Separate tests from library code

This makes testing and installing without tests a lot easier.

Author: Cito

Diff for: .coveragerc

@@ -0,0 +1,12 @@
+[run]
+branch = True
+source = graphql
+
+[report]
+exclude_lines =
+    pragma: no cover
+    raise NotImplementedError
+ignore_errors = True
+omit =
+    docs/*
+    tests/*

Diff for: .gitignore

@@ -1,62 +1,28 @@
-__pycache__/
-*.py[cod]
-
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-pip-wheel-metadata/
-share/python-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
 
-*.manifest
-*.spec
-
-pip-log.txt
-pip-delete-this-directory.txt
-
-htmlcov/
-.tox/
-.nox/
-.coverage
-.coverage.*
 .cache
-nosetests.xml
-coverage.xml
-*.cover
-.pytest_cache/
-
-*.mo
-*.pot
-
-*.log
-
-docs/_build/
-
-target/
-
-.python-version
-
+.coverage
 .env
+.env.bak
+.idea
+.mypy_cache
+.pytest_cache
+.tox
 .venv
-env/
-venv/
-ENV/
-env.bak/
-venv.bak/
+.venv.bak
+.vs
+
+build
+dist
+docs/_build
+pip-wheel-metadata
+wheels
 
-.mypy_cache/
+play
 
-.idea/
+__pycache__
+
+*.cover
+*.egg
+*.egg-info
+*.log
+*.py[cod]

Diff for: MANIFEST.in

@@ -4,12 +4,18 @@ include CODEOWNERS
 include LICENSE
 include README.md
 
+include .coveragerc
+include .flake8
+
 include codecov.yml
 include tox.ini
 
-graft graphql
+include poetry.lock
+include pyproject.toml
 
-global-exclude tests/*
-recursive-exclude tests *
+graft graphql_relay
+graft tests
+recursive-include docs *.rst conf.py Makefile make.bat *.jpg *.png *.gif
+prune docs/_build
 
-global-exclude *.py[co] __pycache__
+global-exclude *.py[co] __pycache__

Diff for: README.md

@@ -5,13 +5,13 @@ GraphQL-relay-py is the [Relay](https://relay.dev/) library for
 
 It allows the easy creation of Relay-compliant servers using GraphQL-core.
 
-GraphQL-relay-py is a Python port of
+GraphQL-Relay-Py is a Python port of
 [graphql-relay-js](https://github.com/graphql/graphql-relay-js),
-while GraphQL-core is a Python port of
+while GraphQL-Core is a Python port of
 [GraphQL.js](https://github.com/graphql/graphql-js),
 the reference implementation of GraphQL for JavaScript.
 
-Since version 3, GraphQL-relay-py and GraphQL-core support Python 3.6 and above only.
+Since version 3, GraphQL-Relay-Py and GraphQL-Core support Python 3.6 and above only.
 For older versions of Python, you can use version 2 of these libraries.
 
 [![PyPI version](https://badge.fury.io/py/graphql-relay.svg)](https://badge.fury.io/py/graphql-relay)
@@ -28,7 +28,7 @@ An overview of GraphQL in general is available in the
 [Specification for GraphQL](https://github.com/graphql-python/graphql-core).
 
 This library is designed to work with the 
-the [GraphQL-core](https://github.com/graphql-python/graphql-core)
+the [GraphQL-Core](https://github.com/graphql-python/graphql-core)
 Python reference implementation of a GraphQL server.
 
 An overview of the functionality that a Relay-compliant GraphQL server should provide
@@ -230,14 +230,26 @@ value of `mutation_with_client_mutation_id`.
 
 ## Contributing
 
-After cloning this repo, ensure dependencies are installed by running:
+After cloning this repository from GitHub,
+we recommend using [Poetry](https://poetry.eustace.io/)
+to create a test environment. With poetry installed,
+you do this with the following command:
 
 ```sh
-python setup.py install
+poetry install
 ```
 
-After developing, the full test suite can be evaluated by running:
+You can then run the complete test suite like this:
 
 ```sh
-python setup.py test # Use --pytest-args="-v -s" for verbose mode
+poetry run pytest
+```
+
+Use [tox](https://tox.readthedocs.io/) to run the test suite with different
+Python versions and perform additional testing on the code base. You need
+to install and run tox separately, as it uses its own virtual environments.
+You can also restrict tox to an individual environment, like this:
+
+```sh
+tox -e py37
 ```

Diff for: graphql_relay/connection/__init__.py

@@ -0,0 +1 @@
+"""graphql_relay.connection"""

Diff for: graphql_relay/connection/tests/__init__.py

@@ -0,0 +1 @@
+"""graphql_relay.mutation"""

Diff for: graphql_relay/mutation/__init__.py

@@ -0,0 +1 @@
+"""graphql_relay.node"""