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<title>[29347] trunk/tests/phpunit/tests/walker.php: Add unit tests for `Walker` class.</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/29347">29347</a></dd>
<dt>Author</dt> <dd>wonderboymusic</dd>
<dt>Date</dt> <dd>2014-08-01 20:35:25 +0000 (Fri, 01 Aug 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Add unit tests for `Walker` class.
Props willmot.
See <a href="http://core.trac.wordpress.org/ticket/15667">#15667</a>.</pre>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunktestsphpunittestswalkerphp">trunk/tests/phpunit/tests/walker.php</a></li>
</ul>
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<h3>Diff</h3>
<a id="trunktestsphpunittestswalkerphp"></a>
<div class="addfile"><h4>Added: trunk/tests/phpunit/tests/walker.php (0 => 29347)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/tests/walker.php (rev 0)
+++ trunk/tests/phpunit/tests/walker.php 2014-08-01 20:35:25 UTC (rev 29347)
</span><span class="lines">@@ -0,0 +1,199 @@
</span><ins>+<?php
+
+/**
+ * @group post
+ * @group navmenus
+ * @group taxonomy
+ * @group walker
+ */
+class Tests_Walker extends WP_UnitTestCase {
+
+ function setUp() {
+
+ $this->walker = new Walker_Test();
+
+ parent::setUp();
+
+ }
+
+ function test_single_item() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ) );
+ $output = $this->walker->walk( $items, 0 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li>', $output );
+
+ }
+
+ function test_single_item_flat() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ) );
+ $output = $this->walker->walk( $items, -1 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li>', $output );
+
+ }
+
+ function test_single_item_depth_1() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ) );
+ $output = $this->walker->walk( $items, 1 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li>', $output );
+
+ }
+
+ function test_multiple_items_single_level() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ), (object) array( 'id' => 2, 'parent' => 0 ) );
+
+ $output = $this->walker->walk( $items, 0 );
+
+ $this->assertEquals( 2, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li><li>2</li>', $output );
+
+ }
+
+ function test_multiple_items_multiple_levels() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ), (object) array( 'id' => 2, 'parent' => 1 ) );
+
+ $output = $this->walker->walk( $items, 0 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1<ul><li>2</li></ul></li>', $output );
+
+ }
+
+ function test_multiple_items_multiple_levels_flat() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ), (object) array( 'id' => 2, 'parent' => 1 ) );
+
+ $output = $this->walker->walk( $items, -1 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li><li>2</li>', $output );
+
+ }
+
+ function test_multiple_items_multiple_levels_depth_1() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ), (object) array( 'id' => 2, 'parent' => 1 ) );
+
+ $output = $this->walker->walk( $items, 1 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li>', $output );
+
+ }
+
+ function test_multiple_items_multiple_levels_depth_2() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 0 ), (object) array( 'id' => 2, 'parent' => 1 ), (object) array( 'id' => 3, 'parent' => 2 ) );
+
+ $output = $this->walker->walk( $items, 2 );
+
+ $this->assertEquals( 1, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1<ul><li>2</li></ul></li>', $output );
+
+ }
+
+ function test_multiple_items_recursive() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 2 ), (object) array( 'id' => 2, 'parent' => 1 ) );
+
+ $output = $this->walker->walk( $items, 0 );
+
+ $this->assertEquals( 0, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1<ul><li>2</li></ul></li>', $output );
+
+ }
+
+ function test_single_item_child() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 3 ) );
+
+ $output = $this->walker->walk( $items, 0 );
+
+ $this->assertEquals( 0, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>1</li>', $output );
+
+ }
+
+ function test_single_item_missing_parent_depth_1() {
+
+ $items = array( (object) array( 'id' => 1, 'parent' => 3 ) );
+
+ $output = $this->walker->walk( $items, 1 );
+
+ $this->assertEquals( 0, $this->walker->get_number_of_root_elements( $items ) );
+
+ // It's not clear what the output of this "should" be
+
+ // Currently the item is simply returned
+ $this->assertEquals( '<li>1</li>', $output );
+
+ // But as we've only asked for the first depth maybe nothing should be returned?
+ //$this->assertEquals( '', $output );
+
+ }
+
+ function test_multiple_items_missing_parents() {
+
+ $items = array( (object) array( 'id' => 4, 'parent' => 1 ), (object) array( 'id' => 5, 'parent' => 2 ), (object) array( 'id' => 6, 'parent' => 3 ) );
+
+ $output = $this->walker->walk( $items, 0 );
+
+ $this->assertEquals( 0, $this->walker->get_number_of_root_elements( $items ) );
+ $this->assertEquals( '<li>4</li><li>5</li><li>6</li>', $output );
+
+ }
+
+ function test_multiple_items_missing_parents_depth_1() {
+
+ $items = array( (object) array( 'id' => 4, 'parent' => 1 ), (object) array( 'id' => 5, 'parent' => 2 ), (object) array( 'id' => 6, 'parent' => 3 ) );
+
+ $output = $this->walker->walk( $items, 1 );
+
+ $this->assertEquals( 0, $this->walker->get_number_of_root_elements( $items ) );
+
+ // It's not clear what the output of this "should" be
+
+ // Currently the first item is simply returned
+ $this->assertEquals( '<li>4</li>', $output );
+
+ // But as we've only asked for the first depth maybe nothing should be returned?
+ //$this->assertEquals( '', $output );
+
+ // Or maybe all items which are missing parents should simply be treat top level?
+ //$this->assertEquals( '<li>4</li><li>5</li><li>6</li>', $output );
+
+ }
+
+}
+
+class Walker_Test extends Walker {
+
+ var $tree_type = 'test';
+ var $db_fields = array ( 'parent' => 'parent', 'id' => 'id' );
+
+ function start_lvl( &$output, $depth = 0, $args = array() ) {
+ $output .= '<ul>';
+ }
+
+ function end_lvl( &$output, $depth = 0, $args = array() ) {
+ $output .= '</ul>';
+ }
+
+ function start_el( &$output, $item, $depth = 0, $args = array(), $current_page = 0 ) {
+ $output .= '<li>' . $item->id;
+ }
+
+ function end_el( &$output, $page, $depth = 0, $args = array() ) {
+ $output .= '</li>';
+ }
+
+}
</ins></span></pre>
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