writeOutputFile.spec.ts

/*
 *  This Source Code Form is subject to the terms of the Mozilla Public
 *  License, v. 2.0. If a copy of the MPL was not distributed with this
 *  file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */
import fs from 'node:fs';
import { writeOutputFile } from '../../helpers/writeOutputFile';

describe('writeOutputFile()', () => {
	describe('when output directory does not exists', () => {
		let existsSyncSpy: jest.SpyInstance;
		let mkdirSyncSpy: jest.SpyInstance;

		beforeEach(() => {
			existsSyncSpy = jest.spyOn(fs, 'existsSync').mockReturnValue(false);

			mkdirSyncSpy = jest.spyOn(fs, 'mkdirSync');
		});

		afterEach(() => {
			jest.resetAllMocks();
			jest.restoreAllMocks();
		});

		it('must create it', () => {
			writeOutputFile({}, 'angularClient', 'output', 'custom.service', 'custom');
			expect(existsSyncSpy).toHaveBeenCalled();
			expect(mkdirSyncSpy).toHaveBeenCalled();
		});
	});

	describe('when directory exists', () => {
		let existsSyncSpy: jest.SpyInstance;
		let mkdirSyncSpy: jest.SpyInstance;

		beforeEach(() => {
			existsSyncSpy = jest.spyOn(fs, 'existsSync').mockReturnValue(true);

			mkdirSyncSpy = jest.spyOn(fs, 'mkdirSync');
		});

		afterEach(() => {
			jest.resetAllMocks();
			jest.restoreAllMocks();
		});

		it('must not create it', () => {
			writeOutputFile({}, 'angularClient', 'output', 'custom.service', 'custom');
			expect(existsSyncSpy).toHaveBeenCalled();
			expect(mkdirSyncSpy).not.toHaveBeenCalled();
		});
	});

	describe('must read template', () => {
		let readFileSyncSpy: jest.SpyInstance;

		beforeEach(() => {
			readFileSyncSpy = jest.spyOn(fs, 'readFileSync');
		});

		it('for angularClient', () => {
			writeOutputFile({}, 'angularClient', 'outputTest', 'custom.service', 'CustomTagname');
			expect(readFileSyncSpy).toHaveBeenCalledWith(process.cwd() + '/src/templates/angularClient.hbs', 'utf-8');
		});

		it('for client', () => {
			writeOutputFile({}, 'client', 'outputTest', 'custom', 'CustomTagname');
			expect(readFileSyncSpy).toHaveBeenCalledWith(process.cwd() + '/src/templates/client.hbs', 'utf-8');
		});

		it('for server', () => {
			writeOutputFile({}, 'server', 'outputTest', 'custom', 'CustomTagname');
			expect(readFileSyncSpy).toHaveBeenCalledWith(process.cwd() + '/src/templates/server.hbs', 'utf-8');
		});
		it('for interfaces', () => {
			writeOutputFile({}, 'interfaces', 'outputTest', 'custom', 'CustomTagname');
			expect(readFileSyncSpy).toHaveBeenCalledWith(process.cwd() + '/src/templates/interfaces.hbs', 'utf-8');
		});
	});

	describe('writting output files', () => {
		let writeFileSyncSpy: jest.SpyInstance;

		beforeEach(() => {
			writeFileSyncSpy = jest.spyOn(fs, 'writeFileSync');
		});

		describe('using default params', () => {
			it('must write file', () => {
				writeOutputFile({}, 'angularClient');
				expect(writeFileSyncSpy).toHaveBeenCalledWith(
					process.cwd() + '/output/index.ts',
					expect.stringMatching(/.*CustomService.*/),
					'utf-8'
				);
			});
		});

		describe('passing params', () => {
			it('must write file', () => {
				writeOutputFile({}, 'angularClient', 'outputTest', 'my-custom.service', 'my-custom');
				expect(writeFileSyncSpy).toHaveBeenCalledWith(
					process.cwd() + '/outputTest/my-custom.service.ts',
					expect.stringMatching(/.*MyCustomService.*/),
					'utf-8'
				);
			});
		});
	});
});