Tests: added support for coverage

Author: PierreRaybaut

.coveragerc

@@ -0,0 +1,8 @@
+[run]
+parallel = True
+omit =
+    */qwt/tests/*
+
+[report]
+exclude_lines =
+    if __name__ == .__main__.:

README.md

@@ -94,7 +94,7 @@ for more details on API limitations when comparing to Qwt.
 
 ### Optional dependencies
 
-- pytest, pytest-qt (for unit tests)
+- coverage, pytest, pytest-qt, pytest-cov (for unit tests)
 - sphinx (for documentation generation)
 
 ## Installation

doc/installation.rst

@@ -10,7 +10,7 @@ Requirements:
     * QtPy >= 1.3
     * NumPy 1.x (x>=5)
     * Sphinx 1.x (x>=1) for documentation generation
-    * pytest for unit testing
+    * pytest, pytest-cov, pytest-qt, coverage for unit testing
 
 Installation
 ------------

qwt/tests/utils.py

@@ -65,7 +65,7 @@ def parse_args(self):
             choices=[self.UNATTENDED_ARG, self.SCREENSHOTS_ARG],
             required=False,
         )
-        args = parser.parse_args()
+        args, _unknown = parser.parse_known_args()
         if args.mode is not None:
             self.set_env_from_args(args)
 

scripts/run_test_coverage.bat

@@ -0,0 +1,16 @@
+@echo off
+REM ======================================================
+REM Test coverage script
+REM ======================================================
+REM Licensed under the terms of the MIT License
+REM Copyright (c) 2020 Pierre Raybaut
+REM (see LICENSE file for more details)
+REM ======================================================
+setlocal
+call %~dp0utils GetScriptPath SCRIPTPATH
+call %FUNC% SetPythonPath
+call %FUNC% UseWinPython
+cd %SCRIPTPATH%\..\
+pytest --cov=qwt --cov-report=html
+start htmlcov\index.html
+call %FUNC% EndOfScript

setup.py

@@ -111,7 +111,7 @@ def get_subpackages(name):
     install_requires=["NumPy>=1.5", "QtPy>=1.3"],
     extras_require={
         "doc": ["Sphinx>=1.1"],
-        "test": ["pytest", "pytest-qt"]
+        "test": ["coverage", "pytest", "pytest-qt", "pytest-cov"],
     },
     entry_points={
         "gui_scripts": [