Function runTest

packages/react-router/tests/link.test.tsx:233–410

(opts: { explicitUndefined: boolean | undefined })

  describe('when the current route has a search fields with undefined values', () => {
    async function runTest(opts: { explicitUndefined: boolean | undefined }) {
      const rootRoute = createRootRoute()
      const indexRoute = createRoute({
        getParentRoute: () => rootRoute,
        path: '/',
        component: () => {
          return (
            <>
              <h1>Index</h1>
              <Link
                to="/"
                activeOptions={{ exact: true }}
                inactiveProps={{ className: 'inactive' }}
              >
                Index exact
              </Link>
              <Link
                to="/"
                search={{ foo: undefined }}
                inactiveProps={{ className: 'inactive' }}
                activeOptions={{ explicitUndefined: opts.explicitUndefined }}
              >
                Index foo=undefined
              </Link>
              <Link
                to="/"
                search={{ foo: undefined }}
                activeOptions={{
                  exact: true,
                  explicitUndefined: opts.explicitUndefined,
                }}
                inactiveProps={{ className: 'inactive' }}
              >
                Index foo=undefined-exact
              </Link>
              <Link
                to="/"
                search={{ foo: 'bar' }}
                inactiveProps={{
                  className: 'inactive',
                }}
              >
                Index foo=bar
              </Link>
            </>
          )
        },
      })

      const router = createRouter({
        routeTree: rootRoute.addChildren([indexRoute]),
        history,
      })

      render(<RouterProvider router={router} />)

      // round 1
      const indexExactLink = await screen.findByRole('link', {