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annotate tests/doctest.txt @ 50:d837f2031715

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notes
author Jeff Hammel <jhammel@mozilla.com>
date Fri, 03 May 2013 09:25:49 -0700
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1 Test WSGraph
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2 ============
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3
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4 The obligatory imports:
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5
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6 >>> from wsgraph.model import MemoryCache
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7
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8 Make a graph:
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9
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10 >>> graph = MemoryCache()
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11
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12 The graph starts off empty:
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13
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14 >>> graph() == {'nodes': {}, 'edges': {}}
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15 True
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16 >>> graph.nodes()
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17 []
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18 >>> graph.edges()
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19 []
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20 >>> graph.node('A') is None
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21 True
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22 >>> graph['A'] is None
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23 True
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24 >>> graph.edge('A', 'B') is None
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25 True
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26 >>> graph[('A', 'B')] is None
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27 True
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28 >>> 'A' in graph
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29 False
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30 >>> ('A', 'B') in graph
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31 False
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32
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33 Let's add stuff to it:
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34
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35 >>> nodeA = {'hello': "is it me you're looking for?"}
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36 >>> graph['A'] = nodeA
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37 >>> graph.edge('A', 'B', dict(foo='bar'))
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38 >>> 'A' in graph
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39 True
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40 >>> graph['A'] == nodeA
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41 True
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42 >>> ['A', 'B'] in graph
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43 True
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44 >>> graph[('A', 'C')] = {'why': "this will add 'C' to the graph"}
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45 >>> 'C' in graph
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46 True
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47 >>> graph['C']
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48 {}
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49 >>> sorted(graph.nodes())
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50 ['A', 'B', 'C']
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51
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52 Once you set the value of a node or edge, modifying their data
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53 structure will not affect the graph results:
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54
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55 >>> values = {'a': 'b', 'c': 'easy as 1..2..3..'}
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56 >>> graph['C'] = values
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57 >>> graph.node('C') == values
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58 True
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59 >>> values['c'] = 'modifying the values'
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60 >>> values['d'] = 'adding a new key'
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61 >>> graph['C']['c']
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62 'easy as 1..2..3..'
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63 >>> 'd' in graph['C']
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64 False
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65
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66 Delete an edge:
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67
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68 >>> graph = MemoryCache()
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69 >>> graph[('a', 'b')] = {'key': 'value'}
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70 >>> graph.edges()
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71 [('a', 'b')]
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72 >>> del graph[('a', 'b')]
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73 >>> graph.edges()
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74 []
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75