snapshot of https://github.com/TanStack/query.git (main, 2026-09-16; blobs > 131072B omitted)

packages/svelte-query-devtools/tests/Devtools.svelte.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest'
+import { render } from '@testing-library/svelte'
+import { QueryClient } from '@tanstack/svelte-query'
+import SvelteQueryDevtools from '../src/Devtools.svelte'
+import Wrapper from './Wrapper.svelte'
+
+describe('SvelteQueryDevtools', () => {
+  it('should render the parent container without throwing in non-development environments', () => {
+    const queryClient = new QueryClient()
+
+    const { container } = render(SvelteQueryDevtools, {
+      props: { client: queryClient },
+    })
+
+    expect(
+      container.querySelector('.tsqd-parent-container'),
+    ).toBeInTheDocument()
+  })
+
+  it('should throw an error if no query client has been set', () => {
+    expect(() => render(SvelteQueryDevtools)).toThrow(
+      'No QueryClient was found in Svelte context. Did you forget to wrap your component with QueryClientProvider?',
+    )
+  })
+
+  it('should not throw an error if query client is provided via context', () => {
+    const queryClient = new QueryClient()
+
+    expect(() => render(Wrapper, { props: { queryClient } })).not.toThrow()
+  })
+
+  it('should not throw an error if query client is provided via props', () => {
+    const queryClient = new QueryClient()
+
+    expect(() =>
+      render(SvelteQueryDevtools, { props: { client: queryClient } }),
+    ).not.toThrow()
+  })
+})