annotate tests/generate-working-copy-states.py @ 26345:2aa0dde846b4

mq: remove a mutable default argument Mutable default arguments are know to the state of California to cause bugs. The underlying function already handle "None" as an option value, so we do not need to do anything else.
author Pierre-Yves David <pierre-yves.david@fb.com>
date Thu, 24 Sep 2015 00:50:06 -0700
parents 3849b89459b0
children a327a24acfea
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Helper script used for generating history and working copy files and content.
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2 # The file's name corresponds to its history. The number of changesets can
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3 # be specified on the command line. With 2 changesets, files with names like
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4 # content1_content2_content1-untracked are generated. The first two filename
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5 # segments describe the contents in the two changesets. The third segment
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6 # ("content1-untracked") describes the state in the working copy, i.e.
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7 # the file has content "content1" and is untracked (since it was previously
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8 # tracked, it has been forgotten).
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9 #
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10 # This script generates the filenames and their content, but it's up to the
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11 # caller to tell hg about the state.
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12 #
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13 # There are two subcommands:
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14 # filelist <numchangesets>
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15 # state <numchangesets> (<changeset>|wc)
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16 #
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17 # Typical usage:
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18 #
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19 # $ python $TESTDIR/generate-working-copy-states.py state 2 1
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20 # $ hg addremove --similarity 0
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21 # $ hg commit -m 'first'
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22 #
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23 # $ python $TESTDIR/generate-working-copy-states.py state 2 1
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24 # $ hg addremove --similarity 0
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25 # $ hg commit -m 'second'
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26 #
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27 # $ python $TESTDIR/generate-working-copy-states.py state 2 wc
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28 # $ hg addremove --similarity 0
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29 # $ hg forget *_*_*-untracked
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30 # $ rm *_*_missing-*
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31
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32 import sys
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33 import os
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34
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35 # Generates pairs of (filename, contents), where 'contents' is a list
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36 # describing the file's content at each revision (or in the working copy).
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37 # At each revision, it is either None or the file's actual content. When not
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38 # None, it may be either new content or the same content as an earlier
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39 # revisions, so all of (modified,clean,added,removed) can be tested.
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40 def generatestates(maxchangesets, parentcontents):
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41 depth = len(parentcontents)
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42 if depth == maxchangesets + 1:
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43 for tracked in ('untracked', 'tracked'):
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44 filename = "_".join([(content is None and 'missing' or content) for
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45 content in parentcontents]) + "-" + tracked
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46 yield (filename, parentcontents)
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47 else:
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48 for content in (set([None, 'content' + str(depth + 1)]) |
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49 set(parentcontents)):
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50 for combination in generatestates(maxchangesets,
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51 parentcontents + [content]):
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52 yield combination
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53
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54 # retrieve the command line arguments
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55 target = sys.argv[1]
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56 maxchangesets = int(sys.argv[2])
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57 if target == 'state':
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58 depth = sys.argv[3]
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59
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60 # sort to make sure we have stable output
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61 combinations = sorted(generatestates(maxchangesets, []))
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62
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63 # compute file content
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64 content = []
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65 for filename, states in combinations:
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66 if target == 'filelist':
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67 print filename
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68 elif target == 'state':
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69 if depth == 'wc':
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70 # Make sure there is content so the file gets written and can be
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71 # tracked. It will be deleted outside of this script.
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72 content.append((filename, states[maxchangesets] or 'TOBEDELETED'))
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73 else:
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74 content.append((filename, states[int(depth) - 1]))
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75 else:
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76 print >> sys.stderr, "unknown target:", target
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77 sys.exit(1)
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78
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79 # write actual content
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80 for filename, data in content:
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81 if data is not None:
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82 f = open(filename, 'wb')
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83 f.write(data + '\n')
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84 f.close()
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85 elif os.path.exists(filename):
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86 os.remove(filename)