feat: mail service

mail/internal/adapters/redisstate/codecs_test.go

@@ -0,0 +1,124 @@
+package redisstate
+
+import (
+	"bytes"
+	"testing"
+
+	"galaxy/mail/internal/domain/attempt"
+	deliverydomain "galaxy/mail/internal/domain/delivery"
+	"galaxy/mail/internal/domain/idempotency"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestDeliveryCodecRoundTrip(t *testing.T) {
+	t.Parallel()
+
+	record := validDelivery(t)
+
+	payload, err := MarshalDelivery(record)
+	require.NoError(t, err)
+
+	decoded, err := UnmarshalDelivery(payload)
+	require.NoError(t, err)
+	require.Equal(t, record, decoded)
+}
+
+func TestAttemptCodecRoundTrip(t *testing.T) {
+	t.Parallel()
+
+	record := validTerminalAttempt(t, validDelivery(t).DeliveryID)
+
+	payload, err := MarshalAttempt(record)
+	require.NoError(t, err)
+
+	decoded, err := UnmarshalAttempt(payload)
+	require.NoError(t, err)
+	require.Equal(t, record, decoded)
+}
+
+func TestIdempotencyCodecRoundTrip(t *testing.T) {
+	t.Parallel()
+
+	deliveryRecord := validDelivery(t)
+	record := validIdempotencyRecord(t, deliveryRecord.Source, deliveryRecord.DeliveryID, deliveryRecord.IdempotencyKey)
+
+	payload, err := MarshalIdempotency(record)
+	require.NoError(t, err)
+
+	decoded, err := UnmarshalIdempotency(payload)
+	require.NoError(t, err)
+	require.Equal(t, record, decoded)
+}
+
+func TestDeadLetterCodecRoundTrip(t *testing.T) {
+	t.Parallel()
+
+	record := validDeadLetterEntry(t, validDelivery(t).DeliveryID)
+
+	payload, err := MarshalDeadLetter(record)
+	require.NoError(t, err)
+
+	decoded, err := UnmarshalDeadLetter(payload)
+	require.NoError(t, err)
+	require.Equal(t, record, decoded)
+}
+
+func TestDeliveryCodecRejectsUnknownField(t *testing.T) {
+	t.Parallel()
+
+	payload, err := MarshalDelivery(validDelivery(t))
+	require.NoError(t, err)
+
+	payload = append(payload[:len(payload)-1], []byte(`,"extra":true}`)...)
+
+	_, err = UnmarshalDelivery(payload)
+	require.Error(t, err)
+	require.ErrorContains(t, err, "unknown field")
+}
+
+func TestAttemptCodecRejectsWrongType(t *testing.T) {
+	t.Parallel()
+
+	payload, err := MarshalAttempt(validTerminalAttempt(t, validDelivery(t).DeliveryID))
+	require.NoError(t, err)
+
+	payload = bytes.Replace(payload, []byte(`"attempt_no":2`), []byte(`"attempt_no":"2"`), 1)
+
+	_, err = UnmarshalAttempt(payload)
+	require.Error(t, err)
+	require.ErrorContains(t, err, "cannot unmarshal")
+}
+
+func TestIdempotencyCodecRejectsTrailingJSON(t *testing.T) {
+	t.Parallel()
+
+	deliveryRecord := validDelivery(t)
+	payload, err := MarshalIdempotency(validIdempotencyRecord(t, deliveryRecord.Source, deliveryRecord.DeliveryID, deliveryRecord.IdempotencyKey))
+	require.NoError(t, err)
+
+	payload = append(payload, []byte(` {}`)...)
+
+	_, err = UnmarshalIdempotency(payload)
+	require.Error(t, err)
+	require.ErrorContains(t, err, "unexpected trailing JSON input")
+}
+
+func TestDeadLetterCodecRejectsUnknownField(t *testing.T) {
+	t.Parallel()
+
+	payload, err := MarshalDeadLetter(validDeadLetterEntry(t, validDelivery(t).DeliveryID))
+	require.NoError(t, err)
+
+	payload = append(payload[:len(payload)-1], []byte(`,"unexpected":"value"}`)...)
+
+	_, err = UnmarshalDeadLetter(payload)
+	require.Error(t, err)
+	require.ErrorContains(t, err, "unknown field")
+}
+
+var (
+	_ = attempt.Attempt{}
+	_ = deliverydomain.DeadLetterEntry{}
+	_ = idempotency.Record{}
+)