/**
 * Copyright (c) 2020 The xterm.js authors. All rights reserved.
 * @license MIT
 */

import { assert } from 'chai';
import { OptionsService, DEFAULT_OPTIONS } from 'common/services/OptionsService';

describe('OptionsService', () => {
  describe('constructor', () => {
    const originalError = console.error;
    beforeEach(() => {
      console.error = () => { };
    });
    afterEach(() => {
      console.error = originalError;
    });
    it('uses default value if invalid constructor option values passed for cols/rows', () => {
      const optionsService = new OptionsService({ cols: undefined, rows: undefined });
      assert.equal(optionsService.getOption('rows'), DEFAULT_OPTIONS.rows);
      assert.equal(optionsService.getOption('cols'), DEFAULT_OPTIONS.cols);
    });
    it('uses values from constructor option values if correctly passed', () => {
      const optionsService = new OptionsService({ cols: 80, rows: 25 });
      assert.equal(optionsService.getOption('rows'), 25);
      assert.equal(optionsService.getOption('cols'), 80);
    });
    it('uses default value if invalid constructor option value passed', () => {
      assert.equal(new OptionsService({ tabStopWidth: 0 }).getOption('tabStopWidth'), DEFAULT_OPTIONS.tabStopWidth);
    });
    it('object.keys return the correct number of options', () => {
      const optionsService = new OptionsService({ cols: 80, rows: 25 });
      assert.notEqual(Object.keys(optionsService.options).length, 0);
    });
  });
  describe('setOption', () => {
    let service: OptionsService;
    beforeEach(() => {
      service = new OptionsService({});
    });
    it('applies valid fontWeight option values', () => {
      service.setOption('fontWeight', 'bold');
      assert.equal(service.getOption('fontWeight'), 'bold', '"bold" keyword value should be applied');

      service.setOption('fontWeight', 'normal');
      assert.equal(service.getOption('fontWeight'), 'normal', '"normal" keyword value should be applied');

      service.setOption('fontWeight', '600');
      assert.equal(service.getOption('fontWeight'), '600', 'String numeric values should be applied');

      service.setOption('fontWeight', 350);
      assert.equal(service.getOption('fontWeight'), 350, 'Values between 1 and 1000 should be applied as is');

      service.setOption('fontWeight', 1);
      assert.equal(service.getOption('fontWeight'), 1, 'Range should include minimum value: 1');

      service.setOption('fontWeight', 1000);
      assert.equal(service.getOption('fontWeight'), 1000, 'Range should include maximum value: 1000');
    });
    it('normalizes invalid fontWeight option values', () => {
      service.setOption('fontWeight', 350);
      assert.doesNotThrow(() => service.setOption('fontWeight', 10000), 'fontWeight should be normalized instead of throwing');
      assert.equal(service.getOption('fontWeight'), DEFAULT_OPTIONS.fontWeight, 'Values greater than 1000 should be reset to default');

      service.setOption('fontWeight', 350);
      service.setOption('fontWeight', -10);
      assert.equal(service.getOption('fontWeight'), DEFAULT_OPTIONS.fontWeight, 'Values less than 1 should be reset to default');

      service.setOption('fontWeight', 350);
      service.setOption('fontWeight', 'bold700');
      assert.equal(service.getOption('fontWeight'), DEFAULT_OPTIONS.fontWeight, 'Wrong string literals should be reset to default');
    });
  });
});