package main

import "testing"

func sum(values []int) int {
	total := 0
	for _, v := range values {
		total += v
	}
	return total
}
func TestSum(t *testing.T) {
	tests := []struct {
		name  string
		input []int
		want  int
	}{{"empty", nil, 0}, {"positive", []int{1, 2, 3}, 6}, {"mixed", []int{-2, 5}, 3}}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := sum(tt.input); got != tt.want {
				t.Fatalf("got %d want %d", got, tt.want)
			}
		})
	}
}