@@ -0,0 +1,408 @@
+import pytest%0Afrom plenum.common.messages.fields import TimestampField%0Afrom plenum.test.input_validation.utils import *%0A%0A%0Adef test_value_range_validation():%0A    max_possible_timestamp_value = 253402290000.0 - 1  # unix time limitation%0A    validator = TimestampField()%0A    assert_valid(validator.validate(max_possible_timestamp_value))%0A    assert_invalid(validator.validate(max_possible_timestamp_value + 1))%0A

add test for timestamp validation