/
day16_test.go
143 lines (137 loc) · 2.56 KB
/
day16_test.go
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package main
import (
"fmt"
"reflect"
"testing"
)
type spTC struct {
in string
want *packet
wantVerSum int
wantEV int64
}
func TestStreamParser(t *testing.T) {
cases := []spTC{
{
in: "D2FE28",
want: &packet{version: 6, id: 4, literal: 2021},
},
{
in: "38006F45291200",
want: &packet{version: 1, id: 6, packets: []*packet{
{version: 6, id: 4, literal: 10},
{version: 2, id: 4, literal: 20},
}},
},
{
in: "EE00D40C823060",
want: &packet{version: 7, id: 3, packets: []*packet{
{version: 2, id: 4, literal: 1},
{version: 4, id: 4, literal: 2},
{version: 1, id: 4, literal: 3},
}},
},
{
in: "8A004A801A8002F478",
want: &packet{version: 4, id: 2, packets: []*packet{
{version: 1, id: 2, packets: []*packet{
{version: 5, id: 2, packets: []*packet{
{version: 6, id: 4, literal: 15},
}},
}},
}},
wantVerSum: 16,
},
{
in: "620080001611562C8802118E34",
wantVerSum: 12,
},
{
in: "C0015000016115A2E0802F182340",
wantVerSum: 23,
},
{
in: "A0016C880162017C3686B18A3D4780",
wantVerSum: 31,
},
}
for i, c := range cases {
t.Run(fmt.Sprintf("case[%d]=%q", i, c.in), func(t *testing.T) {
b, err := newBitStream([]byte(c.in))
if err != nil {
t.Fatal(err)
}
got, err := readPacket(b)
if err != nil {
t.Fatal(err)
}
if c.want != nil {
if !reflect.DeepEqual(got, c.want) {
t.Errorf("readPacket() = %v, want %v", got, c.want)
}
}
if c.wantVerSum != 0 {
gotSum := packetVersionSum(got)
if gotSum != c.wantVerSum {
t.Errorf("packetVersionSum()=%d, want %d", gotSum, c.wantVerSum)
}
}
})
}
}
type evalTC struct {
in string
wantEV int64
}
func TestPacketEval(t *testing.T) {
cases := []evalTC{
{
in: "C200B40A82",
wantEV: 3,
},
{
in: "04005AC33890",
wantEV: 54,
},
{
in: "880086C3E88112",
wantEV: 7,
},
{
in: "CE00C43D881120",
wantEV: 9,
},
{
in: "D8005AC2A8F0",
wantEV: 1,
},
{
in: "F600BC2D8F",
wantEV: 0,
},
{
in: "9C005AC2F8F0",
wantEV: 0,
},
{
in: "9C0141080250320F1802104A08",
wantEV: 1,
},
}
for i, c := range cases {
t.Run(fmt.Sprintf("case[%d]=%q", i, c.in), func(t *testing.T) {
b, err := newBitStream([]byte(c.in))
if err != nil {
t.Fatal(err)
}
p, err := readPacket(b)
if err != nil {
t.Fatal(err)
}
got := packetEvaluate(p)
if got != c.wantEV {
t.Errorf("packetEvaluate()=%d, want %d", got, c.wantEV)
}
})
}
}