lean4-htt/tests/elab/4670.lean
Garmelon 08eb78a5b2
chore: switch to new test/bench suite (#12590)
This PR sets up the new integrated test/bench suite. It then migrates
all benchmarks and some related tests to the new suite. There's also
some documentation and some linting.

For now, a lot of the old tests are left alone so this PR doesn't become
even larger than it already is. Eventually, all tests should be migrated
to the new suite though so there isn't a confusing mix of two systems.
2026-02-25 13:51:53 +00:00

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/-!
# Check types when pretty printing dot notation for structure projections
In type mismatch errors, the 'object of dot notation' might not be valid for dot notation.
-/
structure Foo : Type where
out : Nat
/-!
Was printing `true.out`, but it should have been `Foo.out true`.
-/
/--
error: Application type mismatch: The argument
true
has type
Bool
but is expected to have type
Foo
in the application
Foo.out true
---
info: sorry.out : Nat
-/
#guard_msgs in #check Foo.out true
/-!
Verifying that generalized field notation does not have this bug.
-/
def Foo.out' (f : Foo) : Nat := f.out
/--
error: Application type mismatch: The argument
true
has type
Bool
but is expected to have type
Foo
in the application
Foo.out' true
---
info: sorry.out' : Nat
-/
#guard_msgs in #check Foo.out' true
/-!
Verifying that projection notation still pretty prints as normal.
-/
section
variable (f : Foo)
/-- info: f.out : Nat -/
#guard_msgs in #check f.out
end
/-!
Verifying that projection notation still pretty prints through type synonys.
-/
section
def Baz := Foo
variable (f : Baz)
/-- info: f.out : Nat -/
#guard_msgs in #check f.out
end