refactor: extract validateSuperclass helper and move subclassing tests to inheritance directory

test/class/subclassing_class.wren

@@ -1,2 +0,0 @@
-class SubClass is Class {} // expect runtime error: Class 'SubClass' may not subclass a built-in
-

test/closure/subclassing_closure.wren

@@ -1,16 +0,0 @@
-var f = null
-
-{
-  var a = "a"
-  f = new Fn {
-    IO.print(a)
-  }
-}
-//@FIXME: repair the segfault create a propper test for the subclassing
-
-//var closureSegfault = f
-//class SubClosureSegfault is closureSegfault {} 
-
-//var closureOk = f.call
-//class SubClosureOk is closureOk {} 
-

test/fiber/subclassing_fiber.wren

@@ -1,2 +0,0 @@
-class SubFiber is Fiber {} // expect runtime error: Class 'SubFiber' may not subclass a built-in
-

test/function/subclassing_fn.wren

@@ -1,2 +0,0 @@
-class SubFn is Fn {} // expect runtime error: Class 'SubFn' may not subclass a built-in
-

test/inheritance/inherit_from_class.wren

@@ -0,0 +1 @@
+class Subclass is Class {} // expect runtime error: Subclass cannot inherit from Class.

test/inheritance/inherit_from_closure.wren

@@ -0,0 +1,8 @@
+var ClosureType
+
+{
+  var a = "a"
+  ClosureType = new Fn { IO.print(a) }.type
+}
+
+class Subclass is ClosureType {} // expect runtime error: Subclass cannot inherit from Fn.

test/inheritance/inherit_from_fiber.wren

@@ -0,0 +1 @@
+class Subclass is Fiber {} // expect runtime error: Subclass cannot inherit from Fiber.

test/inheritance/inherit_from_fn.wren

@@ -0,0 +1 @@
+class Subclass is Fn {} // expect runtime error: Subclass cannot inherit from Fn.

test/inheritance/inherit_from_list.wren

@@ -0,0 +1 @@
+class Subclass is List {} // expect runtime error: Subclass cannot inherit from List.

test/inheritance/inherit_from_map.wren

@@ -0,0 +1 @@
+class Subclass is Map {} // expect runtime error: Subclass cannot inherit from Map.

test/inheritance/inherit_from_nonclass.wren

@@ -0,0 +1 @@
+class Foo is 123 {} // expect runtime error: Must inherit from a class.

test/inheritance/inherit_from_range.wren

@@ -0,0 +1 @@
+class Subclass is Range {} // expect runtime error: Subclass cannot inherit from Range.

test/inheritance/inherit_from_string.wren

@@ -0,0 +1 @@
+class Subclass is String {} // expect runtime error: Subclass cannot inherit from String.

test/list/subclassing_list.wren

@@ -1 +0,0 @@
-class SubList is List {} // expect runtime error: Class 'SubList' may not subclass a built-in

test/map/subclassing_map.wren

@@ -1,2 +0,0 @@
-class SubMap is Map {} // expect runtime error: Class 'SubMap' may not subclass a built-in
-

test/range/subclassing_range.wren

@@ -1 +0,0 @@
-class SubRange is Range {} // expect runtime error: Class 'SubRange' may not subclass a built-in

test/string/subclassing_string.wren

@@ -1,2 +0,0 @@
-class SubString is String {} // expect runtime error: Class 'SubString' may not subclass a built-in
-