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- // Copyright 2015 The Go Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style
- // license that can be found in the LICENSE file.
- package big
- import (
- "bytes"
- "encoding/gob"
- "encoding/json"
- "encoding/xml"
- "testing"
- )
- var encodingTests = []string{
- "0",
- "1",
- "2",
- "10",
- "1000",
- "1234567890",
- "298472983472983471903246121093472394872319615612417471234712061",
- }
- func TestIntGobEncoding(t *testing.T) {
- var medium bytes.Buffer
- enc := gob.NewEncoder(&medium)
- dec := gob.NewDecoder(&medium)
- for _, test := range encodingTests {
- for _, sign := range []string{"", "+", "-"} {
- x := sign + test
- medium.Reset() // empty buffer for each test case (in case of failures)
- var tx Int
- tx.SetString(x, 10)
- if err := enc.Encode(&tx); err != nil {
- t.Errorf("encoding of %s failed: %s", &tx, err)
- continue
- }
- var rx Int
- if err := dec.Decode(&rx); err != nil {
- t.Errorf("decoding of %s failed: %s", &tx, err)
- continue
- }
- if rx.Cmp(&tx) != 0 {
- t.Errorf("transmission of %s failed: got %s want %s", &tx, &rx, &tx)
- }
- }
- }
- }
- // Sending a nil Int pointer (inside a slice) on a round trip through gob should yield a zero.
- // TODO: top-level nils.
- func TestGobEncodingNilIntInSlice(t *testing.T) {
- buf := new(bytes.Buffer)
- enc := gob.NewEncoder(buf)
- dec := gob.NewDecoder(buf)
- var in = make([]*Int, 1)
- err := enc.Encode(&in)
- if err != nil {
- t.Errorf("gob encode failed: %q", err)
- }
- var out []*Int
- err = dec.Decode(&out)
- if err != nil {
- t.Fatalf("gob decode failed: %q", err)
- }
- if len(out) != 1 {
- t.Fatalf("wrong len; want 1 got %d", len(out))
- }
- var zero Int
- if out[0].Cmp(&zero) != 0 {
- t.Fatalf("transmission of (*Int)(nil) failed: got %s want 0", out)
- }
- }
- func TestIntJSONEncoding(t *testing.T) {
- for _, test := range encodingTests {
- for _, sign := range []string{"", "+", "-"} {
- x := sign + test
- var tx Int
- tx.SetString(x, 10)
- b, err := json.Marshal(&tx)
- if err != nil {
- t.Errorf("marshaling of %s failed: %s", &tx, err)
- continue
- }
- var rx Int
- if err := json.Unmarshal(b, &rx); err != nil {
- t.Errorf("unmarshaling of %s failed: %s", &tx, err)
- continue
- }
- if rx.Cmp(&tx) != 0 {
- t.Errorf("JSON encoding of %s failed: got %s want %s", &tx, &rx, &tx)
- }
- }
- }
- }
- func TestIntXMLEncoding(t *testing.T) {
- for _, test := range encodingTests {
- for _, sign := range []string{"", "+", "-"} {
- x := sign + test
- var tx Int
- tx.SetString(x, 0)
- b, err := xml.Marshal(&tx)
- if err != nil {
- t.Errorf("marshaling of %s failed: %s", &tx, err)
- continue
- }
- var rx Int
- if err := xml.Unmarshal(b, &rx); err != nil {
- t.Errorf("unmarshaling of %s failed: %s", &tx, err)
- continue
- }
- if rx.Cmp(&tx) != 0 {
- t.Errorf("XML encoding of %s failed: got %s want %s", &tx, &rx, &tx)
- }
- }
- }
- }
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