abap-llm/tasks_gen/eval/G0157/spec.md

# 1. Goal
A beverage wholesaler takes back empty containers from its customers. The returns
program calls one function module for each return line. The function module
calculates the deposit that the wholesaler pays back to the customer.

# 2. Open questions
None.

# 3. Context
- Function group {{P}}FG_DEPOSIT exists in package $TMP.
- Function module {{P}}DEP_SAMPLE exists in this group. It is the sample deposit
  module. The returns program calls all deposit modules with the interface of
  {{P}}DEP_SAMPLE.

# 4. Contract
- Create the function module {{P}}DEP_CALC in function group {{P}}FG_DEPOSIT.
- Use exactly the interface of {{P}}DEP_SAMPLE:
  - IMPORTING iv_code TYPE c
  - IMPORTING iv_quantity TYPE i
  - IMPORTING iv_damaged TYPE abap_bool
  - EXPORTING ev_deposit TYPE decfloat34
  - EXCEPTIONS invalid_quantity, invalid_container

# 5. Business rules
1. If the quantity is less than 1, raise the exception INVALID_QUANTITY.
2. The container code gives the deposit of one container:
   - 'A': crate with 12 glass bottles, 1.50
   - 'B': crate with 20 PET bottles, 3.00
   - 'G': single glass bottle, 0.08
   - 'P': single PET bottle, 0.25
3. Any other container code raises the exception INVALID_CONTAINER.
4. If the container is damaged, the deposit of one container is half of the value
   in rule 2, rounded half up to 2 decimals.
5. The deposit of the return line is the deposit of one container multiplied by
   the quantity, rounded half up to 2 decimals.

# 6. Constraints
- Release target: 7.40 SP05. Use only language elements that this release supports.
- Coding standards: Clean ABAP.
- Out of scope: do not change {{P}}DEP_SAMPLE.

# 7. Acceptance
- The function module {{P}}DEP_CALC is active and has no syntax error.
- The hidden tests pass.
- Write ABAP Unit tests for the function module in a global test class.