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When MarshalJSON was defined on a pointer receiver custom enum type marshaling/unmarshaling was panicing since the underlying primitive type was treated as a pointer. Since method set for pointer receivers includes value receiver methods we don't really need optionalEncoder and can just use marshalEncoder directly.
51 lines
806 B
Go
51 lines
806 B
Go
package jsoniter
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import (
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"fmt"
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"testing"
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"github.com/stretchr/testify/require"
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)
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type MyEnum int64
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const (
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MyEnumA MyEnum = iota
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MyEnumB
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)
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func (m *MyEnum) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf(`"foo-%d"`, int(*m))), nil
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}
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func (m *MyEnum) UnmarshalJSON(jb []byte) error {
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switch string(jb) {
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case `"foo-1"`:
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*m = MyEnumB
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default:
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*m = MyEnumA
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}
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return nil
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}
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func Test_custom_marshaler_on_enum(t *testing.T) {
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type Wrapper struct {
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Payload interface{}
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}
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type Wrapper2 struct {
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Payload MyEnum
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}
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should := require.New(t)
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w := Wrapper{Payload: MyEnumB}
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jb, err := Marshal(w)
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should.Equal(nil, err)
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should.Equal(`{"Payload":"foo-1"}`, string(jb))
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var w2 Wrapper2
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err = Unmarshal(jb, &w2)
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should.Equal(nil, err)
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should.Equal(MyEnumB, w2.Payload)
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}
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