DevSwarm

All runs / d9ca13d00b90

page_count drops the last partial page

Done

/home/devdi/devswarm/evals/tasks/off_by_one_pagination/repo · 2026-11-09 16:19:04 UTC · took 30.3s

  1. Plan (done)
  2. Code (done)
  3. Test (done)
  4. Review (done)
  5. Finish (done)
Cost
$0.0029
Tests
Passed
Iterations
1
Re-plans
0
LLM calls
11
Prompt read from cache
80%

Usage by agent

Cost per agent
planner: $0.0005 planner planner, Cost: $0.0005 $0.0005 coder: $0.0008 coder coder, Cost: $0.0008 $0.0008 tester: $0.0010 tester tester, Cost: $0.0010 $0.0010 reviewer: $0.0006 reviewer reviewer, Cost: $0.0006 $0.0006
Tokens per agent
  • Cache read
  • Cache write
  • Input
  • Output
planner: 7,033 planner planner, Cache read: 5,560 planner, Cache write: 692 planner, Output: 773 7,033 coder: 11.6K coder coder, Cache read: 8,630 coder, Cache write: 2,014 coder, Output: 995 11.6K tester: 13.3K tester tester, Cache read: 9,678 tester, Cache write: 2,450 tester, Output: 1,154 13.3K reviewer: 7,676 reviewer reviewer, Cache read: 4,950 reviewer, Cache write: 2,155 reviewer, Output: 565 7,676
View as table
AgentCostCache readCache writeInputOutput
planner$0.00055,5606928773
coder$0.00088,6302,0148995
tester$0.00109,6782,45081,154
reviewer$0.00064,9502,1556565

Timeline

  1. planner iteration 1 Finished 3 calls · 7,033 tokens · $0.0005 · 5.6s

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  2. coder iteration 1 Finished 3 calls · 11.6K tokens · $0.0008 · 8.2s

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  3. tester iteration 1 Finished 3 calls · 13.3K tokens · $0.0010 · 10.0s

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  4. verify iteration 1 Passed 0.5s 
    .......                                                                  [100%]
7 passed in 0.02s
  5. reviewer iteration 1 Finished 2 calls · 7,676 tokens · $0.0006 · 5.4s

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Final diff

diff --git a/pager.py b/pager.py
index 4ec10a5..95ae66e 100644
--- a/pager.py
+++ b/pager.py
@@ -1,5 +1,5 @@
 def page_count(total: int, size: int) -> int:
-    return total // size
+    return -(-total // size)
 
 
 def get_page(items: list, page: int, size: int) -> list:
diff --git a/test_pager.py b/test_pager.py
index 3c51988..ab69521 100644
--- a/test_pager.py
+++ b/test_pager.py
@@ -5,5 +5,27 @@ def test_even_division():
     assert page_count(10, 5) == 2
 
 
+def test_partial_last_page():
+    assert page_count(11, 5) == 3
+
+
+def test_no_items():
+    assert page_count(0, 5) == 0
+
+
+def test_single_partial_page():
+    assert page_count(1, 5) == 1
+
+
+def test_exactly_one_full_page():
+    assert page_count(5, 5) == 1
+
+
 def test_first_page():
     assert get_page([1, 2, 3, 4], 1, 2) == [1, 2]
+
+
+def test_partial_final_page_slice():
+    items = list(range(1, 12))
+    assert get_page(items, 3, 5) == [11]
+    assert get_page(items, 2, 5) == [6, 7, 8, 9, 10]