Replace custom test runner with pytest runner

Author: roaffix

.gitignore

@@ -34,3 +34,10 @@ venv
 # IDEs
 .vscode
 .idea
+
+# Test coverage
+.coverage
+
+# Cache
+.pytest_cache
+.mypy_cache

README.md

@@ -22,8 +22,7 @@ def calc_pi_device(samples):
     return 4 * af.count(within_unit_circle) / samples
 ```
 
-
-Choosing a particular backend can be done using `af.set_backend(name)`  where name is either "_cuda_", "_opencl_", or "_cpu_". The default device is chosen in the same order of preference.
+Choosing a particular backend can be done using `af.set_backend(name)` where name is either "_cuda_", "_opencl_", or "_cpu_". The default device is chosen in the same order of preference.
 
 ## Requirements
 
@@ -41,19 +40,19 @@ Please check the following links for dependencies.
 
 **Install the last stable version:**
 
-```
+```bash
 pip install arrayfire
 ```
 
 **Install the development version:**
 
-```
+```bash
 pip install git+git://github.com/arrayfire/arrayfire-python.git@devel
 ```
 
 **Installing offline:**
 
-```
+```bash
 cd path/to/arrayfire-python
 python setup.py install
 ```
@@ -62,16 +61,16 @@ python setup.py install
 
 Please follow [these instructions](https://github.com/arrayfire/arrayfire-python/wiki) to ensure the arrayfire-python can find the arrayfire libraries.
 
-To run arrayfire tests, you can run the following command from command line.
+To run arrayfire smoke tests, you can run the following command from command line.
 
-```
-python -m arrayfire.tests
+```bash
+python setup.py test
 ```
 
 ## Communication
 
-* [Slack Chat](https://join.slack.com/t/arrayfire-org/shared_invite/MjI4MjIzMDMzMTczLTE1MDI5ODg4NzYtN2QwNGE3ODA5OQ)
-* [Google Groups](https://groups.google.com/forum/#!forum/arrayfire-users)
+- [Slack Chat](https://join.slack.com/t/arrayfire-org/shared_invite/MjI4MjIzMDMzMTczLTE1MDI5ODg4NzYtN2QwNGE3ODA5OQ)
+- [Google Groups](https://groups.google.com/forum/#!forum/arrayfire-users)
 
 ## Acknowledgements
 

setup.cfg

@@ -17,14 +17,32 @@ classifiers =
 [options]
 packages = find:
 python_requires = >=3.6.0
+setup_requires =
+    pytest-runner
+tests_require =
+    flake8-import-order
+    flake8-quotes
+    pytest-cov
+    pytest-flake8
+    pytest-mypy
 
 [options.packages.find]
-include = arrayfire
 exclude =
     examples
     tests
 
+[aliases]
+test = pytest
+
 [flake8]
 application-import-names = arrayfire
 import-order-style = pep8
 max-line-length = 119
+
+[tool:pytest]
+addopts = --cache-clear --cov=arrayfire --cov-fail-under=70
+console_output_style = classic
+
+[coverage:report]
+show_missing = true
+skip_covered = true

tests/__init__.py

@@ -1,10 +0,0 @@
-#!/usr/bin/env python
-
-#######################################################
-# Copyright (c) 2019, ArrayFire
-# All rights reserved.
-#
-# This file is distributed under 3-clause BSD license.
-# The complete license agreement can be obtained at:
-# http://arrayfire.com/licenses/BSD-3-Clause
-########################################################