Files
lean4/tests/elab/termination_by_where.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

/-!
This module systematically tests the relative placement of `decreasing_by` and `where`.
-/
-- For concise recursive definition that need well-founded recursion
-- and `decreasing_by` tactics that would fail if run on the wrong function
opaque dec1 : Nat Nat
axiom dec1_lt (n : Nat) : dec1 n < n
opaque dec2 : Nat Nat
axiom dec2_lt (n : Nat) : dec2 n < n
def foo (n : Nat) := foo (dec1 n) + bar n
decreasing_by apply dec1_lt
where
bar (m : Nat) : Nat := bar (dec2 m)
decreasing_by apply dec2_lt