patch-pulse/lib/ui/__tests__/progress.test.js

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import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { ProgressSpinner } from '../progress.js';
describe('ProgressSpinner', () => {
    let progressSpinner;
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    let mockStdout;
    beforeEach(() => {
        progressSpinner = new ProgressSpinner();
        mockStdout = vi.fn();
        vi.spyOn(process.stdout, 'write').mockImplementation(mockStdout);
        vi.useFakeTimers();
    });
    afterEach(() => {
        vi.restoreAllMocks();
        vi.useRealTimers();
    });
    describe('start', () => {
        it('should start the spinner with the given message', () => {
            progressSpinner.start('Loading...');
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠋ Loading...'));
        });
        it('should cycle through spinner characters', () => {
            progressSpinner.start('Processing...');
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠋ Processing...'));
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠙ Processing...'));
        });
        it('should loop back to the first spinner character', () => {
            progressSpinner.start('Working...');
            vi.advanceTimersByTime(80 * 10);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠋ Working...'));
        });
    });
    describe('updateMessage', () => {
        it('should update the displayed message', () => {
            progressSpinner.start('Initial message');
            progressSpinner.updateMessage('Updated message');
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠋ Updated message'));
        });
    });
    describe('stop', () => {
        it('should clear the spinner and stop the interval', () => {
            progressSpinner.start('Loading...');
            progressSpinner.stop();
            expect(mockStdout).toHaveBeenCalledWith('\r' + ' '.repeat(50) + '\r');
            vi.advanceTimersByTime(80);
            expect(mockStdout).not.toHaveBeenCalledWith(expect.stringContaining('⠙ Loading...'));
        });
        it('should handle multiple stop calls gracefully', () => {
            progressSpinner.start('Loading...');
            progressSpinner.stop();
            progressSpinner.stop();
            expect(mockStdout).toHaveBeenCalledWith('\r' + ' '.repeat(50) + '\r');
        });
    });
    describe('integration', () => {
        it('should work with a complete start-update-stop cycle', () => {
            progressSpinner.start('Starting...');
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠋ Starting...'));
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠙ Starting...'));
            progressSpinner.updateMessage('Processing...');
            vi.advanceTimersByTime(80);
            expect(mockStdout).toHaveBeenCalledWith(expect.stringContaining('⠹ Processing...'));
            progressSpinner.stop();
            expect(mockStdout).toHaveBeenCalledWith('\r' + ' '.repeat(50) + '\r');
        });
    });
});
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