MCP ASCII Charts

import { createBarChart } from '../charts/bar-chart.js'; import { ChartData } from '../types/index.js'; describe('Bar Chart', () => { test('should create horizontal bar chart', () => { const data: ChartData = { data: [10, 20, 15, 25], labels: ['A', 'B', 'C', 'D'], title: 'Test Bar Chart', width: 50, height: 10, color: 'blue' }; const result = createBarChart(data, { orientation: 'horizontal' }); expect(result.chart).toBeDefined(); expect(result.title).toBe('Test Bar Chart'); expect(result.chart).toContain('█'); // Should contain bar blocks expect(result.chart).toContain('A'); // Should contain labels }); test('should create vertical bar chart', () => { const data: ChartData = { data: [5, 15, 10, 20], labels: ['Q1', 'Q2', 'Q3', 'Q4'], width: 40, height: 12 }; const result = createBarChart(data, { orientation: 'vertical' }); expect(result.chart).toBeDefined(); expect(result.chart).toContain('█'); // Should contain bar blocks expect(result.chart).toContain('Q1'); // Should contain labels }); test('should handle single bar', () => { const data: ChartData = { data: [42], labels: ['Single'], width: 30, height: 8 }; const result = createBarChart(data); expect(result.chart).toBeDefined(); expect(result.chart).toContain('Single'); }); test('should throw error for empty data', () => { const data: ChartData = { data: [], width: 30, height: 8 }; expect(() => createBarChart(data)).toThrow('Data array cannot be empty'); }); test('should handle negative values', () => { const data: ChartData = { data: [-10, 5, -5, 15], width: 40, height: 10 }; const result = createBarChart(data); expect(result.chart).toBeDefined(); }); test('should show values when requested', () => { const data: ChartData = { data: [10, 20, 30], width: 50, height: 8 }; const result = createBarChart(data, { showValues: true }); expect(result.chart).toContain('10.0'); expect(result.chart).toContain('20.0'); expect(result.chart).toContain('30.0'); }); });