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.)
25 lines
837 B
Text
25 lines
837 B
Text
class Vec (X : Type) extends Add X, Inhabited X
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class Vec' (X : Type) extends Vec X
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def differential {X Y : Type} [Vec X] [Vec Y] (f : X → Y) (x dx : X) : Y := f dx
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@[simp]
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theorem differential_of_linear {X Y : Type} [Vec X] [Vec Y] (f : X → Y) (x dx : X)
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: differential f x dx = f dx := by simp[differential]
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example {X Y : Type} [Vec X] [Vec Y] (f : X → Y) (x dx : X)
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: differential f x dx = f dx := by simp
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instance : Vec Nat := ⟨⟩
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instance : Vec' Nat := ⟨⟩
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set_option trace.Meta.Tactic.simp true
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/--
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info: [Meta.Tactic.simp.rewrite] @differential_of_linear:1000, differential f x dx ==> f dx
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[Meta.Tactic.simp.rewrite] @eq_self:1000, f dx = f dx ==> True
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-/
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#guard_msgs in
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example {Y : Type} [Vec Y] (f : Nat → Y) (x dx : Nat)
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: @differential _ _ Vec'.toVec _ f x dx = f dx :=
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by simp
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