fix: use explicit rather than implicit relative imports (#433)

use explicit rather than implicit relative imports

Fixes #432 🦕

Author: waltaskew

tests/__init__.py

@@ -25,7 +25,7 @@
 import pytest
 import sqlalchemy
 
-import fauxdbi
+from . import fauxdbi
 
 sqlalchemy_version = packaging.version.parse(sqlalchemy.__version__)
 sqlalchemy_1_3_or_higher = pytest.mark.skipif(

tests/unit/__init__.py

@@ -19,7 +19,7 @@
 
 import sqlalchemy
 
-from conftest import setup_table
+from .conftest import setup_table
 
 
 def test_inline_comments(faux_conn):

tests/unit/conftest.py

@@ -20,8 +20,8 @@
 import pytest
 import sqlalchemy.exc
 
-from conftest import setup_table
-from conftest import sqlalchemy_1_4_or_higher
+from .conftest import setup_table
+from .conftest import sqlalchemy_1_4_or_higher
 
 
 def test_constraints_are_ignored(faux_conn, metadata):

tests/unit/test_comments.py

@@ -27,7 +27,7 @@
 from sqlalchemy import Column, Integer, literal_column, select, String, Table, union
 from sqlalchemy.testing.assertions import eq_, in_
 
-from conftest import setup_table, sqlalchemy_1_3_or_higher
+from .conftest import setup_table, sqlalchemy_1_3_or_higher
 
 
 def assert_result(connection, sel, expected, params=()):

tests/unit/test_compiler.py

@@ -19,7 +19,7 @@
 
 import pytest
 
-from conftest import setup_table
+from .conftest import setup_table
 
 geoalchemy2 = pytest.importorskip("geoalchemy2")
 

tests/unit/test_compliance.py

@@ -26,7 +26,7 @@
 
 import sqlalchemy_bigquery
 
-from conftest import (
+from .conftest import (
     setup_table,
     sqlalchemy_version,
     sqlalchemy_1_3_or_higher,

tests/unit/test_geography.py

@@ -14,7 +14,7 @@
 import pytest
 import sqlalchemy
 
-from conftest import setup_table
+from .conftest import setup_table
 
 
 @pytest.fixture