package main

import (
	"testing"
)

func Test_sum(t *testing.T) {
	tests := []struct {
		a, b int
		want int
	}{
		{1, 2, 3},
		{-1, 1, 0},
		{0, 0, 0},
	}

	for _, test := range tests {
		if got := sum(test.a, test.b); got != test.want {
			t.Errorf("sum(%d, %d) = %d, want %d", test.a, test.b, got, test.want)
		}
	}
}

func Test_sub(t *testing.T) {
	tests := []struct {
		a, b int
		want int
	}{
		{1, 2, -1},
		{-1, 1, -2},
		{0, 0, 0},
	}

	for _, test := range tests {
		if got := sub(test.a, test.b); got != test.want {
			t.Errorf("sub(%d, %d) = %d, want %d", test.a, test.b, got, test.want)
		}
	}
}