Use Apartment::Tenant.drop instead of raw SQL

lib/spree_shared/tenant_initializer.rb

@@ -9,10 +9,15 @@ def initialize(db_name)
 
   def create_database
     ActiveRecord::Base.establish_connection #make sure we're talkin' to db
-    ActiveRecord::Base.connection.execute("DROP SCHEMA IF EXISTS #{db_name} CASCADE")
+    drop_tenant_if_exists
     Apartment::Tenant.create db_name
   end
 
+  def drop_tenant_if_exists
+    Apartment::Tenant.drop db_name
+  rescue Apartment::TenantNotFound
+  end
+
   def load_seeds
     Apartment::Tenant.switch(db_name) do
       Rails.application.load_seed
@@ -42,4 +47,4 @@ def create_admin
     end
   end
 
-end
+end