Mercurial > hg
annotate tests/test-update-names.t @ 30435:b86a448a2965
zstd: vendor python-zstandard 0.5.0
As the commit message for the previous changeset says, we wish
for zstd to be a 1st class citizen in Mercurial. To make that
happen, we need to enable Python to talk to the zstd C API. And
that requires bindings.
This commit vendors a copy of existing Python bindings. Why do we
need to vendor? As the commit message of the previous commit says,
relying on systems in the wild to have the bindings or zstd present
is a losing proposition. By distributing the zstd and bindings with
Mercurial, we significantly increase our chances that zstd will
work. Since zstd will deliver a better end-user experience by
achieving better performance, this benefits our users. Another
reason is that the Python bindings still aren't stable and the
API is somewhat fluid. While Mercurial could be coded to target
multiple versions of the Python bindings, it is safer to bundle
an explicit, known working version.
The added Python bindings are mostly a fully-featured interface
to the zstd C API. They allow one-shot operations, streaming,
reading and writing from objects implements the file object
protocol, dictionary compression, control over low-level compression
parameters, and more. The Python bindings work on Python 2.6,
2.7, and 3.3+ and have been tested on Linux and Windows. There are
CFFI bindings, but they are lacking compared to the C extension.
Upstream work will be needed before we can support zstd with PyPy.
But it will be possible.
The files added in this commit come from Git commit
e637c1b214d5f869cf8116c550dcae23ec13b677 from
https://github.com/indygreg/python-zstandard and are added without
modifications. Some files from the upstream repository have been
omitted, namely files related to continuous integration.
In the spirit of full disclosure, I'm the maintainer of the
"python-zstandard" project and have authored 100% of the code
added in this commit. Unfortunately, the Python bindings have
not been formally code reviewed by anyone. While I've tested
much of the code thoroughly (I even have tests that fuzz APIs),
there's a good chance there are bugs, memory leaks, not well
thought out APIs, etc. If someone wants to review the code and
send feedback to the GitHub project, it would be greatly
appreciated.
Despite my involvement with both projects, my opinions of code
style differ from Mercurial's. The code in this commit introduces
numerous code style violations in Mercurial's linters. So, the code
is excluded from most lints. However, some violations I agree with.
These have been added to the known violations ignore list for now.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Thu, 10 Nov 2016 22:15:58 -0800 |
parents | 46a0203dfb89 |
children | 79d98e1b21a7 |
rev | line source |
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1 Test update logic when there are renames or weird same-name cases between dirs |
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2 and files |
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4 Update with local changes across a file rename |
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5 |
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6 $ hg init r1 && cd r1 |
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7 |
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8 $ echo a > a |
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9 $ hg add a |
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10 $ hg ci -m a |
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11 |
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12 $ hg mv a b |
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13 $ hg ci -m rename |
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14 |
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15 $ echo b > b |
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16 $ hg ci -m change |
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17 |
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18 $ hg up -q 0 |
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19 |
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20 $ echo c > a |
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21 |
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22 $ hg up |
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23 merging a and b to b |
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24 warning: conflicts while merging b! (edit, then use 'hg resolve --mark') |
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25 0 files updated, 0 files merged, 0 files removed, 1 files unresolved |
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26 use 'hg resolve' to retry unresolved file merges |
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27 [1] |
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28 |
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29 Test update when local untracked directory exists with the same name as a |
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30 tracked file in a commit we are updating to |
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31 $ hg init r2 && cd r2 |
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32 $ echo root > root && hg ci -Am root # rev 0 |
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33 adding root |
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34 $ echo text > name && hg ci -Am "name is a file" # rev 1 |
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35 adding name |
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36 $ hg up 0 |
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37 0 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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38 $ mkdir name |
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39 $ hg up 1 |
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40 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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41 |
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42 Test update when local untracked directory exists with some files in it and has |
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43 the same name a tracked file in a commit we are updating to. In future this |
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44 should be updated to give an friendlier error message, but now we should just |
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45 make sure that this does not erase untracked data |
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46 $ hg up 0 |
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47 0 files updated, 0 files merged, 1 files removed, 0 files unresolved |
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48 $ mkdir name |
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49 $ echo text > name/file |
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50 $ hg st |
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51 ? name/file |
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52 $ hg up 1 |
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53 abort: *: '$TESTTMP/r1/r2/name' (glob) |
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54 [255] |
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55 $ cd .. |
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56 |
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57 #if symlink |
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58 |
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59 Test update when two commits have symlinks that point to different folders |
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60 $ hg init r3 && cd r3 |
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61 $ echo root > root && hg ci -Am root |
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62 adding root |
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63 $ mkdir folder1 && mkdir folder2 |
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64 $ ln -s folder1 folder |
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65 $ hg ci -Am "symlink to folder1" |
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66 adding folder |
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67 $ rm folder |
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68 $ ln -s folder2 folder |
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69 $ hg ci -Am "symlink to folder2" |
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70 $ hg up 1 |
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71 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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72 $ cd .. |
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73 |
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74 #endif |
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75 |
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76 #if rmcwd |
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77 |
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78 Test that warning is printed if cwd is deleted during update |
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79 $ hg init r4 && cd r4 |
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80 $ mkdir dir |
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81 $ cd dir |
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82 $ echo a > a |
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83 $ echo b > b |
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84 $ hg add a b |
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85 $ hg ci -m "file and dir" |
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86 $ hg up -q null |
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87 current directory was removed |
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88 (consider changing to repo root: $TESTTMP/r1/r4) |
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89 |
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90 #endif |