Struct testCase

5.1/calculator_test.go:10–13

func TestAdd(t *testing.T) {
	t.Parallel()
	type testCase struct {
		a, b float64
		want float64
	}
	testCases := []testCase{
		{a: 2, b: 2, want: 4},
		{a: 1, b: 1, want: 2},