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Manual vs. Automated testing

• Manual testing is done in person, by clicking through the application or interacting with the software and APIs wit the appropriate tooling.
• Automated testing is performed by a machine that executes a test script that was written in advance.

There are some automated testing tools introduction: DevOps Software Testing Tutorials | Atlassian

The different types of tests

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This is the TDD Workfolw.

1. Write a test case, run it. If the test is passed, then write a new test case, run it. Until a test case is failed, set it to RED.
2. Then write code based on this test case, run the test case, if it is passed, then set it to GREEN. Else modify the code and repeat to test it, until it is passed.
3. After RED and GREEN steps, we can refactor the code to make it better, and don't forget to run the test.

At first time I saw the workflow of TDD, I was confused. If a test is passed at the beginning, what will happen for this test case.

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TDD Mantra

When learning about test driven development you'll soon cone across the "Red, Green, Refactor" mantra.

1. Red: We write a test that does not pass. It may not even compile or execute yet.
2. Green: We quickly write dirty code to make the test pass.
3. Refactor: We complete and clean the code using all of our test practices.

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Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

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General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules