Mercurial > treepkg

annotate test/filesupport.py @ 113:312949e7628d

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Add a smarter way to load the packager modules: Add the function treepkg.packager.import_packager_module and use it to load the packager modules. Also add corresponding tests.
author Bernhard Herzog <bh@intevation.de>
date Tue, 01 Apr 2008 12:30:39 +0000
parents 7f6fb8103db0
children 007d7f2aa184
rev   line source
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98a7d70746a9 Make BinaryPackager remove all files that do not belong to the binary
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1 # Copyright (C) 2007 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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14
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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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32
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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 files in the temporary directory
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37 """
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38
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39 def temp_file_name(self, basename, remove=False):
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40 """Returns the full name of the file named basename in the temp. dir.
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41 If the remove parameter is true, the file is removed if already exists.
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42 """
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43 filename = os.path.join(create_temp_dir(), basename)
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44 if remove and os.path.exists(filename):
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45 os.remove(filename)
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46 return filename
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47
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48 def create_temp_file(self, basename, contents, mode = None):
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49 """Creates a file in the temp directory with the given contents.
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50 The optional parameter mode should either be None (the default)
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51 or an int specifying the file permissions (same format as the
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52 second parameter of os.chmod). The method returns the absolute
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53 name of the created file.
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54 """
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55 filename = self.temp_file_name(basename)
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56 file = open(filename, "w")
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57 file.write(contents)
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58 file.close()
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59 if mode is not None:
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60 os.chmod(filename, mode)
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61 return filename
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62
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63 def create_temp_dir(self, basename, remove=True):
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64 """Creates the directory basename in the temporary directory.
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65 If the optional parameter remove is true (the default), the
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66 directory and all its contents are deleted with shutil.rmtree.
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67 The method returns the absolute name of the created directory.
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68 """
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69 dirname = os.path.join(create_temp_dir(), basename)
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70 if remove and os.path.exists(dirname):
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71 shutil.rmtree(dirname)
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72 os.mkdir(dirname)
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73 return dirname
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74
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75 def create_files(self, directory, filedesc):
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76 """Creates a hieararchy of directories and files in directory.
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77 The filedesc parameter should be a sequence of (name, contents)
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78 pairs. Each pair describes one entry of the directory. If
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79 contents is an instance of list, the entry is a subdirectory and
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80 the contents is a list in the same format as filedesc and passed
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81 recursively to the create_files method. If contents is a
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82 string, the new directory entry is a normal file and contents is
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83 the contents of the file.
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84 """
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85 for name, contents in filedesc:
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86 if isinstance(contents, list):
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87 # a list as contents indicates a directory
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88 newdir = os.path.join(directory, name)
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89 os.mkdir(newdir)
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90 self.create_files(newdir, contents)
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91 else:
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92 writefile(os.path.join(directory, name), contents)
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93
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94 def checkFileContents(self, filename, contents):
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95 """check the contents of a file"""
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96 self.assertEquals(open(filename).read(), contents)
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