Add truncate support

Author: dmason30

src/Traits/BuilderCaching.php

@@ -12,4 +12,13 @@ public function all($columns = ['*']) : Collection
 
         return $this->model->get($columns);
     }
+
+    public function truncate()
+    {
+        if ($this->isCachable()) {
+            $this->model->flushCache();
+        }
+
+        return parent::truncate();
+    }
 }

tests/Integration/Traits/BuilderCachingTest.php

@@ -24,4 +24,12 @@ public function testDisablingAllQuery()
         $this->assertInstanceOf(Collection::class, $allAuthors);
         $this->assertNull($cachedAuthors);
     }
+
+    public function testUsingTruncateInvalidatesCache()
+    {
+        (new Author)->get();
+        Author::truncate();
+
+        $this->assertTrue((new Author)->get()->isEmpty());
+    }
 }