import 'mocha';
import { expect } from 'chai';
import { OperatingSystem } from '@/domain/OperatingSystem';
import { BrowserOsDetector } from '@/application/Environment/BrowserOs/BrowserOsDetector';
import { BrowserOsTestCases } from './BrowserOsTestCases';

describe('BrowserOsDetector', () => {
  it('returns undefined when user agent is undefined', () => {
    // arrange
    const expected = undefined;
    const sut = new BrowserOsDetector();
    // act
    const actual = sut.detect(undefined);
    // assert
    expect(actual).to.equal(expected);
  });
  it('detects as expected', () => {
    BrowserOsTestCases.forEach((testCase) => {
      // arrange
      const sut = new BrowserOsDetector();
      // act
      const actual = sut.detect(testCase.userAgent);
      // assert
      expect(actual).to.equal(testCase.expectedOs, printMessage());
      function printMessage(): string {
        return `Expected: "${OperatingSystem[testCase.expectedOs]}"\n`
          + `Actual: "${OperatingSystem[actual]}"\n`
          + `UserAgent: "${testCase.userAgent}"`;
      }
    });
  });
});