PluginProperties: Add support for Requires Plugins header (#41)

Author: tfrommen

src/Properties/PluginProperties.php

@@ -17,6 +17,7 @@ class PluginProperties extends BaseProperties
      * Custom properties for Plugins.
      */
     public const PROP_NETWORK = 'network';
+    public const PROP_REQUIRES_PLUGINS = 'requiresPlugins';
     /**
      * Available methods of Properties::__call()
      * from plugin headers.
@@ -37,6 +38,7 @@ class PluginProperties extends BaseProperties
 
         // additional headers
         self::PROP_NETWORK => 'Network',
+        self::PROP_REQUIRES_PLUGINS => 'RequiresPlugins',
     ];
 
     /**
@@ -84,7 +86,7 @@ protected function __construct(string $pluginMainFile)
         if (!function_exists('get_plugin_data')) {
             require_once ABSPATH . 'wp-admin/includes/plugin.php';
         }
-        
+
         // $markup = false, to avoid an incorrect early wptexturize call. Also we probably don't want HTML here anyway
         // @see https://core.trac.wordpress.org/ticket/49965
         $pluginData = get_plugin_data($pluginMainFile, false);
@@ -129,6 +131,16 @@ public function network(): bool
         return (bool) $this->get(self::PROP_NETWORK, false);
     }
 
+    /**
+     * @return array
+     */
+    public function requiresPlugins(): array
+    {
+        $value = $this->get(self::PROP_REQUIRES_PLUGINS);
+
+        return $value && is_string($value) ? explode(',', $value) : [];
+    }
+
     /**
      * @return bool
      */

tests/unit/Properties/PluginPropertiesTest.php

@@ -74,6 +74,61 @@ public function testBasic(): void
         static::assertSame($expectedPluginMainFile, $testee->pluginMainFile());
     }
 
+    /**
+     * @param string $requiresPlugins
+     * @param array $expected
+     *
+     * @test
+     *
+     * @runInSeparateProcess
+     *
+     * @dataProvider provideRequiresPluginsData
+     */
+    public function testRequiresPlugins(string $requiresPlugins, array $expected): void
+    {
+        $pluginMainFile = '/app/wp-content/plugins/plugin-dir/plugin-name.php';
+        $expectedBaseName = 'plugin-dir/plugin-name.php';
+
+        Functions\expect('get_plugin_data')->andReturn([
+            'RequiresPlugins' => $requiresPlugins,
+        ]);
+        Functions\when('plugins_url')->returnArg(1);
+        Functions\expect('plugin_basename')->andReturn($expectedBaseName);
+        Functions\when('plugin_dir_path')->returnArg(1);
+
+        Functions\expect('wp_normalize_path')->andReturnFirstArg();
+
+        $testee = PluginProperties::new($pluginMainFile);
+        static::assertEquals($expected, $testee->requiresPlugins());
+    }
+
+    /**
+     * @return array[]
+     */
+    public function provideRequiresPluginsData(): array
+    {
+        return [
+            'no dependencies' => [
+                '',
+                [],
+            ],
+            'one dependency' => [
+                'dependency',
+                [
+                    'dependency',
+                ],
+            ],
+            'multiple dependencies' => [
+                'dependency1,dependency2,dependency3',
+                [
+                    'dependency1',
+                    'dependency2',
+                    'dependency3',
+                ],
+            ],
+        ];
+    }
+
     /**
      * @test
      */