dsibinski

1. Force System Language via PowerShell

Run PowerShell as Administrator and execute:

# Set system display language to Polish
Set-WinSystemLocale pl-PL
Set-WinUILanguageOverride pl-PL
Set-WinUserLanguageList pl-PL -Force
Set-Culture pl-PL
Set-WinHomeLocation -GeoId 191  # 191 = Poland

dsibinski

  test("should apply 10% discount if there are exactly 5 business class tickets", () => {
    const tickets = Array.from({ length: 5 }, () => ({
      price: 10,
      isBusinessClass: true,
    }));

    const totalPrice = calculator.calculateTotalTicketsPrice(tickets);
    expect(totalPrice).toBe(45); // 10% discount
  });

dsibinski

import { Ticket } from "./ticket";
import { TicketsPriceCalculator } from "./ticketsPriceCalculator";

describe("TicketsPriceCalculator", () => {
  let calculator: TicketsPriceCalculator;

  beforeEach(() => {
    calculator = new TicketsPriceCalculator();
  });

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export class TicketsPriceCalculator {
  calculateTotalTicketsPrice(tickets: Ticket[]): number {
    if (tickets.length === 0) {
      return 0;
    }

    let totalPrice = tickets.reduce((sum, ticket) => sum + ticket.price, 0);
    const businessClassTickets = tickets.filter(
      (ticket) => ticket.isBusinessClass
    ).length;

dsibinski

getAllUsers = async (): Promise<UserViewModel[]> => {
  const url = `${this.apiEndpoint}/AllUsers`;
  const response = await fetch(url);
  const usersJson = await response.json();
  const users = z.array(UserViewModelSchema).parse(usersJson);
  return users;
};

dsibinski

import { z } from "zod";
import { AddressViewModelSchema } from "./addressViewModel";

export const UserViewModelSchema = z.object({
  id: z.string().uuid(),
  name: z.string(),
  lastName: z.string(),
  login: z.string(),
  isActive: z.boolean(),
  loyaltyPoints: z.number(),

dsibinski

export const UserViewModelSchema = z.object({
  id: z.string().uuid(),
  name: z.string(),
  lastName: z.string(),
  login: z.string(),
  isActive: z.boolean(),
  loyaltyPoints: z.number(),
  address: AddressViewModelSchema.nullable(),
});

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public record UserViewModel(Guid Id, string Name, string LastName, 
    string Login, bool IsActive, int FidelityPoints, AddressViewModel? Address = null);

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export class UsersService {
  private apiEndpoint: string;

  constructor() {
    this.apiEndpoint = "https://localhost:7131/Users";
  }

  getAllUsers = async (): Promise<UserViewModel[]> => {
    const url = `${this.apiEndpoint}/AllUsers`;
    const response = await fetch(url);

dsibinski

export interface UserViewModel {
  id: Guid;
  name: string;
  lastName: string;
  login: string;
  isActive: boolean;
  loyaltyPoints: number;
  address: AddressViewModel | null;
}