From 8139765b1f2d4d633119639aaad522a63306aa37 Mon Sep 17 00:00:00 2001
From: johnbillion <johnbillion@602fd350-edb4-49c9-b593-d223f7449a82>
Date: Fri, 26 Aug 2016 22:19:16 +0000
Subject: [PATCH] Themes: Begin introducing unit tests for the expected theme
 template hierarchy. More to come.

See #14310


git-svn-id: https://develop.svn.wordpress.org/trunk@38390 602fd350-edb4-49c9-b593-d223f7449a82
---
 tests/phpunit/tests/template.php | 130 +++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 tests/phpunit/tests/template.php

diff --git a/tests/phpunit/tests/template.php b/tests/phpunit/tests/template.php
new file mode 100644
index 0000000000..34cacd2c50
--- /dev/null
+++ b/tests/phpunit/tests/template.php
@@ -0,0 +1,130 @@
+<?php
+
+/**
+ * test wp-includes/template.php
+ *
+ * @group themes
+ */
+class Tests_Template extends WP_UnitTestCase {
+
+	protected $hierarchy = array();
+
+	public function tearDown() {
+		$this->hierarchy = array();
+		parent::tearDown();
+	}
+
+	/**
+	 * @dataProvider data_template_requests
+	 *
+	 * @param string $url       Request URL to mock.
+	 * @param array  $hierarchy Expected template hierarchy.
+	 */
+	public function test_template_hierarchy_is_correct( $url, array $hierarchy ) {
+
+		$this->go_to( $url );
+
+		foreach ( self::get_query_template_names() as $type => $condition ) {
+
+			if ( call_user_func( $condition ) ) {
+				add_filter( "{$type}_template_hierarchy", array( $this, 'log_template_hierarchy' ) );
+				call_user_func( "get_{$type}_template" );
+				remove_filter( "{$type}_template_hierarchy", array( $this, 'log_template_hierarchy' ) );
+			}
+
+		}
+
+		$this->assertEquals( $hierarchy, $this->hierarchy );
+	}
+
+	public function data_template_requests() {
+		$post = self::factory()->post->create_and_get( array(
+			'post_type' => 'post',
+			'post_name' => 'post-name',
+		) );
+		set_post_format( $post, 'quote' );
+
+		$page = self::factory()->post->create_and_get( array(
+			'post_type' => 'page',
+			'post_name' => 'page-name',
+		) );
+		add_post_meta( $page->ID, '_wp_page_template', 'templates/page.php' );
+
+		$data = array();
+
+		// Single post embed
+		$data[] = array(
+			get_post_embed_url( $post ),
+			array(
+				'embed-post-quote.php',
+				'embed-post.php',
+				'embed.php',
+				'single-post-post-name.php',
+				'single-post.php',
+				'single.php',
+				'singular.php',
+			),
+		);
+
+		// Search
+		$data[] = array(
+			add_query_arg( 's', 'foo', home_url() ),
+			array(
+				'search.php',
+			),
+		);
+
+		// Single page
+		$data[] = array(
+			get_permalink( $page ),
+			array(
+				'templates/page.php',
+				'page-page-name.php',
+				"page-{$page->ID}.php",
+				'page.php',
+				'singular.php',
+			),
+		);
+
+		// Single post
+		$data[] = array(
+			get_permalink( $post ),
+			array(
+				'single-post-post-name.php',
+				'single-post.php',
+				'single.php',
+				'singular.php',
+			),
+		);
+
+		return $data;
+	}
+
+	protected static function get_query_template_names() {
+		return array(
+			'embed'             => 'is_embed',
+			'404'               => 'is_404',
+			'search'            => 'is_search',
+			'front_page'        => 'is_front_page',
+			'home'              => 'is_home',
+			'post_type_archive' => 'is_post_type_archive',
+			'taxonomy'          => 'is_tax',
+			'attachment'        => 'is_attachment',
+			'single'            => 'is_single',
+			'page'              => 'is_page',
+			'singular'          => 'is_singular',
+			'category'          => 'is_category',
+			'tag'               => 'is_tag',
+			'author'            => 'is_author',
+			'date'              => 'is_date',
+			'archive'           => 'is_archive',
+			'paged'             => 'is_paged',
+		);
+	}
+
+	public function log_template_hierarchy( array $hierarchy ) {
+		$this->hierarchy = array_merge( $this->hierarchy, $hierarchy );
+		return $hierarchy;
+	}
+
+}