Unit Test and Integration Test

Unit Test and Integration Test

Background

It is the first time that I try to write an article in English.

In the past, I didn’t write test code. Just thinking QA is responsible for testing.
As a developer, I don’t need to care about tests.
Although I know tests are essential, I can’t be aware of their importance.

After I joined my current team, it is required for developers to write tests.
So I have to write tests code.

After 8 months, I realize that tests are critical. I need to enforce my ability of testing.

therefore, I recently read a book Vladimir Khorikov - Unit Testing Principles Practices and Patterns.
Learned a lot of unit test and integration best practice and code design.

So I want to share some knowledge with you.

Test

There are two kinds of tests.

• Unit Test
• Integration Test
  • end to end test

Test Coverage

Do we need a 100% test coverage?

No. We don’t.

For trivial code, we can ignore that. Because they aren’t worth it.
We should focus on our business logic.

If a metric shows that there’s too little coverage in your code base—say