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factor out test helpers (#2093)

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David Luzar 2020-08-28 10:15:29 +02:00 • committed by GitHub
parent 4c2d34ffd7
commit 8b9e2a540d
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4 changed files with 613 additions and 503 deletions
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27
src/tests/test-utils.ts
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@ -19,14 +19,37 @@ type TestRenderFn = (
options?: Omit<RenderOptions, "queries">,
) => RenderResult<typeof customQueries>;
const renderApp: TestRenderFn = (ui, options) =>
render(ui, {
const renderApp: TestRenderFn = (ui, options) => {
const renderResult = render(ui, {
queries: customQueries,
...options,
});
GlobalTestState.renderResult = renderResult;
GlobalTestState.canvas = renderResult.container.querySelector("canvas")!;
return renderResult;
};
// re-export everything
export * from "@testing-library/react";
// override render method
export { renderApp as render };
/**
* For state-sharing across test helpers.
* NOTE: there shouldn't be concurrency issues as each test is running in its
* own process and thus gets its own instance of this module when running
* tests in parallel.
*/
export class GlobalTestState {
/**
* automatically updated on each call to render()
*/
static renderResult: RenderResult<typeof customQueries> = null!;
/**
* automatically updated on each call to render()
*/
static canvas: HTMLCanvasElement = null!;
}