Harness: runner, generator, tasks T01 T13 T14 T15, CLAUDE.md

tasks_gen/eval/G0002/spec.md

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+# 1. Goal
+Calculate delivery dates for sales orders. A delivery date must be a working day.
+Weekends and plant holidays are not working days. A planner uses the class before
+the system confirms a delivery date.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- The class {{P}}DELIVERY_SCHEDULE does not exist. Create it in package $TMP.
+- The caller gives the plant holidays as a table of dates. The class does not read
+  a factory calendar. The class does not read the system date.
+
+# 4. Contract
+- Create the class {{P}}DELIVERY_SCHEDULE in package $TMP.
+- The class is public, final, and has a public constructor without parameters.
+- The class has the public type TY_HOLIDAYS. TY_HOLIDAYS is a standard table of
+  dates (TYPE d) with an empty key.
+- The class has the public methods below. Do not add other public methods.
+
+```abap
+METHODS is_working_day
+  IMPORTING iv_date           TYPE d
+            it_holidays       TYPE ty_holidays
+  RETURNING VALUE(rv_working) TYPE abap_bool.
+
+METHODS next_working_day
+  IMPORTING iv_date        TYPE d
+            it_holidays    TYPE ty_holidays
+  RETURNING VALUE(rv_date) TYPE d.
+
+METHODS add_working_days
+  IMPORTING iv_start       TYPE d
+            iv_days        TYPE i
+            it_holidays    TYPE ty_holidays
+  RETURNING VALUE(rv_date) TYPE d.
+
+METHODS count_working_days
+  IMPORTING iv_from         TYPE d
+            iv_to           TYPE d
+            it_holidays     TYPE ty_holidays
+  RETURNING VALUE(rv_count) TYPE i.
+```
+
+# 5. Business rules
+1. The days of the week are Monday, Tuesday, Wednesday, Thursday, Friday, Saturday,
+   Sunday.
+2. A date is a working day when these two conditions are true:
+   - The date is not a Saturday and not a Sunday.
+   - The date is not in it_holidays.
+3. IS_WORKING_DAY returns abap_true for a working day. It returns abap_false for
+   all other days.
+4. NEXT_WORKING_DAY returns the first working day that is on iv_date or after
+   iv_date.
+5. ADD_WORKING_DAYS counts working days.
+   - If iv_days is 0, the result is iv_start.
+   - If iv_days is greater than 0, the result is the date that is iv_days working
+     days after iv_start. Count only working days. Ignore all other days.
+   - If iv_days is less than 0, the result is the date that is the absolute value
+     of iv_days working days before iv_start. Count only working days. Ignore all
+     other days.
+   - Example: iv_start is a Friday and iv_days is 1. The result is the next Monday.
+   - Example: iv_start is a Monday and iv_days is -1. The result is the Friday
+     before.
+6. COUNT_WORKING_DAYS counts the working days in the interval from iv_from to
+   iv_to. The interval contains iv_from and iv_to.
+   - If iv_from is after iv_to, the result is 0.
+   - If iv_from is equal to iv_to, the result is 1 for a working day and 0 for all
+     other days.
+7. it_holidays can be empty. it_holidays can contain dates that are outside the
+   interval. it_holidays can contain the same date more than one time. A date that
+   occurs more than one time in it_holidays is a holiday.
+
+# 6. Constraints
+- Release target: 8.16.
+- Coding standards: Clean ABAP. A method has less than 40 statements. No global
+  variables. No comment that restates the code.
+- Out of scope: do not read a factory calendar. Do not read the system date. Do
+  not create other objects.
+
+# 7. Acceptance
+- The class is active and has no syntax error.
+- The hidden tests pass.
+- Write your own ABAP Unit tests for the class.