03ab36149e
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat
57 lines
2.2 KiB
Markdown
57 lines
2.2 KiB
Markdown
# 1. Goal
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Calculate the overdue fine of a returned library item. The lending desk calls the
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calculation before it prints the receipt. The result gives the days overdue, the
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chargeable days, and the fine.
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# 2. Open questions
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None.
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# 3. Context
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- Package $TMP contains no object for this task.
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- The class is new. No other object is necessary.
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# 4. Contract
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- Create the class {{P}}OVERDUE_FINE in package $TMP.
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- The class is public and final. You can create it with NEW {{P}}OVERDUE_FINE( )
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without parameters.
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- The class has these public types:
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- TY_MEDIA: character field, length 8.
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- TY_AMOUNT: packed number, length 8, 2 decimal places.
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- TY_RESULT: structure with the components DAYS_OVERDUE (type i),
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CHARGEABLE_DAYS (type i), and FINE (type TY_AMOUNT).
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- The class has one public method:
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CALCULATE
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IMPORTING iv_due_date TYPE d
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iv_return_date TYPE d
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iv_media TYPE ty_media
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RETURNING VALUE(rs_result) TYPE ty_result.
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- Do not add other public methods or public components.
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# 5. Business rules
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Apply the rules in this sequence.
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1. If iv_return_date is earlier than or equal to iv_due_date, return
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DAYS_OVERDUE = 0, CHARGEABLE_DAYS = 0, and FINE = 0.00. Stop.
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2. DAYS_OVERDUE is the number of calendar days from iv_due_date to iv_return_date.
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3. The media code gives the daily rate and the grace days:
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- BOOK: daily rate 0.30, grace 7 days
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- DVD: daily rate 1.50, grace 2 days
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- GAME: daily rate 2.50, grace 0 days
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Compare the media code exactly. If the media code is not in this list, return
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CHARGEABLE_DAYS = 0 and FINE = 0.00. Keep DAYS_OVERDUE from rule 2. Stop.
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4. CHARGEABLE_DAYS is DAYS_OVERDUE minus the grace days. If this value is less
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than 0, CHARGEABLE_DAYS is 0.
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5. FINE is CHARGEABLE_DAYS multiplied by the daily rate.
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6. If DAYS_OVERDUE is greater than 30, add a reminder fee of 5.00 to FINE.
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7. If FINE is greater than 25.00, FINE is 25.00.
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# 6. Constraints
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- Release target: SAP_BASIS 816 (ABAP Platform 2025).
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- Coding standards: Clean ABAP. Method length below 40 statements. No global
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variables. No comment that restates the code.
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- Out of scope: no other object.
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# 7. Acceptance
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- The class is active and has no syntax error.
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- The hidden tests pass.
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- Write your own ABAP Unit tests for the class.
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