warc: Add tests

Using hyothesis-based testcase generation. This is quite nice compared
to manual test data generation, since it catches alot more corner cases
(if done right).

This commit also fixes a few issues, including:

- log records will only be written if the log is nonempty
- properly quote packageUrl path’s
- drop old thread checking code
- use placeholder url for scripts without name

1 files changed, 3 insertions, 0 deletions

diff --git a/crocoite/behavior.py b/crocoite/behavior.py
index 7f3a3a0..dcab33a 100644
--- a/crocoite/behavior.py
+++ b/crocoite/behavior.py
@@ -197,6 +197,9 @@ class DomSnapshotEvent:
     __slots__ = ('url', 'document', 'viewport')
 
     def __init__ (self, url, document, viewport):
+        # XXX: document encoding?
+        assert isinstance (document, bytes)
+
         self.url = url
         self.document = document
         self.viewport = viewport