Added user and organization deletion system; Added coverage annotations

tests/Unit/Service/Import/Importers/ImporterProviderTest.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Service\Import\Importers;
+
+use App\Service\Import\Importers\ClockifyProjectsImporter;
+use App\Service\Import\Importers\ImporterProvider;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\UsesClass;
+use Tests\TestCase;
+
+#[CoversClass(ImporterProvider::class)]
+#[UsesClass(ImporterProvider::class)]
+class ImporterProviderTest extends TestCase
+{
+    public function test_register_importer_can_register_a_new_importer_for_example_in_an_extension(): void
+    {
+        // Arrange
+        $provider = new ImporterProvider();
+
+        // Act
+        $provider->registerImporter('some_provider_importer', ClockifyProjectsImporter::class);
+
+        // Assert
+        $importer = $provider->getImporter('some_provider_importer');
+        $this->assertSame(ClockifyProjectsImporter::class, $importer::class);
+    }
+
+    public function test_get_importer_keys_return_the_keys_of_the_available_importers(): void
+    {
+        // Arrange
+        $provider = new ImporterProvider();
+
+        // Act
+        $keys = $provider->getImporterKeys();
+
+        // Assert
+        $this->assertSame([
+            'toggl_time_entries',
+            'toggl_data_importer',
+            'clockify_time_entries',
+            'clockify_projects',
+        ], $keys);
+    }
+}