Makefile: add test.pep8 test.unit test.robot (from manage.sh)

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

Makefile

@@ -10,6 +10,7 @@ all: clean install
 
 PHONY += help
 help:
+	@echo  '  test      - run developer tests'
 	@echo  '  run       - run developer instance'
 	@echo  '  install   - developer install (./local)'
 	@echo  '  uninstall - uninstall (./local)'
@@ -39,4 +40,21 @@ run:  pyenvinstall
 	) &
 	$(PY_ENV)/bin/python ./searx/webapp.py
 
+# test
+# ----
+
+PHONY += test test.pep8 test.unit test.robot
+
+test: test.pep8 test.unit test.robot
+
+test.pep8: pyenvinstall
+	$(PY_ENV_ACT); ./manage.sh pep8_check
+
+test.unit: pyenvinstall
+	$(PY_ENV_ACT); ./manage.sh unit_tests
+
+test.robot: pyenvinstall
+	$(PY_ENV_ACT); ./manage.sh install_geckodriver
+	$(PY_ENV_ACT); ./manage.sh robot_tests
+
 .PHONY: $(PHONY)