93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package packet
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import (
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"bytes"
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"testing"
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)
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var VarInts = []VarInt{0, 1, 2, 127, 128, 255, 2147483647, -1, -2147483648}
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var PackedVarInts = [][]byte{
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{0x00},
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{0x01},
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{0x02},
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{0x7f},
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{0x80, 0x01},
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{0xff, 0x01},
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{0xff, 0xff, 0xff, 0xff, 0x07},
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{0xff, 0xff, 0xff, 0xff, 0x0f},
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{0x80, 0x80, 0x80, 0x80, 0x08},
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}
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func TestPackVarInt(t *testing.T) {
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var buf bytes.Buffer
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for i, v := range VarInts {
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buf.Reset()
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if n, err := v.WriteTo(&buf); err != nil {
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t.Fatalf("Write to bytes.Buffer should never fail: %v", err)
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} else if n != int64(buf.Len()) {
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t.Errorf("Number of byte returned by WriteTo should equal to buffer.Len()")
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}
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if p := buf.Bytes(); !bytes.Equal(p, PackedVarInts[i]) {
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t.Errorf("pack int %d should be \"% x\", get \"% x\"", v, PackedVarInts[i], p)
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}
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}
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}
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func TestUnpackVarInt(t *testing.T) {
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for i, v := range PackedVarInts {
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var vi VarInt
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if _, err := vi.ReadFrom(bytes.NewReader(v)); err != nil {
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t.Errorf("unpack \"% x\" error: %v", v, err)
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}
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if vi != VarInts[i] {
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t.Errorf("unpack \"% x\" should be %d, get %d", v, VarInts[i], vi)
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}
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}
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}
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func TestUnpackVarInt_TooLongData(t *testing.T) {
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var vi VarInt
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var data = []byte{0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01}
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if _, err := vi.ReadFrom(bytes.NewReader(data)); err != nil {
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t.Logf("unpack \"% x\" error: %v", data, err)
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} else {
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t.Errorf("unpack \"% x\" should be error, get %d", data, vi)
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}
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}
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var VarLongs = []VarLong{0, 1, 2, 127, 128, 255, 2147483647, 9223372036854775807, -1, -2147483648, -9223372036854775808}
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var PackedVarLongs = [][]byte{
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{0x00},
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{0x01},
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{0x02},
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{0x7f},
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{0x80, 0x01},
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{0xff, 0x01},
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{0xff, 0xff, 0xff, 0xff, 0x07},
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{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f},
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{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01},
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{0x80, 0x80, 0x80, 0x80, 0xf8, 0xff, 0xff, 0xff, 0xff, 0x01},
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{0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x01},
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}
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func TestPackVarLong(t *testing.T) {
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for i, v := range VarLongs {
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p := v.Encode()
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if !bytes.Equal(p, PackedVarLongs[i]) {
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t.Errorf("pack long %d should be \"% x\", get \"% x\"", v, PackedVarLongs[i], p)
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}
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}
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}
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func TestUnpackVarLong(t *testing.T) {
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for i, v := range PackedVarLongs {
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var vi VarLong
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if _, err := vi.ReadFrom(bytes.NewReader(v)); err != nil {
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t.Errorf("unpack \"% x\" error: %v", v, err)
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}
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if vi != VarLongs[i] {
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t.Errorf("unpack \"% x\" should be %d, get %d", v, VarLongs[i], vi)
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}
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}
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}
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