Mercurial > hg
annotate tests/test-lrucachedict.py @ 37627:cfb32979abcd
setup: add packages for concurrent.futures
We conceivably don't need to distribute this package on Python 3
since we will use the version in the standard library. However,
we want installs to be usable of multiple versions of Python. So
it is best to always have it.
Differential Revision: https://phab.mercurial-scm.org/D3265
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 09 Apr 2018 12:27:52 -0700 |
parents | 79add5a4e857 |
children | 067f7d2c7d60 |
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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 ( |
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4 util, |
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5 ) |
18603 | 6 |
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7 def printifpresent(d, xs, name='d'): |
18603 | 8 for x in xs: |
9 present = x in d | |
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10 print("'%s' in %s: %s" % (x, name, present)) |
18603 | 11 if present: |
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12 print("%s['%s']: %s" % (name, x, d[x])) |
18603 | 13 |
14 def test_lrucachedict(): | |
15 d = util.lrucachedict(4) | |
16 d['a'] = 'va' | |
17 d['b'] = 'vb' | |
18 d['c'] = 'vc' | |
19 d['d'] = 'vd' | |
20 | |
21 # all of these should be present | |
22 printifpresent(d, ['a', 'b', 'c', 'd']) | |
23 | |
24 # 'a' should be dropped because it was least recently used | |
25 d['e'] = 've' | |
26 printifpresent(d, ['a', 'b', 'c', 'd', 'e']) | |
27 | |
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28 assert d.get('a') is None |
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29 assert d.get('e') == 've' |
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30 |
18603 | 31 # touch entries in some order (get or set). |
32 d['e'] | |
33 d['c'] = 'vc2' | |
34 d['d'] | |
35 d['b'] = 'vb2' | |
36 | |
37 # 'e' should be dropped now | |
38 d['f'] = 'vf' | |
39 printifpresent(d, ['b', 'c', 'd', 'e', 'f']) | |
40 | |
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41 d.clear() |
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42 printifpresent(d, ['b', 'c', 'd', 'e', 'f']) |
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43 |
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44 # Now test dicts that aren't full. |
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45 d = util.lrucachedict(4) |
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46 d['a'] = 1 |
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47 d['b'] = 2 |
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48 d['a'] |
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49 d['b'] |
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50 printifpresent(d, ['a', 'b']) |
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51 |
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52 # test copy method |
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53 d = util.lrucachedict(4) |
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54 d['a'] = 'va3' |
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55 d['b'] = 'vb3' |
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56 d['c'] = 'vc3' |
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57 d['d'] = 'vd3' |
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58 |
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59 dc = d.copy() |
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60 |
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61 # all of these should be present |
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62 print("\nAll of these should be present:") |
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63 printifpresent(dc, ['a', 'b', 'c', 'd'], 'dc') |
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64 |
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65 # 'a' should be dropped because it was least recently used |
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66 print("\nAll of these except 'a' should be present:") |
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67 dc['e'] = 've3' |
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68 printifpresent(dc, ['a', 'b', 'c', 'd', 'e'], 'dc') |
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69 |
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70 # contents and order of original dict should remain unchanged |
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71 print("\nThese should be in reverse alphabetical order and read 'v?3':") |
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72 dc['b'] = 'vb3_new' |
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73 for k in list(iter(d)): |
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74 print("d['%s']: %s" % (k, d[k])) |
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75 |
18603 | 76 if __name__ == '__main__': |
77 test_lrucachedict() |