| 1 | """ |
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| 2 | Unit tests for data manipulations |
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| 3 | """ |
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| 4 | #TODO: what happens if you add a Data1D to a Data2D? |
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| 5 | |
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| 6 | import unittest |
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| 7 | import numpy, math |
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| 8 | from sans.dataloader.loader import Loader |
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| 9 | from sans.dataloader.data_info import Data1D, Data2D |
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| 10 | |
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| 11 | import os.path |
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| 12 | |
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| 13 | class data_info_tests(unittest.TestCase): |
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| 14 | |
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| 15 | def setUp(self): |
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| 16 | self.data = Loader().load("cansas1d.xml") |
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| 17 | |
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| 18 | def test_clone1D(self): |
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| 19 | """ |
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| 20 | Test basic cloning |
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| 21 | """ |
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| 22 | clone = self.data.clone_without_data() |
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| 23 | |
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| 24 | for i in range(len(self.data.detector)): |
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| 25 | self.assertEqual(self.data.detector[i].distance, clone.detector[i].distance) |
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| 26 | |
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| 27 | |
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| 28 | class manip_tests(unittest.TestCase): |
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| 29 | |
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| 30 | def setUp(self): |
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| 31 | # Create two data sets to play with |
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| 32 | x_0 = numpy.ones(5) |
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| 33 | for i in range(5): |
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| 34 | x_0[i] = x_0[i]*(i+1.0) |
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| 35 | |
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| 36 | y_0 = 2.0*numpy.ones(5) |
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| 37 | dy_0 = 0.5*numpy.ones(5) |
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| 38 | self.data = Data1D(x_0, y_0, dy=dy_0) |
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| 39 | |
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| 40 | x = self.data.x |
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| 41 | y = numpy.ones(5) |
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| 42 | dy = numpy.ones(5) |
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| 43 | self.data2 = Data1D(x, y, dy=dy) |
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| 44 | |
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| 45 | |
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| 46 | def test_load(self): |
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| 47 | """ |
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| 48 | Test whether the test file was loaded properly |
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| 49 | """ |
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| 50 | # There should be 5 entries in the file |
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| 51 | self.assertEqual(len(self.data.x), 5) |
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| 52 | |
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| 53 | for i in range(5): |
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| 54 | # The x values should be from 1 to 5 |
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| 55 | self.assertEqual(self.data.x[i], float(i+1)) |
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| 56 | |
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| 57 | # All y-error values should be 0.5 |
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| 58 | self.assertEqual(self.data.dy[i], 0.5) |
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| 59 | |
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| 60 | # All y values should be 2.0 |
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| 61 | self.assertEqual(self.data.y[i], 2.0) |
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| 62 | |
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| 63 | def test_add(self): |
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| 64 | result = self.data2+self.data |
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| 65 | for i in range(5): |
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| 66 | self.assertEqual(result.y[i], 3.0) |
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| 67 | self.assertEqual(result.dy[i], math.sqrt(0.5**2+1.0)) |
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| 68 | |
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| 69 | def test_sub(self): |
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| 70 | result = self.data2-self.data |
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| 71 | for i in range(5): |
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| 72 | self.assertEqual(result.y[i], -1.0) |
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| 73 | self.assertEqual(result.dy[i], math.sqrt(0.5**2+1.0)) |
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| 74 | |
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| 75 | def test_mul(self): |
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| 76 | result = self.data2*self.data |
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| 77 | for i in range(5): |
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| 78 | self.assertEqual(result.y[i], 2.0) |
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| 79 | self.assertEqual(result.dy[i], math.sqrt((0.5*1.0)**2+(1.0*2.0)**2)) |
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| 80 | |
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| 81 | def test_div(self): |
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| 82 | result = self.data2/self.data |
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| 83 | for i in range(5): |
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| 84 | self.assertEqual(result.y[i], 0.5) |
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| 85 | self.assertEqual(result.dy[i], math.sqrt((1.0/2.0)**2+(0.5*1.0/4.0)**2)) |
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| 86 | |
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| 87 | def test_radd(self): |
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| 88 | result = self.data+3.0 |
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| 89 | for i in range(5): |
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| 90 | self.assertEqual(result.y[i], 5.0) |
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| 91 | self.assertEqual(result.dy[i], 0.5) |
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| 92 | |
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| 93 | result = 3.0+self.data |
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| 94 | for i in range(5): |
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| 95 | self.assertEqual(result.y[i], 5.0) |
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| 96 | self.assertEqual(result.dy[i], 0.5) |
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| 97 | |
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| 98 | def test_rsub(self): |
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| 99 | result = self.data-3.0 |
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| 100 | for i in range(5): |
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| 101 | self.assertEqual(result.y[i], -1.0) |
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| 102 | self.assertEqual(result.dy[i], 0.5) |
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| 103 | |
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| 104 | result = 3.0-self.data |
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| 105 | for i in range(5): |
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| 106 | self.assertEqual(result.y[i], 1.0) |
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| 107 | self.assertEqual(result.dy[i], 0.5) |
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| 108 | |
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| 109 | def test_rmul(self): |
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| 110 | result = self.data*3.0 |
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| 111 | for i in range(5): |
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| 112 | self.assertEqual(result.y[i], 6.0) |
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| 113 | self.assertEqual(result.dy[i], 1.5) |
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| 114 | |
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| 115 | result = 3.0*self.data |
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| 116 | for i in range(5): |
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| 117 | self.assertEqual(result.y[i], 6.0) |
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| 118 | self.assertEqual(result.dy[i], 1.5) |
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| 119 | |
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| 120 | def test_rdiv(self): |
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| 121 | result = self.data/4.0 |
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| 122 | for i in range(5): |
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| 123 | self.assertEqual(result.y[i], 0.5) |
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| 124 | self.assertEqual(result.dy[i], 0.125) |
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| 125 | |
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| 126 | result = 6.0/self.data |
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| 127 | for i in range(5): |
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| 128 | self.assertEqual(result.y[i], 3.0) |
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| 129 | self.assertEqual(result.dy[i], 6.0*0.5/4.0) |
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| 130 | |
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| 131 | class manip_2D(unittest.TestCase): |
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| 132 | |
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| 133 | def setUp(self): |
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| 134 | # Create two data sets to play with |
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| 135 | x_0 = 2.0*numpy.ones([5,4]) |
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| 136 | dx_0 = 0.5*numpy.ones([5,4]) |
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| 137 | self.data = Data2D(x_0, dx_0) |
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| 138 | |
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| 139 | y = numpy.ones([5,4]) |
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| 140 | dy = numpy.ones([5,4]) |
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| 141 | self.data2 = Data2D(y, dy) |
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| 142 | |
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| 143 | |
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| 144 | def test_load(self): |
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| 145 | """ |
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| 146 | Test whether the test file was loaded properly |
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| 147 | """ |
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| 148 | # There should be 5 entries in the file |
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| 149 | self.assertEqual(numpy.size(self.data.data, 0), 5) |
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| 150 | self.assertEqual(numpy.size(self.data.data, 1), 4) |
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| 151 | |
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| 152 | for i in range(5): |
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| 153 | for j in range(4): |
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| 154 | # All y-error values should be 0.5 |
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| 155 | self.assertEqual(self.data.err_data[i][j], 0.5) |
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| 156 | |
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| 157 | # All y values should be 2.0 |
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| 158 | self.assertEqual(self.data.data[i][j], 2.0) |
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| 159 | |
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| 160 | def test_add(self): |
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| 161 | result = self.data2+self.data |
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| 162 | for i in range(5): |
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| 163 | for j in range(4): |
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| 164 | self.assertEqual(result.data[i][j], 3.0) |
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| 165 | self.assertEqual(result.err_data[i][j], math.sqrt(0.5**2+1.0)) |
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| 166 | |
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| 167 | def test_sub(self): |
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| 168 | result = self.data2-self.data |
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| 169 | for i in range(5): |
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| 170 | for j in range(4): |
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| 171 | self.assertEqual(result.data[i][j], -1.0) |
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| 172 | self.assertEqual(result.err_data[i][j], math.sqrt(0.5**2+1.0)) |
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| 173 | |
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| 174 | def test_mul(self): |
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| 175 | result = self.data2*self.data |
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| 176 | for i in range(5): |
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| 177 | for j in range(4): |
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| 178 | self.assertEqual(result.data[i][j], 2.0) |
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| 179 | self.assertEqual(result.err_data[i][j], math.sqrt((0.5*1.0)**2+(1.0*2.0)**2)) |
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| 180 | |
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| 181 | def test_div(self): |
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| 182 | result = self.data2/self.data |
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| 183 | for i in range(5): |
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| 184 | for j in range(4): |
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| 185 | self.assertEqual(result.data[i][j], 0.5) |
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| 186 | self.assertEqual(result.err_data[i][j], math.sqrt((1.0/2.0)**2+(0.5*1.0/4.0)**2)) |
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| 187 | |
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| 188 | def test_radd(self): |
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| 189 | result = self.data+3.0 |
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| 190 | for i in range(5): |
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| 191 | for j in range(4): |
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| 192 | self.assertEqual(result.data[i][j], 5.0) |
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| 193 | self.assertEqual(result.err_data[i][j], 0.5) |
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| 194 | |
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| 195 | result = 3.0+self.data |
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| 196 | for i in range(5): |
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| 197 | for j in range(4): |
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| 198 | self.assertEqual(result.data[i][j], 5.0) |
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| 199 | self.assertEqual(result.err_data[i][j], 0.5) |
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| 200 | |
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| 201 | def test_rsub(self): |
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| 202 | result = self.data-3.0 |
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| 203 | for i in range(5): |
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| 204 | for j in range(4): |
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| 205 | self.assertEqual(result.data[i][j], -1.0) |
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| 206 | self.assertEqual(result.err_data[i][j], 0.5) |
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| 207 | |
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| 208 | result = 3.0-self.data |
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| 209 | for i in range(5): |
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| 210 | for j in range(4): |
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| 211 | self.assertEqual(result.data[i][j], 1.0) |
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| 212 | self.assertEqual(result.err_data[i][j], 0.5) |
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| 213 | |
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| 214 | def test_rmul(self): |
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| 215 | result = self.data*3.0 |
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| 216 | for i in range(5): |
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| 217 | for j in range(4): |
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| 218 | self.assertEqual(result.data[i][j], 6.0) |
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| 219 | self.assertEqual(result.err_data[i][j], 1.5) |
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| 220 | |
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| 221 | result = 3.0*self.data |
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| 222 | for i in range(5): |
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| 223 | for j in range(4): |
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| 224 | self.assertEqual(result.data[i][j], 6.0) |
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| 225 | self.assertEqual(result.err_data[i][j], 1.5) |
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| 226 | |
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| 227 | def test_rdiv(self): |
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| 228 | result = self.data/4.0 |
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| 229 | for i in range(5): |
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| 230 | for j in range(4): |
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| 231 | self.assertEqual(result.data[i][j], 0.5) |
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| 232 | self.assertEqual(result.err_data[i][j], 0.125) |
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| 233 | |
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| 234 | result = 6.0/self.data |
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| 235 | for i in range(5): |
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| 236 | for j in range(4): |
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| 237 | self.assertEqual(result.data[i][j], 3.0) |
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| 238 | self.assertEqual(result.err_data[i][j], 6.0*0.5/4.0) |
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| 239 | |
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| 240 | |
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| 241 | if __name__ == '__main__': |
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| 242 | unittest.main() |
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| 243 | |
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