[MINOR BC BREAK] Syncing: PivotWithRelation -> PivotWithCentralResource

The old names of the class and method were misleading. We don't
actually need any relation. And we don't even need a model instance
as we were returning previously -- the only use of that method was
in TriggerSyncingEvents which would immediately use ::class on the
returned value. Therefore, all we are asking for in this interface
is just the central resource class.

assets/TenancyServiceProvider.stub.php

@@ -81,6 +81,8 @@ class TenancyServiceProvider extends ServiceProvider
                 ])->send(function (Events\TenantDeleted $event) {
                     return $event->tenant;
                 })->shouldBeQueued(false),
+
+                // ResourceSyncing\Listeners\DeleteAllTenantMappings::class,
             ],
 
             Events\TenantMaintenanceModeEnabled::class => [],
@@ -129,6 +131,9 @@ class TenancyServiceProvider extends ServiceProvider
             ResourceSyncing\Events\SyncedResourceSaved::class => [
                 ResourceSyncing\Listeners\UpdateOrCreateSyncedResource::class,
             ],
+            ResourceSyncing\Events\SyncedResourceDeleted::class => [
+                ResourceSyncing\Listeners\DeleteResourceMapping::class,
+            ],
             ResourceSyncing\Events\SyncMasterDeleted::class => [
                 ResourceSyncing\Listeners\DeleteResourcesInTenants::class,
             ],
@@ -141,7 +146,9 @@ class TenancyServiceProvider extends ServiceProvider
             ResourceSyncing\Events\CentralResourceDetachedFromTenant::class => [
                 ResourceSyncing\Listeners\DeleteResourceInTenant::class,
             ],
-            // Fired only when a synced resource is changed in a different DB than the origin DB (to avoid infinite loops)
+
+            // Fired only when a synced resource is changed (as a result of syncing)
+            // in a different DB than DB from which the change originates (to avoid infinite loops)
             ResourceSyncing\Events\SyncedResourceSavedInForeignDatabase::class => [],
 
             // Storage symlinks

src/ResourceSyncing/CentralResourceNotAvailableInPivotException.php

@@ -13,7 +13,7 @@ class CentralResourceNotAvailableInPivotException extends Exception
         parent::__construct(
             'Central resource is not accessible in pivot model.
             To attach a resource to a tenant, use $centralResource->tenants()->attach($tenant) instead of $tenant->resources()->attach($centralResource) (same for detaching).
-            To make this work both ways, you can make your pivot implement PivotWithRelation and return the related model in getRelatedModel() or extend MorphPivot.'
+            To make this work both ways, you can make your pivot implement PivotWithCentralResource and return the related model in getCentralResourceClass() or extend MorphPivot.'
         );
     }
 }

src/ResourceSyncing/Events/SyncedResourceDeleted.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\ResourceSyncing\Events;
+
+use Illuminate\Database\Eloquent\Model;
+use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
+use Stancl\Tenancy\ResourceSyncing\Syncable;
+
+class SyncedResourceDeleted
+{
+    public function __construct(
+        public Syncable&Model $model,
+        public TenantWithDatabase|null $tenant,
+        public bool $forceDelete,
+    ) {}
+}

src/ResourceSyncing/Listeners/DeleteAllTenantMappings.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\ResourceSyncing\Listeners;
+
+use Illuminate\Support\Facades\DB;
+use Stancl\Tenancy\Events\TenantDeleted;
+use Stancl\Tenancy\Listeners\QueueableListener;
+
+/**
+ * Cleans up pivot records related to the deleted tenant.
+ *
+ * The listener only cleans up the pivot tables specified
+ * in the $pivotTables property (see the property for details),
+ * and is intended for use with tables that do not have tenant
+ * foreign key constraints with onDelete('cascade').
+ */
+class DeleteAllTenantMappings extends QueueableListener
+{
+    /**
+     * Pivot tables to clean up after a tenant is deleted, in the
+     * ['table_name' => 'tenant_key_column'] format.
+     *
+     * Since we cannot automatically detect which pivot tables
+     * are being used, they have to be specified here manually.
+     *
+     * The default value follows the polymorphic table used by default.
+     */
+    public static array $pivotTables = ['tenant_resources' => 'tenant_id'];
+
+    public function handle(TenantDeleted $event): void
+    {
+        foreach (static::$pivotTables as $table => $tenantKeyColumn) {
+            DB::table($table)->where($tenantKeyColumn, $event->tenant->getKey())->delete();
+        }
+    }
+}

src/ResourceSyncing/Listeners/DeleteResourceMapping.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\ResourceSyncing\Listeners;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\Pivot;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Stancl\Tenancy\Listeners\QueueableListener;
+use Stancl\Tenancy\ResourceSyncing\Events\SyncedResourceDeleted;
+use Stancl\Tenancy\ResourceSyncing\Syncable;
+use Stancl\Tenancy\ResourceSyncing\SyncMaster;
+
+/**
+ * Deletes pivot records when a synced resource is deleted.
+ *
+ * If a SyncMaster (central resource) is deleted, all pivot records for that resource are deleted.
+ * If a Syncable (tenant resource) is deleted, only delete the pivot record for that tenant.
+ */
+class DeleteResourceMapping extends QueueableListener
+{
+    public static bool $shouldQueue = false;
+
+    public function handle(SyncedResourceDeleted $event): void
+    {
+        $centralResource = $this->getCentralResource($event->model);
+
+        if (! $centralResource) {
+            return;
+        }
+
+        // Delete pivot records if the central resource doesn't use soft deletes
+        // or the central resource was deleted using forceDelete()
+        if ($event->forceDelete || ! in_array(SoftDeletes::class, class_uses_recursive($centralResource::class), true)) {
+            Pivot::withoutEvents(function () use ($centralResource, $event) {
+                // If detach() is called with null -- if $event->tenant is null -- this means a central resource was deleted and detaches all tenants.
+                // If detach() is called with a specific tenant, it means the resource was deleted in that tenant, and we only delete that single mapping.
+                $centralResource->tenants()->detach($event->tenant);
+            });
+        }
+    }
+
+    public function getCentralResource(Syncable&Model $resource): SyncMaster|null
+    {
+        if ($resource instanceof SyncMaster) {
+            return $resource;
+        }
+
+        $centralResourceClass = $resource->getCentralModelName();
+
+        /** @var (SyncMaster&Model)|null $centralResource */
+        $centralResource = $centralResourceClass::firstWhere(
+            $resource->getGlobalIdentifierKeyName(),
+            $resource->getGlobalIdentifierKey()
+        );
+
+        return $centralResource;
+    }
+}

src/ResourceSyncing/Listeners/DeleteResourcesInTenants.php

@@ -4,7 +4,6 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\ResourceSyncing\Listeners;
 
-use Illuminate\Database\Eloquent\SoftDeletes;
 use Stancl\Tenancy\Listeners\QueueableListener;
 use Stancl\Tenancy\ResourceSyncing\Events\SyncMasterDeleted;
 
@@ -21,12 +20,6 @@ class DeleteResourcesInTenants extends QueueableListener
 
         tenancy()->runForMultiple($centralResource->tenants()->cursor(), function () use ($centralResource, $forceDelete) {
             $this->deleteSyncedResource($centralResource, $forceDelete);
-
-            // Delete pivot records if the central resource doesn't use soft deletes
-            // or the central resource was deleted using forceDelete()
-            if ($forceDelete || ! in_array(SoftDeletes::class, class_uses_recursive($centralResource::class), true)) {
-                $centralResource->tenants()->detach(tenant());
-            }
         });
     }
 }

src/ResourceSyncing/PivotWithCentralResource.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stancl\Tenancy\ResourceSyncing;
+
+interface PivotWithCentralResource
+{
+    /** @return class-string<\Illuminate\Database\Eloquent\Model&Syncable> */
+    public function getCentralResourceClass(): string;
+}

src/ResourceSyncing/PivotWithRelation.php

@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Stancl\Tenancy\ResourceSyncing;
-
-use Illuminate\Database\Eloquent\Model;
-
-interface PivotWithRelation
-{
-    /**
-     * E.g. return $this->users()->getModel().
-     */
-    public function getRelatedModel(): Model;
-}

src/ResourceSyncing/ResourceSyncing.php

@@ -11,6 +11,7 @@ use Stancl\Tenancy\Contracts\UniqueIdentifierGenerator;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
 use Stancl\Tenancy\ResourceSyncing\Events\CentralResourceAttachedToTenant;
 use Stancl\Tenancy\ResourceSyncing\Events\CentralResourceDetachedFromTenant;
+use Stancl\Tenancy\ResourceSyncing\Events\SyncedResourceDeleted;
 use Stancl\Tenancy\ResourceSyncing\Events\SyncedResourceSaved;
 use Stancl\Tenancy\ResourceSyncing\Events\SyncMasterDeleted;
 use Stancl\Tenancy\ResourceSyncing\Events\SyncMasterRestored;
@@ -19,37 +20,34 @@ trait ResourceSyncing
 {
     public static function bootResourceSyncing(): void
     {
-        static::saved(function (Syncable&Model $model) {
+        static::saved(static function (Syncable&Model $model) {
             if ($model->shouldSync() && ($model->wasRecentlyCreated || $model->wasChanged($model->getSyncedAttributeNames()))) {
                 $model->triggerSyncEvent();
             }
         });
 
-        static::deleting(function (Syncable&Model $model) {
+        static::deleted(static function (Syncable&Model $model) {
-            if ($model->shouldSync() && $model instanceof SyncMaster) {
+            if ($model->shouldSync()) {
                 $model->triggerDeleteEvent();
             }
         });
 
-        static::creating(function (Syncable&Model $model) {
+        static::creating(static function (Syncable&Model $model) {
-            if (! $model->getAttribute($model->getGlobalIdentifierKeyName()) && app()->bound(UniqueIdentifierGenerator::class)) {
+            if (! $model->getAttribute($model->getGlobalIdentifierKeyName())) {
-                $model->setAttribute(
+                $model->generateGlobalIdentifierKey();
-                    $model->getGlobalIdentifierKeyName(),
-                    app(UniqueIdentifierGenerator::class)->generate($model)
-                );
             }
         });
 
         if (in_array(SoftDeletes::class, class_uses_recursive(static::class), true)) {
-            static::forceDeleting(function (Syncable&Model $model) {
+            static::forceDeleting(static function (Syncable&Model $model) {
-                if ($model->shouldSync() && $model instanceof SyncMaster) {
+                if ($model->shouldSync()) {
                     $model->triggerDeleteEvent(true);
                 }
             });
 
-            static::restoring(function (Syncable&Model $model) {
+            static::restoring(static function (Syncable&Model $model) {
-                if ($model->shouldSync() && $model instanceof SyncMaster) {
+                if ($model instanceof SyncMaster && $model->shouldSync()) {
-                    $model->triggerRestoredEvent();
+                    $model->triggerRestoreEvent();
                 }
             });
         }
@@ -67,9 +65,11 @@ trait ResourceSyncing
             /** @var SyncMaster&Model $this */
             event(new SyncMasterDeleted($this, $forceDelete));
         }
+
+        event(new SyncedResourceDeleted($this, tenant(), $forceDelete));
     }
 
-    public function triggerRestoredEvent(): void
+    public function triggerRestoreEvent(): void
     {
         if ($this instanceof SyncMaster && in_array(SoftDeletes::class, class_uses_recursive($this), true)) {
             /** @var SyncMaster&Model $this */
@@ -116,8 +116,18 @@ trait ResourceSyncing
         return 'global_id';
     }
 
-    public function getGlobalIdentifierKey(): string
+    public function getGlobalIdentifierKey(): string|int
     {
         return $this->getAttribute($this->getGlobalIdentifierKeyName());
     }
+
+    protected function generateGlobalIdentifierKey(): void
+    {
+        if (! app()->bound(UniqueIdentifierGenerator::class)) return;
+
+        $this->setAttribute(
+            $this->getGlobalIdentifierKeyName(),
+            app(UniqueIdentifierGenerator::class)->generate($this),
+        );
+    }
 }

src/ResourceSyncing/SyncMaster.php

@@ -25,7 +25,5 @@ interface SyncMaster extends Syncable
 
     public function triggerAttachEvent(TenantWithDatabase&Model $tenant): void;
 
-    public function triggerDeleteEvent(bool $forceDelete = false): void;
+    public function triggerRestoreEvent(): void;
-
-    public function triggerRestoredEvent(): void;
 }

src/ResourceSyncing/Syncable.php

@@ -16,6 +16,8 @@ interface Syncable
 
     public function triggerSyncEvent(): void;
 
+    public function triggerDeleteEvent(bool $forceDelete = false): void;
+
     /**
      * Get the attributes used for creating the *other* model (i.e. tenant if this is the central one, and central if this is the tenant one).
      *

src/ResourceSyncing/TriggerSyncingEvents.php

@@ -20,14 +20,14 @@ trait TriggerSyncingEvents
 {
     public static function bootTriggerSyncingEvents(): void
     {
-        static::saving(function (self $pivot) {
+        static::saving(static function (self $pivot) {
             // Try getting the central resource to see if it is available
             // If it is not available, throw an exception to interrupt the saving process
             // And prevent creating a pivot record without a central resource
             $pivot->getCentralResourceAndTenant();
         });
 
-        static::saved(function (self $pivot) {
+        static::saved(static function (self $pivot) {
             /**
              * @var static&Pivot $pivot
              * @var SyncMaster|null $centralResource
@@ -40,7 +40,7 @@ trait TriggerSyncingEvents
             }
         });
 
-        static::deleting(function (self $pivot) {
+        static::deleting(static function (self $pivot) {
             /**
              * @var static&Pivot $pivot
              * @var SyncMaster|null $centralResource
@@ -79,9 +79,9 @@ trait TriggerSyncingEvents
      */
     protected function getResourceClass(): string
     {
-        /** @var $this&(Pivot|MorphPivot|((Pivot|MorphPivot)&PivotWithRelation)) $this */
+        /** @var $this&(Pivot|MorphPivot|((Pivot|MorphPivot)&PivotWithCentralResource)) $this */
-        if ($this instanceof PivotWithRelation) {
+        if ($this instanceof PivotWithCentralResource) {
-            return $this->getRelatedModel()::class;
+            return $this->getCentralResourceClass();
         }
 
         if ($this instanceof MorphPivot) {

tests/Etc/ResourceSyncing/CentralUser.php

@@ -12,6 +12,7 @@ use Stancl\Tenancy\ResourceSyncing\SyncMaster;
 class CentralUser extends Model implements SyncMaster
 {
     use ResourceSyncing, CentralConnection;
+
     protected $guarded = [];
 
     public $timestamps = false;

tests/Etc/ResourceSyncing/CustomPivot.php

@@ -4,20 +4,13 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Tests\Etc\ResourceSyncing;
 
-use Illuminate\Database\Eloquent\Model;
+use Stancl\Tenancy\ResourceSyncing\PivotWithCentralResource;
-use Illuminate\Database\Eloquent\Relations\BelongsToMany;
-use Stancl\Tenancy\ResourceSyncing\PivotWithRelation;
 use Stancl\Tenancy\ResourceSyncing\TenantPivot;
 
-class CustomPivot extends TenantPivot implements PivotWithRelation
+class CustomPivot extends TenantPivot implements PivotWithCentralResource
 {
-    public function users(): BelongsToMany
+    public function getCentralResourceClass(): string
     {
-        return $this->belongsToMany(CentralUser::class);
+        return CentralUser::class;
-    }
-
-    public function getRelatedModel(): Model
-    {
-        return $this->users()->getModel();
     }
 }

tests/Etc/synced_resource_migrations/2020_05_11_000002_create_tenant_users_table.php

@@ -16,9 +16,6 @@ class CreateTenantUsersTable extends Migration
             $table->string('global_user_id');
 
             $table->unique(['tenant_id', 'global_user_id']);
-
-            $table->foreign('tenant_id')->references('id')->on('tenants')->onUpdate('cascade')->onDelete('cascade');
-            $table->foreign('global_user_id')->references('global_id')->on('users')->onUpdate('cascade')->onDelete('cascade');
         });
     }
 

tests/ResourceSyncingTest.php

@@ -46,6 +46,12 @@ use Stancl\Tenancy\ResourceSyncing\Events\SyncedResourceSavedInForeignDatabase;
 use Illuminate\Database\Eloquent\Scope;
 use Illuminate\Database\QueryException;
 use function Stancl\Tenancy\Tests\pest;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Stancl\Tenancy\Events\TenantDeleted;
+use Stancl\Tenancy\ResourceSyncing\Events\SyncedResourceDeleted;
+use Stancl\Tenancy\ResourceSyncing\Listeners\DeleteAllTenantMappings;
+use Stancl\Tenancy\ResourceSyncing\Listeners\DeleteResourceMapping;
 
 beforeEach(function () {
     config(['tenancy.bootstrappers' => [
@@ -69,6 +75,7 @@ beforeEach(function () {
     CreateTenantResource::$shouldQueue = false;
     DeleteResourceInTenant::$shouldQueue = false;
     UpdateOrCreateSyncedResource::$scopeGetModelQuery = null;
+    DeleteAllTenantMappings::$pivotTables = ['tenant_resources' => 'tenant_id'];
 
     // Reset global scopes on models (should happen automatically but to make this more explicit)
     Model::clearBootedModels();
@@ -92,6 +99,7 @@ beforeEach(function () {
     CentralUser::$creationAttributes = $creationAttributes;
 
     Event::listen(SyncedResourceSaved::class, UpdateOrCreateSyncedResource::class);
+    Event::listen(SyncedResourceDeleted::class, DeleteResourceMapping::class);
     Event::listen(SyncMasterDeleted::class, DeleteResourcesInTenants::class);
     Event::listen(SyncMasterRestored::class, RestoreResourcesInTenants::class);
     Event::listen(CentralResourceAttachedToTenant::class, CreateTenantResource::class);
@@ -255,7 +263,7 @@ test('attaching central resources to tenants or vice versa creates synced tenant
         expect(TenantUser::all())->toHaveCount(0);
     });
 
-    // Attaching resources to tenants requires using a pivot that implements the PivotWithRelation interface
+    // Attaching resources to tenants requires using a pivot that implements the PivotWithCentralResource interface
     $tenant->customPivotUsers()->attach($createCentralUser());
     $createCentralUser()->tenants()->attach($tenant);
 
@@ -279,7 +287,7 @@ test('detaching central users from tenants or vice versa force deletes the synce
     migrateUsersTableForTenants();
 
     if ($attachUserToTenant) {
-        // Attaching resources to tenants requires using a pivot that implements the PivotWithRelation interface
+        // Attaching resources to tenants requires using a pivot that implements the PivotWithCentralResource interface
         $tenant->customPivotUsers()->attach($centralUser);
     } else {
         $centralUser->tenants()->attach($tenant);
@@ -290,7 +298,7 @@ test('detaching central users from tenants or vice versa force deletes the synce
     });
 
     if ($attachUserToTenant) {
-        // Detaching resources from tenants requires using a pivot that implements the PivotWithRelation interface
+        // Detaching resources from tenants requires using a pivot that implements the PivotWithCentralResource interface
         $tenant->customPivotUsers()->detach($centralUser);
     } else {
         $centralUser->tenants()->detach($tenant);
@@ -325,7 +333,7 @@ test('detaching central users from tenants or vice versa force deletes the synce
     });
 
     if ($attachUserToTenant) {
-        // Detaching resources from tenants requires using a pivot that implements the PivotWithRelation interface
+        // Detaching resources from tenants requires using a pivot that implements the PivotWithCentralResource interface
         $tenant->customPivotUsers()->detach($centralUserWithSoftDeletes);
     } else {
         $centralUserWithSoftDeletes->tenants()->detach($tenant);
@@ -890,7 +898,54 @@ test('deleting SyncMaster automatically deletes its Syncables', function (bool $
     'basic pivot' => false,
 ]);
 
-test('tenant pivot records are deleted along with the tenants to which they belong to', function() {
+test('tenant pivot records are deleted along with the tenants to which they belong', function (bool $dbLevelOnCascadeDelete, bool $morphPivot) {
+    [$tenant] = createTenantsAndRunMigrations();
+
+    if ($morphPivot) {
+        config(['tenancy.models.tenant' => MorphTenant::class]);
+        $centralUserModel = BaseCentralUser::class;
+
+        // The default pivot table, no need to configure the listener
+        $pivotTable = 'tenant_resources';
+    } else {
+        $centralUserModel = CentralUser::class;
+
+        // Custom pivot table
+        $pivotTable = 'tenant_users';
+    }
+
+    if ($dbLevelOnCascadeDelete) {
+        addTenantIdConstraintToPivot($pivotTable);
+    } else {
+        // Event-based cleanup
+        Event::listen(TenantDeleted::class, DeleteAllTenantMappings::class);
+
+        DeleteAllTenantMappings::$pivotTables = [$pivotTable => 'tenant_id'];
+    }
+
+    $syncMaster = $centralUserModel::create([
+        'global_id' => 'user',
+        'name' => 'Central user',
+        'email' => 'central@localhost',
+        'password' => 'password',
+        'role' => 'user',
+    ]);
+
+    $syncMaster->tenants()->attach($tenant);
+
+    // Pivot records should be deleted along with the tenant
+    $tenant->delete();
+
+    expect(DB::select("SELECT * FROM {$pivotTable} WHERE tenant_id = ?", [$tenant->getTenantKey()]))->toHaveCount(0);
+})->with([
+    'db level on cascade delete' => true,
+    'event-based on cascade delete' => false,
+])->with([
+    'polymorphic pivot' => true,
+    'basic pivot' => false,
+]);
+
+test('pivot record is automatically deleted with the tenant resource', function() {
     [$tenant] = createTenantsAndRunMigrations();
 
     $syncMaster = CentralUser::create([
@@ -903,10 +958,54 @@ test('tenant pivot records are deleted along with the tenants to which they belo
 
     $syncMaster->tenants()->attach($tenant);
 
-    $tenant->delete();
+    expect(DB::select("SELECT * FROM tenant_users WHERE tenant_id = ?", [$tenant->id]))->toHaveCount(1);
 
-    // Deleting tenant deletes its pivot records
+    $tenant->run(function () {
-    expect(DB::select("SELECT * FROM tenant_users WHERE tenant_id = ?", [$tenant->getTenantKey()]))->toHaveCount(0);
+        TenantUser::firstWhere('global_id', 'cascade_user')->delete();
+    });
+
+    // Deleting tenant resource deletes its pivot record
+    expect(DB::select("SELECT * FROM tenant_users WHERE tenant_id = ?", [$tenant->id]))->toHaveCount(0);
+
+    // The same works with forceDelete
+    addExtraColumns(true);
+
+    $syncMaster = CentralUserWithSoftDeletes::create([
+        'global_id' => 'force_cascade_user',
+        'name' => 'Central user',
+        'email' => 'central2@localhost',
+        'password' => 'password',
+        'role' => 'force_cascade_user',
+        'foo' => 'bar',
+    ]);
+
+    $syncMaster->tenants()->attach($tenant);
+
+    expect(DB::select("SELECT * FROM tenant_users WHERE tenant_id = ?", [$tenant->id]))->toHaveCount(1);
+
+    $tenant->run(function () {
+        TenantUserWithSoftDeletes::firstWhere('global_id', 'force_cascade_user')->forceDelete();
+    });
+
+    expect(DB::select("SELECT * FROM tenant_users WHERE tenant_id = ?", [$tenant->id]))->toHaveCount(0);
+});
+
+test('DeleteAllTenantMappings handles incorrect configuration correctly', function() {
+    Event::listen(TenantDeleted::class, DeleteAllTenantMappings::class);
+
+    [$tenant1, $tenant2] = createTenantsAndRunMigrations();
+
+    // Existing table, non-existent tenant key column
+    // The listener should throw an 'unknown column' exception
+    DeleteAllTenantMappings::$pivotTables = ['tenant_users' => 'non_existent_column'];
+
+    // Should throw an exception when tenant is deleted
+    expect(fn() => $tenant1->delete())->toThrow(QueryException::class, "Unknown column 'non_existent_column' in 'where clause'");
+
+    // Non-existent table
+    DeleteAllTenantMappings::$pivotTables = ['nonexistent_pivot' => 'non_existent_column'];
+
+    expect(fn() => $tenant2->delete())->toThrow(QueryException::class, "Table 'main.nonexistent_pivot' doesn't exist");
 });
 
 test('trashed resources are synced correctly', function () {
@@ -1265,6 +1364,13 @@ test('global scopes on syncable models can break resource syncing', function ()
     expect($tenant1->run(fn () => TenantUser::first()->name))->toBe('tenant2 user');
 });
 
+function addTenantIdConstraintToPivot(string $pivotTable): void
+{
+    Schema::table($pivotTable, function (Blueprint $table) {
+        $table->foreign('tenant_id')->references('id')->on('tenants')->onDelete('cascade');
+    });
+}
+
 /**
  * Create two tenants and run migrations for those tenants.
  *