Reintroduce WARC logging

Commit 7730e0d64ec895091a0dd7eb0e3c6ce2ed02d981 removed logging to WARC
files. Add it again, but with a different implementation.. Credits to
structlog for inspiration.

1 files changed, 60 insertions, 0 deletions

diff --git a/crocoite/test_logger.py b/crocoite/test_logger.py
new file mode 100644
index 0000000..8a34aab
--- /dev/null
+++ b/crocoite/test_logger.py
@@ -0,0 +1,60 @@
+import pytest
+from .logger import Logger, Consumer, NullConsumer
+
+@pytest.fixture
+def logger ():
+    return Logger (consumer=[NullConsumer ()])
+
+class QueueConsumer (Consumer):
+    def __init__ (self):
+        self.data = []
+
+    def __call__ (self, **kwargs):
+        self.data.append (kwargs)
+        return kwargs
+
+def test_bind (logger):
+    # simple bind
+    logger = logger.bind (foo='bar')
+    ret = logger.debug ()
+    assert ret['foo'] == 'bar'
+
+    # additional
+    ret = logger.debug (bar='baz')
+    assert ret['foo'] == 'bar'
+    assert ret['bar'] == 'baz'
+    
+    # override
+    ret = logger.debug (foo='baz')
+    assert ret['foo'] == 'baz'
+
+    # unbind
+    logger = logger.unbind (foo=None)
+    ret = logger.debug ()
+    assert 'foo' not in ret
+
+def test_consumer (logger):
+    c = QueueConsumer ()
+    logger.connect (c)
+    ret = logger.debug (foo='bar')
+    assert len (c.data) == 1
+    assert c.data[0] == ret
+    assert ret['foo'] == 'bar'
+    c.data = []
+
+    # inheritance
+    logger = logger.bind (inherit=1)
+    ret = logger.debug (foo='bar')
+    assert len (c.data) == 1
+    assert c.data[0] == ret
+    assert ret['foo'] == 'bar'
+    assert ret['inherit'] == 1
+    c.data = []
+
+    # removal
+    logger.disconnect (c)
+    ret = logger.debug (foo='bar')
+    assert len (c.data) == 0
+    assert ret['foo'] == 'bar'
+    assert ret['inherit'] == 1
+