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# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import json
from io import StringIO
import spack.util.timer as timer
class Tick:
"""Timer that increments the seconds passed by 1
everytime tick is called."""
def __init__(self):
self.time = 0.0
def tick(self):
self.time += 1
return self.time
def test_timer():
# 0
t = timer.Timer(now=Tick().tick)
# 1 (restart)
t.start()
# 2
t.start("wrapped")
# 3
t.start("first")
# 4
t.stop("first")
assert t.duration("first") == 1.0
# 5
t.start("second")
# 6
t.stop("second")
assert t.duration("second") == 1.0
# 7-8
with t.measure("third"):
pass
assert t.duration("third") == 1.0
# 9
t.stop("wrapped")
assert t.duration("wrapped") == 7.0
# tick 10-13
t.start("not-stopped")
assert t.duration("not-stopped") == 1.0
assert t.duration("not-stopped") == 2.0
assert t.duration("not-stopped") == 3.0
# 14
assert t.duration() == 13.0
# 15
t.stop()
assert t.duration() == 14.0
def test_timer_stop_stops_all():
# Ensure that timer.stop() effectively stops all timers.
# 0
t = timer.Timer(now=Tick().tick)
# 1
t.start("first")
# 2
t.start("second")
# 3
t.start("third")
# 4
t.stop()
assert t.duration("first") == 3.0
assert t.duration("second") == 2.0
assert t.duration("third") == 1.0
assert t.duration() == 4.0
def test_stopping_unstarted_timer_is_no_error():
t = timer.Timer(now=Tick().tick)
assert t.duration("hello") == 0.0
t.stop("hello")
assert t.duration("hello") == 0.0
def test_timer_write():
text_buffer = StringIO()
json_buffer = StringIO()
# 0
t = timer.Timer(now=Tick().tick)
# 1
t.start("timer")
# 2
t.stop("timer")
# 3
t.stop()
t.write_tty(text_buffer)
t.write_json(json_buffer)
output = text_buffer.getvalue().splitlines()
assert "timer" in output[0]
assert "1.000s" in output[0]
assert "total" in output[1]
assert "3.000s" in output[1]
deserialized = json.loads(json_buffer.getvalue())
assert deserialized == {
"phases": [{"name": "timer", "path": "timer", "seconds": 1.0, "count": 1}],
"total": 3.0,
}
def test_null_timer():
# Just ensure that the interface of the noop-timer doesn't break at some point
buffer = StringIO()
t = timer.NullTimer()
t.start()
t.start("first")
t.stop("first")
with t.measure("second"):
pass
t.stop()
assert t.duration("first") == 0.0
assert t.duration() == 0.0
assert not t.phases
t.write_json(buffer)
t.write_tty(buffer)
assert not buffer.getvalue()
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