feat: preview task canvases with workspace data (#3887)

apps/backend/internal/backendapp/canvas_authoring_test.go

@@ -0,0 +1,28 @@
+package backendapp
+
+import (
+	"testing"
+
+	"github.com/kandev/kandev/internal/canvas"
+	"github.com/kandev/kandev/internal/plugins/instances"
+)
+
+func TestCanvasPublishAuthorityCapturesPlacementAndDataScope(t *testing.T) {
+	item := &canvas.Canvas{
+		PluginInstanceID: "instance-1",
+		ScopeKind:        canvas.ScopeTask,
+		DataScopeKind:    instances.ScopeWorkspace,
+		WorkspaceID:      "workspace-1",
+		TaskID:           "task-1",
+		Status:           canvas.StatusActive,
+		GrantGeneration:  4,
+	}
+
+	authority := canvasPublishAuthority(item)
+	if authority.ScopeKind != canvas.ScopeTask || authority.DataScopeKind != instances.ScopeWorkspace {
+		t.Fatalf("publish authority scopes = placement %q, data %q; want task placement and workspace data", authority.ScopeKind, authority.DataScopeKind)
+	}
+	if authority.InstanceID != item.PluginInstanceID || authority.WorkspaceID != item.WorkspaceID || authority.TaskID != item.TaskID || authority.Status != item.Status || authority.GrantGeneration != item.GrantGeneration {
+		t.Fatalf("publish authority = %+v, missing current canvas state", authority)
+	}
+}