AdGuardHome/internal/dhcpd/options_test.go

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package dhcpd
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestDHCPOptionParser(t *testing.T) {
testCases := []struct {
name string
in string
wantErrMsg string
wantData []byte
wantCode uint8
}{{
name: "hex_success",
in: "6 hex c0a80101c0a80102",
wantErrMsg: "",
wantData: []byte{0xC0, 0xA8, 0x01, 0x01, 0xC0, 0xA8, 0x01, 0x02},
wantCode: 6,
}, {
name: "ip_success",
in: "6 ip 1.2.3.4",
wantErrMsg: "",
wantData: []byte{0x01, 0x02, 0x03, 0x04},
wantCode: 6,
}, {
name: "ip_success_v6",
in: "6 ip ::1234",
wantErrMsg: "",
wantData: []byte{
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x12, 0x34,
},
wantCode: 6,
}, {
name: "ips_success",
in: "6 ips 192.168.1.1,192.168.1.2",
wantErrMsg: "",
wantData: []byte{0xC0, 0xA8, 0x01, 0x01, 0xC0, 0xA8, 0x01, 0x02},
wantCode: 6,
}, {
name: "text_success",
in: "252 text http://192.168.1.1/",
wantErrMsg: "",
wantData: []byte("http://192.168.1.1/"),
wantCode: 252,
}, {
name: "bad_parts",
in: "6 ip",
wantErrMsg: `invalid option string "6 ip": need at least three fields`,
wantCode: 0,
wantData: nil,
}, {
name: "bad_code",
in: "256 ip 1.1.1.1",
wantErrMsg: `invalid option string "256 ip 1.1.1.1": parsing option code: ` +
`strconv.ParseUint: parsing "256": value out of range`,
wantCode: 0,
wantData: nil,
}, {
name: "bad_type",
in: "6 bad 1.1.1.1",
wantErrMsg: `invalid option string "6 bad 1.1.1.1": unknown option type "bad"`,
wantCode: 0,
wantData: nil,
}, {
name: "hex_error",
in: "6 hex ZZZ",
wantErrMsg: `invalid option string "6 hex ZZZ": decoding hex: ` +
`encoding/hex: invalid byte: U+005A 'Z'`,
wantData: nil,
wantCode: 0,
}, {
name: "ip_error",
in: "6 ip 1.2.3.x",
wantErrMsg: `invalid option string "6 ip 1.2.3.x": invalid ip`,
wantData: nil,
wantCode: 0,
}, {
name: "ips_error",
in: "6 ips 192.168.1.1,192.168.1.x",
wantErrMsg: `invalid option string "6 ips 192.168.1.1,192.168.1.x": ` +
`parsing ip at index 1: invalid ip`,
wantData: nil,
wantCode: 0,
}}
p := newDHCPOptionParser()
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
code, data, err := p.parse(tc.in)
if tc.wantErrMsg == "" {
assert.Nil(t, err)
} else {
require.NotNil(t, err)
assert.Equal(t, tc.wantErrMsg, err.Error())
}
assert.Equal(t, tc.wantCode, code)
assert.Equal(t, tc.wantData, data)
})
}
}