Code Challenge: Capital Gains

Context

"O objetivo deste exercício é implementar um programa de linha de comando (CLI) que calcula o imposto a ser pago 
sobre lucros ou prejuízos de operações no mercado financeiro de ações." - Code_Challenge__Ganho_de_Capital_ptbr.pdf

Dependencies

• JAVA (amazoncorretto) 21
• Spring Boot 3.4.1
• Maven 3.9.9
• Lombok 1.18.36
• Commons-lang3 3.17.0

Setup

Build project

 ./mvnw clean install

Run test

./mvnw test

Run application

By Maven with manual input

 ./mvnw spring-boot:run

By Maven with file input

 ./mvnw spring-boot:run < ./examples/input.txt

By .jar with manual input

 java -jar target/capital-gains-1.0.0.jar

By .jar with file input

 java -jar target/capital-gains-1.0.0.jar < ./examples/input.txt

By Docker (with docker compose) file input

# Load container via docker-compose and see output, or
 docker compose up
 
# Load container via docker-compose in backgroud mode...
 docker compose up -d
 
# and compare the output result saved in the file ./examples/output-result.txt (docker volume)
 diff -u ./examples/output.txt ./examples/output-result.txt

Tips: use docker compose down to remove container and network.

Input data example

[{"operation":"buy","unit-cost":10.00,"quantity":10000},{"operation":"sell","unit-cost":20.00,"quantity": 5000}]
[{"operation":"buy","unit-cost":20.00,"quantity":10000},{"operation":"sell","unit-cost":10.00,"quantity": 5000}]

Expected example output

[{"tax":0.00},{"tax":10000.00}]
[{"tax":0.00},{"tax":0.00}]

Tips: File with all data examples: ./examples/input.txt

Check the result with sample file

Run application with input from sample file

java -jar target/capital-gains-1.0.0.jar < ./examples/input.txt > ./examples/output-result.txt

Compare the output result saved in the file ./examples/output-result.txt

diff -u ./examples/output.txt ./examples/output-result.txt