1 files changed, 18 insertions, 0 deletions
diff --git a/frontend/src/lib/wizardError.test.ts b/frontend/src/lib/wizardError.test.ts
new file mode 100644
index 0000000..43a6bb0
--- /dev/null
+++ b/frontend/src/lib/wizardError.test.ts
@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'vitest';
+// Live browser QA regression: a failing dataset submit (e.g. HTTP422/500 from
+// the backend) was captured into `submitErr` but never rendered, so the user
+// saw silently nothing. The wizard markup must surface submitErr.
+// Type support comes from vite/client's `*?raw` module declaration.
+import wizardSource from '../components/DatasetWizard.svelte?raw';
+
+describe('dataset wizard visible submit errors', () => {
+  it('renders backend submit failures (submitErr in template, not script-only)', () => {
+    const src: string = wizardSource as unknown as string;
+    // captured at least once
+    expect(src).toMatch(/submitErr = extractStatusMessage\(e\)/);
+    // and rendered outside the script: a template reference (Svelte template)
+    const template = src.slice(src.indexOf('/script') + 7);
+    expect(template).toMatch(/\{submitErr\}/);
+    expect(template).toMatch(/role="alert"/);
+  });
+});