Convert og_is_member to Og:isMember and add test coverage

og.module

@@ -1912,30 +1912,6 @@ function _og_get_all_group_content_bundle() {
   return $return;
 }
 
-/**
- * Return TRUE if entity belongs to a group.
- *
- * @param $group_type
- *   The entity type of the group.
- * @param $gid
- *   The group ID.
- * @param $entity_type
- *   The entity type.
- * @param $entity
- *   The entity object. If empty the current user will be used.
- * @param $states
- *   (optional) Array with the state to return. If empty groups of all state will
- *   return.
- *
- * @return
- *   TRUE if the entity (e.g. the user) belongs to a group and is not pending or
- *   blocked.
- */
-function _og_is_member($group_type, $gid, $entity_type = 'user', $entity = NULL, $states = array(OG_STATE_ACTIVE)) {
-  $groups = og_get_entity_groups($entity_type, $entity, $states);
-  return !empty($groups[$group_type]) && in_array($gid, $groups[$group_type]);
-}
-
 /**
  * Check if group should use default roles and permissions.
  *

src/Og.php

@@ -9,6 +9,7 @@
 
 use Drupal\Component\Render\FormattableMarkup;
 use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Field\FieldConfigInterface;
 use Drupal\Core\Field\FieldDefinitionInterface;
 use Drupal\field\Entity\FieldConfig;
@@ -103,10 +104,8 @@ public static function createField($plugin_id, $entity_type, $bundle, array $set
   /**
    * Gets the groups an entity is associated with.
    *
-   * @param $entity_type
-   *   The entity type.
-   * @param $entity_id
-   *   The entity ID.
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The entity to get groups for.
    * @param $states
    *   (optional) Array with the state to return. Defaults to active.
    * @param $field_name
@@ -117,7 +116,10 @@ public static function createField($plugin_id, $entity_type, $bundle, array $set
    *  the OG membership ID and the group ID as the value. If nothing found,
    *  then an empty array.
    */
-  public static function getEntityGroups($entity_type, $entity_id, $states = [OG_STATE_ACTIVE], $field_name = NULL) {
+  public static function getEntityGroups(EntityInterface $entity, $states = [OG_STATE_ACTIVE], $field_name = NULL) {
+    $entity_type = $entity->getEntityTypeId();
+    $entity_id = $entity->id();
+
     // Get a string identifier of the states, so we can retrieve it from cache.
     if ($states) {
       sort($states);
@@ -168,6 +170,31 @@ public static function getEntityGroups($entity_type, $entity_id, $states = [OG_S
     return static::$entityGroupCache[$identifier];
   }
 
+  /**
+   * Return TRUE if entity belongs to a group.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $group
+   *   The group entity to check.
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The entity to get groups for.
+   * @param array $states
+   *   (optional) Array with the state to return. If empty groups of all state
+   *   will return.
+   *
+   * @return bool
+   *   TRUE if the entity (e.g. the user) belongs to a group and is not pending
+   *   or blocked.
+   */
+  public static function isMember(EntityInterface $group, EntityInterface $entity, $states = [OG_STATE_ACTIVE]) {
+    $groups = static::getEntityGroups($entity, $states);
+    $group_entity_type = $group->getEntityTypeId();
+    // We need to create a map of the group ids as getEntityGroups returns a map
+    // of membership_id => group entity for each type.
+    return !empty($groups[$group_entity_type]) && in_array($group->id(), array_map(function($group_entity) {
+      return $group_entity->id();
+    }, $groups[$group_entity_type]));
+  }
+
   /**
    * Check if the given entity type and bundle is a group.
    *

src/Plugin/EntityReferenceSelection/OgSelection.php

@@ -127,7 +127,7 @@ public function getConfiguration($key = NULL) {
    * @return ContentEntityInterface[]
    */
   protected function getUserGroups() {
-    $other_groups = Og::getEntityGroups('user', $this->currentUser->id());
+    $other_groups = Og::getEntityGroups($this->currentUser->getAccount());
     return isset($other_groups[$this->configuration['target_type']]) ? $other_groups[$this->configuration['target_type']] : [];
   }
 

src/Plugin/Field/FieldWidget/OgComplex.php

@@ -72,7 +72,7 @@ protected function formMultipleElements(FieldItemListInterface $items, array &$f
     $parents = $form['#parents'];
 
     $target_type = $this->fieldDefinition->getTargetEntityTypeId();
-    $user_groups = Og::getEntityGroups('user', \Drupal::currentUser()->id());
+    $user_groups = Og::getEntityGroups(\Drupal::currentUser()->getAccount());
     $user_groups_target_type = isset($user_groups[$target_type]) ? $user_groups[$target_type] : [];
     $user_group_ids = array_map(function($group) {
       return $group->id();
@@ -228,7 +228,7 @@ protected function otherGroupsWidget(FieldItemListInterface $items, FormStateInt
 
     $target_type = $this->fieldDefinition->getTargetEntityTypeId();
 
-    $user_groups = Og::getEntityGroups('user', \Drupal::currentUser()->id());
+    $user_groups = Og::getEntityGroups(\Drupal::currentUser()->getAccount());
     $user_groups_target_type = isset($user_groups[$target_type]) ? $user_groups[$target_type] : [];
     $user_group_ids = array_map(function($group) {
       return $group->id();

tests/src/Kernel/Entity/EntityGroupsTest.php

@@ -0,0 +1,216 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Tests\og\Kernel\Entity\EntityGroupsTest.
+ */
+
+namespace Drupal\Tests\og\Kernel\Entity;
+
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\KernelTests\KernelTestBase;
+use Drupal\Component\Utility\Unicode;
+use Drupal\og\Entity\OgMembership;
+use Drupal\og\Og;
+use Drupal\user\Entity\User;
+
+/**
+ * Tests entity group methods
+ *
+ * @group og
+ */
+class EntityGroupsTest extends KernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['system', 'user', 'field', 'og', 'entity_test'];
+
+  /**
+   * @var \Drupal\user\Entity\User
+   */
+  protected $user1;
+
+  /**
+   * @var \Drupal\user\Entity\User
+   */
+  protected $user2;
+
+  /**
+   * @var \Drupal\user\Entity\User
+   */
+  protected $user3;
+
+  /**
+   * @var \Drupal\entity_test\Entity\EntityTest
+   */
+  protected $group1;
+
+  /**
+   * @var \Drupal\entity_test\Entity\EntityTest
+   */
+  protected $group2;
+
+  /**
+   * The machine name of the group node type.
+   *
+   * @var string
+   */
+  protected $groupBundle;
+
+  /**
+   * The machine name of the group content node type.
+   *
+   * @var string
+   */
+  protected $groupContentBundle;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installConfig(['og']);
+    $this->installEntitySchema('og_membership');
+    $this->installEntitySchema('user');
+    $this->installEntitySchema('entity_test');
+    $this->installSchema('system', 'sequences');
+
+    $this->groupBundle = Unicode::strtolower($this->randomMachineName());
+    $this->groupContentBundle = Unicode::strtolower($this->randomMachineName());
+
+    // Create users.
+    $this->user1 = User::create(['name' => $this->randomString()]);
+    $this->user1->save();
+
+    $this->user2 = User::create(['name' => $this->randomString()]);
+    $this->user2->save();
+
+    $this->user3 = User::create(['name' => $this->randomString()]);
+    $this->user3->save();
+
+    // Define the group content as group.
+    Og::groupManager()->addGroup('entity_test', $this->groupBundle);
+
+    // Create a group and associate with user 1.
+    $this->group1 = EntityTest::create([
+      'type' => $this->groupBundle,
+      'name' => $this->randomString(),
+      'user_id' => $this->user1->id(),
+    ]);
+    $this->group1->save();
+
+    // Create a group and associate with user 2.
+    $this->group2 = EntityTest::create([
+      'type' => $this->groupBundle,
+      'name' => $this->randomString(),
+      'user_id' => $this->user2->id(),
+    ]);
+    $this->group2->save();
+  }
+
+  /**
+   * Tests group owners have the correct groups.
+   */
+  public function testOwnerGroupsOnly() {
+    $actual = Og::getEntityGroups($this->user1);
+
+    $this->assertCount(1, $actual['entity_test']);
+    $this->assertGroupExistsInResults($this->group1, $actual);
+
+    // Also check isMember.
+    $this->assertTrue(Og::isMember($this->group1, $this->user1));
+    $this->assertFalse(Og::isMember($this->group1, $this->user2));
+
+    $actual = Og::getEntityGroups($this->user2);
+
+    $this->assertCount(1, $actual['entity_test']);
+    $this->assertGroupExistsInResults($this->group2, $actual);
+
+    // Also check isMember.
+    $this->assertTrue(Og::isMember($this->group2, $this->user2));
+    $this->assertFalse(Og::isMember($this->group2, $this->user1));
+  }
+
+  /**
+   * Tests other groups users are added to.
+   */
+  public function testOtherGroups() {
+    // Should be a part of no groups.
+    $this->assertEquals([], Og::getEntityGroups($this->user3));
+    $this->assertFalse(Og::isMember($this->group1, $this->user3));
+    $this->assertFalse(Og::isMember($this->group2, $this->user3));
+
+    // Invalidate the caches so the static cache is cleared and group data is
+    // fetched again for the user.
+    Og::invalidateCache();
+
+    // Add user to group 1 should now return that group only.
+    $this->createMembership($this->user3, $this->group1);
+
+    $actual = Og::getEntityGroups($this->user3);
+
+    $this->assertCount(1, $actual['entity_test']);
+    $this->assertGroupExistsInResults($this->group1, $actual);
+
+    $this->assertTrue(Og::isMember($this->group1, $this->user3));
+    $this->assertFalse(Og::isMember($this->group2, $this->user3));
+
+    Og::invalidateCache();
+
+    // Add to group 2 should also return that.
+    $this->createMembership($this->user3, $this->group2);
+
+    $actual = Og::getEntityGroups($this->user3);
+
+    $this->assertCount(2, $actual['entity_test']);
+    $this->assertGroupExistsInResults($this->group1, $actual);
+    $this->assertGroupExistsInResults($this->group2, $actual);
+
+    $this->assertTrue(Og::isMember($this->group1, $this->user3));
+    $this->assertTrue(Og::isMember($this->group2, $this->user3));
+  }
+
+  /**
+   * Creates an Og membership entity.
+   *
+   * @todo This is a temp function, which will be later replaced by Og::group().
+   *
+   * @param \Drupal\user\Entity\User $user
+   * @param \Drupal\Core\Entity\EntityInterface $group
+   *
+   * @return \Drupal\og\Entity|OgMembership
+   */
+  protected function createMembership($user, $group) {
+    $membership = OgMembership::create(['type' => OG_MEMBERSHIP_TYPE_DEFAULT])
+      ->setEntityId($user->id())
+      ->setEntityType('user')
+      ->setGid($group->id())
+      ->setGroupType($group->getEntityTypeId())
+      ->save();
+
+    return $membership;
+  }
+
+  /**
+   * Asserts whether a group ID exists in some results.
+   *
+   * Assumes entity_type is used.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $group_to_check
+   * @param array $results
+   */
+  protected function assertGroupExistsInResults($group_to_check, array $results) {
+    $found = FALSE;
+    foreach ($results['entity_test'] as $group) {
+      if ($group->id() == $group_to_check->id()) {
+        $found = TRUE;
+        break;
+      }
+    }
+
+    $this->assertTrue($found);
+  }
+
+}