lean4-htt/tests/elab_fail/root.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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namespace Foo
def y := 10
def _root_.Bla.f (x : Nat) := x + y
#check Bla.f
example : Bla.f 5 = 15 := rfl
def _root_.g (x : Nat) :=
match x with
| 0 => 1
| x+1 => 2*g x
def _root_.Boo.g (x : Nat) :=
match x with
| 0 => 1
| x+1 => 3 * Boo.g x
protected def _root_.h (x : Nat) := x -- Error
example : g 3 = 8 := rfl
example : Boo.g 2 = 9 := rfl
end Foo
def _root_ (y : Nat) := y + 1 -- Error
def _root_._root_ (y : Nat) := y -- Error
def _root_.f._root_ (y : Nat) := y -- Error
protected def _root_.h (x : Nat) := x -- Error
protected def _root_.Boo.h (x : Nat) := x
example : Boo.h x = x := rfl
#check h -- Error
#check f -- Error
open Bla
#check f -- Ok
namespace Test
mutual
def _root_.isEven (x : Nat) :=
match x with
| 0 => true
| x+1 => isOdd x
def _root_.isOdd (x : Nat) :=
match x with
| 0 => false
| x+1 => isEven x
end
private def _root_.prv (x : Nat) := x + x + x
example : prv 5 = 15 := rfl
end Test
example : isEven 0 = true := by simp! [isOdd, isEven]
example : isOdd 1 = true := by simp! [isOdd, isEven]
example : isEven 2 = true := by simp! [isOdd, isEven]
example : prv 5 = 15 := rfl
set_option pp.raw true in
#check prv
namespace Ex
@[scoped simp] theorem _root_.isEven_of_isOdd (x : Nat) : isEven (x+1) = isOdd x := by simp [isEven]
@[scoped simp] theorem _root_.isOdd_of_isEven (x : Nat) : isOdd (x+1) = isEven x := by simp [isOdd]
example : isEven (x+1+1) = isEven x := by simp -- Ok
end Ex
example : isEven (x+1+1) = isEven x := by simp (config := { failIfUnchanged := false }); done -- Error
open Ex in
example : isEven (x+1+1) = isEven x := by simp -- Ok
example : isEven (x+1+1) = isEven x := by simp (config := { failIfUnchanged := false }); done -- Error
namespace Foo
def _root_.Bla.g (x : Nat) : Nat :=
match x with
| 0 => 1
| .succ x => h x + g x
where
h (x : Nat) :=
match x with
| 0 => 2
| .succ x => 2 * g x
def _root_.Bla.g' (x : Nat) : Nat :=
match x with
| 0 => 1
| .succ x => g' x
end Foo