Mercurial > hg > GlobalNeighbors
annotate tests/test_grid.py @ 25:991bce6b6881 default tip
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| author | Jeff Hammel <k0scist@gmail.com> |
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| date | Sun, 17 Sep 2017 14:35:50 -0700 |
| parents | d1b99c695511 |
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1 #!/usr/bin/env python |
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2 |
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3 """ |
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4 test that we can grid a solution |
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5 """ |
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6 |
| 1 | 7 import os |
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8 import unittest |
| 1 | 9 from common import datafile |
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10 from globalneighbors.grid import LatLonGrid |
| 1 | 11 from globalneighbors.locations import locations |
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12 from globalneighbors.read import read_cities |
| 1 | 13 from globalneighbors.read import read_city_list |
| 14 | |
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15 |
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16 class TestGrid(unittest.TestCase): |
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17 """test gridding functionality""" |
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18 |
| 1 | 19 ### test functions |
| 20 | |
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21 def test_dimensions(self): |
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22 |
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23 # make a 2 degree grid |
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24 grid = LatLonGrid(90, 180) |
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25 assert grid.n == (90, 180) |
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26 assert grid.d == (2., 2.) |
| 1 | 27 assert len(grid.grid) == 90 |
| 28 for row in grid.grid: | |
| 29 assert len(row) == 180 | |
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30 |
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31 def test_insertion(self): |
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32 |
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33 coord = (-23., 122.) |
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34 grid = LatLonGrid(3, 4) |
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35 grid.add(1234, *coord) |
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36 i, j = grid.index(*coord) |
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37 assert i == 1 |
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38 assert j == 3 |
| 1 | 39 assert grid[(i,j)] == set([1234]) |
| 40 | |
| 41 def test_sample(self): | |
| 42 | |
| 43 samplefile = datafile('sample.tsv') | |
| 44 assert os.path.exists(samplefile) | |
| 45 city_locations = locations(read_city_list(samplefile)) | |
| 46 self.grid_locations(city_locations) | |
| 47 | |
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48 def test_10000(self): |
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49 """test 10000 cities""" |
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50 |
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51 filename = datafile('10000cities.tsv') |
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52 assert os.path.exists(filename) |
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53 with open(filename) as f: |
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54 city_locations = locations(read_cities(f)) |
| 11 | 55 grid = self.grid_locations(city_locations) |
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56 |
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57 def test_neighbors(self): |
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58 """test grid neighbor indexing""" |
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59 |
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60 grid = LatLonGrid(9, 9) |
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61 |
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62 neighbors = grid.neighbors(5,5) |
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63 expected = [(4,4), (4,5), (4,6), |
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64 (5,4), (5,6), |
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65 (6,4), (6,5), (6,6)] |
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66 assert sorted(neighbors) == sorted(expected) |
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67 |
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68 |
| 1 | 69 ### generic (utility) functions |
| 70 | |
| 71 def grid_locations(self, locations): | |
| 72 """grid locations + test created grid""" | |
| 73 | |
| 3 | 74 # create a grid |
| 1 | 75 grid = LatLonGrid(8, 8) |
| 3 | 76 |
| 77 # add the items to it | |
| 1 | 78 for geoid, (lat, lon) in locations.items(): |
| 79 grid.add(geoid, lat, lon) | |
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80 |
| 3 | 81 # iterate over the grid |
| 82 n_locations = 0 | |
| 83 for i in range(grid.n[0]): | |
| 84 for j in range(grid.n[1]): | |
| 85 n_locations += len(grid[(i,j)]) | |
| 86 assert n_locations == len(locations) | |
| 87 | |
| 11 | 88 return grid |
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89 |
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90 if __name__ == '__main__': |
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91 unittest.main() |