lean4-htt/tests/lean/run/8815.lean
jrr6 62f14514da
refactor: update built-in tactic error messages (#9633)
This PR updates various error messages produced by or associated with
built-in tactics and adapts their formatting to current conventions.
2025-07-31 14:16:57 +00:00

62 lines
1.4 KiB
Text

/-!
Assortion of tests to make sure the #8815 simp arg elaboration refactoring did not change
behavior.
-/
set_option linter.unusedVariables false
example (P Q : Prop) (hQ : Q) (hP : P) : P := by simp [*, -hQ]
/-- error: `simp` made no progress -/
#guard_msgs in example (P Q : Prop) (hQ : Q) (hP : P) : P := by simp [*, -hP]
/-- error: Unknown constant `hQ` -/
#guard_msgs in example (P Q : Prop) (hQ : Q) (hP : P) : P := by simp [-hQ, *]
#guard_msgs in example (P Q : Prop) (hQ : Q) (hP : P) : P := by simp_all [-hQ]
/--
error: Unknown constant `hQ`
---
error: `simp` made no progress
-/
#guard_msgs in example (P Q : Prop) (hQ : Q) (hP : P) : P := by simp [-hQ]
theorem a_thm : True := trivial
def f : Nat → Nat
| 0 => 1
| n + 1 => f n + 1
example : f 0 > 0 := by simp [f]
example : f 0 > 0 := by simp!
-- NB: simp! disables all warnings, not just for declarations to unfold
-- Mild bug, but not a regresion.
/--
error: unsolved goals
⊢ 0 < f 0
-/
#guard_msgs in example : f 0 > 0 := by simp! [-f, -a_thm]
/--
warning: `f` does not have the `[simp]` attribute
---
warning: `a_thm` does not have the `[simp]` attribute
---
error: unsolved goals
⊢ 0 < f 0
-/
#guard_msgs in example : f 0 > 0 := by
simp [-f, -a_thm]
/--
error: Invalid simp theorem: Expected a proposition, but found
Type 32
-/
#guard_msgs in
example : True := by simp [Sort 32] -- mostly about error location, once guard_msgs shows that