30 lines
783 B
TypeScript
30 lines
783 B
TypeScript
jest.mock("../util/errors.ts", () => ({ catchErrors: jest.fn() }));
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import * as React from "react";
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import { mount } from "enzyme";
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import { ErrorBoundary } from "../error_boundary";
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import { catchErrors } from "../util";
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class Kaboom extends React.Component<{}, {}> {
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TRUE = (1 + 1) === 2;
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render() {
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if (this.TRUE) {
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throw new Error("ALWAYS");
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} else {
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return <div />;
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}
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}
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}
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describe("<ErrorBoundary/>", () => {
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it("handles exceptions", () => {
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const nodes = <ErrorBoundary><Kaboom /></ErrorBoundary>;
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const el = mount<ErrorBoundary>(nodes);
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expect(el.text()).toContain("can't render this part of the page");
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const i = el.instance();
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expect(i.state.hasError).toBe(true);
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expect(catchErrors).toHaveBeenCalled();
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});
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});
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