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tests(topbar): replace module mock with dependency injection #14057

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merged 3 commits into from
May 31, 2022
Merged

tests(topbar): replace module mock with dependency injection #14057

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03f5171
tests(topbar): remove testdouble
adamraine May 26, 2022
7f135f9
afterEach
adamraine May 26, 2022
76abee0
Merge branch 'master' into topbar-rm-mock
adamraine May 31, 2022
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12 changes: 10 additions & 2 deletions flow-report/src/topbar.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -17,9 +17,12 @@ import {saveFile} from '../../report/renderer/api';
function saveHtml(flowResult: LH.FlowResult, htmlStr: string) {
const blob = new Blob([htmlStr], {type: 'text/html'});
const filename = getFlowResultFilenamePrefix(flowResult) + '.html';
saveFile(blob, filename);
saveHtml.saveFile(blob, filename);
}

// Store `saveFile` here so we can do dependency injection.
saveHtml.saveFile = saveFile;

/* eslint-disable max-len */
const Logo: FunctionComponent = () => {
return (
Expand Down Expand Up @@ -68,7 +71,7 @@ const TopbarButton: FunctionComponent<{
);
};

export const Topbar: FunctionComponent<{onMenuClick: JSX.MouseEventHandler<HTMLButtonElement>}> =
const Topbar: FunctionComponent<{onMenuClick: JSX.MouseEventHandler<HTMLButtonElement>}> =
({onMenuClick}) => {
const flowResult = useFlowResult();
const strings = useLocalizedStrings();
Expand Down Expand Up @@ -118,3 +121,8 @@ export const Topbar: FunctionComponent<{onMenuClick: JSX.MouseEventHandler<HTMLB
</div>
);
};

export {
Topbar,
saveHtml,
};
15 changes: 7 additions & 8 deletions flow-report/test/topbar-test.tsx
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Expand Up @@ -10,16 +10,10 @@ import {act, render} from '@testing-library/preact';

import {FlowResultContext, OptionsContext} from '../src/util';
import {I18nProvider} from '../src/i18n/i18n';
import {Topbar, saveHtml} from '../src/topbar';

const mockSaveFile = jest.fn();
jest.unstable_mockModule('../../../report/renderer/api.js', () => ({
saveFile: mockSaveFile,
}));

let Topbar: typeof import('../src/topbar').Topbar;
beforeAll(async () => {
Topbar = (await import('../src/topbar')).Topbar;
});
const defaultSaveFile = saveHtml.saveFile;

const flowResult = {
name: 'User flow',
Expand Down Expand Up @@ -47,7 +41,12 @@ beforeEach(() => {
);
});

afterEach(() => {
saveHtml.saveFile = defaultSaveFile;
});

it('save button opens save dialog for HTML file', async () => {
saveHtml.saveFile = mockSaveFile;
options = {getReportHtml: () => '<html></html>'};
const root = render(<Topbar onMenuClick={() => {}}/>, {wrapper});

Expand Down