How to write golang unit test

The go language attaches great importance to unit testing, not to mention the background of other authors, open source libraries, third-party support, etc., there are two points The point that allows me to pay attention to the GO language about unit testing is:

让 让 语 源 让 让 让 让 让 让 让 让 让 让 让 让 (Recommended Learning: go

)

The Go language comes with unit testing commands

From these two points, I think testing plays a very important role in the Go language, so in this article, I Also try to talk about Go language unit testing.

Writing Go unit test code

Go's testing method seems relatively low-level. It relies on the command go test and some test functions that can be run with go test. Write a convention. However, I think this is the so-called Go style. Since using Go, my feeling is that the Go language is a language that maintains the C language programming habits.

Golang language provides a set of unit test writing specifications. Let’s briefly demonstrate this writing method

## Unit test files must end with .go

The test function is very simple

calc.go

package main
 
func add(a, b int) int {
	return a + b
}

calc_test.go

package main
 
import "testing"
 
func TestAdd(t *testing.T) {
r := add(2, 4)
if r != 6 {
t.Fatalf("add(2, 4) error, expect:%d, actual:%d", 6, r)
}
t.Logf("test add succ")
}

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