Fixed array for data collections bug

src/SpatieLaravelData/Rules/ValidTypeRule.php

@@ -10,6 +10,7 @@
 use PHPStan\Rules\RuleErrorBuilder;
 use PHPStan\ShouldNotHappenException;
 use Cego\phpstan\TypeSystem\UnionType;
+use Spatie\LaravelData\DataCollection;
 use Cego\phpstan\TypeSystem\TypeSystem;
 use Cego\phpstan\SpatieLaravelData\Data\Call;
 use Cego\phpstan\SpatieLaravelData\Data\Constructor;
@@ -180,7 +181,9 @@ public static function getErrorMessage(string $property, string $class, string $
      */
     private function expectedTypesMatchesExactlyCast(array $casts, UnionType $expectedTypes): bool
     {
-        foreach ($casts as $castType) {
+        $systemCasts = [UnionType::fromString(DataCollection::class)];
+
+        foreach ([...$casts, ...$systemCasts] as $castType) {
             if (TypeSystem::isSubtypeOf($expectedTypes, $castType)) {
                 return true;
             }

test/Samples/DataCollectionSpatieLaravelData.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Test\Samples;
+
+use Spatie\LaravelData\Data;
+use Spatie\LaravelData\DataCollection;
+use Test\Samples\Enum\BackedEnumExample;
+
+class DataCollectionSpatieLaravelData extends Data
+{
+    /**
+     * @param DataCollection<int, BackedEnumExample> $collectionProperty
+     */
+    public function __construct(
+        public readonly DataCollection $collectionProperty,
+    ) {
+    }
+
+    public function initDefault(): self
+    {
+        return self::from(
+            [
+                'collectionProperty' => [],
+            ],
+        );
+    }
+}

test/SpatieLaravelData/ValidTypeRuleTest.php

@@ -100,6 +100,14 @@ public function it_does_not_care_about_generics(): void
         ], []);
     }
 
+    /** @test */
+    public function it_accepts_arrays_for_data_collections(): void
+    {
+        $this->analyse([
+            __DIR__ . '/../Samples/DataCollectionSpatieLaravelData.php',
+        ], []);
+    }
+
     private function expectError(int $line, string $property, string $class, string $expectedType, string $actualType): array
     {
         return [