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report.test.ts
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report.test.ts
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import process from 'process';
import handlebars from 'handlebars';
import { promises as fs } from 'fs';
import { Logger } from './logger';
import { generateReport } from './report';
describe('report.ts', () => {
const logger = new Logger();
const htmlTemplate = '<h1>Hello World<h1>';
const readdirMock = jest.spyOn(fs, 'readdir');
const mkdirMock = jest.spyOn(fs, 'mkdir');
const readFileMock = jest.spyOn(fs, 'readFile');
const writeFileMock = jest.spyOn(fs, 'writeFile');
const handlebarsCompileMock = jest
.spyOn(handlebars, 'compile')
.mockImplementationOnce(() => () => '<h1>Hello World Compiled</h1>');
const cwdMock = jest
.spyOn(process, 'cwd')
.mockReturnValue('/Users/johndoe/Projects/my-project');
beforeAll(() => {
readdirMock.mockReset();
mkdirMock.mockReset();
readFileMock.mockReset();
writeFileMock.mockReset();
});
afterAll(() => {
cwdMock.mockRestore();
});
it('should get the screenshots and create the html report', async () => {
readFileMock.mockResolvedValueOnce(htmlTemplate);
mkdirMock.mockResolvedValueOnce(undefined);
await generateReport(logger, 'ios');
expect(readdirMock).toHaveBeenCalledWith(
'/Users/johndoe/Projects/my-project/.owl/diff/ios'
);
expect(handlebarsCompileMock).toHaveBeenCalledTimes(1);
expect(writeFileMock).toHaveBeenCalledWith(
'/Users/johndoe/Projects/my-project/.owl/report/index.html',
'<h1>Hello World Compiled</h1>'
);
});
});