrue();
+    expect(method_exists($configs, 'isStrToLower'))->toBeTrue();
+    expect(method_exists($configs, 'isStrToUpper'))->toBeTrue();
+    expect(method_exists($configs, 'isStripWhitespace'))->toBeTrue();
+    expect(method_exists($configs, 'getExtra'))->toBeTrue();
+    expect(method_exists($configs, 'isStrict'))->toBeTrue();
+    expect(method_exists($configs, 'isStopAtFirstError'))->toBeTrue();
+});
+
+it('ModelConfigs getter methods return expected types', function () {
+    $configs = new ModelConfigs();
+
+    expect($configs->getAliasGenerator())->toBeNull();
+    expect($configs->isStrToLower())->toBeBool();
+    expect($configs->isStrToUpper())->toBeBool();
+    expect($configs->isStripWhitespace())->toBeBool();
+    expect($configs->getExtra())->toBeString();
+    expect($configs->isStrict())->toBeBool();
+    expect($configs->isStopAtFirstError())->toBeBool();
+});
+
+it('ModelConfigs default values are correct', function () {
+    $configs = new ModelConfigs();
+
+    expect($configs->getAliasGenerator())->toBeNull();
+    expect($configs->isStrToLower())->toBeFalse();
+    expect($configs->isStrToUpper())->toBeFalse();
+    expect($configs->isStripWhitespace())->toBeFalse();
+    expect($configs->getExtra())->toBe('ignore');
+    expect($configs->isStrict())->toBeFalse();
+    expect($configs->isStopAtFirstError())->toBeFalse();
+});