Test project

This is simple technical task on code coverage, team work and work with code at all.

Conditions:

1. You've joined the team which consists of:
   • Technical Lead(TL)
   • Business analyst(BA)
   • QA Engineer(QA)
   • Senior Developer(SD)
2. You've got a task: please increase code coverage for the current project(add unit tests).
3. You can address any questions to any person in the team(interviewer should cover it).
4. There are no possibilities to change existing code.

Expected question(but not required!):

• What is the purpose of using strictfp key word in the class or in the method(TL or SD);
• What will be usage of current code in business area: precision for unit tests(BA for business area and TL for current value);
• Do we have any code convention on the project? What is current convention for tests?(QA, SD, TL)
• What are maximum and minimum values for calculation operations(according to the spec)? What should happen if result of the operation or operands will exceed this value?(BA)
• Which corner cases are necessary to be covered for math operation implementation? e.g. division by 0(QA or SD)
• Which corner cases are necessary to be covered for MathOperationExecutor?(QA or SD)

Result can be retrieved by the running mvn install command

Extended features:

• correct logic of mathematical operation can be changed to incorrect(e.g. in Subtraction or Division class leftOperand and rightOperand can be swapped)