def test_step(self):
title = 'Calculated some random impact'
description = 'Calculated some random impact'
provenance_step = ProvenanceStep(title, description)
# check that we get the correct step message
self.assertIs(provenance_step.title, title)
# check that the timestamp is correct
delta_seconds = (datetime.now() - provenance_step.time).total_seconds()
self.assertLessEqual(delta_seconds, 0.1)
def append_step(self, title, description, timestamp=None):
"""
Append a new provenance step.
:param title: the title of the ProvenanceStep
:type title: str
:param description: the description of the ProvenanceStep
:type description: str
:param timestamp: the time of the ProvenanceStep
:type timestamp: datetime
:return: the time of the ProvenanceStep
:rtype: datetime
"""
step = ProvenanceStep(title, description, timestamp)
self._steps.append(step)
return step.time
