Add unit tests for the gutenberg_render_block_core_post_title() funct…

…ion.

Add unit tests for the gutenberg_render_block_core_post_title() function.

Co-authored-by: akasunil <[email protected]>
Co-authored-by: draganescu <[email protected]>
Co-authored-by: spacedmonkey <[email protected]>
Co-authored-by: anton-vlasenko <[email protected]>

phpunit/blocks/renderBlockCorePostTitle.php

@@ -0,0 +1,185 @@
+<?php
+/**
+ * Tests for the gutenberg_render_block_core_post_title() function.
+ *
+ * @package WordPress
+ * @subpackage Blocks
+ *
+ * @covers ::gutenberg_render_block_core_post_title
+ * @group blocks
+ */
+class Tests_Blocks_RenderBlockCorePostTitle extends WP_UnitTestCase {
+	/**
+	 * Post object.
+	 *
+	 * @var WP_Post
+	 */
+	protected static $post;
+
+	/**
+	 * Array of attributes.
+	 *
+	 * @var array
+	 */
+	protected static $attributes;
+
+	/**
+	 * Block object.
+	 *
+	 * @var WP_Block
+	 */
+	protected static $block;
+
+	/**
+	 * Setup method.
+	 *
+	 * @param WP_UnitTest_Factory $factory Helper that lets us create fake data.
+	 */
+	public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
+		self::$post = $factory->post->create_and_get( array( 'post_title' => 'Post title block Unit Test' ) );
+
+		self::$attributes = array(
+			'textAlign'  => '',
+			'level'      => 2,
+			'isLink'     => false,
+			'linkTarget' => '',
+			'rel'        => '',
+		);
+
+		self::$block = new stdClass();
+
+		$block_args = array(
+			'blockName'    => 'core/post-title',
+			'attrs'        => array(
+				'textColor' => 'red',
+			),
+			'innerBlock'   => array(),
+			'innerContent' => array(),
+			'innerHTML'    => array(),
+		);
+
+		WP_Block_Supports::init();
+		WP_Block_Supports::$block_to_render = $block_args;
+	}
+
+	/**
+	 * Tear down method.
+	 */
+	public static function wpTearDownAfterClass() {
+		wp_delete_post( self::$post->ID, true );
+	}
+
+	/**
+	 * Test if the function returns an empty string when the post title is empty.
+	 *
+	 * @param mixed  $context         Block context.
+	 * @param string $failure_message Failure message.
+	 *
+	 * @dataProvider data_should_render_empty_string_when_title_is_empty
+	 */
+	public function test_should_render_empty_string_when_title_is_empty( $context, $failure_message ) {
+		if ( $context ) {
+			self::$block->context = $context;
+		}
+		$rendered = gutenberg_render_block_core_post_title( self::$attributes, '', self::$block );
+		$this->assertSame( '', $rendered, $failure_message );
+	}
+
+	/**
+	 * Data provider.
+	 *
+	 * @return array
+	 */
+	public function data_should_render_empty_string_when_title_is_empty() {
+		return array(
+			'empty block context' => array( null, 'Failed asserting that rendering result is an empty string when block context is not set.' ),
+			'incorrect post ID'   => array( array( 'postId' => 0 ), 'Failed asserting that rendering result is an empty string when post ID is incorrect.' ),
+		);
+	}
+
+	/**
+	 * Test if the function returns correct titles.
+	 */
+	public function test_should_render_correct_title() {
+
+		$GLOBALS['post']      = self::$post;
+		self::$block->context = array( 'postId' => self::$post->ID );
+
+		$rendered = gutenberg_render_block_core_post_title( self::$attributes, '', self::$block );
+		$this->assertNotEmpty(
+			$rendered,
+			'Failed to assert that $rendered is an non-empty string.'
+		);
+		$this->assertStringContainsString(
+			'Post title block Unit Test',
+			$rendered,
+			'Failed to assert that $rendered contain the post title string.'
+		);
+		$this->assertStringContainsString(
+			'</h2>',
+			$rendered,
+			'Failed to assert that $rendered contain a closing html heading tag.'
+		);
+		$this->assertStringNotContainsString(
+			get_permalink( self::$post->ID ),
+			$rendered,
+			'Failed to assert that $rendered does not contain the post link.'
+		);
+		$this->assertStringNotContainsString(
+			'<a href=',
+			$rendered,
+			'Failed to assert that $rendered does not contain a html anchor tag.'
+		);
+		$this->assertStringNotContainsString(
+			'has-text-align-left',
+			$rendered,
+			'Failed to assert that $rendered does not contain the has-text-align-left class.'
+		);
+
+		self::$attributes['level'] = '1';
+		$rendered                  = gutenberg_render_block_core_post_title( self::$attributes, '', self::$block );
+		$this->assertStringContainsString(
+			'<h1',
+			$rendered,
+			'Failed to assert that $rendered contain the HTML heading tag.'
+		);
+		$this->assertStringContainsString(
+			'</h1>',
+			$rendered,
+			'Failed to assert that $rendered contain a closing HTML heading tag.'
+		);
+
+		self::$attributes['textAlign'] = 'left';
+		$rendered                      = gutenberg_render_block_core_post_title( self::$attributes, '', self::$block );
+		$this->assertStringContainsString(
+			'has-text-align-left',
+			$rendered,
+			'Failed to assert that $rendered contain the has-text-align-left class.'
+		);
+
+		self::$attributes['isLink']     = true;
+		self::$attributes['linkTarget'] = '_blank';
+		self::$attributes['rel']        = 'no-relative';
+		$rendered                       = gutenberg_render_block_core_post_title( self::$attributes, '', self::$block );
+		$this->assertStringContainsString(
+			get_permalink( self::$post->ID ),
+			$rendered,
+			'Failed to assert that $rendered contain the post link.'
+		);
+		$this->assertStringContainsString(
+			'<a href=',
+			$rendered,
+			'Failed to assert that $rendered contain html anchor tag.'
+		);
+		$this->assertStringContainsString(
+			'_blank',
+			$rendered,
+			'Failed to assert that $rendered contain the link target attribute.'
+		);
+		$this->assertStringContainsString(
+			'no-relative',
+			$rendered,
+			'Failed to assert that $rendered contain the link relation attribute.'
+		);
+	}
+}