Stage 2 summary at 50 accepted trajectories

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/G1113/spec.md

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+# 1. Goal
+A blood donation centre summarises the donations of one collection day. The
+centre calls one function module for each collection day. The function module
+groups the donations by donor and blood group and gives the total units of each
+group.
+
+# 2. Open questions
+None.
+
+# 3. Context
+- Function group {{P}}FG_DON exists in package $TMP.
+- The collection team records the donations of one day on a handheld device.
+  The device sends the donations of the day as one text.
+- Each donation is one line of the text. A line has three fields that are
+  separated by a semicolon (;):
+  - field 1: the donor id, without blanks
+  - field 2: the blood group code, without blanks
+  - field 3: the units, a decimal number without leading zeros
+- The lines of the text are separated by the newline character
+  (cl_abap_char_utilities=>newline). The text does not end with a newline.
+- Function module {{P}}DON_SAMPLE exists in the group. It shows how the text of
+  one day is split into lines.
+
+# 4. Contract
+- Create the function module {{P}}DON_SUM in function group {{P}}FG_DON.
+- Use this interface:
+  - IMPORTING iv_donations TYPE string
+  - EXPORTING ev_donor_count TYPE i
+  - CHANGING cv_totals TYPE string
+  - EXCEPTIONS invalid_units
+
+# 5. Business rules
+1. A donation is not valid if its units are less than 1. If the text contains a
+   donation that is not valid, raise the exception INVALID_UNITS. In this case,
+   do not change cv_totals.
+2. Group the donations by donor id and blood group code. The total units of a
+   group is the sum of the units of all donations of the group.
+3. Compare blood group codes without regard to case. Write the blood group code
+   in the result in upper case.
+4. cv_totals has exactly one line for each group. Replace the content of
+   cv_totals. Do not append to the old content.
+5. A line of cv_totals has the same layout as a line of the input text: donor
+   id, semicolon, blood group code, semicolon, total units. The total units have
+   no leading zeros. The lines are sorted by donor id in ascending order and
+   then by blood group code in ascending order. The lines are separated by the
+   newline character. The text does not end with a newline.
+6. ev_donor_count is the number of different donor id values in the text.
+7. If the text is empty, cv_totals is empty and ev_donor_count is 0.
+
+# 6. Constraints
+- Release target: 8.16.
+- Coding standard: Clean ABAP. Methods have less than 40 statements.
+- Out of scope: do not change {{P}}DON_SAMPLE.
+
+# 7. Acceptance
+- The function module is active and has no syntax error.
+- The hidden tests pass.
+- Write ABAP Unit tests for the function module in a global test class.