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
507 B
Text
25 lines
507 B
Text
/--
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info: x y : Nat
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h : y = 0
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⊢ id (2 * x + y) = id (2 * x)
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-/
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#guard_msgs in
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example (x y : Nat) (h : y = 0) : id ((x + x) + y) = id (x + x) := by
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simp_arith only
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/-
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This is a test for a `simp` cache issue where the following incorrect goal was being
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produced.
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```
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... |- id (2*x + y) = id (x + x)
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```
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instead of
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```
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... |- id (2*x + y) = id (2*x)
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```
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-/
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trace_state
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simp [h]
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example (x y : Nat) (h : y = 0) : id (x + x) = id ((x + x) + y) := by
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simp_arith only
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simp [h]
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