Add 'third_party/nix/' from commit 'be66c7a6b24e3c3c6157fd37b86c7203d14acf10'

git-subtree-dir: third_party/nix
git-subtree-mainline: cf8cd640c1
git-subtree-split: be66c7a6b24e3c3c6157fd37b86c7203d14acf10

third_party/nix/mk/tests.mk

@@ -0,0 +1,45 @@
+# Run program $1 as part of ‘make installcheck’.
+define run-install-test
+
+  installcheck: $1
+
+  _installcheck-list += $1
+
+endef
+
+# Color code from https://unix.stackexchange.com/a/10065
+installcheck:
+	@total=0; failed=0; \
+	red=""; \
+	green=""; \
+	yellow=""; \
+	normal=""; \
+	if [ -t 1 ]; then \
+		red=""; \
+		green=""; \
+		yellow=""; \
+		normal=""; \
+	fi; \
+	for i in $(_installcheck-list); do \
+	  total=$$((total + 1)); \
+	  printf "running test $$i..."; \
+	  log="$$(cd $$(dirname $$i) && $(tests-environment) $$(basename $$i) 2>&1)"; \
+	  status=$$?; \
+	  if [ $$status -eq 0 ]; then \
+	    echo " [$${green}PASS$$normal]"; \
+	  elif [ $$status -eq 99 ]; then \
+	    echo " [$${yellow}SKIP$$normal]"; \
+	  else \
+	    echo " [$${red}FAIL$$normal]"; \
+	    echo "$$log" | sed 's/^/    /'; \
+	    failed=$$((failed + 1)); \
+	  fi; \
+	done; \
+	if [ "$$failed" != 0 ]; then \
+	  echo "$${red}$$failed out of $$total tests failed $$normal"; \
+	  exit 1; \
+	else \
+		echo "$${green}All tests succeeded$$normal"; \
+	fi
+
+.PHONY: check installcheck