test: Add test whether ambiguous columns are mapped correctly

tests/Audit.php

@@ -22,11 +22,13 @@ public function getColumns()
         return [
             'user_id',
             'activity',
+            'subsystem_id'
         ];
     }
 
     public function createRelations(Relations $relations)
     {
         $relations->hasOne('user', User::class);
+        $relations->belongsToOne('subsystem', Subsystem::class);
     }
 }

tests/HydratorTest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace ipl\Tests\Orm;
+
+use ipl\Tests\Sql\TestCase;
+
+class HydratorTest extends TestCase
+{
+    public function testWhetherAmbiguousColumnsAreCorrectlyMapped(): void
+    {
+        $query = Subsystem::on(new TestConnection())
+            ->with(['audit', 'audit.user']);
+
+        $hydrator = $query->createHydrator();
+
+        $subject = new Subsystem();
+        $hydrator->hydrate(['subsystem_audit_user_id' => 2], $subject);
+
+        $this->assertTrue(isset($subject->audit->user_id), 'Ambiguous columns are not mapped correctly');
+        $this->assertSame($subject->audit->user_id, 2, 'Ambiguous columns are not mapped correctly');
+
+        $this->assertTrue(isset($subject->audit->user->id), 'Ambiguous columns are not mapped correctly');
+        $this->assertSame($subject->audit->user->id, 2, 'Ambiguous columns are not mapped correctly');
+    }
+}

tests/Subsystem.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace ipl\Tests\Orm;
+
+use ipl\Orm\Model;
+use ipl\Orm\Relations;
+
+class Subsystem extends Model
+{
+    public function getTableName()
+    {
+        return 'subsystem';
+    }
+
+    public function getKeyName()
+    {
+        return 'id';
+    }
+
+    public function getColumns()
+    {
+        return ['name'];
+    }
+
+    public function createRelations(Relations $relations)
+    {
+        $relations->hasMany('audit', Audit::class);
+    }
+}