1 | import unittest |
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2 | import numpy |
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3 | |
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4 | from copy import deepcopy |
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5 | |
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6 | from anuga.caching import * |
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7 | from anuga.caching.dummy_classes_for_testing import Dummy, Dummy_memorytest |
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8 | |
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9 | |
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10 | # Define a test function to be cached |
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11 | # |
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12 | def f(a,b,c,N,x=0,y='abcdefg'): |
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13 | """f(a,b,c,N) |
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14 | Do something time consuming and produce a complex result. |
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15 | """ |
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16 | |
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17 | import string |
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18 | |
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19 | B = [] |
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20 | for n in range(N): |
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21 | s = str(n+2.0/(n + 4.0))+'.a'*10 |
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22 | B.append((a,b,c,s,n,x,y)) |
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23 | return(B) |
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24 | |
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25 | def f_numeric(A, B): |
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26 | """Operation on Numeric arrays |
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27 | """ |
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28 | |
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29 | return 3.1*A + B + 1 |
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30 | |
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31 | |
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32 | def f_object(A, B): |
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33 | """Operation of objecs of class Dummy |
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34 | """ |
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35 | |
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36 | return A.value+B.value, A.another+B.another |
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37 | |
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38 | |
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39 | def f_generic(A): |
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40 | return A |
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41 | |
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42 | def clear_and_create_cache(Dummy, verbose=False): |
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43 | |
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44 | a = cache(Dummy, 'clear', verbose=verbose) |
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45 | a = cache(Dummy, args=(9,10), |
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46 | verbose=verbose) |
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47 | |
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48 | |
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49 | def retrieve_cache(Dummy, verbose=False): |
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50 | if verbose: print 'Check that cache is there' |
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51 | |
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52 | X = cache(Dummy, args=(9,10), test=1, |
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53 | verbose=verbose) |
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54 | |
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55 | msg = 'Cached value was not found' |
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56 | assert X is not None, msg |
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57 | |
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58 | |
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59 | |
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60 | |
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61 | |
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62 | class Test_Caching(unittest.TestCase): |
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63 | def setUp(self): |
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64 | set_option('verbose', 0) #Why |
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65 | |
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66 | pass |
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67 | |
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68 | def tearDown(self): |
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69 | pass |
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70 | |
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71 | def test_simple(self): |
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72 | """Check set_option (and switch stats off) |
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73 | """ |
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74 | |
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75 | set_option('savestat', 0) |
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76 | assert options['savestat'] == 0 |
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77 | set_option('verbose', 0) |
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78 | assert options['verbose'] == 0 |
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79 | |
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80 | |
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81 | def test_basic_caching(self): |
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82 | |
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83 | verbose=False |
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84 | # Make some test input arguments |
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85 | # |
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86 | N = 5000 #Make N fairly small here |
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87 | |
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88 | a = [1,2] |
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89 | b = ('Thou shalt count the number three',4) |
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90 | c = {'Five is right out': 6, (7,8): 9} |
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91 | x = 3 |
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92 | y = 'holy hand granate' |
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93 | |
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94 | # Test caching |
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95 | # |
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96 | |
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97 | comprange = 2 |
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98 | |
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99 | for comp in range(comprange): |
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100 | |
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101 | # Evaluate and store |
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102 | # |
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103 | T1 = cache(f, (a,b,c,N), {'x':x, 'y':y}, evaluate=1, \ |
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104 | compression=comp, verbose=verbose) |
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105 | |
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106 | # Retrieve |
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107 | # |
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108 | T2 = cache(f, (a,b,c,N), {'x':x, 'y':y}, compression=comp) |
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109 | |
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110 | # Reference result |
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111 | # |
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112 | T3 = f(a,b,c,N,x=x,y=y) # Compute without caching |
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113 | |
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114 | |
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115 | assert T1 == T2, 'Cached result does not match computed result' |
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116 | assert T2 == T3, 'Cached result does not match computed result' |
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117 | |
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118 | |
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119 | |
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120 | def test_caching_of_numeric_arrays(self): |
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121 | """test_caching_of_numeric_arrays |
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122 | |
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123 | Test that Numeric arrays can be recognised by caching even if their id's are different |
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124 | """ |
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125 | |
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126 | verbose = False |
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127 | |
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128 | # Make some test input arguments |
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129 | A0 = numpy.arange(5) |
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130 | B0 = numpy.array([1.1, 2.2, 0.0, -5, -5]) |
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131 | |
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132 | A1 = A0.copy() |
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133 | B1 = B0.copy() |
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134 | |
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135 | # Check that their ids are different |
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136 | assert id(A0) != id(A1) |
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137 | assert id(B0) != id(B1) |
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138 | |
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139 | |
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140 | # Test caching |
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141 | comprange = 2 |
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142 | for comp in range(comprange): |
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143 | |
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144 | # Evaluate and store |
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145 | T1 = cache(f_numeric, (A0, B0), evaluate=1, |
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146 | compression=comp, verbose=verbose) |
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147 | |
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148 | # Retrieve |
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149 | T2 = cache(f_numeric, (A1, B1), |
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150 | compression=comp, test=1, verbose=verbose) |
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151 | |
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152 | # Check for presence of cached result |
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153 | msg = 'Different array objects with same contents were not recognised' |
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154 | assert T2 is not None, msg |
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155 | |
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156 | # Reference result |
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157 | T3 = f_numeric(A0, B0) # Compute without caching |
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158 | |
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159 | |
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160 | assert numpy.alltrue(T1 == T2), 'Cached result does not match computed result' |
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161 | assert numpy.alltrue(T2 == T3), 'Cached result does not match computed result' |
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162 | |
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163 | |
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164 | def test_hash_collision(self): |
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165 | """test_hash_collision(self): |
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166 | |
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167 | Test that hash collisons are dealt with correctly |
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168 | """ |
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169 | |
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170 | verbose = False |
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171 | |
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172 | # Make test input arguments |
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173 | A0 = numpy.arange(5)*1.0 |
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174 | B = ('x', 15) |
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175 | |
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176 | # Create different A that hashes to the same address (having the same average) |
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177 | A1 = numpy.array([2.0, 2.0, 2.0, 2.0, 2.0]) |
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178 | |
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179 | assert myhash(A0) == myhash(A1) |
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180 | |
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181 | |
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182 | # Test caching |
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183 | comprange = 2 |
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184 | for comp in range(comprange): |
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185 | |
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186 | # Clear |
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187 | cache(f_numeric, (A0, A0), clear=1, |
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188 | compression=comp, verbose=verbose) |
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189 | cache(f_numeric, (A1, A1), clear=1, |
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190 | compression=comp, verbose=verbose) |
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191 | |
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192 | |
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193 | # Evaluate and store |
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194 | T1 = cache(f_numeric, (A0, A0), evaluate=1, |
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195 | compression=comp, verbose=verbose) |
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196 | |
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197 | |
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198 | # Check that A1 doesn't trigger retrieval of the previous result |
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199 | # even though it hashes to the same address |
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200 | T2 = cache(f_numeric, (A1, A1), |
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201 | compression=comp, verbose=verbose) |
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202 | |
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203 | |
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204 | print 'T1=%s' % str(T1) |
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205 | print 'T2=%s' % str(T2) |
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206 | assert numpy.alltrue(T2 != T1) |
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207 | |
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208 | |
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209 | |
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210 | |
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211 | |
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212 | def test_caching_of_dictionaries(self): |
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213 | """test_caching_of_dictionaries |
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214 | |
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215 | Real example from ANUGA that caused some |
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216 | hashing problems |
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217 | """ |
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218 | |
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219 | |
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220 | verbose = False #True |
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221 | |
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222 | D = {'point_attributes': None, |
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223 | 'use_cache': True, |
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224 | 'vertex_coordinates': None, |
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225 | 'verbose': True, |
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226 | 'max_read_lines': 500, |
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227 | 'acceptable_overshoot': 1.01, |
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228 | 'mesh': None, |
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229 | 'data_origin': None, |
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230 | 'alpha': 0.02, |
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231 | 'mesh_origin': None, |
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232 | 'attribute_name': None, |
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233 | 'triangles': None} |
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234 | |
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235 | DD = deepcopy(D) # Mangles the dictionary ordering |
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236 | |
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237 | assert myhash(DD) == myhash(D) |
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238 | |
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239 | # Also test caching now that we are at it |
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240 | comprange = 2 |
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241 | for comp in range(comprange): |
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242 | |
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243 | # Evaluate and store using D |
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244 | T1 = cache(f_generic, D, evaluate=1, |
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245 | compression=comp, verbose=verbose) |
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246 | |
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247 | # Retrieve using copy (DD) |
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248 | T2 = cache(f_generic, DD, |
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249 | compression=comp, test=1, verbose=verbose) |
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250 | |
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251 | # Check for presence of cached result |
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252 | msg = 'Cached object was not found' |
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253 | assert T2 is not None, msg |
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254 | |
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255 | # Reference result |
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256 | T3 = f_generic(D) # Compute without caching |
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257 | |
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258 | |
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259 | msg = 'Cached result does not match computed result' |
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260 | |
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261 | # Compare dictionaries |
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262 | for key in T1: |
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263 | assert T1[key] == T2[key] |
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264 | assert T2[key] == T3[key] |
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265 | |
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266 | |
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267 | |
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268 | |
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269 | |
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270 | def test_caching_of_objects(self): |
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271 | """test_caching_of_objects |
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272 | |
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273 | Test that Objecs can be recognised as input variabelse |
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274 | by caching even if their id's are different |
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275 | """ |
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276 | |
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277 | |
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278 | verbose = False |
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279 | |
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280 | # Make some test input arguments |
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281 | A0 = Dummy(5, 7) |
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282 | B0 = Dummy(2.2, -5) |
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283 | |
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284 | A0.new_attribute = 'x' |
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285 | B0.new_attribute = 'x' |
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286 | |
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287 | A1 = deepcopy(A0) |
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288 | B1 = deepcopy(B0) |
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289 | |
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290 | # Check that their ids are different |
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291 | assert id(A0) != id(A1) |
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292 | assert id(B0) != id(B1) |
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293 | |
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294 | |
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295 | # Test caching |
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296 | comprange = 2 |
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297 | for comp in range(comprange): |
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298 | |
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299 | # Evaluate and store |
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300 | T1 = cache(f_object, (A0, B0), evaluate=1, |
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301 | compression=comp, verbose=verbose) |
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302 | |
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303 | # Retrieve |
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304 | T2 = cache(f_object, (A1, B1), |
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305 | compression=comp, |
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306 | test=1, |
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307 | verbose=verbose) |
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308 | |
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309 | # Check for presence of cached result |
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310 | msg = 'Different objects with same attributes were not recognised' |
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311 | assert T2 is not None, msg |
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312 | |
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313 | # Reference result |
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314 | T3 = f_object(A0, B0) # Compute without caching |
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315 | |
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316 | |
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317 | assert T1 == T2, 'Cached result does not match computed result' |
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318 | assert T2 == T3, 'Cached result does not match computed result' |
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319 | |
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320 | |
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321 | def test_caching_of_circular_structures(self): |
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322 | """test_caching_of_circular_structures |
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323 | |
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324 | Test that Caching doesn't recurse infinitely in case of |
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325 | circular or self-referencing structures |
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326 | """ |
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327 | |
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328 | verbose = False |
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329 | |
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330 | # Create input argument |
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331 | A = Dummy(5, 7) |
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332 | B = {'x': 10, 'A': A} |
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333 | C = [B, 15] |
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334 | A.value = C # Make it circular |
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335 | A.x = [1,2,C,5,A] # More circular and self referential |
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336 | |
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337 | AA = deepcopy(A) |
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338 | |
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339 | # Test caching |
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340 | comprange = 2 |
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341 | for comp in range(comprange): |
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342 | |
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343 | # Evaluate and store |
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344 | T1 = cache(f_generic, A, |
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345 | evaluate=1, |
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346 | compression=comp, verbose=verbose) |
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347 | |
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348 | # Retrieve |
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349 | T2 = cache(f_generic, AA, |
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350 | compression=comp, |
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351 | test=1, verbose=verbose) |
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352 | |
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353 | # Check for presence of cached result |
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354 | msg = 'Cached object was not found' |
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355 | assert T2 is not None, msg |
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356 | |
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357 | # Reference result |
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358 | T3 = f_generic(A) # Compute without caching |
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359 | |
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360 | |
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361 | msg = 'Cached result does not match computed result' |
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362 | assert str(T1) == str(T2), msg |
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363 | assert str(T2) == str(T3), msg |
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364 | |
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365 | |
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366 | def Xtest_caching_of_complex_circular_structure(self): |
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367 | """test_caching_of_complex_circular_structure |
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368 | |
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369 | Test that Caching can handle a realistic |
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370 | complex structure. This one is inspired by |
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371 | ANUGA's Okushiri example, although reduced in size. |
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372 | """ |
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373 | |
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374 | pass |
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375 | |
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376 | |
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377 | def test_uniqueness_of_hash_values(self): |
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378 | """test_uniqueness_of_hash_values(self): |
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379 | |
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380 | Test that Caching can handle a realistic |
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381 | complex structure by hashing it consistently and |
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382 | uniquely. |
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383 | """ |
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384 | |
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385 | verbose = False |
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386 | |
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387 | # Create input argument |
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388 | A = Dummy(5, 7) |
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389 | B = {'x': 10, 'A': A} |
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390 | C = [B, numpy.array([1.2, 3, 5, 0.1])] |
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391 | A.value = C # Make it circular |
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392 | |
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393 | # Create identical but separate object |
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394 | AA = Dummy(None, None) |
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395 | BB = {'A': AA, 'x': 10} |
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396 | CC = [BB, numpy.array([1.200, 3.000, 5.00, 1.0/10])] |
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397 | AA.value = CC # Make it circular |
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398 | AA.another = 3+4 |
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399 | |
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400 | |
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401 | assert myhash(A) == myhash(AA) |
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402 | |
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403 | |
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404 | |
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405 | # Also test caching now that we are at it |
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406 | comprange = 2 |
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407 | for comp in range(comprange): |
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408 | |
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409 | # Evaluate and store using A |
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410 | T1 = cache(f_generic, A, evaluate=1, |
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411 | compression=comp, verbose=verbose) |
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412 | |
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413 | # Retrieve using copy (AA) |
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414 | T2 = cache(f_generic, AA, |
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415 | compression=comp, test=1, verbose=verbose) |
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416 | |
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417 | # Check for presence of cached result |
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418 | msg = 'Cached object was not found' |
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419 | assert T2 is not None, msg |
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420 | |
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421 | # Reference result |
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422 | T3 = f_generic(A) # Compute without caching |
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423 | |
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424 | |
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425 | msg = 'Cached result does not match computed result' |
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426 | assert str(T1) == str(T2), msg |
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427 | assert str(T2) == str(T3), msg |
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428 | |
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429 | |
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430 | |
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431 | def test_caching_of_simple_circular_dictionaries(self): |
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432 | """test_caching_of_circular_structures |
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433 | |
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434 | Test that Caching doesn't recurse infinitely in case of |
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435 | circular or self-referencing structures |
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436 | """ |
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437 | |
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438 | verbose = False #True |
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439 | |
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440 | # Create input argument |
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441 | A = {'x': 10, 'B': None} |
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442 | B = [A, 15] |
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443 | A['B'] = B # Make it circular |
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444 | |
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445 | # Test caching |
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446 | comprange = 2 |
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447 | for comp in range(comprange): |
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448 | |
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449 | # Evaluate and store |
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450 | T1 = cache(f_generic, A, evaluate=1, |
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451 | compression=comp, verbose=verbose) |
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452 | |
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453 | |
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454 | # Retrieve |
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455 | T2 = cache(f_generic, A, |
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456 | compression=comp, test=1, verbose=verbose) |
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457 | |
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458 | # Check for presence of cached result |
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459 | msg = 'Cached object was not found' |
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460 | assert T2 is not None, msg |
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461 | |
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462 | # Reference result |
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463 | T3 = f_generic(A) # Compute without caching |
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464 | |
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465 | |
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466 | msg = 'Cached result does not match computed result' |
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467 | assert str(T1) == str(T2), msg |
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468 | assert str(T2) == str(T3), msg |
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469 | |
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470 | |
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471 | |
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472 | def test_cachefiles(self): |
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473 | """Test existence of cachefiles |
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474 | """ |
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475 | N = 5000 #Make N fairly small here |
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476 | |
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477 | a = [1,2] |
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478 | b = ('Thou shalt count the number three',4) |
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479 | c = {'Five is right out': 6, (7,8): 9} |
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480 | x = 3 |
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481 | y = 'holy hand granate' |
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482 | |
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483 | |
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484 | FN = cache(f,(a,b,c,N), {'x':x, 'y':y}, verbose=0, \ |
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485 | return_filename = 1) |
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486 | |
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487 | |
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488 | assert FN[:2] == 'f[' |
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489 | |
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490 | CD = checkdir(cachedir) |
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491 | compression = 1 |
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492 | |
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493 | (datafile,compressed0) = myopen(CD+FN+'_'+file_types[0],"rb",compression) |
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494 | (argsfile,compressed1) = myopen(CD+FN+'_'+file_types[1],"rb",compression) |
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495 | (admfile,compressed2) = myopen(CD+FN+'_'+file_types[2],"rb",compression) |
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496 | |
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497 | datafile.close() |
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498 | argsfile.close() |
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499 | admfile.close() |
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500 | |
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501 | def test_test(self): |
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502 | """Test 'test' function when cache is present |
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503 | """ |
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504 | |
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505 | verbose = False |
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506 | |
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507 | N = 5 |
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508 | |
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509 | a = [1,2] |
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510 | b = ('Thou shalt count the number three',4) |
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511 | c = {'Five is right out': 6, (7,8): 9} |
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512 | x = 3 |
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513 | y = 'holy hand granate' |
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514 | |
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515 | |
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516 | T1 = cache(f, (a,b,c,N), {'x':x, 'y':y}, |
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517 | evaluate=1, |
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518 | verbose=verbose) |
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519 | |
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520 | T2 = cache(f, (a,b,c,N), {'x':x, 'y':y}, |
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521 | test=1, |
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522 | verbose=verbose) |
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523 | |
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524 | |
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525 | # Check for presence of cached result |
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526 | msg = 'Different objects with same attributes were not recognised' |
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527 | assert T2 is not None, msg |
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528 | |
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529 | assert T1 == T2, "Option 'test' when cache file present failed" |
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530 | |
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531 | |
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532 | def test_clear(self): |
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533 | """Test that 'clear' works |
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534 | """ |
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535 | |
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536 | N = 5000 #Make N fairly small here |
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537 | |
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538 | a = [1,2] |
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539 | b = ('Thou shalt count the number three',4) |
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540 | c = {'Five is right out': 6, (7,8): 9} |
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541 | x = 3 |
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542 | y = 'holy hand granate' |
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543 | |
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544 | |
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545 | T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}, evaluate = 1) |
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546 | |
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547 | |
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548 | cache(f, (a,b,c,N), {'x':x, 'y':y}, clear = 1) |
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549 | |
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550 | |
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551 | # Test 'test' function when cache is absent |
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552 | |
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553 | |
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554 | T4 = cache(f, (a,b,c,N), {'x':x, 'y':y}, test=1) |
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555 | #print 'T4', T4 |
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556 | assert T4 is None, "Option 'test' when cache absent failed" |
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557 | |
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558 | |
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559 | def test_dependencies(self): |
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560 | |
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561 | # Make a dependency file |
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562 | CD = checkdir(cachedir) |
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563 | |
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564 | DepFN = CD + 'testfile.tmp' |
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565 | DepFN_wildcard = CD + 'test*.tmp' |
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566 | Depfile = open(DepFN,'w') |
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567 | Depfile.write('We are the knights who say NI!') |
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568 | Depfile.close() |
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569 | |
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570 | |
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571 | # Test |
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572 | # |
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573 | |
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574 | N = 5000 #Make N fairly small here |
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575 | |
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576 | a = [1,2] |
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577 | b = ('Thou shalt count the number three',4) |
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578 | c = {'Five is right out': 6, (7,8): 9} |
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579 | x = 3 |
---|
580 | y = 'holy hand granate' |
---|
581 | |
---|
582 | T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN) |
---|
583 | T2 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN) |
---|
584 | |
---|
585 | assert T1 == T2, 'Dependencies do not work' |
---|
586 | |
---|
587 | |
---|
588 | # Test basic wildcard dependency |
---|
589 | T3 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN_wildcard) |
---|
590 | |
---|
591 | assert T1 == T3, 'Dependencies with wildcards do not work' |
---|
592 | |
---|
593 | |
---|
594 | # Test that changed timestamp in dependencies triggers recomputation |
---|
595 | |
---|
596 | # Modify dependency file |
---|
597 | Depfile = open(DepFN,'a') |
---|
598 | Depfile.write('You must cut down the mightiest tree in the forest with a Herring') |
---|
599 | Depfile.close() |
---|
600 | |
---|
601 | T3 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN, test = 1) |
---|
602 | |
---|
603 | assert T3 is None, 'Changed dependencies not recognised' |
---|
604 | |
---|
605 | # Test recomputation when dependencies have changed |
---|
606 | # |
---|
607 | T3 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN) |
---|
608 | assert T1 == T3, 'Recomputed value with changed dependencies failed' |
---|
609 | |
---|
610 | #def test_performance(self): |
---|
611 | # """Performance test (with statistics) |
---|
612 | # Don't really rely on this as it will depend on specific computer. |
---|
613 | # """ |
---|
614 | # |
---|
615 | # import time |
---|
616 | # set_option('savestat', 1) |
---|
617 | # |
---|
618 | # N = 300000 #Should be large on fast computers... |
---|
619 | # a = [1,2] |
---|
620 | # b = ('Thou shalt count the number three',4) |
---|
621 | # c = {'Five is right out': 6, (7,8): 9} |
---|
622 | # x = 3 |
---|
623 | # y = 'holy hand granate' |
---|
624 | # |
---|
625 | # |
---|
626 | # tt = time.time() |
---|
627 | # T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}) |
---|
628 | # t1 = time.time() - tt |
---|
629 | # |
---|
630 | # tt = time.time() |
---|
631 | # T2 = cache(f,(a,b,c,N), {'x':x, 'y':y}) |
---|
632 | # t2 = time.time() - tt |
---|
633 | |
---|
634 | # assert T1 == T2 |
---|
635 | # assert t1 > t2, 'WARNING: Performance a bit low - this could be specific to current platform. Try to increase N in this test' |
---|
636 | # #test_OK('Performance test: relative time saved = %s pct' \ |
---|
637 | # # %str(round((t1-t2)*100/t1,2))) |
---|
638 | |
---|
639 | |
---|
640 | def test_statsfile(self): |
---|
641 | """Test presence of statistics file |
---|
642 | """ |
---|
643 | import os, string |
---|
644 | statsfile = '.cache_stat' # Basefilename for cached statistics. |
---|
645 | |
---|
646 | CD = checkdir(cachedir) |
---|
647 | DIRLIST = os.listdir(CD) |
---|
648 | SF = [] |
---|
649 | for FN in DIRLIST: |
---|
650 | if string.find(FN,statsfile) >= 0: |
---|
651 | try: |
---|
652 | fid = open(CD+FN,'r') |
---|
653 | fid.close() |
---|
654 | except: |
---|
655 | raise 'Statistics files cannot be opened' |
---|
656 | |
---|
657 | |
---|
658 | |
---|
659 | # def test_network_cachedir(self): |
---|
660 | |
---|
661 | # #set_option('cachedir', 'H:\\.python_cache\\') |
---|
662 | # set_option('cachedir', 'V:\\2\\cit\\.python_cache\\') |
---|
663 | # set_option('verbose', 1) |
---|
664 | |
---|
665 | |
---|
666 | # # Make some test input arguments |
---|
667 | # # |
---|
668 | # N = 5000 #Make N fairly small here |
---|
669 | |
---|
670 | # a = [1,2] |
---|
671 | # b = ('Thou shalt count the number three',4) |
---|
672 | # c = {'Five is right out': 6, (7,8): 9} |
---|
673 | # x = 3 |
---|
674 | # y = 'holy hand granate' |
---|
675 | |
---|
676 | # # Test caching |
---|
677 | # # |
---|
678 | |
---|
679 | # comprange = 2 |
---|
680 | |
---|
681 | # for comp in range(comprange): |
---|
682 | |
---|
683 | # # Evaluate and store |
---|
684 | # # |
---|
685 | # T1 = cache(f, (a,b,c,N), {'x':x, 'y':y}, evaluate=1, \ |
---|
686 | # compression=comp) |
---|
687 | |
---|
688 | # # Retrieve |
---|
689 | # # |
---|
690 | # T2 = cache(f, (a,b,c,N), {'x':x, 'y':y}, compression=comp) |
---|
691 | |
---|
692 | # # Reference result |
---|
693 | # # |
---|
694 | # T3 = f(a,b,c,N,x=x,y=y) # Compute without caching |
---|
695 | |
---|
696 | |
---|
697 | # assert T1 == T2, 'Cached result does not match computed result' |
---|
698 | # assert T2 == T3, 'Cached result does not match computed result' |
---|
699 | |
---|
700 | |
---|
701 | |
---|
702 | def Will_fail_test_objects(self): |
---|
703 | """ |
---|
704 | This test shows how instances can't be effectively cached. |
---|
705 | myhash uses hash which uses id which uses the memory address. |
---|
706 | |
---|
707 | This will be a NIL problem once caching can handle instances with different id's and |
---|
708 | identical content. |
---|
709 | |
---|
710 | The test is disabled. |
---|
711 | """ |
---|
712 | |
---|
713 | |
---|
714 | |
---|
715 | verbose = True |
---|
716 | #verbose = False |
---|
717 | |
---|
718 | for i in range(2): |
---|
719 | if verbose: print "clear cache" |
---|
720 | a = cache(Dummy, 'clear') |
---|
721 | |
---|
722 | if verbose: print "cache for first time" |
---|
723 | a = cache(Dummy, args=(9,10), verbose=verbose) |
---|
724 | hash_value = myhash(a) |
---|
725 | |
---|
726 | #print "hash_value",hash_value |
---|
727 | if verbose: print "cache for second time" |
---|
728 | a = cache(Dummy, args=(9,10), verbose=verbose) |
---|
729 | |
---|
730 | #print "myhash(a)",myhash(a) |
---|
731 | assert hash_value == myhash(a) |
---|
732 | |
---|
733 | |
---|
734 | # This test works in the caching dir and in anuga_core, but not in the |
---|
735 | # anuga_core/source/anuga dir |
---|
736 | # This has to do with pickle (see e.g. http://telin.ugent.be/~slippens/drupal/pickleproblem) |
---|
737 | # The error message is |
---|
738 | # PicklingError: Can't pickle test_caching.Dummy: it's not the same object as test_caching.Dummy |
---|
739 | # |
---|
740 | # This problem was fixed by moving the class into the separate module |
---|
741 | |
---|
742 | def test_objects_are_created(self): |
---|
743 | """ |
---|
744 | This test shows how instances can be created from cache |
---|
745 | as long as input arguments are unchanged. |
---|
746 | |
---|
747 | Such instances will have different id's and cannot be currently be used as input |
---|
748 | arguments in subsequent caches. However, this is still useful. |
---|
749 | |
---|
750 | Do it for all combinations of compression |
---|
751 | |
---|
752 | """ |
---|
753 | |
---|
754 | verbose = False |
---|
755 | |
---|
756 | for compression_store in [False, True]: |
---|
757 | for compression_retrieve in [False, True]: |
---|
758 | |
---|
759 | if verbose: print 'clear cache' |
---|
760 | a = cache(Dummy, 'clear') |
---|
761 | |
---|
762 | if verbose: print 'cache for first time' |
---|
763 | a = cache(Dummy, args=(9,10), |
---|
764 | compression=compression_store, |
---|
765 | verbose=verbose) |
---|
766 | |
---|
767 | if verbose: print 'Check that cache is there' |
---|
768 | assert cache(Dummy, args=(9,10), test=1, |
---|
769 | compression=compression_retrieve, |
---|
770 | verbose=verbose) |
---|
771 | |
---|
772 | |
---|
773 | |
---|
774 | # NOTE (Ole): This test has been commented out because, |
---|
775 | # although the test will pass (not anymore!) |
---|
776 | # inside the caching dir and also at the anuga_core level, |
---|
777 | # it won't pass at the anuga_core/source/anuga level. |
---|
778 | # It may have to do with the comments above. |
---|
779 | # |
---|
780 | # But this is a very nice test to run occasionally within the caching |
---|
781 | # area |
---|
782 | def Xtest_objects_are_created_memory(self): |
---|
783 | """ |
---|
784 | |
---|
785 | This test shows how instances can be created from cache |
---|
786 | as long as input arguments are unchanged - even if the class |
---|
787 | lives in different memory locations. |
---|
788 | |
---|
789 | This is using cache created in the main program below |
---|
790 | """ |
---|
791 | |
---|
792 | verbose = True #False |
---|
793 | |
---|
794 | # Redefine class Dummy_memorytest |
---|
795 | class Dummy_memorytest: |
---|
796 | def __init__(self, value, another): |
---|
797 | self.value = value |
---|
798 | |
---|
799 | # Make sure that class has been redefined to another address |
---|
800 | print |
---|
801 | print 'Initial_addr ', initial_addr |
---|
802 | print 'Redefined addr', `Dummy_memorytest` |
---|
803 | msg = 'Redefined class ended up at same memory location as ' |
---|
804 | msg += 'original class making this test irrelevant. Try to run ' |
---|
805 | msg += 'it again and see if this error goes away.' |
---|
806 | msg += 'If it persists contact Ole.Nielsen@ga.gov.au' |
---|
807 | assert initial_addr != `Dummy_memorytest`, msg |
---|
808 | |
---|
809 | |
---|
810 | retrieve_cache(Dummy_memorytest, verbose=verbose) |
---|
811 | |
---|
812 | # Cache created for use with 'test_objects_are_created_memory' |
---|
813 | #initial_addr = `Dummy_memorytest` |
---|
814 | #clear_and_create_cache(Dummy_memorytest, verbose=False) |
---|
815 | |
---|
816 | |
---|
817 | |
---|
818 | #------------------------------------------------------------- |
---|
819 | if __name__ == "__main__": |
---|
820 | #suite = unittest.makeSuite(Test_Caching, 'test_hash_collision') |
---|
821 | suite = unittest.makeSuite(Test_Caching, 'test') |
---|
822 | runner = unittest.TextTestRunner() |
---|
823 | runner.run(suite) |
---|