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<title>[50789] trunk/tests/phpunit/tests/bookmark/getBookmark.php: Build/Tests tools: Improve `get_bookmark()` test coverage.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/50789">50789</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/50789","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>peterwilsoncc</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2021-04-26 00:58:14 +0000 (Mon, 26 Apr 2021)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Build/Tests tools: Improve `get_bookmark()` test coverage.

Props hellofromtonya, peterwilsoncc.
See <a href="https://core.trac.wordpress.org/ticket/52988">#52988</a>.</pre>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunktestsphpunittestsbookmarkgetBookmarkphp">trunk/tests/phpunit/tests/bookmark/getBookmark.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunktestsphpunittestsbookmarkgetBookmarkphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: trunk/tests/phpunit/tests/bookmark/getBookmark.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/bookmark/getBookmark.php                                (rev 0)
+++ trunk/tests/phpunit/tests/bookmark/getBookmark.php  2021-04-26 00:58:14 UTC (rev 50789)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,398 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+
+/**
+ * @group bookmark
+ * @covers ::get_bookmark
+ */
+class Tests_Bookmark_GetBookmark extends WP_UnitTestCase {
+       /**
+        * Instance of the bookmark object.
+        *
+        * @var stdClass
+        */
+       private static $bookmark;
+
+       /**
+        * Create and get a bookmark for the tests.
+        *
+        * @param WP_UnitTest_Factory $factory
+        */
+       public static function wpSetUpBeforeClass( WP_UnitTest_Factory $factory ) {
+               self::$bookmark = $factory->bookmark->create_and_get();
+               // Delete the bookmark that was cached when the factory invoked get_bookmark().
+               wp_cache_delete( self::$bookmark->link_id, 'bookmark' );
+       }
+
+       /**
+        * Delete the bookmark before existing the test class.
+        */
+       public static function wpTearDownAfterClass() {
+               wp_delete_link( self::$bookmark->link_id );
+       }
+
+       /**
+        * Reset globals after each test.
+        */
+       public function tearDown() {
+               unset( $GLOBALS['link'] );
+               parent::tearDown();
+       }
+
+       /**
+        * Path 1A: Given empty bookmark and global link exists.
+        *
+        * @dataProvider data_when_empty_bookmark
+        */
+       public function test_should_return_global_link_in_requested_output_format( $args ) {
+               $GLOBALS['link'] = self::$bookmark;
+               $args            = $this->init_func_args( $args, 0 );
+               $actual_bookmark = get_bookmark( ...$args );
+
+               $expected = $this->maybe_format_expected_data( $args, $GLOBALS['link'] );
+
+               $this->assertArrayHasKey( 'link', $GLOBALS );
+               $this->assertSame( $expected, $actual_bookmark );
+               // Should bypass the cache.
+               $this->assertFalse( wp_cache_get( self::$bookmark->link_id, 'bookmark' ) );
+       }
+
+       /**
+        * Path 1B: Given empty bookmark and global link does not exist.
+        *
+        * @dataProvider data_when_empty_bookmark
+        */
+       public function test_should_return_null( $args ) {
+               $args = $this->init_func_args( $args, 0 );
+
+               // Run the function and test results.
+               $actual_bookmark = get_bookmark( ...$args );
+
+               $this->assertArrayNotHasKey( 'link', $GLOBALS );
+               $this->assertNull( $actual_bookmark );
+               $this->assertFalse( wp_cache_get( self::$bookmark->link_id, 'bookmark' ) );
+       }
+
+       /**
+        * Path 1 data provider, i.e. when given empty bookmark.
+        */
+       public function data_when_empty_bookmark() {
+               return array(
+                       // Unhappy path.
+                       'with bookmark type mismatch'        => array(
+                               array(
+                                       'bookmark' => '',
+                               ),
+                       ),
+                       'with invalid output'                => array(
+                               array(
+                                       'bookmark' => 0,
+                                       'output'   => 'invalid',
+                               ),
+                       ),
+                       'with bookmark type mismatch and invalid output' => array(
+                               array(
+                                       'bookmark' => null,
+                                       'output'   => 'invalid',
+                               ),
+                       ),
+                       // Happy path.
+                       'with defaults'                      => array(
+                               array(
+                                       'bookmark' => 0,
+                               ),
+                       ),
+                       'with non-default output'            => array(
+                               array(
+                                       'bookmark' => 0,
+                                       'output'   => ARRAY_A,
+                               ),
+                       ),
+                       'with non-default filter'            => array(
+                               array(
+                                       'bookmark' => 0,
+                                       'filter'   => 'display',
+                               ),
+                       ),
+                       'with non-default output and filter' => array(
+                               array(
+                                       'bookmark' => 0,
+                                       'output'   => ARRAY_N,
+                                       'filter'   => 'display',
+                               ),
+                       ),
+               );
+       }
+
+       /**
+        * Path 2: Bookmark instance is given.
+        *
+        * @dataProvider data_when_instance_bookmark
+        */
+       public function test_should_cache_bookmark_when_given_instance( $args ) {
+               $args     = $this->init_func_args( $args );
+               $bookmark = $args[0];
+               $expected = $this->maybe_format_expected_data( $args, $bookmark );
+
+               // Check the cache does not exist before the test.
+               $this->assertFalse( wp_cache_get( $bookmark->link_id, 'bookmark' ) );
+
+               // Run the function and test results.
+               $actual_bookmark = get_bookmark( ...$args );
+
+               $this->assertSame( $expected, $actual_bookmark );
+
+               // Check the bookmark was cached.
+               $actual_cache = wp_cache_get( $bookmark->link_id, 'bookmark' );
+               $this->assertEquals( $bookmark, $actual_cache );
+       }
+
+       /**
+        * Path 2 data provider, i.e. when bookmark instance is given.
+        */
+       public function data_when_instance_bookmark() {
+               return array(
+                       // Unhappy path.
+                       'with incomplete bookmark data'      => array(
+                               array(
+                                       'bookmark' => (object) array(
+                                               'link_id' => '100',
+                                       ),
+                               ),
+                       ),
+                       'with invalid output'                => array(
+                               array(
+                                       'output' => 'invalid',
+                               ),
+                       ),
+                       'with invalid filter'                => array(
+                               array(
+                                       'filter' => 'invalid',
+                               ),
+                       ),
+                       // Happy path.
+                       'with defaults'                      => array(
+                               array(),
+                       ),
+                       'with non-default output'            => array(
+                               array(
+                                       'output' => ARRAY_A,
+                               ),
+                       ),
+                       'with non-default filter'            => array(
+                               array(
+                                       'filter' => 'display',
+                               ),
+                       ),
+                       'with non-default output and filter' => array(
+                               array(
+                                       'output' => ARRAY_N,
+                                       'filter' => 'display',
+                               ),
+                       ),
+               );
+       }
+
+       /**
+        * Path 3A: Uses the global link when exists and the given bookmark link ID matches the global link.
+        *
+        * @dataProvider data_when_else
+        *
+        * @param array $args Function argument list.
+        */
+       public function test_should_return_global_when_else( $args ) {
+               $args            = $this->init_func_args( $args, self::$bookmark->link_id );
+               $GLOBALS['link'] = self::$bookmark;
+               $expected        = $this->maybe_format_expected_data( $args, $GLOBALS['link'] );
+
+               // Run the function and test results.
+               $actual_bookmark = get_bookmark( ...$args );
+
+               $this->assertSame( $expected, $actual_bookmark );
+               $this->assertFalse( wp_cache_get( self::$bookmark->link_id, 'bookmark' ) );
+       }
+
+       /**
+        * Path 3B: Pulls from cache when given existing bookmark link ID.
+        *
+        * @dataProvider data_when_else
+        *
+        * @param array $args Function argument list.
+        */
+       public function test_should_return_cached_bookmark_when_given_existing_link_id( $args ) {
+               // Cache the bookmark instance to setup the test.
+               wp_cache_add( self::$bookmark->link_id, self::$bookmark, 'bookmark' );
+               $args     = $this->init_func_args( $args, self::$bookmark->link_id );
+               $expected = $this->maybe_format_expected_data( $args, self::$bookmark );
+
+               // Run the function and test results.
+               $actual_bookmark = get_bookmark( ...$args );
+
+               /*
+                * For non-array output type, use assetEquals. Why? The object pulled from cache will have the same
+                * property values but will be a different object than the expected object.
+                */
+               if ( is_object( $expected ) ) {
+                       $this->assertEquals( $expected, $actual_bookmark );
+               } else {
+                       $this->assertSameSets( $expected, $actual_bookmark );
+               }
+
+               // Check the bookmark was cached.
+               $actual_cache = wp_cache_get( self::$bookmark->link_id, 'bookmark' );
+               $this->assertEquals( self::$bookmark, $actual_cache );
+       }
+
+       /**
+        * Path 3C: Attempts to pull non-existent bookmark from database.
+        *
+        * @dataProvider data_when_else
+        *
+        * @param array $args Function argument list.
+        */
+       public function test_should_return_null_when_bookmark_not_in_database( $args ) {
+               $bookmark_link_id = self::$bookmark->link_id * 100;
+               $args             = $this->init_func_args( $args, $bookmark_link_id );
+
+               // Validate it will run path 6.
+               $this->assertFalse( wp_cache_get( $bookmark_link_id, 'bookmark' ) );
+               $this->assertArrayNotHasKey( 'link', $GLOBALS );
+               global $wpdb;
+               $db_actual = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->links WHERE link_id = %d LIMIT 1", $bookmark_link_id ) );
+               $this->assertNull( $db_actual );
+
+               // Run the function and test results.
+               $actual_bookmark = get_bookmark( ...$args );
+
+               $this->assertNull( $actual_bookmark );
+               $this->assertFalse( wp_cache_get( $bookmark_link_id, 'bookmark' ) );
+       }
+
+       /**
+        * Path 3D: Pulls existing bookmark from the database.
+        *
+        * @dataProvider data_when_else
+        *
+        * @param array $args Function argument list.
+        */
+       public function test_should_return_existing_bookmark_from_database( $args ) {
+               $args     = $this->init_func_args( $args, self::$bookmark->link_id );
+               $expected = $this->maybe_format_expected_data( $args, self::$bookmark );
+
+               // Validate it will run path 5.
+               $this->assertFalse( wp_cache_get( self::$bookmark->link_id, 'bookmark' ) );
+               $this->assertArrayNotHasKey( 'link', $GLOBALS );
+
+               // Run the function and test results.
+               $actual_bookmark = get_bookmark( ...$args );
+
+               /*
+                * For non-array output type, use assetEquals. Why? The object pulled from the database will have the same
+                * property values but will be a different object than the expected object.
+                */
+               if ( is_object( $expected ) ) {
+                       $this->assertEquals( $expected, $actual_bookmark );
+               } else {
+                       $this->assertSameSets( $expected, $actual_bookmark );
+               }
+
+               // Check the bookmark was cached.
+               $actual_cache = wp_cache_get( self::$bookmark->link_id, 'bookmark' );
+               $this->assertEquals( self::$bookmark, $actual_cache );
+       }
+
+       /**
+        * Path 3's data provider which covers the "else" branch, i.e. when the bookmark argument is not empty and
+        * not an object.
+        */
+       public function data_when_else() {
+               return array(
+                       // Unhappy path.
+                       'with invalid output'                => array(
+                               array(
+                                       'output' => 'invalid',
+                               ),
+                       ),
+                       'with invalid filter'                => array(
+                               array(
+                                       'filter' => 'invalid',
+                               ),
+                       ),
+                       // Happy path.
+                       'with defaults'                      => array(
+                               array(),
+                       ),
+                       'with non-default output'            => array(
+                               array(
+                                       'output' => ARRAY_A,
+                               ),
+                       ),
+                       'with non-default filter'            => array(
+                               array(
+                                       'filter' => 'display',
+                               ),
+                       ),
+                       'with non-default output and filter' => array(
+                               array(
+                                       'output' => ARRAY_N,
+                                       'filter' => 'display',
+                               ),
+                       ),
+               );
+       }
+
+       /**
+        * Initialize the get_bookmark's function arguments to match the order of the function's signature and
+        * reduce code in the tests.
+        *
+        * @param array        $args     Function argument list.
+        * @param int|stdClass $bookmark Optional. Bookmark's cache key or instance.
+        * @return array Ordered argument list.
+        */
+       private function init_func_args( array $args, $bookmark = null ) {
+               // The defaults sets the order to match the function's arguments as well as setting the default values.
+               $defaults = array(
+                       'bookmark' => self::$bookmark,
+                       'output'   => OBJECT,
+                       'filter'   => 'raw',
+               );
+               $args     = array_merge( $defaults, $args );
+
+               // When given a bookmark, use it.
+               if ( ! is_null( $bookmark ) ) {
+                       $args['bookmark'] = $bookmark;
+               }
+
+               /*
+                * Strip out the keys. Why? The splat operator (...) does not work with associative arrays,
+                * except for in PHP 8 where the keys are named arguments.
+                */
+               return array_values( $args );
+       }
+
+       /**
+        * Maybe format the bookmark's expected data.
+        *
+        * @param array             $args     Function argument list.
+        * @param int|stdClass|null $bookmark Optional. Bookmark's cache key or instance.
+        * @return array|stdClass bookmark's data.
+        */
+       private function maybe_format_expected_data( array $args, $bookmark = null ) {
+               if ( is_null( $bookmark ) ) {
+                       $bookmark = self::$bookmark;
+               }
+
+               switch ( $args[1] ) {
+                       case ARRAY_A:
+                       case ARRAY_N:
+                               $expected = get_object_vars( $bookmark );
+
+                               if ( ARRAY_N === $args[1] ) {
+                                       $expected = array_values( $expected );
+                               }
+
+                               return $expected;
+                       default:
+                               return $bookmark;
+               }
+       }
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: trunk/tests/phpunit/tests/bookmark/getBookmark.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
<a id="svneolstyle"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: svn:eol-style</h4></div>
<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span></div>

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