3a457e6ad6
Many of our tests in `tests/lean/run/` produce output from `#eval` (or `#check`) statements, that is then ignored. This PR tries to capture all the useful output using `#guard_msgs`. I've only done a cursory check that the output is still sane --- there is a chance that some "unchecked" tests have already accumulated regressions and this just cements them! In the other direction, I did identify two rotten tests: * a minor one in `setStructInstNotation.lean`, where a comment says `Set Nat`, but `#check` actually prints `?_`. Weird? * `CompilerProbe.lean` is generating empty output, apparently indicating that something is broken, but I don't know the signficance of this file. In any case, I'll ask about these elsewhere. (This started by noticing that a recent `grind` test file had an untested `trace_state`, and then got carried away.)
39 lines
844 B
Text
39 lines
844 B
Text
universe u v
|
||
|
||
structure InjectiveFunction (α : Type u) (β : Type v) where
|
||
fn : α → β
|
||
inj : ∀ a b, fn a = fn b → a = b
|
||
|
||
def add1 : InjectiveFunction Nat Nat where
|
||
fn a := a + 1
|
||
inj a b h := by injection h
|
||
|
||
instance : CoeFun (InjectiveFunction α β) (fun _ => α → β) where
|
||
coe s := s.fn
|
||
|
||
#guard add1 10 == 11
|
||
|
||
def mapAdd1 (xs : List Nat) : List Nat :=
|
||
xs.map add1
|
||
|
||
#guard mapAdd1 [1, 2] = [2, 3]
|
||
|
||
def foo : InjectiveFunction Bool (Nat → Nat) where
|
||
fn
|
||
| true, a => a + 1
|
||
| false, a => a
|
||
inj a b h := by
|
||
cases a
|
||
cases b; rfl; injection (congrFun h 0)
|
||
cases b; injection (congrFun h 0); rfl
|
||
|
||
theorem ex1 (x : Nat) : foo true x = x + 1 :=
|
||
rfl
|
||
|
||
theorem ex2 (x : Nat) : foo false x = x :=
|
||
rfl
|
||
|
||
#guard foo true 10 == 11
|
||
#guard foo false 20 == 20
|
||
|
||
#guard [1, 2, 3].map (foo true) = [2, 3, 4]
|