Tell us about testing — do you write unit tests, what is your coverage?

Unit tests in Go are an important part of development. I write tests for key functions and components to ensure logical correctness and facilitate refactoring.

Coverage depends on the project, but I usually aim for about 70-90% coverage for business logic. For simple utilities and helper functions, coverage can be higher.

In Go, the testing package is used, and here is an example of a simple test:

func Add(a, b int) int {
    return a + b
}

func TestAdd(t *testing.T) {
    result := Add(2, 3)
    if result != 5 {
        t.Errorf("Expected 5, got %d", result)
    }
}

I also use mock objects and table-driven testing for convenience and scalability of tests.

It's important not only to the number of tests but also their quality — they should check different scenarios, including boundary cases and errors.