Add script

.travis.yml

@@ -15,7 +15,7 @@ before_install:
     - cd InvenTree && python3 manage.py createsuperuser --username InvenTreeAdmin --email admin@inventree.com --noinput && cd ..
 
 script:
-    - python3 ci\check_migration_files.py
+    - python3 ci/check_migration_files.py
     - make coverage
     - make style
 

ci/check_migration_files.py

@@ -0,0 +1,29 @@
+""" Check that there are no database migration files which have not been committed. """
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+import sys
+import subprocess
+
+cmd = ['git', 'ls-files', '--exclude-standard', '--others']
+
+proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+
+out, err = proc.communicate()
+
+migrations = []
+
+for line in str(out.decode()).split('\n'):
+    if '/migrations/' in line:
+        migrations.append(line)
+
+if len(migrations) == 0:
+    sys.exit(0)
+
+print("There are {n} unstaged migration files:".format(n=len(migrations)))
+
+for m in migrations:
+    print(" - {m}".format(m=m))
+
+sys.exit(len(migrations))