// 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 TestIntJSONEncodingNil(t *testing.T) { var x *Int b, err := x.MarshalJSON() if err != nil { t.Fatalf("marshaling of nil failed: %s", err) } got := string(b) want := "null" if got != want { t.Fatalf("marshaling of nil failed: got %s want %s", got, want) } } 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) } } } }