making sure the issue comes from GDUnit addon folder

addons/gdUnit4/src/core/parse/GdFunctionArgument.gd

@@ -0,0 +1,208 @@
+class_name GdFunctionArgument
+extends RefCounted
+
+
+const GdUnitTools := preload("res://addons/gdUnit4/src/core/GdUnitTools.gd")
+const UNDEFINED: String = "<-NO_ARG->"
+const ARG_PARAMETERIZED_TEST := ["test_parameters", "_test_parameters"]
+
+static var _fuzzer_regex: RegEx
+static var _cleanup_leading_spaces: RegEx
+static var _fix_comma_space: RegEx
+
+var _name: String
+var _type: int
+var _type_hint: int
+var _default_value: Variant
+var _parameter_sets: PackedStringArray = []
+
+
+func _init(p_name: String, p_type: int, value: Variant = UNDEFINED, p_type_hint: int = TYPE_NIL) -> void:
+	_init_static_variables()
+	_name = p_name
+	_type = p_type
+	_type_hint = p_type_hint
+	if value != null and p_name in ARG_PARAMETERIZED_TEST:
+		_parameter_sets = _parse_parameter_set(str(value))
+	_default_value = value
+	# is argument a fuzzer?
+	if _type == TYPE_OBJECT and _fuzzer_regex.search(_name):
+		_type = GdObjects.TYPE_FUZZER
+
+
+func _init_static_variables() -> void:
+	if _fuzzer_regex == null:
+		_fuzzer_regex = GdUnitTools.to_regex("((?!(fuzzer_(seed|iterations)))fuzzer?\\w+)( ?+= ?+| ?+:= ?+| ?+:Fuzzer ?+= ?+|)")
+		_cleanup_leading_spaces = RegEx.create_from_string("(?m)^[ \t]+")
+		_fix_comma_space = RegEx.create_from_string(""", {0,}\t{0,}(?=(?:[^"]*"[^"]*")*[^"]*$)(?!\\s)""")
+
+
+func name() -> String:
+	return _name
+
+
+func default() -> Variant:
+	return type_convert(_default_value, _type)
+
+
+func set_value(value: String) -> void:
+	# we onle need to apply default values for Objects, all others are provided by the method descriptor
+	if _type == GdObjects.TYPE_FUZZER:
+		_default_value = value
+		return
+	if _name in ARG_PARAMETERIZED_TEST:
+		_parameter_sets = _parse_parameter_set(value)
+		_default_value = value
+		return
+
+	if _type == TYPE_NIL or _type == GdObjects.TYPE_VARIANT:
+		_type = _extract_value_type(value)
+		if _type == GdObjects.TYPE_VARIANT and _default_value == null:
+			_default_value = value
+	if _default_value == null:
+		match _type:
+			TYPE_DICTIONARY:
+				_default_value = as_dictionary(value)
+			TYPE_ARRAY:
+				_default_value = as_array(value)
+			GdObjects.TYPE_FUZZER:
+				_default_value = value
+			_:
+				_default_value = str_to_var(value)
+				# if converting fails assign the original value without converting
+				if _default_value == null and value != null:
+					_default_value = value
+		#prints("set default_value: ", _default_value, "with type %d" % _type, " from original: '%s'" % value)
+
+
+func _extract_value_type(value: String) -> int:
+	if value != UNDEFINED:
+		if _fuzzer_regex.search(_name):
+			return GdObjects.TYPE_FUZZER
+		if value.rfind(")") == value.length()-1:
+			return GdObjects.TYPE_FUNC
+	return _type
+
+
+func value_as_string() -> String:
+	if has_default():
+		return GdDefaultValueDecoder.decode_typed(_type, _default_value)
+	return ""
+
+
+func plain_value() -> Variant:
+	return _default_value
+
+
+func type() -> int:
+	return _type
+
+
+func type_hint() -> int:
+	return _type_hint
+
+
+func has_default() -> bool:
+	return not is_same(_default_value, UNDEFINED)
+
+
+func is_typed_array() -> bool:
+	return _type == TYPE_ARRAY and _type_hint != TYPE_NIL
+
+
+func is_parameter_set() -> bool:
+	return _name in ARG_PARAMETERIZED_TEST
+
+
+func parameter_sets() -> PackedStringArray:
+	return _parameter_sets
+
+
+static func get_parameter_set(parameters :Array[GdFunctionArgument]) -> GdFunctionArgument:
+	for current in parameters:
+		if current != null and current.is_parameter_set():
+			return current
+	return null
+
+
+func _to_string() -> String:
+	var s := _name
+	if _type != TYPE_NIL:
+		s += ": " + GdObjects.type_as_string(_type)
+	if _type_hint != TYPE_NIL:
+		s += "[%s]" % GdObjects.type_as_string(_type_hint)
+	if has_default():
+		s += "=" + value_as_string()
+	return s
+
+
+func _parse_parameter_set(input :String) -> PackedStringArray:
+	if not input.contains("["):
+		return []
+
+	input = _cleanup_leading_spaces.sub(input, "", true)
+	input = input.replace("\n", "").strip_edges().trim_prefix("[").trim_suffix("]").trim_prefix("]")
+	var single_quote := false
+	var double_quote := false
+	var array_end := 0
+	var current_index := 0
+	var output :PackedStringArray = []
+	var buf := input.to_utf8_buffer()
+	var collected_characters: = PackedByteArray()
+	var matched :bool = false
+
+	for c in buf:
+		current_index += 1
+		matched = current_index == buf.size()
+		@warning_ignore("return_value_discarded")
+		collected_characters.push_back(c)
+
+		match c:
+			# ' ': ignore spaces between array elements
+			32: if array_end == 0 and (not double_quote and not single_quote):
+					collected_characters.remove_at(collected_characters.size()-1)
+			# ',': step over array element seperator ','
+			44: if array_end == 0:
+					matched = true
+					collected_characters.remove_at(collected_characters.size()-1)
+			# '`':
+			39: single_quote = !single_quote
+			# '"':
+			34: if not single_quote: double_quote = !double_quote
+			# '['
+			91: if not double_quote and not single_quote: array_end +=1 # counts array open
+			# ']'
+			93: if not double_quote and not single_quote: array_end -=1 # counts array closed
+
+		# if array closed than collect the element
+		if matched:
+			var parameters := _fix_comma_space.sub(collected_characters.get_string_from_utf8(), ", ", true)
+			if not parameters.is_empty():
+				@warning_ignore("return_value_discarded")
+				output.append(parameters)
+			collected_characters.clear()
+			matched = false
+	return output
+
+
+## value converters
+
+func as_array(value: String) -> Array:
+	if value == "Array()" or value == "[]":
+		return []
+
+	if value.begins_with("Array("):
+		value = value.lstrip("Array(").rstrip(")")
+	if value.begins_with("["):
+		return str_to_var(value)
+	return []
+
+
+func as_dictionary(value: String) -> Dictionary:
+	if value == "Dictionary()":
+		return {}
+	if value.begins_with("Dictionary("):
+		value = value.lstrip("Dictionary(").rstrip(")")
+	if value.begins_with("{"):
+		return str_to_var(value)
+	return {}