Mercurial > hg
annotate tests/test-extensions-wrapfunction.py @ 36091:ea02be8665ef
narrowtemplates: update to use registrar mechanism
It's worth considering at this point if we should just move the two
ellipsis functions to core tagged experimental or something, since
they're not really narrowing-specific...
Differential Revision: https://phab.mercurial-scm.org/D2009
author | Augie Fackler <augie@google.com> |
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date | Fri, 02 Feb 2018 10:51:47 -0500 |
parents | 82bd4c5a81e5 |
children | ac865f020b99 |
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1 from __future__ import absolute_import, print_function |
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2 |
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3 from mercurial import extensions |
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4 |
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5 def genwrapper(x): |
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6 def f(orig, *args, **kwds): |
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7 return [x] + orig(*args, **kwds) |
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8 f.x = x |
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9 return f |
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10 |
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11 def getid(wrapper): |
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12 return getattr(wrapper, 'x', '-') |
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13 |
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14 wrappers = [genwrapper(i) for i in range(5)] |
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15 |
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16 class dummyclass(object): |
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17 def getstack(self): |
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18 return ['orig'] |
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19 |
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20 dummy = dummyclass() |
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21 |
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22 def batchwrap(wrappers): |
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23 for w in wrappers: |
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24 extensions.wrapfunction(dummy, 'getstack', w) |
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25 print('wrap %d: %s' % (getid(w), dummy.getstack())) |
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26 |
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27 def batchunwrap(wrappers): |
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28 for w in wrappers: |
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29 result = None |
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30 try: |
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31 result = extensions.unwrapfunction(dummy, 'getstack', w) |
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32 msg = str(dummy.getstack()) |
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33 except (ValueError, IndexError) as e: |
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34 msg = e.__class__.__name__ |
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35 print('unwrap %s: %s: %s' % (getid(w), getid(result), msg)) |
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36 |
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37 batchwrap(wrappers + [wrappers[0]]) |
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38 batchunwrap([(wrappers[i] if i >= 0 else None) |
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39 for i in [3, None, 0, 4, 0, 2, 1, None]]) |
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40 |
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41 wrap0 = extensions.wrappedfunction(dummy, 'getstack', wrappers[0]) |
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42 wrap1 = extensions.wrappedfunction(dummy, 'getstack', wrappers[1]) |
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43 |
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44 # Use them in a different order from how they were created to check that |
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45 # the wrapping happens in __enter__, not in __init__ |
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46 print('context manager', dummy.getstack()) |
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47 with wrap1: |
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48 print('context manager', dummy.getstack()) |
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49 with wrap0: |
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50 print('context manager', dummy.getstack()) |
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51 # Bad programmer forgets to unwrap the function, but the context |
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52 # managers still unwrap their wrappings. |
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53 extensions.wrapfunction(dummy, 'getstack', wrappers[2]) |
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54 print('context manager', dummy.getstack()) |
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55 print('context manager', dummy.getstack()) |
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56 print('context manager', dummy.getstack()) |
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57 |
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58 # Wrap callable object which has no __name__ |
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59 class callableobj(object): |
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60 def __call__(self): |
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61 return ['orig'] |
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62 dummy.cobj = callableobj() |
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63 extensions.wrapfunction(dummy, 'cobj', wrappers[0]) |
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64 print('wrap callable object', dummy.cobj()) |