Add a test framework script to pull down rendered javascript files

- Use the testing framework so we don't need to spin up a server

InvenTree/InvenTree/ci_render_js.py

@@ -0,0 +1,93 @@
+"""
+Pull rendered copies of the templated 
+"""
+
+from django.http import response
+from django.test import TestCase, testcases
+from django.contrib.auth import get_user_model
+
+import os
+import pathlib
+
+
+class RenderJavascriptFiles(TestCase):
+    """
+    A unit test to "render" javascript files.
+
+    The server renders templated javascript files,
+    we need the fully-rendered files for linting and static tests.
+    """
+
+    def setUp(self):
+
+        user = get_user_model()
+
+        self.user = user.objects.create_user(
+            username='testuser',
+            password='testpassword',
+            email='user@gmail.com',
+        )
+
+        self.client.login(username='testuser', password='testpassword')
+
+    def download_file(self, filename, prefix):
+
+        url = os.path.join(prefix, filename)
+
+        response = self.client.get(url)
+
+        here = os.path.abspath(os.path.dirname(__file__))
+
+        output_dir = os.path.join(
+            here,
+            '..',
+            '..',
+            'js_tmp',
+        )
+
+        output_dir = os.path.abspath(output_dir)
+
+        if not os.path.exists(output_dir):
+            os.mkdir(output_dir)
+
+        output_file = os.path.join(
+            output_dir,
+            filename,
+        )
+
+        with open(output_file, 'wb') as output:
+            output.write(response.content)
+
+    def download_files(self, subdir, prefix):
+        here = os.path.abspath(os.path.dirname(__file__))
+
+        js_template_dir = os.path.join(
+            here,
+            '..',
+            'templates',
+            'js',
+        )
+
+        directory = os.path.join(js_template_dir, subdir)
+
+        directory = os.path.abspath(directory)
+
+        js_files = pathlib.Path(directory).rglob('*.js')
+
+        for f in js_files:
+            js = os.path.basename(f)
+
+            self.download_file(js, prefix)
+
+    def test_render_files(self):
+        """
+        Look for all javascript files
+        """
+
+        self.download_files('translated', '/js/i18n')
+        self.download_files('dynamic', '/js/dynamic')
+
+
+
+
+