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1 """ |
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2 Test cases for the repr module |
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3 Nick Mathewson |
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4 """ |
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5 |
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6 import sys |
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7 import os |
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8 import shutil |
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9 import unittest |
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10 |
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11 from test.test_support import run_unittest |
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12 from repr import repr as r # Don't shadow builtin repr |
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13 from repr import Repr |
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14 |
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15 |
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16 def nestedTuple(nesting): |
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17 t = () |
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18 for i in range(nesting): |
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19 t = (t,) |
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20 return t |
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21 |
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22 class ReprTests(unittest.TestCase): |
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23 |
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24 def test_string(self): |
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25 eq = self.assertEquals |
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26 eq(r("abc"), "'abc'") |
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27 eq(r("abcdefghijklmnop"),"'abcdefghijklmnop'") |
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28 |
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29 s = "a"*30+"b"*30 |
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30 expected = repr(s)[:13] + "..." + repr(s)[-14:] |
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31 eq(r(s), expected) |
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32 |
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33 eq(r("\"'"), repr("\"'")) |
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34 s = "\""*30+"'"*100 |
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35 expected = repr(s)[:13] + "..." + repr(s)[-14:] |
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36 eq(r(s), expected) |
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37 |
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38 def test_tuple(self): |
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39 eq = self.assertEquals |
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40 eq(r((1,)), "(1,)") |
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41 |
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42 t3 = (1, 2, 3) |
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43 eq(r(t3), "(1, 2, 3)") |
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44 |
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45 r2 = Repr() |
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46 r2.maxtuple = 2 |
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47 expected = repr(t3)[:-2] + "...)" |
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48 eq(r2.repr(t3), expected) |
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49 |
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50 def test_container(self): |
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51 from array import array |
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52 from collections import deque |
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53 |
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54 eq = self.assertEquals |
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55 # Tuples give up after 6 elements |
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56 eq(r(()), "()") |
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57 eq(r((1,)), "(1,)") |
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58 eq(r((1, 2, 3)), "(1, 2, 3)") |
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59 eq(r((1, 2, 3, 4, 5, 6)), "(1, 2, 3, 4, 5, 6)") |
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60 eq(r((1, 2, 3, 4, 5, 6, 7)), "(1, 2, 3, 4, 5, 6, ...)") |
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61 |
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62 # Lists give up after 6 as well |
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63 eq(r([]), "[]") |
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64 eq(r([1]), "[1]") |
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65 eq(r([1, 2, 3]), "[1, 2, 3]") |
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66 eq(r([1, 2, 3, 4, 5, 6]), "[1, 2, 3, 4, 5, 6]") |
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67 eq(r([1, 2, 3, 4, 5, 6, 7]), "[1, 2, 3, 4, 5, 6, ...]") |
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68 |
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69 # Sets give up after 6 as well |
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70 eq(r(set([])), "set([])") |
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71 eq(r(set([1])), "set([1])") |
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72 eq(r(set([1, 2, 3])), "set([1, 2, 3])") |
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73 eq(r(set([1, 2, 3, 4, 5, 6])), "set([1, 2, 3, 4, 5, 6])") |
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74 eq(r(set([1, 2, 3, 4, 5, 6, 7])), "set([1, 2, 3, 4, 5, 6, ...])") |
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75 |
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76 # Frozensets give up after 6 as well |
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77 eq(r(frozenset([])), "frozenset([])") |
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78 eq(r(frozenset([1])), "frozenset([1])") |
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79 eq(r(frozenset([1, 2, 3])), "frozenset([1, 2, 3])") |
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80 eq(r(frozenset([1, 2, 3, 4, 5, 6])), "frozenset([1, 2, 3, 4, 5, 6])") |
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81 eq(r(frozenset([1, 2, 3, 4, 5, 6, 7])), "frozenset([1, 2, 3, 4, 5, 6, ...])") |
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82 |
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83 # collections.deque after 6 |
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84 eq(r(deque([1, 2, 3, 4, 5, 6, 7])), "deque([1, 2, 3, 4, 5, 6, ...])") |
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85 |
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86 # Dictionaries give up after 4. |
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87 eq(r({}), "{}") |
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88 d = {'alice': 1, 'bob': 2, 'charles': 3, 'dave': 4} |
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89 eq(r(d), "{'alice': 1, 'bob': 2, 'charles': 3, 'dave': 4}") |
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90 d['arthur'] = 1 |
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91 eq(r(d), "{'alice': 1, 'arthur': 1, 'bob': 2, 'charles': 3, ...}") |
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92 |
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93 # array.array after 5. |
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94 eq(r(array('i')), "array('i', [])") |
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95 eq(r(array('i', [1])), "array('i', [1])") |
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96 eq(r(array('i', [1, 2])), "array('i', [1, 2])") |
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97 eq(r(array('i', [1, 2, 3])), "array('i', [1, 2, 3])") |
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98 eq(r(array('i', [1, 2, 3, 4])), "array('i', [1, 2, 3, 4])") |
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99 eq(r(array('i', [1, 2, 3, 4, 5])), "array('i', [1, 2, 3, 4, 5])") |
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100 eq(r(array('i', [1, 2, 3, 4, 5, 6])), |
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101 "array('i', [1, 2, 3, 4, 5, ...])") |
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102 |
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103 def test_numbers(self): |
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104 eq = self.assertEquals |
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105 eq(r(123), repr(123)) |
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106 eq(r(123L), repr(123L)) |
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107 eq(r(1.0/3), repr(1.0/3)) |
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108 |
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109 n = 10L**100 |
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110 expected = repr(n)[:18] + "..." + repr(n)[-19:] |
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111 eq(r(n), expected) |
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112 |
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113 def test_instance(self): |
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114 eq = self.assertEquals |
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115 i1 = ClassWithRepr("a") |
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116 eq(r(i1), repr(i1)) |
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117 |
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118 i2 = ClassWithRepr("x"*1000) |
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119 expected = repr(i2)[:13] + "..." + repr(i2)[-14:] |
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120 eq(r(i2), expected) |
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121 |
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122 i3 = ClassWithFailingRepr() |
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123 eq(r(i3), ("<ClassWithFailingRepr instance at %x>"%id(i3))) |
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124 |
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125 s = r(ClassWithFailingRepr) |
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126 self.failUnless(s.startswith("<class ")) |
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127 self.failUnless(s.endswith(">")) |
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128 self.failUnless(s.find("...") == 8) |
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129 |
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130 def test_file(self): |
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131 fp = open(unittest.__file__) |
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132 self.failUnless(repr(fp).startswith( |
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133 "<open file '%s', mode 'r' at 0x" % unittest.__file__)) |
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134 fp.close() |
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135 self.failUnless(repr(fp).startswith( |
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136 "<closed file '%s', mode 'r' at 0x" % unittest.__file__)) |
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137 |
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138 def test_lambda(self): |
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139 self.failUnless(repr(lambda x: x).startswith( |
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140 "<function <lambda")) |
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141 # XXX anonymous functions? see func_repr |
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142 |
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143 def test_builtin_function(self): |
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144 eq = self.assertEquals |
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145 # Functions |
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146 eq(repr(hash), '<built-in function hash>') |
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147 # Methods |
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148 self.failUnless(repr(''.split).startswith( |
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149 '<built-in method split of str object at 0x')) |
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150 |
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151 def test_xrange(self): |
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152 import warnings |
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153 eq = self.assertEquals |
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154 eq(repr(xrange(1)), 'xrange(1)') |
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155 eq(repr(xrange(1, 2)), 'xrange(1, 2)') |
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156 eq(repr(xrange(1, 2, 3)), 'xrange(1, 4, 3)') |
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157 |
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158 def test_nesting(self): |
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159 eq = self.assertEquals |
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160 # everything is meant to give up after 6 levels. |
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161 eq(r([[[[[[[]]]]]]]), "[[[[[[[]]]]]]]") |
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162 eq(r([[[[[[[[]]]]]]]]), "[[[[[[[...]]]]]]]") |
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163 |
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164 eq(r(nestedTuple(6)), "(((((((),),),),),),)") |
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165 eq(r(nestedTuple(7)), "(((((((...),),),),),),)") |
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166 |
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167 eq(r({ nestedTuple(5) : nestedTuple(5) }), |
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168 "{((((((),),),),),): ((((((),),),),),)}") |
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169 eq(r({ nestedTuple(6) : nestedTuple(6) }), |
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170 "{((((((...),),),),),): ((((((...),),),),),)}") |
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171 |
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172 eq(r([[[[[[{}]]]]]]), "[[[[[[{}]]]]]]") |
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173 eq(r([[[[[[[{}]]]]]]]), "[[[[[[[...]]]]]]]") |
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174 |
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175 def test_buffer(self): |
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176 # XXX doesn't test buffers with no b_base or read-write buffers (see |
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177 # bufferobject.c). The test is fairly incomplete too. Sigh. |
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178 x = buffer('foo') |
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179 self.failUnless(repr(x).startswith('<read-only buffer for 0x')) |
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180 |
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181 def test_cell(self): |
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182 # XXX Hmm? How to get at a cell object? |
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183 pass |
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184 |
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185 def test_descriptors(self): |
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186 eq = self.assertEquals |
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187 # method descriptors |
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188 eq(repr(dict.items), "<method 'items' of 'dict' objects>") |
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189 # XXX member descriptors |
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190 # XXX attribute descriptors |
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191 # XXX slot descriptors |
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192 # static and class methods |
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193 class C: |
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194 def foo(cls): pass |
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195 x = staticmethod(C.foo) |
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196 self.failUnless(repr(x).startswith('<staticmethod object at 0x')) |
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197 x = classmethod(C.foo) |
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198 self.failUnless(repr(x).startswith('<classmethod object at 0x')) |
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199 |
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200 def test_unsortable(self): |
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201 # Repr.repr() used to call sorted() on sets, frozensets and dicts |
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202 # without taking into account that not all objects are comparable |
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203 x = set([1j, 2j, 3j]) |
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204 y = frozenset(x) |
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205 z = {1j: 1, 2j: 2} |
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206 r(x) |
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207 r(y) |
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208 r(z) |
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209 |
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210 def touch(path, text=''): |
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211 fp = open(path, 'w') |
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212 fp.write(text) |
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213 fp.close() |
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214 |
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215 def zap(actions, dirname, names): |
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216 for name in names: |
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217 actions.append(os.path.join(dirname, name)) |
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218 |
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219 class LongReprTest(unittest.TestCase): |
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220 def setUp(self): |
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221 longname = 'areallylongpackageandmodulenametotestreprtruncation' |
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222 self.pkgname = os.path.join(longname) |
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223 self.subpkgname = os.path.join(longname, longname) |
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224 # Make the package and subpackage |
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225 shutil.rmtree(self.pkgname, ignore_errors=True) |
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226 os.mkdir(self.pkgname) |
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227 touch(os.path.join(self.pkgname, '__init__'+os.extsep+'py')) |
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228 shutil.rmtree(self.subpkgname, ignore_errors=True) |
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229 os.mkdir(self.subpkgname) |
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230 touch(os.path.join(self.subpkgname, '__init__'+os.extsep+'py')) |
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231 # Remember where we are |
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232 self.here = os.getcwd() |
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233 sys.path.insert(0, self.here) |
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234 |
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235 def tearDown(self): |
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236 actions = [] |
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237 os.path.walk(self.pkgname, zap, actions) |
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238 actions.append(self.pkgname) |
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239 actions.sort() |
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240 actions.reverse() |
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241 for p in actions: |
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242 if os.path.isdir(p): |
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243 os.rmdir(p) |
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244 else: |
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245 os.remove(p) |
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246 del sys.path[0] |
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247 |
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248 def test_module(self): |
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249 eq = self.assertEquals |
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250 touch(os.path.join(self.subpkgname, self.pkgname + os.extsep + 'py')) |
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251 from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import areallylongpackageandmodulenametotestreprtruncation |
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252 eq(repr(areallylongpackageandmodulenametotestreprtruncation), |
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253 "<module '%s' from '%s'>" % (areallylongpackageandmodulenametotestreprtruncation.__name__, areallylongpackageandmodulenametotestreprtruncation.__file__)) |
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254 eq(repr(sys), "<module 'sys' (built-in)>") |
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255 |
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256 def test_type(self): |
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257 eq = self.assertEquals |
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258 touch(os.path.join(self.subpkgname, 'foo'+os.extsep+'py'), '''\ |
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259 class foo(object): |
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260 pass |
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261 ''') |
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262 from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import foo |
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263 eq(repr(foo.foo), |
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264 "<class '%s.foo'>" % foo.__name__) |
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265 |
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266 def test_object(self): |
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267 # XXX Test the repr of a type with a really long tp_name but with no |
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268 # tp_repr. WIBNI we had ::Inline? :) |
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269 pass |
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270 |
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271 def test_class(self): |
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272 touch(os.path.join(self.subpkgname, 'bar'+os.extsep+'py'), '''\ |
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273 class bar: |
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274 pass |
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275 ''') |
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276 from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import bar |
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277 # Module name may be prefixed with "test.", depending on how run. |
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278 self.failUnless(repr(bar.bar).startswith( |
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279 "<class %s.bar at 0x" % bar.__name__)) |
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280 |
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281 def test_instance(self): |
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282 touch(os.path.join(self.subpkgname, 'baz'+os.extsep+'py'), '''\ |
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283 class baz: |
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284 pass |
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285 ''') |
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286 from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import baz |
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287 ibaz = baz.baz() |
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288 self.failUnless(repr(ibaz).startswith( |
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289 "<%s.baz instance at 0x" % baz.__name__)) |
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290 |
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291 def test_method(self): |
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292 eq = self.assertEquals |
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293 touch(os.path.join(self.subpkgname, 'qux'+os.extsep+'py'), '''\ |
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294 class aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: |
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295 def amethod(self): pass |
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296 ''') |
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297 from areallylongpackageandmodulenametotestreprtruncation.areallylongpackageandmodulenametotestreprtruncation import qux |
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298 # Unbound methods first |
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299 eq(repr(qux.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.amethod), |
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300 '<unbound method aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.amethod>') |
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301 # Bound method next |
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302 iqux = qux.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa() |
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303 self.failUnless(repr(iqux.amethod).startswith( |
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304 '<bound method aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.amethod of <%s.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa instance at 0x' \ |
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305 % (qux.__name__,) )) |
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306 |
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307 def test_builtin_function(self): |
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308 # XXX test built-in functions and methods with really long names |
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309 pass |
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310 |
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311 class ClassWithRepr: |
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312 def __init__(self, s): |
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313 self.s = s |
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314 def __repr__(self): |
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315 return "ClassWithLongRepr(%r)" % self.s |
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316 |
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317 |
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318 class ClassWithFailingRepr: |
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319 def __repr__(self): |
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320 raise Exception("This should be caught by Repr.repr_instance") |
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321 |
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322 |
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323 def test_main(): |
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324 run_unittest(ReprTests) |
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325 if os.name != 'mac': |
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326 run_unittest(LongReprTest) |
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327 |
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328 |
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329 if __name__ == "__main__": |
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330 test_main() |