Return non zero if any test fails

Author: auxten

Makefile

@@ -13,7 +13,6 @@ wheel:
 test:
 	@echo "Testing..."
 	cd tests && python3 run_all.py
-	@echo "Done."
 
 pub:
 	@echo "Publishing wheel..."

tests/run_all.py

@@ -2,10 +2,14 @@
 
 import unittest
 
-# 使用 TestLoader() 加载所有测试模块
 test_loader = unittest.TestLoader()
 test_suite = test_loader.discover('./')
 
-# 使用 TextTestRunner() 运行测试套件
 test_runner = unittest.TextTestRunner()
-test_runner.run(test_suite)
+ret = test_runner.run(test_suite)
+
+# if any test fails, exit with non-zero code
+if len(ret.failures) > 0 or len(ret.errors) > 0:
+    exit(1)
+else:
+    exit(0)