python config access: fix style and KeyError bug

This fixes some minor style/pep8 things and adds tests for the new
config support.  Also fixes a bug where KeyError was never raised
on a missing key.

1 files changed, 56 insertions, 0 deletions

diff --git a/bindings/python-cffi/tests/test_config.py b/bindings/python-cffi/tests/test_config.py
new file mode 100644
index 00000000..1b2695f5
--- /dev/null
+++ b/bindings/python-cffi/tests/test_config.py
@@ -0,0 +1,56 @@
+import collections.abc
+
+import pytest
+
+import notmuch2._database as dbmod
+
+import notmuch2._config as config
+
+
+class TestIter:
+
+    @pytest.fixture
+    def db(self, maildir):
+        with dbmod.Database.create(maildir.path) as db:
+            yield db
+
+    def test_type(self, db):
+        assert isinstance(db.config, collections.abc.MutableMapping)
+        assert isinstance(db.config, config.ConfigMapping)
+
+    def test_alive(self, db):
+        assert db.config.alive
+
+    def test_set_get(self, maildir):
+        # Ensure get-set works from different db objects
+        with dbmod.Database.create(maildir.path) as db0:
+            db0.config['spam'] = 'ham'
+        with dbmod.Database(maildir.path) as db1:
+            assert db1.config['spam'] == 'ham'
+
+    def test_get_keyerror(self, db):
+        with pytest.raises(KeyError):
+            val = db.config['not-a-key']
+            print(repr(val))
+
+    def test_iter(self, db):
+        assert list(db.config) == []
+        db.config['spam'] = 'ham'
+        db.config['eggs'] = 'bacon'
+        assert set(db.config) == {'spam', 'eggs'}
+        assert set(db.config.keys()) == {'spam', 'eggs'}
+        assert set(db.config.values()) == {'ham', 'bacon'}
+        assert set(db.config.items()) == {('spam', 'ham'), ('eggs', 'bacon')}
+
+    def test_len(self, db):
+        assert len(db.config) == 0
+        db.config['spam'] = 'ham'
+        assert len(db.config) == 1
+        db.config['eggs'] = 'bacon'
+        assert len(db.config) == 2
+
+    def test_del(self, db):
+        db.config['spam'] = 'ham'
+        assert db.config.get('spam') == 'ham'
+        del db.config['spam']
+        assert db.config.get('spam') is None