Update repo structure for improved test quality

References:
 - https://blog.ionelmc.ro/2014/05/25/python-packaging/#the-structure
 - https://docs.pytest.org/en/7.1.x/explanation/goodpractices.html#choosing-a-test-layout-import-rules

Author: jteppinette

.pre-commit-config.yaml

@@ -34,12 +34,12 @@ repos:
       - id: black
 
   - repo: https://github.com/timothycrosley/isort
-    rev: 5.10.1
+    rev: 5.12.0
     hooks:
       - id: isort
 
   - repo: https://github.com/pycqa/flake8
-    rev: 5.0.4
+    rev: 6.0.0
     hooks:
       - id: flake8
 

MANIFEST.in

@@ -0,0 +1,3 @@
+graft src
+prune tests
+prune **/__pycache__

pyproject.toml

@@ -5,3 +5,6 @@ build-backend = "setuptools.build_meta"
 [tool.isort]
 profile = "black"
 sections = "FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER"
+
+[tool.pytest.ini_options]
+addopts = ["--import-mode=importlib"]

setup.cfg

@@ -11,8 +11,13 @@ license = MIT
 
 [options]
 packages = find:
+package_dir =
+  = src
 python_requires = >= 3.7
 include_package_data = True
 
+[options.packages.find]
+where = src
+
 [options.package_data]
 logfmter = py.typed