package sys

import "testing"

func TestParseCents(t *testing.T) {
	tests := []struct {
		value string
		want  int64
	}{
		{"0", 0},
		{"0.01", 1},
		{"12.3", 1230},
		{"999.99", 99999},
	}
	for _, item := range tests {
		got, err := parseCents(item.value)
		if err != nil {
			t.Fatalf("parseCents(%q) returned error: %v", item.value, err)
		}
		if got != item.want {
			t.Fatalf("parseCents(%q)=%d, want %d", item.value, got, item.want)
		}
	}
}

func TestParseCentsRejectsInvalidValues(t *testing.T) {
	for _, value := range []string{"", "-1", "1.001", "abc", "1.2.3"} {
		if _, err := parseCents(value); err == nil {
			t.Fatalf("parseCents(%q) should fail", value)
		}
	}
}