/**
 * Component tests for PRMergeTimeChart.
 * Validates rendering with PR merge time data.
 */
import { describe, it, expect } from 'vitest';
import { mount } from '@vue/test-utils';
import PRMergeTimeChart from '@/components/charts/PRMergeTimeChart.vue';

const mockWeeks = [
  { weekStart: '2026-03-02', avgHours: 18.5, prCount: 6 },
  { weekStart: '2026-03-09', avgHours: 24.2, prCount: 8 },
  { weekStart: '2026-03-16', avgHours: 52.1, prCount: 4 },
  { weekStart: '2026-03-23', avgHours: 36.8, prCount: 10 },
];

describe('PRMergeTimeChart', () => {
  it('should mount with weeks data', () => {
    const wrapper = mount(PRMergeTimeChart, {
      props: { weeks: mockWeeks },
    });
    expect(wrapper.exists()).toBe(true);
  });

  it('should have chart container', () => {
    const wrapper = mount(PRMergeTimeChart, {
      props: { weeks: mockWeeks },
    });
    expect(wrapper.find('.pr-merge-time-chart').exists()).toBe(true);
  });

  it('should handle custom warning threshold', () => {
    const wrapper = mount(PRMergeTimeChart, {
      props: { weeks: mockWeeks, warningThreshold: 24 },
    });
    expect(wrapper.exists()).toBe(true);
  });

  it('should handle empty weeks', () => {
    const wrapper = mount(PRMergeTimeChart, {
      props: { weeks: [] },
    });
    expect(wrapper.exists()).toBe(true);
  });
});