[Store] Add InMemoryLoader for testing purposes

src/store/src/Document/Loader/InMemoryLoader.php

@@ -0,0 +1,34 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\AI\Store\Document\Loader;
+
+use Symfony\AI\Store\Document\LoaderInterface;
+use Symfony\AI\Store\Document\TextDocument;
+
+/**
+ * @author Oskar Stark <oskarstark@googlemail.com>
+ */
+final readonly class InMemoryLoader implements LoaderInterface
+{
+    /**
+     * @param array<TextDocument> $documents
+     */
+    public function __construct(
+        private array $documents = [],
+    ) {
+    }
+
+    public function load(string $source, array $options = []): iterable
+    {
+        yield from $this->documents;
+    }
+}

src/store/tests/Document/Loader/InMemoryLoaderTest.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\AI\Store\Tests\Document\Loader;
+
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+use Symfony\AI\Store\Document\Loader\InMemoryLoader;
+use Symfony\AI\Store\Document\Metadata;
+use Symfony\AI\Store\Document\TextDocument;
+use Symfony\Component\Uid\Uuid;
+
+/**
+ * @author Oskar Stark <oskarstark@googlemail.com>
+ */
+#[CoversClass(InMemoryLoader::class)]
+final class InMemoryLoaderTest extends TestCase
+{
+    public function testLoadWithEmptyDocuments()
+    {
+        $loader = new InMemoryLoader();
+        $documents = iterator_to_array($loader->load('ignored-source'));
+
+        $this->assertEmpty($documents);
+    }
+
+    public function testLoadWithSingleDocument()
+    {
+        $document = new TextDocument(Uuid::v4(), 'This is test content');
+        $loader = new InMemoryLoader([$document]);
+
+        $documents = iterator_to_array($loader->load('ignored-source'));
+
+        $this->assertCount(1, $documents);
+        $this->assertSame($document, $documents[0]);
+        $this->assertSame('This is test content', $documents[0]->content);
+    }
+
+    public function testLoadWithMultipleDocuments()
+    {
+        $document1 = new TextDocument(Uuid::v4(), 'First document');
+        $document2 = new TextDocument(Uuid::v4(), 'Second document', new Metadata(['type' => 'test']));
+        $loader = new InMemoryLoader([$document1, $document2]);
+
+        $documents = iterator_to_array($loader->load('ignored-source'));
+
+        $this->assertCount(2, $documents);
+        $this->assertSame($document1, $documents[0]);
+        $this->assertSame($document2, $documents[1]);
+        $this->assertSame('First document', $documents[0]->content);
+        $this->assertSame('Second document', $documents[1]->content);
+        $this->assertSame('test', $documents[1]->metadata['type']);
+    }
+
+    public function testLoadIgnoresSourceParameter()
+    {
+        $document = new TextDocument(Uuid::v4(), 'test content');
+        $loader = new InMemoryLoader([$document]);
+
+        $documents1 = iterator_to_array($loader->load('source1'));
+        $documents2 = iterator_to_array($loader->load('source2'));
+        $documents3 = iterator_to_array($loader->load('any-source'));
+
+        $this->assertCount(1, $documents1);
+        $this->assertCount(1, $documents2);
+        $this->assertCount(1, $documents3);
+        $this->assertSame($document, $documents1[0]);
+        $this->assertSame($document, $documents2[0]);
+        $this->assertSame($document, $documents3[0]);
+    }
+}