go-by-test/sum/sum_test.go

package sum

import (
	"reflect"
	"testing"
)

func TestSum(t *testing.T) {
	t.Run("collection of 5 numbers", func(t *testing.T) {
		numbers := []int{1, 2, 3, 4, 5}

		got := Sum(numbers)
		exp := 15

		if got != exp {
			t.Errorf("got %d, expected %d, given %v", got, exp, numbers)
		}
	})
}

func TestSumAll(t *testing.T) {
	got := SumAll([]int{1, 2}, []int{0, 9})
	exp := []int{3, 9}

	// NOTE: check if any two variables are the same
	if !reflect.DeepEqual(got, exp) {
		t.Errorf("got %d, expected %d", got, exp)
	}
}