Notify callers from the prepared execution snapshot

internal/usecase/prepared_notification_test.go

@@ -0,0 +1,20 @@
+package usecase
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"go.maximumdirect.net/promptkit/internal/domain"
+)
+
+func TestPreparedNotificationChecksContextBeforeInvocation(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	called := false
+	_, err := (&Runner{}).executePreparedRun(ctx, &domain.PreparedRun{}, func(context.Context, *domain.PreparedRun) { called = true }, false, nil, "", 0, "", time.Time{}, nil)
+	if called || !errors.Is(err, context.Canceled) || !errors.Is(err, ErrLLMGenerate) {
+		t.Fatalf("called=%v error=%v", called, err)
+	}
+}