learn_golang/learn_go_with_tests/arrays/sum_test.go

package arrays

import "testing"

// go test -cover will show the test coverage for our package.

func TestSum(t *testing.T) {

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

		got := Sum(numbers)
		expected := 15

		// https://pkg.go.dev/fmt
		if got != expected {
			t.Errorf("got %d expected %d given, %v", got, expected, numbers)
		}
	})

	// go test -cover will show the test coverage for our package.

	// You can see that commenting out this "duplicate" function still retains 100%
	// test coverage, which is how we know it's redundant.

	// t.Run("sum a collection of any size", func(t *testing.T) {
	// 	numbers := []int{1, 2, 3}

	// 	got := Sum(numbers)
	// 	expected := 6

	// 	// https://pkg.go.dev/fmt
	// 	if got != expected {
	// 		t.Errorf("got %d expected %d given, %v", got, expected, numbers)
	// 	}
	// })

}