kotlin-exercise

An exercise in learning Kotlin and practicing Test Driven Development.

Testing

Test Cases can be found in src/test/kotlin/test.kt. Run the RunAllTests class to test cases for each step, or run each class individually.

mvn test will run RunAllTests.

Requirements

Step 1: Build an Orders Service

Test class: OrderServiceTest

• Build a service that’s able to receive simple orders of shopping goods from the command line
• Apples cost 60 cents and oranges cost 25 cents
• The service should be able to calculate that: [ Apple, Apple, Orange, Apple ] => $2.05
• Make reasonable assumptions about the inputs to your solution; for example, candidates may take a list of strings as input
• Add unit tests that validate your code

Step 2: Simple offer

Test class: SimpleOffersTest

• The shop decides to introduce two new offers
• Buy one get one free on Apples
• 3 for the price of 2 on Oranges
• Update your functions & unit tests accordingly

Step 3: Build a Customer Notification Service

Test class: NotificationTest

• Customers complained that they don’t know if their orders made it through or not as there is no notification of success
• Build a service that listens for when orders are complete and sends a notification to the customer regarding its status and estimated delivery time
• The Mail service subscribes to events from the Orders service and publishes an appropriate event that the customer (you) is able to read from the terminal

Step 4: Limited Stock

Test class: StockTest

• Stock can now run out, this means that customers need to be notified that their order failed