GDScript: Fix typing of iterator in for loop

modules/gdscript/tests/scripts/runtime/features/for_loop_iterator_types.gd

@@ -0,0 +1,51 @@
+const constant_float = 1.0
+const constant_int = 1
+enum { enum_value = 1 }
+
+class Iterator:
+	func _iter_init(_count):
+		return true
+	func _iter_next(_count):
+		return false
+	func _iter_get(_count) -> StringName:
+		return &'custom'
+
+func test():
+	var hard_float := 1.0
+	var hard_int := 1
+	var hard_string := '0'
+	var hard_iterator := Iterator.new()
+
+	var variant_float: Variant = hard_float
+	var variant_int: Variant = hard_int
+	var variant_string: Variant = hard_string
+	var variant_iterator: Variant = hard_iterator
+
+	for i in 1.0:
+		print(typeof(i) == TYPE_FLOAT)
+	for i in 1:
+		print(typeof(i) == TYPE_INT)
+	for i in 'a':
+		print(typeof(i) == TYPE_STRING)
+	for i in Iterator.new():
+		print(typeof(i) == TYPE_STRING_NAME)
+
+	for i in hard_float:
+		print(typeof(i) == TYPE_FLOAT)
+	for i in hard_int:
+		print(typeof(i) == TYPE_INT)
+	for i in hard_string:
+		print(typeof(i) == TYPE_STRING)
+	for i in hard_iterator:
+		print(typeof(i) == TYPE_STRING_NAME)
+
+	for i in variant_float:
+		print(typeof(i) == TYPE_FLOAT)
+	for i in variant_int:
+		print(typeof(i) == TYPE_INT)
+	for i in variant_string:
+		print(typeof(i) == TYPE_STRING)
+	for i in variant_iterator:
+		print(typeof(i) == TYPE_STRING_NAME)
+
+	print('ok')

modules/gdscript/tests/scripts/runtime/features/for_loop_iterator_types.out

@@ -0,0 +1,14 @@
+GDTEST_OK
+true
+true
+true
+true
+true
+true
+true
+true
+true
+true
+true
+true
+ok