1#    Copyright 2015-2017 ARM Limited
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#     http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14#
15
16
17import unittest
18import os
19import shutil
20import subprocess
21import tempfile
22import trappy
23from trappy.ftrace import GenericFTrace
24
25TESTS_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
26
27def trace_cmd_installed():
28    """Return true if trace-cmd is installed, false otherwise"""
29    with open(os.devnull) as devnull:
30        try:
31            subprocess.check_call(["trace-cmd", "options"], stdout=devnull)
32        except OSError:
33            return False
34
35    return True
36
37class SetupDirectory(unittest.TestCase):
38    def __init__(self, files_to_copy, *args, **kwargs):
39        self.files_to_copy = files_to_copy
40        super(SetupDirectory, self).__init__(*args, **kwargs)
41        GenericFTrace.disable_cache = True
42
43    def setUp(self):
44        self.previous_dir = os.getcwd()
45
46        self.out_dir = tempfile.mkdtemp()
47        os.chdir(self.out_dir)
48
49        for src_fname, dst_fname in self.files_to_copy:
50            src_fname = os.path.join(TESTS_DIRECTORY, src_fname)
51            shutil.copy(src_fname, os.path.join(self.out_dir, dst_fname))
52
53    def tearDown(self):
54        os.chdir(self.previous_dir)
55        shutil.rmtree(self.out_dir)
56