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.)
29 lines
591 B
Text
29 lines
591 B
Text
def Nat.isZero (x : Nat) : Bool :=
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match x with
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| 0 => true
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| x+1 => false
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/--
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info: x : Nat
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⊢ (1 + x).isZero = false
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-/
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#guard_msgs in
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example (x : Nat) : (1 + id x.succ.pred).isZero = false := by
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dsimp
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trace_state
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simp [Nat.succ_add]
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dsimp [Nat.isZero]
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#check Nat.pred_succ
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example (x : Nat) : (id x.succ.succ).isZero = false := by
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dsimp [Nat.isZero]
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example (x : Nat) : (id x.succ.succ).isZero = false := by
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dsimp!
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@[simp] theorem isZero_succ (x : Nat) : (x + 1).isZero = false :=
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rfl
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theorem ex1 (x : Nat) : (id x.succ.succ.pred).isZero = false := by
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dsimp
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