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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Tests for heat_map.py."""
from __future__ import print_function
import unittest.mock as mock
import unittest
import os
from cros_utils import command_executer
from heatmaps import heat_map
from heatmaps import heatmap_generator
def make_heatmap(chromeos_root='/path/to/fake/chromeos_root/',
perf_data='/any_path/perf.data'):
return heat_map.HeatMapProducer(chromeos_root, perf_data, None, None, '')
def fake_mkdtemp(prefix):
"""Mock tempfile.mkdtemp() by just create a pathname."""
return prefix + 'random_dir'
def fake_parser_error(_, msg):
"""Redirect parser.error() to exception."""
raise Exception(msg)
def fake_generate_perf_report_exception(_):
raise Exception
class HeatmapTest(unittest.TestCase):
"""All of our tests for heat_map."""
# pylint: disable=protected-access
@mock.patch('shutil.copy2')
@mock.patch('tempfile.mkdtemp')
def test_EnsureFileInChrootAlreadyInside(self, mock_mkdtemp, mock_copy):
perf_data_inchroot = (
'/path/to/fake/chromeos_root/chroot/inchroot_path/perf.data')
heatmap = make_heatmap(perf_data=perf_data_inchroot)
heatmap._EnsureFileInChroot()
self.assertFalse(heatmap.temp_dir_created)
self.assertEqual(heatmap.temp_dir,
'/path/to/fake/chromeos_root/chroot/inchroot_path/')
self.assertEqual(heatmap.temp_perf_inchroot, '/inchroot_path/')
mock_mkdtemp.assert_not_called()
mock_copy.assert_not_called()
@mock.patch('shutil.copy2')
@mock.patch('tempfile.mkdtemp', fake_mkdtemp)
def test_EnsureFileInChrootOutsideNeedCopy(self, mock_copy):
heatmap = make_heatmap()
heatmap._EnsureFileInChroot()
self.assertTrue(heatmap.temp_dir_created)
self.assertEqual(mock_copy.call_count, 1)
self.assertEqual(heatmap.temp_dir,
'/path/to/fake/chromeos_root/src/random_dir')
self.assertEqual(heatmap.temp_perf_inchroot, '~/trunk/src/random_dir')
@mock.patch.object(command_executer.CommandExecuter, 'ChrootRunCommand')
def test_GeneratePerfReport(self, mock_ChrootRunCommand):
heatmap = make_heatmap()
heatmap.temp_dir = '/fake/chroot/inchroot_path/'
heatmap.temp_perf_inchroot = '/inchroot_path/'
mock_ChrootRunCommand.return_value = 0
heatmap._GeneratePerfReport()
cmd = ('cd %s && perf report -D -i perf.data > perf_report.txt' %
heatmap.temp_perf_inchroot)
mock_ChrootRunCommand.assert_called_with(heatmap.chromeos_root, cmd)
self.assertEqual(mock_ChrootRunCommand.call_count, 1)
self.assertEqual(heatmap.perf_report,
'/fake/chroot/inchroot_path/perf_report.txt')
@mock.patch.object(heatmap_generator, 'HeatmapGenerator')
def test_GetHeatMap(self, mock_heatmap_generator):
heatmap = make_heatmap()
heatmap._GetHeatMap(10)
self.assertTrue(mock_heatmap_generator.called)
@mock.patch.object(heat_map.HeatMapProducer, '_EnsureFileInChroot')
@mock.patch.object(heat_map.HeatMapProducer, '_GeneratePerfReport')
@mock.patch.object(heat_map.HeatMapProducer, '_GetHeatMap')
@mock.patch.object(heat_map.HeatMapProducer, '_RemoveFiles')
def test_Run(self, mock_remove_files, mock_get_heatmap,
mock_generate_perf_report, mock_ensure_file_in_chroot):
heatmap = make_heatmap()
heatmap.Run(10)
mock_ensure_file_in_chroot.assert_called_once_with()
mock_generate_perf_report.assert_called_once_with()
mock_get_heatmap.assert_called_once_with(10)
mock_remove_files.assert_called_once_with()
@mock.patch.object(heat_map.HeatMapProducer, '_EnsureFileInChroot')
@mock.patch.object(
heat_map.HeatMapProducer,
'_GeneratePerfReport',
new=fake_generate_perf_report_exception)
@mock.patch.object(heat_map.HeatMapProducer, '_GetHeatMap')
@mock.patch.object(heat_map.HeatMapProducer, '_RemoveFiles')
@mock.patch('builtins.print')
def test_Run_with_exception(self, mock_print, mock_remove_files,
mock_get_heatmap, mock_ensure_file_in_chroot):
heatmap = make_heatmap()
with self.assertRaises(Exception):
heatmap.Run(10)
mock_ensure_file_in_chroot.assert_called_once_with()
mock_get_heatmap.assert_not_called()
mock_remove_files.assert_called_once_with()
mock_print.assert_not_called()
@mock.patch('argparse.ArgumentParser.error', fake_parser_error)
@mock.patch.object(os.path, 'isfile')
@mock.patch.object(heat_map, 'IsARepoRoot')
def test_main_arg_format(self, mock_IsARepoRoot, mock_isfile):
"""Test wrong arg format are detected."""
args = ['--chromeos_root=/fake/chroot/', '--perf_data=/path/to/perf.data']
# Test --chromeos_root format
mock_IsARepoRoot.return_value = False
with self.assertRaises(Exception) as msg:
heat_map.main(args)
self.assertIn('does not contain .repo dir.', str(msg.exception))
# Test --perf_data format
mock_IsARepoRoot.return_value = True
mock_isfile.return_value = False
with self.assertRaises(Exception) as msg:
heat_map.main(args)
self.assertIn('Cannot find perf_data', str(msg.exception))
# Test --hugepage format
mock_isfile.return_value = True
args.append('--hugepage=0')
with self.assertRaises(Exception) as msg:
heat_map.main(args)
self.assertIn('Wrong format of hugepage range', str(msg.exception))
# Test --hugepage parse
args[-1] = '--hugepage=0,4096'
heat_map.HeatMapProducer = mock.MagicMock()
heat_map.main(args)
heat_map.HeatMapProducer.assert_called_with(
'/fake/chroot/', '/path/to/perf.data', [0, 4096], None, '')
if __name__ == '__main__':
unittest.main()
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