| 1 | |
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| 2 | import unittest |
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| 3 | from Numeric import arange, array |
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| 4 | |
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| 5 | from anuga.caching import * |
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| 6 | from anuga.caching.dummy_classes_for_testing import Dummy, Dummy_memorytest |
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| 7 | |
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| 8 | |
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| 9 | # Define a test function to be cached |
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| 10 | # |
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| 11 | def f(a,b,c,N,x=0,y='abcdefg'): |
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| 12 | """f(a,b,c,N) |
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| 13 | Do something time consuming and produce a complex result. |
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| 14 | """ |
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| 15 | |
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| 16 | import string |
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| 17 | |
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| 18 | B = [] |
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| 19 | for n in range(N): |
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| 20 | s = str(n+2.0/(n + 4.0))+'.a'*10 |
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| 21 | B.append((a,b,c,s,n,x,y)) |
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| 22 | return(B) |
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| 23 | |
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| 24 | def f_numeric(A, B): |
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| 25 | """Operation on Numeric arrays |
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| 26 | """ |
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| 27 | |
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| 28 | return 3.1*A + B + 1 |
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| 29 | |
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| 30 | |
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| 31 | def f_object(A, B): |
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| 32 | """Operation of objecs of class Dummy |
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| 33 | """ |
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| 34 | |
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| 35 | return A.value+B.value, A.another+B.another |
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| 36 | |
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| 37 | |
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| 38 | |
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| 39 | def clear_and_create_cache(Dummy, verbose=False): |
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| 40 | |
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| 41 | a = cache(Dummy, 'clear', verbose=verbose) |
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| 42 | a = cache(Dummy, args=(9,10), |
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| 43 | verbose=verbose) |
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| 44 | |
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| 45 | |
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| 46 | def retrieve_cache(Dummy, verbose=False): |
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| 47 | if verbose: print 'Check that cache is there' |
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| 48 | |
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| 49 | X = cache(Dummy, args=(9,10), test=1, |
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| 50 | verbose=verbose) |
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| 51 | |
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| 52 | msg = 'Cached value was not found' |
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| 53 | assert X is not None, msg |
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| 54 | |
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| 55 | |
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| 56 | |
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| 57 | |
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| 58 | |
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| 59 | class Test_Caching(unittest.TestCase): |
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| 60 | def setUp(self): |
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| 61 | set_option('verbose', 0) #Why |
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| 62 | |
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| 63 | pass |
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| 64 | |
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| 65 | def tearDown(self): |
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| 66 | pass |
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| 67 | |
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| 68 | def test_simple(self): |
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| 69 | """Check set_option (and switch stats off) |
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| 70 | """ |
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| 71 | |
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| 72 | set_option('savestat', 0) |
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| 73 | assert options['savestat'] == 0 |
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| 74 | set_option('verbose', 0) |
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| 75 | assert options['verbose'] == 0 |
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| 76 | |
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| 77 | |
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| 78 | def test_basic_caching(self): |
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| 79 | |
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| 80 | verbose=False |
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| 81 | # Make some test input arguments |
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| 82 | # |
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| 83 | N = 5000 #Make N fairly small here |
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| 84 | |
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| 85 | a = [1,2] |
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| 86 | b = ('Thou shalt count the number three',4) |
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| 87 | c = {'Five is right out': 6, (7,8): 9} |
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| 88 | x = 3 |
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| 89 | y = 'holy hand granate' |
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| 90 | |
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| 91 | # Test caching |
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| 92 | # |
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| 93 | |
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| 94 | comprange = 2 |
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| 95 | |
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| 96 | for comp in range(comprange): |
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| 97 | |
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| 98 | # Evaluate and store |
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| 99 | # |
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| 100 | T1 = cache(f, (a,b,c,N), {'x':x, 'y':y}, evaluate=1, \ |
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| 101 | compression=comp, verbose=verbose) |
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| 102 | |
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| 103 | # Retrieve |
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| 104 | # |
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| 105 | T2 = cache(f, (a,b,c,N), {'x':x, 'y':y}, compression=comp) |
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| 106 | |
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| 107 | # Reference result |
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| 108 | # |
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| 109 | T3 = f(a,b,c,N,x=x,y=y) # Compute without caching |
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| 110 | |
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| 111 | |
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| 112 | assert T1 == T2, 'Cached result does not match computed result' |
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| 113 | assert T2 == T3, 'Cached result does not match computed result' |
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| 114 | |
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| 115 | |
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| 116 | def test_caching_of_numeric_arrays(self): |
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| 117 | """test_caching_of_numeric_arrays |
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| 118 | |
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| 119 | Test that Numeric arrays can be recognised by caching even if their id's are different |
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| 120 | """ |
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| 121 | |
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| 122 | verbose = False |
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| 123 | |
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| 124 | # Make some test input arguments |
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| 125 | A0 = arange(5) |
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| 126 | B0 = array([1.1, 2.2, 0.0, -5, -5]) |
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| 127 | |
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| 128 | A1 = A0.copy() |
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| 129 | B1 = B0.copy() |
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| 130 | |
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| 131 | # Check that their ids are different |
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| 132 | assert id(A0) != id(A1) |
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| 133 | assert id(B0) != id(B1) |
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| 134 | |
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| 135 | |
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| 136 | # Test caching |
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| 137 | comprange = 2 |
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| 138 | for comp in range(comprange): |
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| 139 | |
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| 140 | # Evaluate and store |
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| 141 | T1 = cache(f_numeric, (A0, B0), evaluate=1, |
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| 142 | compression=comp, verbose=verbose) |
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| 143 | |
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| 144 | # Retrieve |
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| 145 | T2 = cache(f_numeric, (A1, B1), |
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| 146 | compression=comp, test=1, verbose=verbose) |
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| 147 | |
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| 148 | # Check for presence of cached result |
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| 149 | msg = 'Different array objects with same contents were not recognised' |
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| 150 | assert T2 is not None, msg |
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| 151 | |
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| 152 | # Reference result |
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| 153 | T3 = f_numeric(A0, B0) # Compute without caching |
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| 154 | |
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| 155 | |
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| 156 | assert T1 == T2, 'Cached result does not match computed result' |
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| 157 | assert T2 == T3, 'Cached result does not match computed result' |
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| 158 | |
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| 159 | |
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| 160 | |
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| 161 | def test_caching_of_objects(self): |
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| 162 | """test_caching_of_objects |
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| 163 | |
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| 164 | Test that Objecs can be recognised as input variabelse |
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| 165 | by caching even if their id's are different |
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| 166 | """ |
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| 167 | |
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| 168 | |
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| 169 | verbose = False |
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| 170 | |
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| 171 | # Make some test input arguments |
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| 172 | A0 = Dummy(5, 7) |
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| 173 | B0 = Dummy(2.2, -5) |
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| 174 | |
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| 175 | A1 = A0.copy() |
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| 176 | B1 = B0.copy() |
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| 177 | |
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| 178 | # Check that their ids are different |
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| 179 | assert id(A0) != id(A1) |
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| 180 | assert id(B0) != id(B1) |
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| 181 | |
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| 182 | |
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| 183 | # Test caching |
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| 184 | comprange = 2 |
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| 185 | for comp in range(comprange): |
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| 186 | |
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| 187 | # Evaluate and store |
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| 188 | T1 = cache(f_object, (A0, B0), evaluate=1, |
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| 189 | compression=comp, verbose=verbose) |
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| 190 | |
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| 191 | # Retrieve |
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| 192 | T2 = cache(f_object, (A1, B1), |
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| 193 | compression=comp, test=1, verbose=verbose) |
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| 194 | |
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| 195 | # Check for presence of cached result |
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| 196 | msg = 'Different objects with same attributes were not recognised' |
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| 197 | assert T2 is not None, msg |
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| 198 | |
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| 199 | # Reference result |
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| 200 | T3 = f_object(A0, B0) # Compute without caching |
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| 201 | |
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| 202 | |
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| 203 | assert T1 == T2, 'Cached result does not match computed result' |
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| 204 | assert T2 == T3, 'Cached result does not match computed result' |
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| 205 | |
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| 206 | |
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| 207 | |
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| 208 | |
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| 209 | |
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| 210 | def test_cachefiles(self): |
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| 211 | """Test existence of cachefiles |
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| 212 | """ |
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| 213 | N = 5000 #Make N fairly small here |
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| 214 | |
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| 215 | a = [1,2] |
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| 216 | b = ('Thou shalt count the number three',4) |
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| 217 | c = {'Five is right out': 6, (7,8): 9} |
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| 218 | x = 3 |
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| 219 | y = 'holy hand granate' |
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| 220 | |
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| 221 | |
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| 222 | FN = cache(f,(a,b,c,N), {'x':x, 'y':y}, verbose=0, \ |
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| 223 | return_filename = 1) |
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| 224 | |
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| 225 | |
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| 226 | assert FN[:2] == 'f[' |
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| 227 | |
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| 228 | CD = checkdir(cachedir) |
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| 229 | compression = 1 |
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| 230 | |
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| 231 | (datafile,compressed0) = myopen(CD+FN+'_'+file_types[0],"rb",compression) |
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| 232 | (argsfile,compressed1) = myopen(CD+FN+'_'+file_types[1],"rb",compression) |
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| 233 | (admfile,compressed2) = myopen(CD+FN+'_'+file_types[2],"rb",compression) |
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| 234 | |
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| 235 | datafile.close() |
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| 236 | argsfile.close() |
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| 237 | admfile.close() |
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| 238 | |
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| 239 | def test_test(self): |
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| 240 | """Test 'test' function when cache is present |
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| 241 | """ |
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| 242 | N = 5000 #Make N fairly small here |
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| 243 | |
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| 244 | a = [1,2] |
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| 245 | b = ('Thou shalt count the number three',4) |
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| 246 | c = {'Five is right out': 6, (7,8): 9} |
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| 247 | x = 3 |
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| 248 | y = 'holy hand granate' |
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| 249 | |
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| 250 | |
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| 251 | T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}, evaluate=1) |
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| 252 | |
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| 253 | T4 = cache(f,(a,b,c,N), {'x':x, 'y':y}, test=1) |
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| 254 | assert T1 == T4, "Option 'test' when cache file present failed" |
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| 255 | |
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| 256 | |
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| 257 | def test_clear(self): |
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| 258 | """Test that 'clear' works |
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| 259 | """ |
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| 260 | |
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| 261 | N = 5000 #Make N fairly small here |
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| 262 | |
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| 263 | a = [1,2] |
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| 264 | b = ('Thou shalt count the number three',4) |
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| 265 | c = {'Five is right out': 6, (7,8): 9} |
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| 266 | x = 3 |
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| 267 | y = 'holy hand granate' |
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| 268 | |
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| 269 | |
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| 270 | T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}, evaluate = 1) |
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| 271 | |
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| 272 | |
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| 273 | cache(f, (a,b,c,N), {'x':x, 'y':y}, clear = 1) |
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| 274 | |
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| 275 | |
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| 276 | # Test 'test' function when cache is absent |
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| 277 | |
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| 278 | |
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| 279 | T4 = cache(f, (a,b,c,N), {'x':x, 'y':y}, test=1) |
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| 280 | #print 'T4', T4 |
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| 281 | assert T4 is None, "Option 'test' when cache absent failed" |
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| 282 | |
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| 283 | |
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| 284 | def test_dependencies(self): |
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| 285 | |
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| 286 | # Make a dependency file |
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| 287 | CD = checkdir(cachedir) |
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| 288 | |
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| 289 | DepFN = CD + 'testfile.tmp' |
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| 290 | DepFN_wildcard = CD + 'test*.tmp' |
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| 291 | Depfile = open(DepFN,'w') |
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| 292 | Depfile.write('We are the knights who say NI!') |
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| 293 | Depfile.close() |
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| 294 | |
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| 295 | |
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| 296 | # Test |
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| 297 | # |
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| 298 | |
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| 299 | N = 5000 #Make N fairly small here |
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| 300 | |
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| 301 | a = [1,2] |
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| 302 | b = ('Thou shalt count the number three',4) |
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| 303 | c = {'Five is right out': 6, (7,8): 9} |
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| 304 | x = 3 |
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| 305 | y = 'holy hand granate' |
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| 306 | |
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| 307 | T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN) |
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| 308 | T2 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN) |
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| 309 | |
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| 310 | assert T1 == T2, 'Dependencies do not work' |
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| 311 | |
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| 312 | |
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| 313 | # Test basic wildcard dependency |
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| 314 | T3 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN_wildcard) |
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| 315 | |
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| 316 | assert T1 == T3, 'Dependencies with wildcards do not work' |
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| 317 | |
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| 318 | |
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| 319 | # Test that changed timestamp in dependencies triggers recomputation |
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| 320 | |
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| 321 | # Modify dependency file |
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| 322 | Depfile = open(DepFN,'a') |
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| 323 | Depfile.write('You must cut down the mightiest tree in the forest with a Herring') |
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| 324 | Depfile.close() |
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| 325 | |
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| 326 | T3 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN, test = 1) |
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| 327 | |
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| 328 | assert T3 is None, 'Changed dependencies not recognised' |
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| 329 | |
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| 330 | # Test recomputation when dependencies have changed |
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| 331 | # |
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| 332 | T3 = cache(f,(a,b,c,N), {'x':x, 'y':y}, dependencies=DepFN) |
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| 333 | assert T1 == T3, 'Recomputed value with changed dependencies failed' |
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| 334 | |
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| 335 | #def test_performance(self): |
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| 336 | # """Performance test (with statistics) |
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| 337 | # Don't really rely on this as it will depend on specific computer. |
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| 338 | # """ |
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| 339 | # |
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| 340 | # import time |
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| 341 | # set_option('savestat', 1) |
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| 342 | # |
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| 343 | # N = 300000 #Should be large on fast computers... |
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| 344 | # a = [1,2] |
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| 345 | # b = ('Thou shalt count the number three',4) |
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| 346 | # c = {'Five is right out': 6, (7,8): 9} |
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| 347 | # x = 3 |
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| 348 | # y = 'holy hand granate' |
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| 349 | # |
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| 350 | # |
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| 351 | # tt = time.time() |
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| 352 | # T1 = cache(f,(a,b,c,N), {'x':x, 'y':y}) |
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| 353 | # t1 = time.time() - tt |
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| 354 | # |
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| 355 | # tt = time.time() |
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| 356 | # T2 = cache(f,(a,b,c,N), {'x':x, 'y':y}) |
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| 357 | # t2 = time.time() - tt |
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| 358 | |
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| 359 | # assert T1 == T2 |
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| 360 | # assert t1 > t2, 'WARNING: Performance a bit low - this could be specific to current platform. Try to increase N in this test' |
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| 361 | # #test_OK('Performance test: relative time saved = %s pct' \ |
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| 362 | # # %str(round((t1-t2)*100/t1,2))) |
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| 363 | |
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| 364 | |
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| 365 | def test_statsfile(self): |
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| 366 | """Test presence of statistics file |
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| 367 | """ |
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| 368 | import os, string |
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| 369 | statsfile = '.cache_stat' # Basefilename for cached statistics. |
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| 370 | |
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| 371 | CD = checkdir(cachedir) |
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| 372 | DIRLIST = os.listdir(CD) |
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| 373 | SF = [] |
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| 374 | for FN in DIRLIST: |
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| 375 | if string.find(FN,statsfile) >= 0: |
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| 376 | try: |
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| 377 | fid = open(CD+FN,'r') |
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| 378 | fid.close() |
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| 379 | except: |
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| 380 | raise 'Statistics files cannot be opened' |
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| 381 | |
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| 382 | |
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| 383 | |
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| 384 | # def test_network_cachedir(self): |
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| 385 | |
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| 386 | # #set_option('cachedir', 'H:\\.python_cache\\') |
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| 387 | # set_option('cachedir', 'V:\\2\\cit\\.python_cache\\') |
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| 388 | # set_option('verbose', 1) |
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| 389 | |
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| 390 | |
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| 391 | # # Make some test input arguments |
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| 392 | # # |
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| 393 | # N = 5000 #Make N fairly small here |
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| 394 | |
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| 395 | # a = [1,2] |
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| 396 | # b = ('Thou shalt count the number three',4) |
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| 397 | # c = {'Five is right out': 6, (7,8): 9} |
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| 398 | # x = 3 |
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| 399 | # y = 'holy hand granate' |
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| 400 | |
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| 401 | # # Test caching |
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| 402 | # # |
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| 403 | |
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| 404 | # comprange = 2 |
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| 405 | |
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| 406 | # for comp in range(comprange): |
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| 407 | |
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| 408 | # # Evaluate and store |
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| 409 | # # |
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| 410 | # T1 = cache(f, (a,b,c,N), {'x':x, 'y':y}, evaluate=1, \ |
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| 411 | # compression=comp) |
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| 412 | |
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| 413 | # # Retrieve |
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| 414 | # # |
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| 415 | # T2 = cache(f, (a,b,c,N), {'x':x, 'y':y}, compression=comp) |
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| 416 | |
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| 417 | # # Reference result |
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| 418 | # # |
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| 419 | # T3 = f(a,b,c,N,x=x,y=y) # Compute without caching |
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| 420 | |
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| 421 | |
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| 422 | # assert T1 == T2, 'Cached result does not match computed result' |
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| 423 | # assert T2 == T3, 'Cached result does not match computed result' |
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| 424 | |
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| 425 | |
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| 426 | |
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| 427 | def Will_fail_test_objects(self): |
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| 428 | """ |
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| 429 | This test shows how instances can't be effectively cached. |
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| 430 | myhash uses hash which uses id which uses the memory address. |
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| 431 | """ |
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| 432 | verbose = True |
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| 433 | #verbose = False |
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| 434 | |
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| 435 | for i in range(2): |
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| 436 | if verbose: print "clear cache" |
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| 437 | a = cache(Dummy, 'clear') |
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| 438 | |
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| 439 | if verbose: print "cache for first time" |
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| 440 | a = cache(Dummy, args=(9,10), verbose=verbose) |
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| 441 | hash_value = myhash(a) |
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| 442 | |
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| 443 | #print "hash_value",hash_value |
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| 444 | if verbose: print "cache for second time" |
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| 445 | a = cache(Dummy, args=(9,10), verbose=verbose) |
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| 446 | |
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| 447 | #print "myhash(a)",myhash(a) |
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| 448 | assert hash_value == myhash(a) |
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| 449 | |
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| 450 | |
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| 451 | # This test works in the caching dir and in anuga_core, but not in the |
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| 452 | # anuga_core/source/anuga dir |
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| 453 | # This has to do with pickle (see e.g. http://telin.ugent.be/~slippens/drupal/pickleproblem) |
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| 454 | # The error message is |
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| 455 | # PicklingError: Can't pickle test_caching.Dummy: it's not the same object as test_caching.Dummy |
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| 456 | # |
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| 457 | # This problem was fixed by moving the class into the separate module |
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| 458 | |
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| 459 | def test_objects_are_created(self): |
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| 460 | """ |
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| 461 | This test shows how instances can be created from cache |
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| 462 | as long as input arguments are unchanged. |
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| 463 | |
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| 464 | Such instances will have different id's and cannot be currently be used as input |
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| 465 | arguments in subsequent caches. However, this is still useful. |
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| 466 | |
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| 467 | Do it for all combinations of compression |
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| 468 | |
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| 469 | """ |
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| 470 | |
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| 471 | verbose = False |
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| 472 | |
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| 473 | for compression_store in [False, True]: |
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| 474 | for compression_retrieve in [False, True]: |
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| 475 | |
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| 476 | if verbose: print 'clear cache' |
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| 477 | a = cache(Dummy, 'clear') |
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| 478 | |
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| 479 | if verbose: print 'cache for first time' |
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| 480 | a = cache(Dummy, args=(9,10), |
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| 481 | compression=compression_store, |
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| 482 | verbose=verbose) |
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| 483 | |
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| 484 | if verbose: print 'Check that cache is there' |
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| 485 | assert cache(Dummy, args=(9,10), test=1, |
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| 486 | compression=compression_retrieve, |
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| 487 | verbose=verbose) |
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| 488 | |
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| 489 | |
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| 490 | |
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| 491 | # NOTE (Ole): This test has been commented out because, although the test will pass |
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| 492 | # inside the caching dir and also at the anuga_core level, |
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| 493 | # it won't pass at the anuga_core/source/anuga level. |
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| 494 | # It may have to do with the comments above. |
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| 495 | # |
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| 496 | # But this is probably not so important, really |
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| 497 | def Xtest_objects_are_created_memory(self): |
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| 498 | """ |
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| 499 | |
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| 500 | This test shows how instances can be created from cache |
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| 501 | as long as input arguments are unchanged - even if the class |
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| 502 | lives in different memory locations. |
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| 503 | |
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| 504 | This is using cache created in the main program below |
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| 505 | """ |
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| 506 | |
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| 507 | verbose = False |
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| 508 | |
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| 509 | # Redefine class Dummy_memorytest |
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| 510 | class Dummy_memorytest: |
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| 511 | def __init__(self, value, another): |
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| 512 | self.value = value |
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| 513 | |
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| 514 | # Make sure that class has been redefined to another address |
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| 515 | print |
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| 516 | print 'Initial_addr ', initial_addr |
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| 517 | print 'Redefined addr', `Dummy_memorytest` |
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| 518 | msg = 'Redefined class ended up at same memory location as ' |
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| 519 | msg += 'original class making this test irrelevant. Try to run ' |
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| 520 | msg += 'it again and see if this error goes away.' |
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| 521 | msg += 'If it persists contact Ole.Nielsen@ga.gov.au' |
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| 522 | assert initial_addr != `Dummy_memorytest`, msg |
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| 523 | |
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| 524 | |
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| 525 | retrieve_cache(Dummy_memorytest, verbose=verbose) |
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| 526 | |
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| 527 | # Cache created for use with 'test_objects_are_created_memory' |
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| 528 | initial_addr = `Dummy_memorytest` |
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| 529 | clear_and_create_cache(Dummy_memorytest, verbose=False) |
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| 530 | |
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| 531 | |
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| 532 | |
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| 533 | |
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| 534 | |
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| 535 | |
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| 536 | |
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| 537 | |
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| 538 | |
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| 539 | #------------------------------------------------------------- |
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| 540 | if __name__ == "__main__": |
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| 541 | suite = unittest.makeSuite(Test_Caching,'test') |
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| 542 | runner = unittest.TextTestRunner() |
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| 543 | runner.run(suite) |
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