Add tests for checking unknown types and enums in array elements

I saw earlier that there probably was problems with processing of array types,
when such errors inside them not reported. Add tests to ensure that they are being checked

formats_err/type_unknown_many.ksy

@@ -7,6 +7,12 @@
 # type_unknown_many.ksy: /seq/2/enum:
 # 	error: unable to find enum 'unknown_enum', searching from 'type_unknown_many'
 #
+# type_unknown_many.ksy: /seq/3/type:
+# 	error: unable to find type 'unknown_type_in_array', searching from 'type_unknown_many'
+#
+# type_unknown_many.ksy: /seq/4/enum:
+# 	error: unable to find enum 'unknown_enum_in_array', searching from 'type_unknown_many'
+#
 meta:
   id: type_unknown_many
   ks-opaque-types: false
@@ -18,3 +24,10 @@ seq:
   - id: baz
     type: u1
     enum: unknown_enum
+  - id: type_in_array
+    type: unknown_type_in_array
+    repeat: eos
+  - id: enum_in_array
+    type: u1
+    enum: unknown_enum_in_array
+    repeat: eos