Mercurial > hg > GlobalNeighbors

annotate tests/test_grid.py @ 6:316e1d54ffd4

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author Jeff Hammel <k0scist@gmail.com>
date Sat, 24 Jun 2017 15:47:59 -0700
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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
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7 import os
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8 import unittest
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9 from common import datafile
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10 from globalneighbors.grid import LatLonGrid
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11 from globalneighbors.locations import locations
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12 from globalneighbors.read import read_cities
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13 from globalneighbors.read import read_city_list
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16 class TestGrid(unittest.TestCase):
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17 """test gridding functionality"""
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18
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19 ### test functions
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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.)
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27 assert len(grid.grid) == 90
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28 for row in grid.grid:
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29 assert len(row) == 180
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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
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39 assert grid[(i,j)] == set([1234])
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40
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41 def test_sample(self):
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42
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43 samplefile = datafile('sample.tsv')
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44 assert os.path.exists(samplefile)
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45 city_locations = locations(read_city_list(samplefile))
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46 self.grid_locations(city_locations)
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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))
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55 self.grid_locations(city_locations)
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56
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57
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58 ### generic (utility) functions
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59
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60 def grid_locations(self, locations):
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61 """grid locations + test created grid"""
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62
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63 # create a grid
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64 grid = LatLonGrid(8, 8)
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65
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66 # add the items to it
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67 for geoid, (lat, lon) in locations.items():
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68 grid.add(geoid, lat, lon)
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70 # iterate over the grid
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71 n_locations = 0
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72 for i in range(grid.n[0]):
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73 for j in range(grid.n[1]):
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74 n_locations += len(grid[(i,j)])
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75 assert n_locations == len(locations)
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79 if __name__ == '__main__':
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80 unittest.main()