go-test

name	go-test
description	Go testing package. Use for Go testing.

Go Test

Go has a built-in testing framework in the testing package. It follows Go's effective, minimalist philosophy: no magic, just code.

When to Use

• Go Projects: It is the standard. No 3rd party runner needed.
• Benchmarks: Built-in support (func BenchmarkXxx(b *testing.B)).

Quick Start

// main_test.go
package main

import "testing"

func TestAdd(t *testing.T) {
    got := Add(1, 2)
    want := 3
    if got != want {
        t.Errorf("Add(1, 2) = %d; want %d", got, want)
    }
}

Run with go test ./....

Core Concepts

Table Driven Tests

The idiomatic way to write Go tests. Define a slice of structs with input/output, then loop range over them.

tests := []struct {
    input int
    want  int
}{
    {1, 2},
    {2, 4},
}
for _, tc := range tests {
    t.Run(,  { ... })
}