SolidJSS
SolidJS•3y ago•
25 replies
Nathan

Testing difficulties in solid-start

I'm running into some perplexing errors with Vitest in my SSR-enabled Solid Start app. In the imports two files, I get Cannot set properties of undefined (setting 'modhash'). In one, it's caused by import { isBefore, parseISO } from "date-fns". In the other, by import { CentralStoreContext } from "../root".

In at least one of the test files, I've done my best to abstract the component being tested away from the routing, but I'm still getting this error.

My root.tsx:
...

export const CentralStoreContext =
  createContext<ReturnType<typeof useCentralStore>>()

export default function Root() {
  const ctx = useCentralStore()
  const location = useLocation()
  return (
    <Html lang="en">
      <Head>
        <Title>SolidStart - With TailwindCSS</Title>
        <Meta charset="utf-8" />
        <Meta name="viewport" content="width=device-width, initial-scale=1" />
      </Head>
      <Body>
        <Suspense>
          <SessionProvider>
            <Sidebar />
            <CentralStoreContext.Provider value={ctx}>
              <Routes>
                <FileRoutes />
              </Routes>
            </CentralStoreContext.Provider>
            <Scripts />
          </SessionProvider>
        </Suspense>
      </Body>
    </Html>
  )
}


And my vitest.config.ts:
/// <reference types="vitest" />
/// <reference types="vite/client" />
// 👆 do not forget to add the references above
import { defineConfig } from "vite"
import solid from "solid-start/vite"
export default defineConfig({
  plugins: [solid()],
  server: {
    port: 3000,
  },
  build: {
    target: "esnext",
  },
  test: {
    environment: "jsdom",
    globals: true,
    transformMode: { web: [/\.[jt]sx?$/] },
  },
  resolve: { conditions: ["development", "browser"] },
})
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