annotate test/filesupport.py @ 557:9824e409388b

Refactor git branching If a checkout is already available and the branch is changed in the config git command would always fail because it doesn't know the branch to track. Therefore always check if the branch is locally available and if not checkout the remote branch
author Bjoern Ricks <bricks@intevation.de>
date Fri, 02 Sep 2011 08:45:28 +0000
parents e3ab8aca2b08
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1 # Copyright (C) 2007, 2008 by Intevation GmbH
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2 # Authors:
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3 # Bernhard Herzog <bh@intevation.de>
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4 #
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5 # This program is free software under the GPL (>=v2)
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6 # Read the file COPYING coming with the software for details.
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7
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8 """Support code for the test cases"""
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9
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10 import os
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11 import shutil
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12 from treepkg.util import writefile
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15 def create_temp_dir():
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16 """Create a temporary directory for the test-suite and return its name.
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17
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18 The temporary directory is always called temp and is created in the
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19 directory where the support module is located.
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20
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21 If the temp directory already exists, just return the name.
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22 """
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23 name = os.path.abspath(os.path.join(os.path.dirname(__file__), "temp"))
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24
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25 # if the directory already exists, we're done
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26 if os.path.isdir(name):
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27 return name
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28
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29 # create the directory
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30 os.mkdir(name)
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31 return name
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33
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34 class FileTestMixin:
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35
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36 """Mixin class for tests that use temporary files.
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37
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38 Instances of this class create a test-specific sub-directory under
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39 the main test temp directory. The name of the sub-directory is the
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40 return value of the test's id() method.
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41 """
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42
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43 _test_specific_directory_created = False
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44
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45 def create_test_specific_temp_dir(self):
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46 """Creates the test specific directory and returns its absolute name.
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47 When this method is called for the first time and the directory
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48 exists, if is removed, so that a specific test instance always
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49 starts with an empty directory.
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50 """
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51 dirname = os.path.join(create_temp_dir(), self.id())
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52 if not self._test_specific_directory_created:
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53 if os.path.exists(dirname):
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54 shutil.rmtree(dirname)
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55 os.mkdir(dirname)
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56 self._test_specific_directory_created = True
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57 return dirname
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59 def temp_file_name(self, basename):
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60 """Returns the full name of the file named basename in the temp. dir.
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61 """
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62 return os.path.join(self.create_test_specific_temp_dir(), basename)
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63
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64 def create_temp_file(self, basename, contents, permissions=None):
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65 """Creates a file in the temp directory with the given contents.
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66 The optional parameter permissions should either be None (the
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67 default) or an int specifying the file permissions (same format
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68 as the second parameter of os.chmod). The method returns the
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69 absolute name of the created file.
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70 """
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71 filename = self.temp_file_name(basename)
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72 file = open(filename, "w")
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73 file.write(contents)
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74 file.close()
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75 if permissions is not None:
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76 os.chmod(filename, permissions)
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77 return filename
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78
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79 def create_temp_dir(self, basename):
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80 """Creates the directory basename in the temporary directory.
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81 The method returns the absolute name of the created directory.
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82 """
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83 dirname = self.temp_file_name(basename)
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84 os.mkdir(dirname)
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85 return dirname
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87 def create_files(self, directory, filedesc):
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88 """Creates a hierarchy of directories and files in directory.
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89 The filedesc parameter should be a sequence of (name, contents)
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90 pairs or (name, permissions, contents) triples. Each item of
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91 the sequence describes one entry of the directory. If contents
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92 is an instance of list, the entry is a subdirectory and the
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93 contents is a list in the same format as filedesc and passed
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94 recursively to the create_files method. If contents is a
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95 string, the new directory entry is a normal file and contents is
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96 the contents of the file. The permissions if present, should be
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97 an int specifying the files permissions (setting permissions
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98 doesn't work yet for directories).
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100 The method returns the absolute name of the toplevel directory
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101 created by the method.
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102 """
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103 directory = self.temp_file_name(directory)
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104 os.makedirs(directory)
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105 for item in filedesc:
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106 if len(item) == 3:
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107 name, permissions, contents = item
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108 else:
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109 name, contents = item
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110 permissions = None # use default permissions
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111 if isinstance(contents, list):
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112 # a list as contents indicates a directory
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113 self.create_files(os.path.join(directory, name), contents)
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114 else:
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115 writefile(os.path.join(directory, name), contents, permissions)
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116 return directory
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117
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118 def check_file_contents(self, filename, contents):
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119 """check the contents of a file"""
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120 self.assertEquals(open(filename).read(), contents)
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