54 lines
1.2 KiB
JavaScript
54 lines
1.2 KiB
JavaScript
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/* eslint-env jest */
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import parseDOM from "./parse-dom";
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describe("parseDOM", () => {
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let realDOMParser, result;
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beforeEach(() => {
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realDOMParser = global.DOMParser;
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});
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afterEach(() => {
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global.DOMParser = realDOMParser;
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});
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describe("DOMParser available", () => {
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let parseFromString;
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beforeEach(() => {
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parseFromString = jest.fn().mockReturnValue("%document%");
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global.DOMParser = jest.fn(() => ({ parseFromString }));
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result = parseDOM('<div id="test"></div>');
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});
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it("creates a new DOMParser", () => {
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expect(global.DOMParser).toHaveBeenCalled();
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});
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it("calls parseFromString with the passed-in string", () => {
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expect(parseFromString).toHaveBeenCalledWith(
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'<div id="test"></div>',
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"text/html"
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);
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});
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it("returns the value returned by parseFromString", () => {
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expect(result).toBe("%document%");
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});
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});
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describe("No DOMParser available", () => {
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beforeEach(() => {
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global.DOMParser = undefined;
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result = parseDOM('<div id="test"></div>');
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});
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it("retuns null", () => {
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expect(result).toBeNull();
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});
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});
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});
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