Migrate pytest configurations to pyproject.toml (#725)

CONTRIBUTING.md

@@ -311,11 +311,11 @@ Leave a comment in the PR and we'll help you out.
 
 You can also run tests in just one test script using:
 
-    pytest --verbose --mpl --mpl-results-path=results --doctest-modules pygmt/tests/NAME_OF_TEST_FILE.py
+    pytest pygmt/tests/NAME_OF_TEST_FILE.py
 
 or run tests which contain names that match a specific keyword expression:
 
-    pytest --verbose --mpl --mpl-results-path=results --doctest-modules -k KEYWORD pygmt/tests
+    pytest -k KEYWORD pygmt/tests
 
 ### Testing plots
 

Makefile

@@ -1,9 +1,8 @@
 # Build, package, test, and clean
 PROJECT=pygmt
 TESTDIR=tmp-test-dir-with-unique-name
-PYTEST_ARGS=--cov=$(PROJECT) --cov-config=../pyproject.toml \
+PYTEST_COV_ARGS=--cov=$(PROJECT) --cov-config=../pyproject.toml \
 			--cov-report=term-missing --cov-report=xml --cov-report=html \
-			--doctest-modules -v --mpl --mpl-results-path=results \
 			--pyargs ${PYTEST_EXTRA}
 BLACK_FILES=$(PROJECT) setup.py doc/conf.py examples
 BLACKDOC_OPTIONS=--line-length 79
@@ -30,7 +29,7 @@ test:
 	@echo ""
 	@cd $(TESTDIR); python -c "import $(PROJECT); $(PROJECT).show_versions()"
 	@echo ""
-	cd $(TESTDIR); pytest $(PYTEST_ARGS) $(PROJECT)
+	cd $(TESTDIR); pytest $(PYTEST_COV_ARGS) $(PROJECT)
 	cp $(TESTDIR)/coverage.xml .
 	cp -r $(TESTDIR)/htmlcov .
 	rm -r $(TESTDIR)

environment.yml

@@ -14,7 +14,7 @@ dependencies:
     - ipython
     - matplotlib
     - jupyter
-    - pytest
+    - pytest>=6.0
     - pytest-cov
     - pytest-mpl
     - coverage[toml]

pyproject.toml

@@ -1,2 +1,6 @@
 [tool.coverage.run]
 omit = ["*/tests/*", "*pygmt/__init__.py"]
+
+[tool.pytest.ini_options]
+minversion = "6.0"
+addopts = "--verbose --doctest-modules --mpl --mpl-results-path=results"

requirements-dev.txt

@@ -2,7 +2,7 @@
 ipython
 matplotlib
 jupyter
-pytest
+pytest>=6.0
 pytest-cov
 pytest-mpl
 coverage[toml]