test(tests/lean/run): add additional tests for section parameter/variable and strict implicit argument

tests/lean/run/sec_var.lean

@@ -0,0 +1,27 @@
+import logic
+
+section
+  parameter A : Type
+  definition foo : ∀ ⦃ a b : A ⦄, a = b → a = b :=
+  take a b H, H
+
+  variable a : A
+  set_option pp.implicit true
+  check foo (eq.refl a)
+  check foo
+  check foo = (λ (a b : A) (H : a = b), H)
+end
+
+check foo = (λ (A : Type) (a b : A) (H : a = b), H)
+
+section
+  variable A : Type
+  definition foo2 : ∀ ⦃ a b : A ⦄, a = b → a = b :=
+  take a b H, H
+
+  variable a : A
+  set_option pp.implicit true
+  check foo2 A (eq.refl a)
+  check foo2
+  check foo2 A = (λ (a b : A) (H : a = b), H)
+end