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08eb78a5b2
This PR sets up the new integrated test/bench suite. It then migrates all benchmarks and some related tests to the new suite. There's also some documentation and some linting. For now, a lot of the old tests are left alone so this PR doesn't become even larger than it already is. Eventually, all tests should be migrated to the new suite though so there isn't a confusing mix of two systems.
26 lines
843 B
Lean4
26 lines
843 B
Lean4
-- Extracted from Mathlib.Data.UnionFind.
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-- This file was failing in Mathlib during development of #3124.
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section Mathlib.Data.UnionFind
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structure UFNode (α : Type _) where
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parent : Nat
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value : α
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rank : Nat
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structure UnionFind (α) where
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arr : Array (UFNode α)
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-- The `PANIC` can be avoided by turning `simprocs` off:
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-- set_option simprocs false
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def rankMaxAux (self : UnionFind α) : ∀ (i : Nat),
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{k : Nat // ∀ j, j < i → ∀ h, self.arr[j].rank ≤ k}
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| 0 => ⟨0, fun j hj => nomatch hj⟩
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| i+1 => by
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let ⟨k, H⟩ := rankMaxAux self i
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refine ⟨max k (if h : _ then self.arr[i].rank else 0), fun j hj h ↦ ?_⟩
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match j, Nat.lt_or_eq_of_le (Nat.le_of_lt_succ hj) with
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| j, Or.inl hj => exact Nat.le_trans (H _ hj h) (Nat.le_max_left _ _)
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| _, Or.inr rfl => simp [h, Nat.le_max_right]
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