cactus183/patchbench-dev

1{2  "task_id": "hard_01",3  "difficulty": "hard",4  "description": "Fix the DateRange class which has two interacting bugs. The contains() method excludes boundary dates and the overlaps() method fails to detect ranges that share exactly one date. Both must be fixed together for all tests to pass.",5  "max_steps": 12,6  "baseline_passing_tests": ["test_contains_middle", "test_contains_outside", "test_overlaps_true", "test_overlaps_false", "test_duration_same_day", "test_duration_week"],7  "baseline_failing_tests": ["test_contains_start", "test_contains_end", "test_overlaps_touching"],8  "bug_category": "state_management",9  "skills_tested": ["invariant_reasoning", "interval_semantics", "regression_avoidance"]10}11