func TestVarBind(t *testing.T) {
var v snmpclient2.VariableBinding
oid, _ := snmpclient2.ParseOidFromString("1.3.6.1.2.1.1.1.0")
v = snmpclient2.VariableBinding{Oid: oid}
v.Variable = snmpclient2.NewInteger(-2147483648)
testVarBind(t, &v,
`{"Oid": "1.3.6.1.2.1.1.1.0", "Variable": {"Type": "int", "Value": "-2147483648"}}`)
v.Variable = snmpclient2.NewOctetString([]byte("MyHost"))
testVarBind(t, &v,
`{"Oid": "1.3.6.1.2.1.1.1.0", "Variable": {"Type": "octets", "Value": "4d79486f7374"}}`)
v.Variable = snmpclient2.NewNull()
testVarBind(t, &v, `{"Oid": "1.3.6.1.2.1.1.1.0", "Variable": {"Type": "null", "Value": ""}}`)
v.Variable = snmpclient2.NewCounter32(uint32(4294967295))
testVarBind(t, &v,
`{"Oid": "1.3.6.1.2.1.1.1.0", "Variable": {"Type": "counter32", "Value": "4294967295"}}`)
v.Variable = snmpclient2.NewCounter64(uint64(18446744073709551615))
testVarBind(t, &v, `{"Oid": "1.3.6.1.2.1.1.1.0", `+
`"Variable": {"Type": "counter64", "Value": "18446744073709551615"}}`)
expBuf := []byte{0x30, 0x00}
v = snmpclient2.VariableBinding{}
buf, err := v.Marshal()
if err != nil {
t.Errorf("Marshal() : %v", err)
}
if !bytes.Equal(expBuf, buf) {
t.Errorf("Marshal() - expected [%s], actual [%s]",
snmpclient2.ToHexStr(expBuf, " "), snmpclient2.ToHexStr(buf, " "))
}
buf = []byte{0x00, 0x00}
_, err = (&v).Unmarshal(buf)
if err == nil {
t.Errorf("Unmarshal() : can not validation")
}
}
func testVarBind(t *testing.T, v *snmpclient2.VariableBinding, expStr string) {
var w snmpclient2.VariableBinding
buf, err := v.Marshal()
if err != nil {
t.Errorf("Marshal() : %v", err)
}
rest, err := (&w).Unmarshal(buf)
if len(rest) != 0 || err != nil {
t.Errorf("Unmarshal() - len[%d] err[%v]", len(rest), err)
}
if expStr != w.String() {
t.Errorf("Unmarshal() - expected [%s], actual [%s]", expStr, w.String())
}
buf = append(buf, 0x00)
rest, err = (&w).Unmarshal(buf)
if len(rest) != 1 || err != nil {
t.Errorf("Unmarshal() with rest - len[%d] err[%v]", len(rest), err)
}
if expStr != w.String() {
t.Errorf("Unmarshal() - expected [%s], actual [%s]", expStr, w.String())
}
}