add test rules

Author: dhellmann

Makefile

@@ -1,8 +1,32 @@
 
+.PHONY: sdist
 sdist: html
 	python setup.py sdist
 
+.PHONY: html
 html:
 	rm -rf virtualenvwrapper/docs
 	(cd docs && $(MAKE) html)
 	cp -r docs/build/html virtualenvwrapper/docs
+
+TEST_SCRIPTS=$(wildcard tests/test*.sh)
+
+.PHONY: test test-bash test-sh test-zsh test-loop
+test: test-bash test-sh test-zsh
+
+test-bash:
+	TEST_SHELL=bash $(MAKE) test-loop
+
+test-sh:
+	TEST_SHELL=sh $(MAKE) test-loop
+
+test-zsh:
+	TEST_SHELL="zsh -o shwordsplit" $(MAKE) test-loop
+
+test-loop:
+	@for test_script in $(wildcard tests/test*.sh) ; do \
+	 	echo '********************************************************************************' ; \
+		echo "Running $$test_script with $(TEST_SHELL)" ; \
+		SHUNIT_PARENT=$$test_script $(TEST_SHELL) $$test_script ; \
+		echo ; \
+	done