add tests

tests/Unit/Integrations/Blocks/Block_Editor_Integration_Test.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace Yoast\WP\SEO\Tests\Unit\Integrations\Blocks;
+
+use Brain\Monkey\Functions;
+use Mockery;
+use WPSEO_Admin_Asset_Manager;
+use Yoast\WP\SEO\Integrations\Blocks\Block_Editor_Integration;
+use Yoast\WP\SEO\Tests\Unit\TestCase;
+
+/**
+ * Test class for block editor integration.
+ *
+ * @coversDefaultClass \Yoast\WP\SEO\Integrations\Blocks\Block_Editor_Integration
+ *
+ * @group blocks
+ */
+final class Block_Editor_Integration_Test extends TestCase {
+
+	/**
+	 * Holds the test instance.
+	 *
+	 * @var Block_Editor_Integration
+	 */
+	protected $instance;
+
+	/**
+	 * Holds the asset manager mock.
+	 *
+	 * @var Mockery\MockInterface|WPSEO_Admin_Asset_Manager
+	 */
+	protected $asset_manager;
+
+	/**
+	 * Sets an instance for testing.
+	 *
+	 * @return void
+	 */
+	public function set_up() {
+		parent::set_up();
+
+		$this->asset_manager = Mockery::mock( WPSEO_Admin_Asset_Manager::class );
+
+		$this->instance = new Block_Editor_Integration( $this->asset_manager );
+	}
+
+	/**
+	 * Test constructor.
+	 *
+	 * @covers ::__construct
+	 *
+	 * @return void
+	 */
+	public function test_constructor() {
+		$this->assertInstanceOf(
+			WPSEO_Admin_Asset_Manager::class,
+			$this->getPropertyValue( $this->instance, 'asset_manager' )
+		);
+	}
+
+	/**
+	 * Tests that register_hooks registers the expected hooks.
+	 *
+	 * @covers ::register_hooks
+	 *
+	 * @return void
+	 */
+	public function test_register_hooks() {
+		Functions\expect( 'add_action' )
+			->once()
+			->with( 'enqueue_block_assets', [ $this->instance, 'enqueue' ] );
+
+		$this->instance->register_hooks();
+	}
+
+	/**
+	 * Tests that enqueue enqueues the expected assets.
+	 *
+	 * @covers ::enqueue
+	 *
+	 * @return void
+	 */
+	public function test_enqueue() {
+		$this->asset_manager->expects( 'enqueue_style' )
+			->once()
+			->with( 'block-editor' );
+
+		$this->instance->enqueue();
+	}
+}