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test(tests/lean/run/simp_rfl_proof_issue): add simp refl proof test

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Leonardo de Moura 2017-06-05 15:36:26 -07:00
parent ea8ecfd390
commit f2ee88aecf
1 changed files with 16 additions and 0 deletions
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tests/lean/run/simp_rfl_proof_issue.lean Normal file
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@[irreducible] def f : nat → nat
| 0 := 1
| (n+1) := 2 * f n
lemma ex1 (n : nat) : f (n+1) = 2 * f n :=
begin
fail_if_success {refl},
simp only [f]
end
lemma ex2 (n : nat) (h : f (n+1) = 0) : 2 * f n = 0 :=
begin
fail_if_success {exact h},
simp only [f] at h,
exact h
end