site_sysinfo_unittest.py revision 4c90cb9b25954953dbe409f292b031b54eaad17a 
1#!/usr/bin/python
2
3"""Tests for site_sysinfo."""
4
5__author__ = 'dshi@google.com (Dan Shi)'
6
7import common
8import os
9import random
10import unittest
11from autotest_lib.client.bin import site_sysinfo
12from autotest_lib.client.common_lib import autotemp
13
14
15class diffable_logdir_test(unittest.TestCase):
16    """Tests for methods in class diffable_logdir."""
17
18
19    def setUp(self):
20        """Initialize a temp direcotry with test files."""
21        self.tempdir = autotemp.tempdir(unique_id='diffable_logdir')
22        self.src_dir = os.path.join(self.tempdir.name, 'src')
23        self.dest_dir = os.path.join(self.tempdir.name, 'dest')
24
25        self.existing_files = ['existing_file_'+str(i) for i in range(3)]
26        self.existing_files_folder = ['', 'sub', 'sub/sub2']
27        self.existing_files_path = [os.path.join(self.src_dir, folder, f)
28                                    for f,folder in zip(self.existing_files,
29                                                self.existing_files_folder)]
30        self.new_files = ['new_file_'+str(i) for i in range(2)]
31        self.new_files_folder = ['sub', 'sub/sub3']
32        self.new_files_path = [os.path.join(self.src_dir, folder, f)
33                                    for f,folder in zip(self.new_files,
34                                                self.new_files_folder)]
35
36        # Create some file with random data in source directory.
37        for p in self.existing_files_path:
38            self.append_text_to_file(str(random.random()), p)
39
40
41    def tearDown(self):
42        """Clearn up."""
43        self.tempdir.clean()
44
45
46    def append_text_to_file(self, text, file_path):
47        """Append text to the end of a file, create the file if not existed.
48
49        @param text: text to be appended to a file.
50        @param file_path: path to the file.
51
52        """
53        dir_name = os.path.dirname(file_path)
54        if not os.path.exists(dir_name):
55            os.makedirs(dir_name)
56        with open(file_path, 'a') as f:
57            f.write(text)
58
59
60    def test_diffable_logdir_success(self):
61        """Test the diff function to save new data from a directory."""
62        info = site_sysinfo.diffable_logdir(self.src_dir,
63                                            keep_file_hierarchy=False,
64                                            append_diff_in_name=False)
65        # Run the first time to collect file status.
66        info.run(self.dest_dir)
67
68        # Add new files to the test directory.
69        for file_name, file_path in zip(self.new_files,
70                                         self.new_files_path):
71            self.append_text_to_file(file_name, file_path)
72
73        # Temp file for existing_file_2, used to hold on the inode. If the
74        # file is deleted and recreated, its inode might not change.
75        existing_file_2 = self.existing_files_path[2]
76        existing_file_2_tmp =  existing_file_2 + '_tmp'
77        os.rename(existing_file_2, existing_file_2_tmp)
78
79        # Append data to existing file.
80        for file_name, file_path in zip(self.existing_files,
81                                         self.existing_files_path):
82            self.append_text_to_file(file_name, file_path)
83
84        # Remove the tmp file.
85        os.remove(existing_file_2_tmp)
86
87        # Run the second time to do diff.
88        info.run(self.dest_dir)
89
90        # Validate files in dest_dir.
91        for file_name, file_path in zip(self.existing_files+self.new_files,
92                                self.existing_files_path+self.new_files_path):
93            file_path = file_path.replace('src', 'dest')
94            with open(file_path, 'r') as f:
95                self.assertEqual(file_name, f.read())
96
97
98if __name__ == '__main__':
99    unittest.main()
100