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lean4/tests/elab/issue10683.lean
Garmelon 08eb78a5b2 chore: switch to new test/bench suite (#12590)
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.
2026-02-25 13:51:53 +00:00

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Lean4

def orderedInsert (a : Nat) : List Nat List Nat
| [] => [a]
| b :: l => if a < b then a :: b :: l else b :: orderedInsert a l
/-- error: Variable `x` cannot be generalized because the induction principle depends on it -/
#guard_msgs in
example : orderedInsert x l = [] := by
induction l using orderedInsert.induct_unfolding (a := x) generalizing x
/-- error: Variable `x` cannot be generalized because the induction principle depends on it -/
#guard_msgs in
example : orderedInsert x l = [] := by
fun_induction orderedInsert generalizing x
axiom foo_induct (n : Nat) {motive : Nat Prop} (h : m, n = m): m, motive m
/-- error: Variable `n` cannot be generalized because the induction principle depends on it -/
#guard_msgs in
example (n m : Nat) : n = m := by
induction m using foo_induct (n := n) generalizing n