amanuensis/database.py

@@ -6,6 +6,10 @@ import sqlite3
 import uuid
 
 
+# Register GUID as a known type with sqlite
+sqlite3.register_converter('GUID', lambda h: uuid.UUID(hex=h))
+sqlite3.register_adapter(uuid.UUID, lambda u: u.hex)
+
 class Uuid(TypeDecorator):
 	"""
 	A uuid backed by a char(32) field in sqlite.
@@ -28,9 +32,17 @@ class Uuid(TypeDecorator):
 		else:
 			return value
 
+engine = create_engine('sqlite:///:memory:', connect_args={'detect_types': sqlite3.PARSE_DECLTYPES})
+
+# Enable foreign key constraints
+@event.listens_for(engine, "connect")
+def set_sqlite_pragma(dbapi_connection, connection_record):
+    cursor = dbapi_connection.cursor()
+    cursor.execute("PRAGMA foreign_keys=ON")
+    cursor.close()
 
 # Define naming conventions for generated constraints
-metadata = MetaData(naming_convention={
+metadata = MetaData(bind=engine, naming_convention={
     "ix": "ix_%(column_0_label)s",
     "uq": "uq_%(table_name)s_%(column_0_name)s",
     "ck": "ck_%(table_name)s_%(constraint_name)s",
@@ -38,22 +50,8 @@ metadata = MetaData(naming_convention={
     "pk": "pk_%(table_name)s"
 })
 
+# Thread-safe db session
+session = scoped_session(sessionmaker(bind=engine))
+
 # Base class for ORM models
 ModelBase = declarative_base(metadata=metadata)
-
-
-class DbContext():
-    def __init__(self, db_uri, debug=False):
-        # Create an engine and enable foreign key constraints in sqlite
-        self.engine = create_engine(db_uri, echo=debug)
-        @event.listens_for(self.engine, "connect")
-        def set_sqlite_pragma(dbapi_connection, connection_record):
-            cursor = dbapi_connection.cursor()
-            cursor.execute("PRAGMA foreign_keys=ON")
-            cursor.close()
-
-        # Create a thread-safe session factory
-        self.session = scoped_session(sessionmaker(bind=self.engine))
-
-    def create_all(self):
-        ModelBase.metadata.create_all(self.engine)

tests/test_amanuensis.py

@@ -0,0 +1,5 @@
+from amanuensis import __version__
+
+
+def test_version():
+    assert __version__ == '0.1.0'

tests/test_db.py

@@ -1,25 +0,0 @@
-import pytest
-from sqlalchemy import func
-
-from amanuensis.database import DbContext
-from amanuensis.models import *
-
-
-@pytest.fixture
-def session():
-    db = DbContext('sqlite:///:memory:', debug=True)
-    db.create_all()
-    return db.session
-
-
-def test_create(session):
-    """Simple test that the database creates fine from scratch."""
-    assert session.query(func.count(User.id)).scalar() == 0
-    assert session.query(func.count(Lexicon.id)).scalar() == 0
-    assert session.query(func.count(Membership.id)).scalar() == 0
-    assert session.query(func.count(Character.id)).scalar() == 0
-    assert session.query(func.count(Article.id)).scalar() == 0
-    assert session.query(func.count(ArticleIndex.id)).scalar() == 0
-    assert session.query(func.count(ArticleIndexRule.id)).scalar() == 0
-    assert session.query(func.count(ArticleContentRule.id)).scalar() == 0
-    assert session.query(func.count(Post.id)).scalar() == 0