test(content-distribution): post content (#183)

tests/unit-tests/content-distribution/post-content/classic.html

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+<h2>Heading 2</h2>
+<img class="alignnone size-medium wp-image-123" src="https://picsum.photos/id/1/300/300.jpg" width="300" height="300" />
+<strong>Strong paragraph</strong>
+<p style="text-align: center;">Align middle</p>
+<p style="text-align: right;">Align right</p>
+<ul>
+	<li>List Item #1</li>
+	<li>List Item #2</li>
+</ul>
+<ol>
+	<li>Ordered List Item #1</li>
+	<li>Ordered List Item #2</li>
+</ol>
+<a href="https://newspack.com">Link</a>

tests/unit-tests/content-distribution/post-content/cover.html

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+<!-- wp:cover {"url":"https://picsum.photos/id/2/300/300.jpg","id":123,"dimRatio":50,"customOverlayColor":"#706959","isUserOverlayColor":false,"layout":{"type":"constrained"}} -->
+<div class="wp-block-cover">
+  <span
+    aria-hidden="true"
+    class="wp-block-cover__background has-background-dim"
+    style="background-color: #706959"
+  ></span
+  ><img
+    class="wp-block-cover__image-background wp-image-123"
+    alt=""
+    src="https://picsum.photos/id/2/300/300.jpg"
+    data-object-fit="cover"
+  />
+  <div class="wp-block-cover__inner-container">
+    <!-- wp:paragraph {"align":"center","placeholder":"Write title…","fontSize":"large"} -->
+    <p class="has-text-align-center has-large-font-size">Cover Title</p>
+    <!-- /wp:paragraph -->
+  </div>
+</div>
+<!-- /wp:cover -->

tests/unit-tests/content-distribution/post-content/gallery.html

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+<!-- wp:gallery {"linkTo":"none"} -->
+<figure class="wp-block-gallery has-nested-images columns-default is-cropped">
+  <!-- wp:image {"id":123,"sizeSlug":"large","linkDestination":"none","meta":{"_media_credit":"","_media_credit_url":"","_navis_media_credit_org":""}} -->
+  <figure class="wp-block-image size-large"><img src="https://picsum.photos/id/1/300/300.jpg" alt="" class="wp-image-123"/><figcaption class="wp-element-caption">Test 1</figcaption></figure>
+  <!-- /wp:image -->
+
+  <!-- wp:image {"id":456,"sizeSlug":"large","linkDestination":"none","meta":{"_media_credit":"","_media_credit_url":"","_navis_media_credit_org":""}} -->
+  <figure class="wp-block-image size-large"><img src="https://picsum.photos/id/2/300/300.jpg" alt="" class="wp-image-456"/><figcaption class="wp-element-caption">Test 2</figcaption></figure>
+  <!-- /wp:image -->
+
+  <!-- wp:image {"id":789,"sizeSlug":"large","linkDestination":"none","meta":{"_media_credit":"","_media_credit_url":"","_navis_media_credit_org":""}} -->
+  <figure class="wp-block-image size-large"><img src="https://picsum.photos/id/3/300/300.jpg" alt="" class="wp-image-789"/><figcaption class="wp-element-caption">Test 3</figcaption></figure>
+  <!-- /wp:image -->
+
+  <!-- wp:image {"id":012,"sizeSlug":"large","linkDestination":"none","meta":{"_media_credit":"","_media_credit_url":"","_navis_media_credit_org":""}} -->
+  <figure class="wp-block-image size-large"><img src="https://picsum.photos/id/4/300/300.jpg" alt="" class="wp-image-012"/><figcaption class="wp-element-caption">Test 4</figcaption></figure>
+  <!-- /wp:image -->
+</figure>
+<!-- /wp:gallery -->

tests/unit-tests/content-distribution/test-post-content.php

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+<?php
+/**
+ * Class TestPostContent
+ *
+ * @package Newspack_Network
+ */
+
+namespace Test\Content_Distribution;
+
+use Newspack_Network\Content_Distribution\Outgoing_Post;
+use Newspack_Network\Content_Distribution\Incoming_Post;
+
+/**
+ * Test the Incoming_Post class.
+ */
+class TestPostContent extends \WP_UnitTestCase {
+	/**
+	 * URL for node that distributes posts.
+	 *
+	 * @var string
+	 */
+	protected $node_1 = 'https://node1.test';
+
+	/**
+	 * URL for node that receives posts.
+	 *
+	 * @var string
+	 */
+	protected $node_2 = 'https://node2.test';
+
+	/**
+	 * Set up.
+	 */
+	public function set_up() {
+		parent::set_up();
+
+		// Set the site URL for the node that receives posts.
+		update_option( 'siteurl', $this->node_2 );
+		update_option( 'home', $this->node_2 );
+	}
+
+	/**
+	 * Get outgoing post payload with content.
+	 *
+	 * @param string $content The post content.
+	 *
+	 * @return array The outgoing post payload.
+	 */
+	private function get_outgoing_post_payload_with_content( $content ) {
+		$outgoing_post = $this->factory->post->create_and_get( [ 'post_content' => $content ] );
+		$payload       = ( new Outgoing_Post( $outgoing_post->ID ) )->get_payload();
+
+		// Mock distribution for the post.
+		$payload['site_url'] = $this->node_1;
+		$payload['sites']    = [ $this->node_2 ];
+
+		return $payload;
+	}
+
+	/**
+	 * Data provider for content.
+	 */
+	public function content() {
+		$files = scandir( __DIR__ . '/post-content' );
+		$files = array_diff( $files, [ '.', '..' ] );
+		return array_map(
+			function ( $file ) {
+				return [ pathinfo( $file, PATHINFO_FILENAME ) ];
+			},
+			$files
+		);
+	}
+
+	/**
+	 * Assert that two contents are equal.
+	 *
+	 * @param string $expected The expected content.
+	 * @param string $actual   The actual content.
+	 */
+	private function assertEqualContent( $expected, $actual ) {
+		$expected = trim( $expected );
+		$actual   = trim( $actual );
+
+		/**
+		 * Remove classes from tags to make comparison easier for blocks that uses
+		 * wp_unique_id().
+		 */
+		$expected = preg_replace( '/ class="[^"]+"/', '', $expected );
+		$actual   = preg_replace( '/ class="[^"]+"/', '', $actual );
+
+		$this->assertEquals( $expected, $actual );
+	}
+
+	/**
+	 * Test classic editor content.
+	 *
+	 * @param string $type The content type.
+	 *
+	 * @dataProvider content
+	 */
+	public function test_content( $type ) {
+		if ( 'classic' === $type ) {
+			add_filter( 'use_block_editor_for_post_type', '__return_false' );
+		}
+
+		$content = file_get_contents( __DIR__ . '/post-content/' . $type . '.html' );
+		$payload = $this->get_outgoing_post_payload_with_content( $content );
+
+		$incoming_post = new Incoming_Post( $payload );
+		$post_id       = $incoming_post->insert();
+
+		$this->assertEqualContent(
+			apply_filters( 'the_content', get_post_field( 'post_content', $payload['post_id'] ) ),
+			apply_filters( 'the_content', get_post_field( 'post_content', $post_id ) )
+		);
+
+		if ( 'classic' === $type ) {
+			remove_filter( 'use_block_editor_for_post_type', '__return_false' );
+		}
+	}
+}