JS: check for file explicitely

1 files changed, 7 insertions, 1 deletions

diff --git a/wqflask/utility/tools.py b/wqflask/utility/tools.py
index 77cb6ac5..0ee1146e 100644
--- a/wqflask/utility/tools.py
+++ b/wqflask/utility/tools.py
@@ -121,9 +121,14 @@ def assert_writable_dir(dir):
         fh.close()
         os.remove(fn)
     except IOError:
-        raise Exception('Unable to write test.txt to directory ' + dir )
+        raise Exception('Unable to write test.txt to directory ' + dir)
     return dir
 
+def assert_file(fn):
+    if not valid_file(fn):
+        raise Exception('Unable to find file '+fn)
+    return fn
+
 def mk_dir(dir):
     if not valid_path(dir):
         os.makedirs(dir)
@@ -234,4 +239,5 @@ if os.environ.get('WQFLASK_OVERRIDES'):
             logger.debug(OVERRIDES)
 
 assert_dir(get_setting("JS_BIODALLIANCE"))
+assert_file(get_setting("JS_BIODALLIANCE")+"/build/dalliance-all.js")
 assert_dir(get_setting("JS_TWITTER_POST_FETCHER"))