math/big: Add text marshaller interface to Int
Fixes #7329
LGTM=gri
R=gri, bradfitz, mtj
CC=golang-codereviews
https://golang.org/cl/63710043
diff --git a/src/pkg/math/big/int_test.go b/src/pkg/math/big/int_test.go
index 87b975d..3dd9c5b 100644
--- a/src/pkg/math/big/int_test.go
+++ b/src/pkg/math/big/int_test.go
@@ -9,6 +9,7 @@
"encoding/gob"
"encoding/hex"
"encoding/json"
+ "encoding/xml"
"fmt"
"math/rand"
"testing"
@@ -1528,6 +1529,58 @@
}
}
+var intVals = []string{
+ "-141592653589793238462643383279502884197169399375105820974944592307816406286",
+ "-1415926535897932384626433832795028841971",
+ "-141592653589793",
+ "-1",
+ "0",
+ "1",
+ "141592653589793",
+ "1415926535897932384626433832795028841971",
+ "141592653589793238462643383279502884197169399375105820974944592307816406286",
+}
+
+func TestIntJSONEncodingTextMarshaller(t *testing.T) {
+ for _, num := range intVals {
+ var tx Int
+ tx.SetString(num, 0)
+ 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 TestIntXMLEncodingTextMarshaller(t *testing.T) {
+ for _, num := range intVals {
+ var tx Int
+ tx.SetString(num, 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)
+ }
+ }
+}
+
func TestIssue2607(t *testing.T) {
// This code sequence used to hang.
n := NewInt(10)
