def test_parse_vm_stat_output(self):
vm_stat_data = open('tests/vm_stat_output.txt').read()
from usage_grapher import parse_vm_stat_output
output = parse_vm_stat_output(vm_stat_data)
eq_(len(output), 23)
assert 'Swapins' in output.keys()
assert 'Pages zero filled' in output.keys()
eq_('1159022', output['Pages purged'])
eq_('1099822', output['Pages active'])
eq_('74033590', output['"Translation faults"'])
def test_store_data(self):
# get some data
vm_stat_data = open('tests/vm_stat_output.txt').read()
from usage_grapher import parse_vm_stat_output
parsed_data = parse_vm_stat_output(vm_stat_data)
# create a place for the function to write the data
buf = StringIO()
open_dingus = dingus.Dingus()
open_dingus.return_value.__enter__.return_value = buf
# run our actual method
with dingus.patch('__builtin__.open', open_dingus):
from usage_grapher import persist_vm_stat_data
persist_vm_stat_data(parsed_data)
output = buf.getvalue()
assert output.startswith("74033590,")
assert output.strip().endswith("384190")
