Adding test

Author: weaverryan

src/DependentFieldConfig.php

@@ -30,6 +30,10 @@ public function __construct(
 
     public function isReady(array $availableDependencyData, string $eventName): bool
     {
+        if (!\array_key_exists($eventName, $this->callbackExecuted)) {
+            throw new \InvalidArgumentException(sprintf('Invalid event name "%s"', $eventName));
+        }
+
         if ($this->callbackExecuted[$eventName]) {
             return false;
         }

tests/DependentFieldConfigTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Symfonycasts\DynamicForms\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Form\FormEvents;
+use Symfonycasts\DynamicForms\DependentField;
+use Symfonycasts\DynamicForms\DependentFieldConfig;
+
+class DependentFieldConfigTest extends TestCase
+{
+    public function testIsReadyReturnsCorrectlyBasedOnDependencies(): void
+    {
+        $fieldConfig = new DependentFieldConfig('state', ['country'], fn () => null);
+        $this->assertFalse($fieldConfig->isReady([], FormEvents::PRE_SET_DATA));
+        $this->assertTrue($fieldConfig->isReady(['country' => 'United States'], FormEvents::PRE_SET_DATA));
+        $this->assertTrue($fieldConfig->isReady(['country' => 'United States'], FormEvents::POST_SUBMIT));
+        $this->assertTrue($fieldConfig->isReady(['country' => 'United States', 'extra' => 'field'], FormEvents::POST_SUBMIT));
+    }
+
+    public function testIsReadyReturnFalseIfCallbackExecuted(): void
+    {
+        $fieldConfig = new DependentFieldConfig('state', ['country'], fn () => null);
+        $this->assertTrue($fieldConfig->isReady(['country' => 'United States'], FormEvents::PRE_SET_DATA));
+        $fieldConfig->execute(['country' => 'United States'], FormEvents::PRE_SET_DATA);
+        $this->assertFalse($fieldConfig->isReady(['country' => 'United States'], FormEvents::PRE_SET_DATA));
+        $this->assertTrue($fieldConfig->isReady(['country' => 'United States'], FormEvents::POST_SUBMIT));
+    }
+
+    public function testExecuteCallsCallback(): void
+    {
+        $argsPassedToCallback = null;
+        $fieldConfig = new DependentFieldConfig('state', ['country', 'shouldHideRandomStates'], function ($configurableFormBuilder, $country, $shouldHideRandomStates) use (&$argsPassedToCallback) {
+            $argsPassedToCallback = [$configurableFormBuilder, $country, $shouldHideRandomStates];
+        });
+        $fieldConfig->execute(['country' => 'United States', 'shouldHideRandomStates' => true], FormEvents::PRE_SET_DATA);
+        $this->assertNotNull($argsPassedToCallback);
+        $this->assertInstanceOf(DependentField::class, $argsPassedToCallback[0]);
+        $this->assertSame('United States', $argsPassedToCallback[1]);
+        $this->assertTrue($argsPassedToCallback[2]);
+    }
+}