What makes a good unit test?

Related questions

1. Is xUnit better than NUnit?
2. Is NUnit open source?
3. How do I run xUnit test?
4. What is xUnit test?
5. Does NUnit support .NET core?
6. What is the main purpose of integration testing?
7. Can we use both TestNG and JUnit?
8. Do developers write test cases?
9. What is JUnit Jupiter API?
10. Why testing should not be done by developers?

Tags

1. #shouldn
2. #general
3. #doing
4. #isolated
5. #looked
6. #system
7. #because
8. #second
9. #longer
10. #database
11. #normally
12. #should
13. #takes
14. #accessing
15. #network
16. #tests
17. #something
18. #needs