Moved fixtures into conftest.py

tests/conftest.py

@@ -0,0 +1,22 @@
+from sqlite_utils import Database
+import sqlite3
+import pytest
+
+
+@pytest.fixture
+def fresh_db():
+    return Database(sqlite3.connect(":memory:"))
+
+
+@pytest.fixture
+def existing_db():
+    database = Database(sqlite3.connect(":memory:"))
+    database.conn.executescript(
+        """
+        CREATE TABLE foo (text TEXT);
+        INSERT INTO foo (text) values ("one");
+        INSERT INTO foo (text) values ("two");
+        INSERT INTO foo (text) values ("three");
+    """
+    )
+    return database