diff --git a/tests/unit/campaignQuickActionContext.unit.spec.tsx b/tests/unit/campaignQuickActionContext.unit.spec.tsx
new file mode 100644
index 00000000..efd7d7cf
--- /dev/null
+++ b/tests/unit/campaignQuickActionContext.unit.spec.tsx
@@ -0,0 +1,30 @@
+import { renderHook } from '@testing-library/react'
+import type { ReactNode } from 'react'
+import { describe, expect, it } from 'vitest'
+
+import {
+  CampaignQuickActionContextProvider,
+  useCampaignQuickActionContext,
+  useSetCampaignQuickActionContext,
+} from '@/components/campaign/shell/CampaignQuickActionContext'
+
+const wrapper = ({ children }: { children: ReactNode }) => (
+  <CampaignQuickActionContextProvider>{children}</CampaignQuickActionContextProvider>
+)
+
+describe('CampaignQuickActionContext', () => {
+  it('starts empty and accepts route context from B80+ setters', () => {
+    const { result, rerender } = renderHook(
+      () => {
+        useSetCampaignQuickActionContext({ municipalitySlug: 'cairu' })
+        return useCampaignQuickActionContext().context
+      },
+      { wrapper },
+    )
+
+    expect(result.current).toEqual({ municipalitySlug: 'cairu' })
+
+    rerender()
+    expect(result.current).toEqual({ municipalitySlug: 'cairu' })
+  })
+})