Parking Lot Exercise

Prerequisite

Install Node JS 18 LTS & install yarn globally. Run yarn install for the first time before running any commands.

Simple Flow Diagram

Unit test with coverage

yarn test

Run Scenarios

Example 1: Small motorcycle/scooter parking lot

Scenario is written in scenarios/mallSmallParkingLot.test.ts

Run below commmand to see the result

yarn test:mallSmallParkingLot

Example 2: Mall parking lot

Scenario is written in scenarios/mallParkingLot.test.ts

Run below commmand to see the result

yarn test:mallParkingLot

Example 3: Stadium Parking Lot

Scenario is written in scenarios/stadiumParkingLot.test.ts

Run below commmand to see the result

yarn test:stadiumParkingLot

Example 4: Airport Parking Lot

Scenario is written in scenarios/airportParkingLot.test.ts

Run below commmand to see the result

yarn test:airportParkingLot

Assumptions

1. Concurrency handling (Optimistic Locking or Pessimistic Locking) is not in scope.
2. Small vehicle can only take small spot, medium and large vehicle can only take spot in their size as well, it is feasible to make the change on spotAllocationService though
3. Database Transaction is not in scope
4. Repository layer normally should be tested in Component Test as it requires working with local database. Here it is covered by Unit Test as no database is invloved.
5. Ticket number and auto increment are handled in repository/database layer