feat(notify): dummy notifier writing structured log lines

internal/infra/notify/dummy_test.go

@@ -0,0 +1,26 @@
+package notify
+
+import (
+	"bytes"
+	"context"
+	"log/slog"
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDummy_Send_LogsAndReturnsNil(t *testing.T) {
+	var buf bytes.Buffer
+	log := slog.New(slog.NewJSONHandler(&buf, nil))
+	d := NewDummyNotifier(log)
+
+	require.Equal(t, ChannelDummy, d.Name())
+	err := d.Send(context.Background(), Message{
+		ID: uuid.New(), UserID: uuid.New(),
+		Topic: "x", Severity: SeverityInfo, Title: "hi", Body: "world",
+	})
+	require.NoError(t, err)
+	require.Contains(t, buf.String(), "notify[dummy]")
+	require.Contains(t, buf.String(), `"topic":"x"`)
+}