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.)
28 lines
716 B
Text
28 lines
716 B
Text
def f {α} (a b : α) := a
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theorem f_Eq {α} (a b : α) : f a b = a :=
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rfl
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theorem ex1 (a b c : α) : f (f a b) c = a := by
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simp [f_Eq]
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/--
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info: theorem ex1.{u_1} : ∀ {α : Sort u_1} (a b c : α), f (f a b) c = a :=
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fun {α} a b c => of_eq_true (eq_self a)
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-/
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#guard_msgs in
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#print ex1
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theorem ex2 (p : Nat → Bool) (x : Nat) (h : p x = true) : (if p x then 1 else 2) = 1 := by
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simp [h]
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/--
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info: theorem ex2 : ∀ (p : Nat → Bool) (x : Nat), p x = true → (if p x = true then 1 else 2) = 1 :=
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fun p x h =>
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of_eq_true
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(Eq.trans
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(congrArg (fun x => x = 1) (ite_cond_eq_true 1 2 (Eq.trans (congrArg (fun x => x = true) h) (eq_self true))))
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(eq_self 1))
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-/
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#guard_msgs in
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#print ex2
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