fix: allow for caps in file name suffixes #206

@schinkelg ran aground of this one and I took the opportunity to add a
test to catch this sort of thing for next time.

src/documents/consumer.py

@@ -102,7 +102,7 @@ class Consumer(object):
             parser_class = self._get_parser_class(doc)
             if not parser_class:
                 self.log(
-                    "info", "No parsers could be found for {}".format(doc))
+                    "error", "No parsers could be found for {}".format(doc))
                 self._ignore.append(doc)
                 continue
 
@@ -160,6 +160,16 @@ class Consumer(object):
             if result:
                 options.append(result)
 
+        self.log(
+            "info",
+            "Parsers available: {}".format(
+                ", ".join([str(o["parser"].__name__) for o in options])
+            )
+        )
+
+        if not options:
+            return None
+
         # Return the parser with the highest weight.
         return sorted(
             options, key=lambda _: _["weight"], reverse=True)[0]["parser"]

src/documents/tests/test_consumer.py

@@ -1,8 +1,56 @@
 from django.test import TestCase
+from unittest import mock
 
+from ..consumer import Consumer
 from ..models import FileInfo
 
 
+class TestConsumer(TestCase):
+
+    class DummyParser(object):
+        pass
+
+    def test__get_parser_class_1_parser(self):
+        self.assertEqual(
+            self._get_consumer()._get_parser_class("doc.pdf"),
+            self.DummyParser
+        )
+
+    @mock.patch("documents.consumer.os.makedirs")
+    @mock.patch("documents.consumer.os.path.exists", return_value=True)
+    @mock.patch("documents.consumer.document_consumer_declaration.send")
+    def test__get_parser_class_n_parsers(self, m, *args):
+
+        class DummyParser1(object):
+            pass
+
+        class DummyParser2(object):
+            pass
+
+        m.return_value = (
+            (None, lambda _: {"weight": 0, "parser": DummyParser1}),
+            (None, lambda _: {"weight": 1, "parser": DummyParser2}),
+        )
+
+        self.assertEqual(Consumer()._get_parser_class("doc.pdf"), DummyParser2)
+
+    @mock.patch("documents.consumer.os.makedirs")
+    @mock.patch("documents.consumer.os.path.exists", return_value=True)
+    @mock.patch("documents.consumer.document_consumer_declaration.send")
+    def test__get_parser_class_0_parsers(self, m, *args):
+        m.return_value = ((None, lambda _: None),)
+        self.assertIsNone(Consumer()._get_parser_class("doc.pdf"))
+
+    @mock.patch("documents.consumer.os.makedirs")
+    @mock.patch("documents.consumer.os.path.exists", return_value=True)
+    @mock.patch("documents.consumer.document_consumer_declaration.send")
+    def _get_consumer(self, m, *args):
+        m.return_value = (
+            (None, lambda _: {"weight": 0, "parser": self.DummyParser}),
+        )
+        return Consumer()
+
+
 class TestAttributes(TestCase):
 
     TAGS = ("tag1", "tag2", "tag3")