Makefile: add rudimentary tests

Author: robertswiecki

Makefile

@@ -132,6 +132,28 @@ install: $(BIN)
 	install -m 755 -d $(DESTDIR)$(MANDIR)
 	install -m 644 nsjail.1 $(DESTDIR)$(MANDIR)
 
+define run_test
+	@echo "Testing: $(1) (expecting exit code $(2))"; \
+	($(1)); ret=$$?; \
+	if [ "$$ret" -ne "$(2)" ]; then \
+		echo "❌ FAIL: '$(1)' returned $$ret, expected $(2)"; \
+		exit 1; \
+	else \
+		echo "✅ PASS: '$(1)' returned $$ret"; \
+	fi
+endef
+
+.PHONY: test
+test:
+	$(call run_test, ./nsjail -q -Mo --rw --chroot / --user 99999 --group 99999 -- /bin/bash -c 'touch $(HOME)/nsjail_test && exit 77', 77)
+	$(call run_test, ./nsjail -q -Mo --chroot / --user 99999 --group 99999 -- /bin/bash -c 'touch $(HOME)/nsjail_test || exit 77', 77)
+	$(call run_test, rm -f $(HOME)/nsjail_test, 0)
+	$(call run_test, ./nsjail --config configs/bash-with-fake-geteuid.cfg -q -t 1, 137)
+	$(call run_test, ./nsjail --config configs/bash-with-fake-geteuid.json -q -t 1, 137)
+	$(call run_test, ./nsjail --config configs/home-documents-with-xorg-no-net.cfg -q -- /bin/true, 0)
+	$(call run_test, ./nsjail --config configs/home-documents-with-xorg-no-net.cfg -q -- /bin/false, 1)
+	$(call run_test, ./nsjail --config configs/firefox-with-net-wayland.cfg -q -t 4, 137)
+
 # Dependencies (Generated by makedepend)
 # DO NOT DELETE THIS LINE -- make depend depends on it.