add_slice_of_numbers_test.go

package array

import (
	"slices"
	"testing"
)

/*
TestAddSliceOfTwoNumbers tests solution(s) with the following signature and problem description:

	AddTwoNumbers(num1, num2 []int) []int

A slice representation of a positive integer like 283 looks like {2,8,3}. Given two positive
integers represented in this format return their sum in the same format.

For example given {2,9} and {9,9,9}, return {1,0,2,8}.
Because 29+999=1028.
*/
func TestAddSliceOfTwoNumbers(t *testing.T) {
	tests := []struct {
		num1, num2, sum []int
	}{
		{[]int{1}, []int{}, []int{1}},
		{[]int{1}, []int{0}, []int{1}},
		{[]int{1}, []int{1}, []int{2}},
		{[]int{1}, []int{9}, []int{1, 0}},
		{[]int{2, 5}, []int{3, 5}, []int{6, 0}},
		{[]int{2, 9}, []int{9, 9, 9}, []int{1, 0, 2, 8}},
		{[]int{9, 9, 9}, []int{9, 9, 9}, []int{1, 9, 9, 8}},
	}
	for i, test := range tests {
		if got := AddSliceOfTwoNumbers(test.num1, test.num2); !slices.Equal(got, test.sum) {
			t.Fatalf("Failed test case #%d. Want %v got %v", i, test.sum, got)
		}
	}
}