Validate portable workspace identifiers

internal/app/paths_test_helpers_test.go

@@ -0,0 +1,16 @@
+package app
+
+import (
+	"testing"
+
+	"gitea.maximumdirect.net/eric/narratio/internal/artifacts"
+)
+
+func mustPreviousArtifactPathForCampaign(t *testing.T, root, campaign, sessionID, relative string) string {
+	t.Helper()
+	path, err := artifacts.SessionPreviousArtifactPathForCampaign(root, campaign, sessionID, relative)
+	if err != nil {
+		t.Fatalf("SessionPreviousArtifactPathForCampaign() error = %v", err)
+	}
+	return path
+}