import { describe, expect, it } from 'vitest';
import { searchRank } from '../../src/ui/search';

describe('searchRank', () => {
  const fields = ['Set variable', 'setvariable', 'Writes a value into a variable'];

  it('ranks everything alike when nothing was typed', () => {
    expect(searchRank('', fields)).toBe(0);
    expect(searchRank('', ['anything at all'])).toBe(0);
  });

  it('answers -1 when no field contains the query', () => {
    expect(searchRank('collider', fields)).toBe(-1);
  });

  it('puts an exact hit first, whichever field it came from', () => {
    expect(searchRank('set variable', fields)).toBe(0);
    expect(searchRank('setvariable', fields)).toBe(0);
  });

  it('prefers a prefix over a substring, and the label over the type', () => {
    const prefix = searchRank('set', fields);
    const substring = searchRank('variable', fields);
    expect(prefix).toBeGreaterThan(0);
    expect(prefix).toBeLessThan(substring);
  });

  it('ranks a description-only hit behind every hit on the label', () => {
    const description = searchRank('writes', fields);
    expect(description).toBeGreaterThan(searchRank('variable', fields));
  });

  it('takes the best field, not the first that matches', () => {
    // "value" sits in the description only, "Set" in the label -- a query in both takes the label.
    expect(searchRank('set', ['Set value', 'setvalue', 'Set a value'])).toBe(1);
  });
});