Added j2 sniffer and solved syntax bugs

tests/integration/test_jinja2_syntax.py

@@ -0,0 +1,35 @@
+# tests/integration/test_jinja2_syntax.py
+
+import os
+import unittest
+from jinja2 import Environment, exceptions
+
+class TestJinja2Syntax(unittest.TestCase):
+    def test_all_j2_templates_have_valid_syntax(self):
+        """
+        Findet rekursiv alle .j2-Dateien ab Projekt-Root und versucht, sie zu parsen.
+        Ein SyntaxError in einem Template schlägt den Test fehl.
+        """
+        project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
+        env = Environment()
+
+        failures = []
+
+        for root, _dirs, files in os.walk(project_root):
+            for fname in files:
+                if fname.endswith('.j2'):
+                    path = os.path.join(root, fname)
+                    with open(path, 'r', encoding='utf-8') as f:
+                        src = f.read()
+                    try:
+                        env.parse(src)
+                    except exceptions.TemplateSyntaxError as e:
+                        failures.append(f"{path}:{e.lineno} – {e.message}")
+
+        if failures:
+            self.fail("Gefundene Syntax-Fehler in Jinja2-Templates:\n" +
+                      "\n".join(failures))
+
+
+if __name__ == '__main__':
+    unittest.main()