def test_view_purchases_logs_header_message(self, machine: VendingMachine,
caplog):
"""
Test case should ensure that a header message gets emitted, regardless
of whether there were purchases or not.
"""
machine.view_purchases()
self.logs_one_message(caplog)
assert "You've spent 0 on 0 items." in caplog.text
assert "You bought" not in caplog.text
def test_view_purchases_log(self, loaded_machine: VendingMachine, caplog):
"""
Test case ensures that the correct number of messages get logged.
"""
loaded_machine.purchase_item("A1")
loaded_machine.purchase_item("A1")
# Clearing messages emitted by purchasing the item
caplog.clear()
loaded_machine.view_purchases()
assert len(caplog.records) == 3
assert "You bought" in caplog.text