Add partial S3_Media_Sync class integration tests

tests/integration/class-s3-media-sync-test.php

@@ -0,0 +1,133 @@
+<?php
+/**
+ * Integration tests for S3_Media_Sync
+ *
+ * @package S3_Media_Sync
+ */
+
+namespace S3_Media_Sync\Tests\Integration;
+
+use S3_Media_Sync;
+
+/**
+ * S3_Media_Sync test case.
+ *
+ * @covers S3_Media_Sync
+ */
+class S3_Media_Sync_Test extends WP_Integration_Test_Case {
+
+	private array $complete_settings
+		= [
+			'bucket'     => 'test-bucket',
+			'key'        => 'test-key',
+			'secret'     => 'test-secret',
+			'region'     => 'test-region',
+			'object_acl' => 'public-read',
+		];
+
+	private array $incomplete_settings
+		= [
+			'bucket'     => '',
+			'key'        => '',
+			'secret'     => '',
+			'region'     => '',
+			'object_acl' => 'public-read',
+		];
+
+	/**
+	 * Helper method for that checking media sync hooks are registered.
+	 *
+	 * @param string $assertion The assertion to use.
+	 */
+	private function assert_media_syncs_hooks_registered( string $assertion ): void {
+		self::$assertion( has_filter( 'wp_handle_upload', [ $this->s3_media_sync, 'add_attachment_to_s3' ] ) );
+		self::$assertion( has_action( 'delete_attachment', [ $this->s3_media_sync, 'delete_attachment_from_s3' ] ) );
+		self::$assertion( has_filter( 'wp_save_image_editor_file', [ $this->s3_media_sync, 'add_updated_attachment_to_s3' ] ) );
+	}
+
+	/**
+	 * @testdox Allow media syncs when required settings set
+	 *
+	 * @throws \ReflectionException
+	 */
+	public function test_allow_media_syncs_when_required_settings_set(): void {
+		parent::set_private_property(
+			$this->s3_media_sync::class,
+			$this->s3_media_sync,
+			'settings',
+			$this->complete_settings
+		);
+
+		$this->s3_media_sync->setup();
+
+		// Both has_filter() and has_action() return the priority of the hook if it exists.
+		$this->assert_media_syncs_hooks_registered( 'assertIsInt' );
+	}
+
+	/**
+	 * @testdox Disable media syncs when missing required settings
+	 *
+	 * @throws \ReflectionException
+	 */
+	public function test_disable_media_syncs_when_missing_required_settings(): void {
+		parent::set_private_property(
+			$this->s3_media_sync::class,
+			$this->s3_media_sync,
+			'settings',
+			$this->incomplete_settings
+		);
+
+		$this->s3_media_sync->setup();
+
+		$this->assert_media_syncs_hooks_registered( 'assertFalse' );
+	}
+
+	/**
+	 * @testdox Stream wrapper registered
+	 *
+	 * @throws \ReflectionException
+	 */
+	public function test_stream_wrapper_registered(): void {
+		parent::set_private_property(
+			$this->s3_media_sync::class,
+			$this->s3_media_sync,
+			'settings',
+			$this->complete_settings
+		);
+
+		$this->s3_media_sync->setup();
+
+		$this->assertContains( 's3', stream_get_wrappers() );
+	}
+
+	/**
+	 * @testdox Invalid s3 settings cause admin error notice
+	 *
+	 * @throws \ReflectionException
+	 */
+	public function test_invalid_s3_settings_cause_admin_error_notice(): void {
+		parent::set_private_property(
+			$this->s3_media_sync::class,
+			$this->s3_media_sync,
+			'settings',
+			$this->complete_settings
+		);
+
+		$this->s3_media_sync->setup();
+
+		$this->s3_media_sync->s3_media_sync_settings_validation( $this->complete_settings );
+
+		$admin_error_codes = wp_list_pluck( get_settings_errors(), 'code' );
+
+		$this->assertContains( 's3-media-sync-settings-error', $admin_error_codes );
+	}
+
+	/**
+	 * Nullify the S3_Media_Sync instance after each test.
+	 *
+	 * @throws \ReflectionException
+	 */
+	public function tear_down(): void {
+		parent::tear_down();
+	}
+}