# Generate case name based on `MMethodDef`.
	# special method name like "[]", "+"... are filtered
	private fun case_name(mmethoddef: MMethodDef): String do
		var name = mmethoddef.name
		if name == "[]" then return "test_bra"
		if name == "[]=" then return "test_bra_assign"
		if name == "+" then return "test_plus"
		if name == "-" then return "test_minus"
		if name == "*" then return "test_star"
		if name == "/" then return "test_slash"
		if name == "%" then return "test_percent"
		if name == "unary -" then return "test_unary_minus"
		if name == "==" then return "test_equals"
		if name == "!=" then return "test_not_equals"
		if name == "<" then return "test_lt"
		if name == "<=" then return "test_le"
		if name == "<=>" then return "test_compare"
		if name == ">=" then return "test_ge"
		if name == ">" then return "test_gt"
		return "test_{name}"
	end