lean4-htt/tests/elab_fail/getElem.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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def f1 (a : Array Nat) (i : Nat) :=
a[i]
def f2 (a : Array Nat) (i : Fin a.size) :=
a[i] -- Ok
def f3 (a : Array Nat) (h : n ≤ a.size) (i : Fin n) :=
a[i] -- Ok
opaque a : Array Nat
opaque n : Nat
axiom n_lt_a_size : n < a.size
def f4 (i : Nat) (h : i < n) :=
have : i < a.size := Nat.lt_trans h n_lt_a_size
a[i]
def f5 (i : Nat) (h : i < n) :=
a[i]'(Nat.lt_trans h n_lt_a_size)
def f6 (i : Nat) :=
a[i]!
def f7 (i : Nat) :=
a[i]?
#print f2
#print f3
#print f5
#print f6
#print f7
def withRange (xs : Array Nat) : Option Nat := Id.run do
for h : i in [:xs.size] do
if i == xs[i] then
return i
return none
def withTwoRanges (xs : Array Nat) : Option Nat := Id.run do
for h1 : i in [:xs.size] do
for h2 : j in [i + 1:xs.size] do
if xs[i] == xs[j] then
return i
return none
def palindromeNeedsOmega (xs : Array Nat) : Bool := Id.run do
for h : i in [:xs.size/2] do
have : i < xs.size/2 := h.2.1 -- omega does not understand range yet
if xs[xs.size - 1 - i] ≠ xs[i] then
return false
return true