Split targets and run them with make test

Author: Mauko Quiroga

Makefile

@@ -1,7 +1,5 @@
-help = sed -n "/^$1/ { x ; p ; } ; s/\#\#/[⚙]/ ; s/\./.../ ; x" ${MAKEFILE_LIST}
-python_packages := $(shell python -c "import sysconfig; print(sysconfig.get_paths()[\"purelib\"])")
-country_template := openfisca_country_template
-extension_template := openfisca_extension_template
+help = sed -n "/^$1/ { x ; p ; } ; s/\#\#/[⚙]/ ; s/\./…/ ; x" ${MAKEFILE_LIST}
+python_packages = $(shell python -c "import sysconfig; print(sysconfig.get_paths()[\"purelib\"])")
 
 ## Same as `make test`.
 all: test
@@ -53,11 +51,7 @@ check-types: openfisca_core openfisca_web_api
 	@mypy $?
 
 ## Run openfisca-core & country/extension template tests.
-test:: clean check-syntax-errors check-style check-types
-test:: \
-	$(shell git ls-files "tests/*.py") \
-	${python_packages}/${country_template}/tests \
-	${python_packages}/${extension_template}/tests
+test: clean check-syntax-errors check-style check-types
 	@##	Usage:
 	@##
 	@##		make test [pytest_args="--ARG"] [openfisca_args="--ARG"]
@@ -68,16 +62,26 @@ test:: \
 	@##		make test pytest_args="--exitfirst"
 	@##		make test openfisca_args="--performance"
 	@##		make test pytest_args="--exitfirst" openfisca_args="--performance"
+	@##
+	@$(call help,$@:)
+	@${MAKE} test.core
+	@${MAKE} test.country
+	@${MAKE} test.extension
+
+# Run openfisca-core tests.
+test.core: $(shell git ls-files "tests/*.py")
+	@$(call help,$@:)
+	@PYTEST_ADDOPTS="${PYTEST_ADDOPTS} --cov=openfisca_core ${pytest_args}" openfisca test $?
+
+# Run country-template tests.
+test.country: ${python_packages}/openfisca_country_template/tests
+	@$(call help,$@:)
+	@PYTEST_ADDOPTS="${PYTEST_ADDOPTS} ${pytest_args}" openfisca test $? --country-package openfisca_country_template ${openfisca_args}
+
+# Run extension-template tests.
+test.extension: ${python_packages}/openfisca_extension_template/tests
 	@$(call help,$@:)
-	@PYTEST_ADDOPTS=" \
-		${PYTEST_ADDOPTS} \
-		--cov=openfisca_core \
-		${pytest_args} \
-		" \
-	openfisca test $? \
-		--country-package ${country_template} \
-		--extensions ${extension_template} \
-		${openfisca_args}
+	@PYTEST_ADDOPTS="${PYTEST_ADDOPTS} ${pytest_args}" openfisca test $? --country-package openfisca_country_template --extensions openfisca_extension_template ${openfisca_args}
 
 ## Serve the openfisca Web API.
 api: