Implement resumable download queue (T-301)

2026-07-16 19:49:06 +08:00
parent 2d302b731a
commit 8dad40f934
27 changed files with 5498 additions and 18 deletions
@@ -0,0 +1,102 @@
+package downloader
+
+import (
+	"context"
+	"reflect"
+	"testing"
+
+	"softbox.local/core/application"
+)
+
+func TestApplicationObserverUsesConcretePayloads(t *testing.T) {
+	publisher := &recordingApplicationPublisher{}
+	observer := ApplicationObserver{Publisher: publisher}
+	tests := []struct {
+		event       Event
+		wantType    application.EventType
+		wantPayload any
+	}{
+		{
+			event: Event{
+				Type: EventStarted, RequestID: "request-1", AppID: "app-1",
+				Attempt: 1, Done: 2, TotalKnown: true, Total: 10,
+			},
+			wantType: application.EventDownloadStarted,
+			wantPayload: application.DownloadStartedPayload{
+				Attempt: 1, Done: 2, TotalKnown: true, Total: 10,
+			},
+		},
+		{
+			event: Event{
+				Type: EventProgress, RequestID: "request-1", AppID: "app-1",
+				Attempt: 1, Done: 4, TotalKnown: true, Total: 10, SpeedBytesSec: 2,
+			},
+			wantType: application.EventDownloadProgress,
+			wantPayload: application.DownloadProgressPayload{
+				Attempt: 1, Done: 4, TotalKnown: true, Total: 10, SpeedBytesSec: 2,
+			},
+		},
+		{
+			event: Event{
+				Type: EventPaused, RequestID: "request-1", AppID: "app-1",
+				Attempt: 1, Done: 4,
+			},
+			wantType:    application.EventDownloadPaused,
+			wantPayload: application.DownloadPausedPayload{Attempt: 1, Done: 4},
+		},
+		{
+			event: Event{
+				Type: EventCompleted, RequestID: "request-1", AppID: "app-1",
+				Attempt: 1, Done: 10, CompletedPath: "download",
+			},
+			wantType: application.EventDownloadCompleted,
+			wantPayload: application.DownloadCompletedPayload{
+				Attempt: 1, Done: 10, Path: "download",
+			},
+		},
+		{
+			event: Event{
+				Type: EventFailed, RequestID: "request-1", AppID: "app-1",
+				Attempt: 1, Done: 4, ErrorCode: "http_status",
+			},
+			wantType: application.EventDownloadFailed,
+			wantPayload: application.DownloadFailedPayload{
+				Attempt: 1, Done: 4, ErrorCode: "http_status",
+			},
+		},
+		{
+			event: Event{
+				Type: EventCanceled, RequestID: "request-1", AppID: "app-1",
+				Attempt: 1,
+			},
+			wantType:    application.EventDownloadCanceled,
+			wantPayload: application.DownloadCanceledPayload{Attempt: 1},
+		},
+	}
+	for _, test := range tests {
+		if err := observer.PublishDownload(context.Background(), test.event); err != nil {
+			t.Fatalf("PublishDownload(%s) error = %v", test.event.Type, err)
+		}
+		got := publisher.events[len(publisher.events)-1]
+		if got.Type != test.wantType ||
+			got.RequestID != test.event.RequestID ||
+			got.AppID != test.event.AppID {
+			t.Fatalf("event = %#v", got)
+		}
+		if !reflect.DeepEqual(got.Payload, test.wantPayload) {
+			t.Fatalf("payload = %#v, want %#v", got.Payload, test.wantPayload)
+		}
+	}
+}
+
+type recordingApplicationPublisher struct {
+	events []application.Event
+}
+
+func (publisher *recordingApplicationPublisher) Publish(
+	_ context.Context,
+	event application.Event,
+) error {
+	publisher.events = append(publisher.events, event)
+	return nil
+}