Add regression tests for univ. poly. and prim proj

These regression tests are aggregated from the various bugs I (and
others) have reported on https://github.com/HoTT/coq/issues relating to
universe polymorphism, primitive projections, and eta for records.
These are the tests that trunk currently passes.

I'm not sure about the naming scheme (HoTT_coq_###.v, where ### is the
number of the issue in GitHub), but I couldn't think of a better one.

1 files changed, 14 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/HoTT_coq_028.v b/test-suite/bugs/closed/HoTT_coq_028.v
new file mode 100644
index 000000000..b03241402
--- /dev/null
+++ b/test-suite/bugs/closed/HoTT_coq_028.v
@@ -0,0 +1,14 @@
+Goal forall (O obj : Type) (f : O -> obj) (x : O) (e : x = x)
+     (T : obj -> obj -> Type) (m : forall x0 : obj, T x0 x0),
+   match eq_sym e in (_ = y) return (T (f y) (f x)) with
+   | eq_refl => m (f x)
+   end = m (f x).
+intros.
+try case e.
+(* Toplevel input, characters 19-25:
+Error: Cannot instantiate metavariable P of type
+"forall a : O, x = a -> Prop" with abstraction
+"fun (x : O) (e : x = x) =>
+ match eq_sym e in (_ = y) return (T (f y) (f x)) with
+ | eq_refl => m (f x)
+ end = m (f x)" of incompatible type "forall x : O, x = x -> Prop". *)