Add unit tests.

Author: spacedmonkey

phpunit/blocks/render-post-featured-image-test.php

@@ -0,0 +1,77 @@
+<?php
+/**
+ * Post featured image block tests.
+ *
+ * @package WordPress
+ * @subpackage Blocks
+ */
+
+/**
+ * Post featured image block tests.
+ *
+ * @group blocks
+ */
+class Tests_Blocks_RenderFeaturedImage extends WP_UnitTestCase {
+	protected static $attachments = array();
+
+	public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
+		$file = DIR_TESTDATA . '/images/canola.jpg';
+		$now  = time();
+
+		for ( $i = 0; $i <= 3; $i ++ ) {
+			$post_date = gmdate( 'Y-m-d H:i:s', $now - ( 10 * $i ) );
+			$post      = $factory->post->create(
+				array(
+					'post_date' => $post_date,
+				)
+			);
+
+			self::$attachments[ $i ] = $factory->attachment->create_upload_object( $file, $post );
+			set_post_thumbnail( $post, self::$attachments[ $i ] );
+		}
+	}
+
+	public static function tear_down_after_class() {
+		foreach ( self::$attachments as $attachment_id ) {
+			wp_delete_post( $attachment_id, true );
+		}
+		parent::tear_down_after_class();
+	}
+
+	/**
+	 * @covers render_block_core_post_featured_image
+	 */
+	public function test_render_block_core_post_featured_image() {
+		$a = new MockAction();
+		add_filter( 'update_post_metadata_cache', array( $a, 'filter' ), 10, 2 );
+		query_posts( array() );
+
+		while ( have_posts() ) {
+			the_post();
+			$block = new WP_Block(
+				array(
+					'blockName' => 'core/post-featured-image',
+				),
+				array(
+					'postId' => get_the_ID(),
+				)
+			);
+			render_block_core_post_featured_image(
+				array(
+					'height'   => 200,
+					'sizeSlug' => 'post-thumbnail',
+					'width'    => 200,
+				),
+				'',
+				$block
+			);
+		}
+
+		// Reset Query.
+		wp_reset_query();
+		$args      = $a->get_args();
+		$last_args = end( $args );
+		$this->assertSame( self::$attachments, $last_args[1] );
+	}
+
+}