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@@ -1,443 +1,439 b'' | |||
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1 | 1 | """ |
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2 | 2 | Test which prefilter transformations get called for various input lines. |
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3 | 3 | Note that this does *not* test the transformations themselves -- it's just |
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4 | 4 | verifying that a particular combination of, e.g. config options and escape |
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5 | 5 | chars trigger the proper handle_X transform of the input line. |
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6 | 6 | |
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7 | 7 | Usage: run from the command line with *normal* python, not ipython: |
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8 | 8 | > python test_prefilter.py |
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9 | 9 | |
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10 | 10 | Fairly quiet output by default. Pass in -v to get everyone's favorite dots. |
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11 | 11 | """ |
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12 | 12 | |
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13 | 13 | # The prefilter always ends in a call to some self.handle_X method. We swap |
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14 | 14 | # all of those out so that we can capture which one was called. |
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15 | 15 | |
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16 | 16 | import sys |
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17 | 17 | sys.path.append('..') |
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18 | 18 | import IPython |
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19 | 19 | import IPython.ipapi |
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20 | 20 | |
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21 | 21 | verbose = False |
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22 | 22 | if len(sys.argv) > 1: |
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23 | 23 | if sys.argv[1] == '-v': |
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24 | 24 | sys.argv = sys.argv[:-1] # IPython is confused by -v, apparently |
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25 | 25 | verbose = True |
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26 | 26 | |
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27 | 27 | IPython.Shell.start() |
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28 | 28 | |
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29 | 29 | ip = IPython.ipapi.get() |
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30 | 30 | |
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31 | 31 | # Collect failed tests + stats and print them at the end |
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32 | 32 | failures = [] |
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33 | 33 | num_tests = 0 |
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34 | 34 | |
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35 | 35 | # Store the results in module vars as we go |
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36 | 36 | last_line = None |
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37 | 37 | handler_called = None |
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38 | 38 | def install_mock_handler(name): |
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39 | 39 | """Swap out one of the IP.handle_x methods with a function which can |
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40 | 40 | record which handler was called and what line was produced. The mock |
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41 | 41 | handler func always returns '', which causes ipython to cease handling |
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42 | 42 | the string immediately. That way, that it doesn't echo output, raise |
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43 | 43 | exceptions, etc. But do note that testing multiline strings thus gets |
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44 | 44 | a bit hard.""" |
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45 | 45 | def mock_handler(self, line, continue_prompt=None, |
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46 | 46 | pre=None,iFun=None,theRest=None, |
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47 | 47 | obj=None): |
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48 | 48 | #print "Inside %s with '%s'" % (name, line) |
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49 | 49 | global last_line, handler_called |
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50 | 50 | last_line = line |
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51 | 51 | handler_called = name |
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52 | 52 | return '' |
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53 | 53 | mock_handler.name = name |
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54 | 54 | setattr(IPython.iplib.InteractiveShell, name, mock_handler) |
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55 | 55 | |
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56 | 56 | install_mock_handler('handle_normal') |
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57 | 57 | install_mock_handler('handle_auto') |
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58 | 58 | install_mock_handler('handle_magic') |
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59 | 59 | install_mock_handler('handle_help') |
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60 | 60 | install_mock_handler('handle_shell_escape') |
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61 | 61 | install_mock_handler('handle_alias') |
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62 | 62 | install_mock_handler('handle_emacs') |
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63 | 63 | |
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64 | 64 | |
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65 | 65 | def reset_esc_handlers(): |
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66 | 66 | """The escape handlers are stored in a hash (as an attribute of the |
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67 | 67 | InteractiveShell *instance*), so we have to rebuild that hash to get our |
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68 | 68 | new handlers in there.""" |
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69 | 69 | s = ip.IP |
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70 | 70 | s.esc_handlers = {s.ESC_PAREN : s.handle_auto, |
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71 | 71 | s.ESC_QUOTE : s.handle_auto, |
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72 | 72 | s.ESC_QUOTE2 : s.handle_auto, |
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73 | 73 | s.ESC_MAGIC : s.handle_magic, |
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74 | 74 | s.ESC_HELP : s.handle_help, |
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75 | 75 | s.ESC_SHELL : s.handle_shell_escape, |
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76 | 76 | s.ESC_SH_CAP : s.handle_shell_escape, |
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77 | 77 | } |
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78 | 78 | reset_esc_handlers() |
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79 | 79 | |
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80 | 80 | # This is so I don't have to quote over and over. Gotta be a better way. |
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81 | 81 | handle_normal = 'handle_normal' |
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82 | 82 | handle_auto = 'handle_auto' |
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83 | 83 | handle_magic = 'handle_magic' |
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84 | 84 | handle_help = 'handle_help' |
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85 | 85 | handle_shell_escape = 'handle_shell_escape' |
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86 | 86 | handle_alias = 'handle_alias' |
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87 | 87 | handle_emacs = 'handle_emacs' |
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88 | 88 | |
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89 | 89 | def check(assertion, failure_msg): |
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90 | 90 | """Check a boolean assertion and fail with a message if necessary. Store |
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91 | 91 | an error essage in module-level failures list in case of failure. Print |
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92 | 92 | '.' or 'F' if module var Verbose is true. |
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93 | 93 | """ |
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94 | 94 | global num_tests |
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95 | 95 | num_tests += 1 |
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96 | 96 | if assertion: |
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97 | 97 | if verbose: |
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98 | 98 | sys.stdout.write('.') |
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99 | 99 | sys.stdout.flush() |
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100 | 100 | else: |
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101 | 101 | if verbose: |
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102 | 102 | sys.stdout.write('F') |
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103 | 103 | sys.stdout.flush() |
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104 | 104 | failures.append(failure_msg) |
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105 | 105 | |
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106 | 106 | |
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107 | 107 | def check_handler(expected_handler, line): |
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108 | 108 | """Verify that the expected hander was called (for the given line, |
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109 | 109 | passed in for failure reporting). |
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110 | 110 | |
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111 | 111 | Pulled out to its own function so that tests which don't use |
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112 | 112 | run_handler_tests can still take advantage of it.""" |
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113 | 113 | check(handler_called == expected_handler, |
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114 | 114 | "Expected %s to be called for %s, " |
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115 | 115 | "instead %s called" % (expected_handler, |
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116 | 116 | repr(line), |
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117 | 117 | handler_called)) |
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118 | 118 | |
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119 | 119 | |
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120 | 120 | def run_handler_tests(h_tests): |
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121 | 121 | """Loop through a series of (input_line, handler_name) pairs, verifying |
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122 | 122 | that, for each ip calls the given handler for the given line. |
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123 | 123 | |
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124 | 124 | The verbose complaint includes the line passed in, so if that line can |
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125 | 125 | include enough info to find the error, the tests are modestly |
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126 | 126 | self-documenting. |
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127 | 127 | """ |
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128 | 128 | for ln, expected_handler in h_tests: |
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129 | 129 | global handler_called |
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130 | 130 | handler_called = None |
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131 | 131 | ip.runlines(ln) |
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132 | 132 | check_handler(expected_handler, ln) |
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133 | 133 | |
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134 | 134 | def run_one_test(ln, expected_handler): |
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135 | 135 | run_handler_tests([(ln, expected_handler)]) |
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136 | 136 | |
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137 | 137 | |
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138 | 138 | # ========================================= |
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139 | 139 | # Tests |
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140 | 140 | # ========================================= |
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141 | 141 | |
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142 | 142 | |
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143 | 143 | # Fundamental escape characters + whitespace & misc |
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144 | 144 | # ================================================= |
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145 | 145 | esc_handler_tests = [ |
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146 | 146 | ( '?thing', handle_help, ), |
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147 | 147 | ( 'thing?', handle_help ), # '?' can trail... |
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148 | 148 | ( 'thing!', handle_normal), # but only '?' can trail |
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149 | 149 | ( ' ?thing', handle_normal), # leading whitespace turns off esc chars |
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150 | 150 | ( '!ls', handle_shell_escape), |
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151 | 151 | ( '! true', handle_shell_escape), |
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152 | 152 | ( '!! true', handle_shell_escape), |
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153 | 153 | ( '%magic', handle_magic), |
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154 | 154 | # XXX Possibly, add test for /,; once those are unhooked from %autocall |
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155 | 155 | ( 'emacs_mode # PYTHON-MODE', handle_emacs ), |
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156 | 156 | ( ' ', handle_normal), |
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157 | 157 | |
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158 | 158 | # Trailing qmark combos. Odd special cases abound |
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159 | 159 | |
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160 | # The key is: we don't want the trailing ? to trigger help if it's a | |
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161 | # part of a shell glob (like, e.g. '!ls file.?'). Instead, we want the | |
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162 | # shell handler to be called. Due to subtleties of the input string | |
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163 | # parsing, however, we only call the shell handler if the trailing ? is | |
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164 | # part of something whitespace-separated from the !cmd. See examples. | |
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165 | ( '!thing?', handle_help), | |
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160 | # ! always takes priority! | |
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161 | ( '!thing?', handle_shell_escape), | |
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166 | 162 | ( '!thing arg?', handle_shell_escape), |
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167 | ( '!!thing?', handle_help), | |
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163 | ( '!!thing?', handle_shell_escape), | |
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168 | 164 | ( '!!thing arg?', handle_shell_escape), |
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169 | 165 | |
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170 | 166 | # For all other leading esc chars, we always trigger help |
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171 | 167 | ( '%cmd?', handle_help), |
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172 | 168 | ( '%cmd ?', handle_help), |
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173 | 169 | ( '/cmd?', handle_help), |
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174 | 170 | ( '/cmd ?', handle_help), |
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175 | 171 | ( ';cmd?', handle_help), |
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176 | 172 | ( ',cmd?', handle_help), |
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177 | 173 | ] |
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178 | 174 | run_handler_tests(esc_handler_tests) |
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179 | 175 | |
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180 | 176 | |
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181 | 177 | |
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182 | 178 | # Shell Escapes in Multi-line statements |
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183 | 179 | # ====================================== |
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184 | 180 | # |
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185 | 181 | # We can't test this via runlines, since the hacked-over-for-testing |
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186 | 182 | # handlers all return None, so continue_prompt never becomes true. Instead |
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187 | 183 | # we drop into prefilter directly and pass in continue_prompt. |
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188 | 184 | |
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189 | 185 | old_mls = ip.options.multi_line_specials |
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190 | 186 | for ln in [ ' !ls $f multi_line_specials %s', |
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191 | 187 | ' !!ls $f multi_line_specials %s', # !! escapes work on mls |
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192 | 188 | # Trailing ? doesn't trigger help: |
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193 | 189 | ' !ls $f multi_line_specials %s ?', |
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194 | 190 | ' !!ls $f multi_line_specials %s ?', |
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195 | 191 | ]: |
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196 | 192 | ip.options.multi_line_specials = 1 |
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197 | 193 | on_ln = ln % 'on' |
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198 | 194 | ignore = ip.IP.prefilter(on_ln, continue_prompt=True) |
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199 | 195 | check_handler(handle_shell_escape, on_ln) |
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200 | 196 | |
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201 | 197 | ip.options.multi_line_specials = 0 |
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202 | 198 | off_ln = ln % 'off' |
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203 | 199 | ignore = ip.IP.prefilter(off_ln, continue_prompt=True) |
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204 | 200 | check_handler(handle_normal, off_ln) |
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205 | 201 | |
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206 | 202 | ip.options.multi_line_specials = old_mls |
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207 | 203 | |
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208 | 204 | |
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209 | 205 | # Automagic |
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210 | 206 | # ========= |
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211 | 207 | |
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212 | 208 | # Pick one magic fun and one non_magic fun, make sure both exist |
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213 | 209 | assert hasattr(ip.IP, "magic_cpaste") |
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214 | 210 | assert not hasattr(ip.IP, "magic_does_not_exist") |
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215 | 211 | ip.options.autocall = 0 # gotta have this off to get handle_normal |
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216 | 212 | ip.options.automagic = 0 |
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217 | 213 | run_handler_tests([ |
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218 | 214 | # Without automagic, only shows up with explicit escape |
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219 | 215 | ( 'cpaste', handle_normal), |
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220 | 216 | ( '%cpaste', handle_magic), |
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221 | 217 | ( '%does_not_exist', handle_magic), |
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222 | 218 | ]) |
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223 | 219 | ip.options.automagic = 1 |
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224 | 220 | run_handler_tests([ |
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225 | 221 | ( 'cpaste', handle_magic), |
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226 | 222 | ( '%cpaste', handle_magic), |
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227 | 223 | ( 'does_not_exist', handle_normal), |
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228 | 224 | ( '%does_not_exist', handle_magic), |
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229 | 225 | ( 'cd /', handle_magic), |
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230 | 226 | ( 'cd = 2', handle_normal), |
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231 | 227 | ( 'r', handle_magic), |
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232 | 228 | ( 'r thing', handle_magic), |
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233 | 229 | ( 'r"str"', handle_normal), |
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234 | 230 | ]) |
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235 | 231 | |
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236 | 232 | # If next elt starts with anything that could be an assignment, func call, |
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237 | 233 | # etc, we don't call the magic func, unless explicitly escaped to do so. |
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238 | 234 | #magic_killing_tests = [] |
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239 | 235 | #for c in list('!=()<>,'): |
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240 | 236 | # magic_killing_tests.append(('cpaste %s killed_automagic' % c, handle_normal)) |
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241 | 237 | # magic_killing_tests.append(('%%cpaste %s escaped_magic' % c, handle_magic)) |
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242 | 238 | #run_handler_tests(magic_killing_tests) |
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243 | 239 | |
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244 | 240 | # magic on indented continuation lines -- on iff multi_line_specials == 1 |
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245 | 241 | ip.options.multi_line_specials = 0 |
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246 | 242 | ln = ' cpaste multi_line off kills magic' |
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247 | 243 | ignore = ip.IP.prefilter(ln, continue_prompt=True) |
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248 | 244 | check_handler(handle_normal, ln) |
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249 | 245 | |
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250 | 246 | ip.options.multi_line_specials = 1 |
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251 | 247 | ln = ' cpaste multi_line on enables magic' |
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252 | 248 | ignore = ip.IP.prefilter(ln, continue_prompt=True) |
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253 | 249 | check_handler(handle_magic, ln) |
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254 | 250 | |
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255 | 251 | # user namespace shadows the magic one unless shell escaped |
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256 | 252 | ip.user_ns['cpaste'] = 'user_ns' |
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257 | 253 | run_handler_tests([ |
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258 | 254 | ( 'cpaste', handle_normal), |
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259 | 255 | ( '%cpaste', handle_magic)]) |
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260 | 256 | del ip.user_ns['cpaste'] |
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261 | 257 | |
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262 | 258 | |
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263 | 259 | |
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264 | 260 | # Check for !=() turning off .ofind |
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265 | 261 | # ================================= |
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266 | 262 | class AttributeMutator(object): |
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267 | 263 | """A class which will be modified on attribute access, to test ofind""" |
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268 | 264 | def __init__(self): |
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269 | 265 | self.called = False |
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270 | 266 | |
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271 | 267 | def getFoo(self): self.called = True |
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272 | 268 | foo = property(getFoo) |
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273 | 269 | |
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274 | 270 | attr_mutator = AttributeMutator() |
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275 | 271 | ip.to_user_ns('attr_mutator') |
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276 | 272 | |
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277 | 273 | ip.options.autocall = 1 |
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278 | 274 | |
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279 | 275 | run_one_test('attr_mutator.foo should mutate', handle_normal) |
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280 | 276 | check(attr_mutator.called, 'ofind should be called in absence of assign characters') |
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281 | 277 | |
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282 | 278 | for c in list('!=()<>+*/%^&|'): |
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283 | 279 | attr_mutator.called = False |
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284 | 280 | run_one_test('attr_mutator.foo %s should *not* mutate' % c, handle_normal) |
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285 | 281 | run_one_test('attr_mutator.foo%s should *not* mutate' % c, handle_normal) |
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286 | 282 | |
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287 | 283 | check(not attr_mutator.called, |
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288 | 284 | 'ofind should not be called near character %s' % c) |
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289 | 285 | |
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290 | 286 | |
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291 | 287 | |
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292 | 288 | # Alias expansion |
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293 | 289 | # =============== |
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294 | 290 | |
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295 | 291 | # With autocall on or off, aliases should be shadowed by user, internal and |
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296 | 292 | # __builtin__ namespaces |
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297 | 293 | # |
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298 | 294 | # XXX Can aliases have '.' in their name? With autocall off, that works, |
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299 | 295 | # with autocall on, it doesn't. Hmmm. |
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300 | 296 | import __builtin__ |
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301 | 297 | for ac_state in [0,1]: |
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302 | 298 | ip.options.autocall = ac_state |
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303 | 299 | ip.IP.alias_table['alias_cmd'] = 'alias_result' |
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304 | 300 | ip.IP.alias_table['alias_head.with_dot'] = 'alias_result' |
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305 | 301 | run_handler_tests([ |
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306 | 302 | ("alias_cmd", handle_alias), |
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307 | 303 | # XXX See note above |
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308 | 304 | #("alias_head.with_dot unshadowed, autocall=%s" % ac_state, handle_alias), |
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309 | 305 | ("alias_cmd.something aliases must match whole expr", handle_normal), |
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310 | 306 | ("alias_cmd /", handle_alias), |
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311 | 307 | ]) |
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312 | 308 | |
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313 | 309 | for ns in [ip.user_ns, ip.IP.internal_ns, __builtin__.__dict__ ]: |
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314 | 310 | ns['alias_cmd'] = 'a user value' |
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315 | 311 | ns['alias_head'] = 'a user value' |
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316 | 312 | run_handler_tests([ |
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317 | 313 | ("alias_cmd", handle_normal), |
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318 | 314 | ("alias_head.with_dot", handle_normal)]) |
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319 | 315 | del ns['alias_cmd'] |
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320 | 316 | del ns['alias_head'] |
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321 | 317 | |
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322 | 318 | ip.options.autocall = 1 |
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323 | 319 | |
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324 | 320 | |
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325 | 321 | |
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326 | 322 | |
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327 | 323 | # Autocall |
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328 | 324 | # ======== |
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329 | 325 | |
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330 | 326 | # For all the tests below, 'len' is callable / 'thing' is not |
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331 | 327 | |
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332 | 328 | # Objects which are instances of IPyAutocall are *always* autocalled |
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333 | 329 | import IPython.ipapi |
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334 | 330 | class Autocallable(IPython.ipapi.IPyAutocall): |
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335 | 331 | def __call__(self): |
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336 | 332 | return "called" |
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337 | 333 | |
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338 | 334 | autocallable = Autocallable() |
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339 | 335 | ip.to_user_ns('autocallable') |
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340 | 336 | |
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341 | 337 | |
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342 | 338 | # First, with autocalling fully off |
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343 | 339 | ip.options.autocall = 0 |
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344 | 340 | run_handler_tests( [ |
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345 | 341 | # With no escapes, no autocalling expansions happen, callable or not, |
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346 | 342 | # unless the obj extends IPyAutocall |
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347 | 343 | ( 'len autocall_0', handle_normal), |
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348 | 344 | ( 'thing autocall_0', handle_normal), |
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349 | 345 | ( 'autocallable', handle_auto), |
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350 | 346 | |
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351 | 347 | # With explicit escapes, callable and non-callables both get expanded, |
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352 | 348 | # regardless of the %autocall setting: |
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353 | 349 | ( '/len autocall_0', handle_auto), |
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354 | 350 | ( ',len autocall_0 b0', handle_auto), |
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355 | 351 | ( ';len autocall_0 b0', handle_auto), |
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356 | 352 | |
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357 | 353 | ( '/thing autocall_0', handle_auto), |
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358 | 354 | ( ',thing autocall_0 b0', handle_auto), |
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359 | 355 | ( ';thing autocall_0 b0', handle_auto), |
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360 | 356 | |
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361 | 357 | # Explicit autocall should not trigger if there is leading whitespace |
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362 | 358 | ( ' /len autocall_0', handle_normal), |
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363 | 359 | ( ' ;len autocall_0', handle_normal), |
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364 | 360 | ( ' ,len autocall_0', handle_normal), |
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365 | 361 | ( ' / len autocall_0', handle_normal), |
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366 | 362 | |
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367 | 363 | # But should work if the whitespace comes after the esc char |
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368 | 364 | ( '/ len autocall_0', handle_auto), |
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369 | 365 | ( '; len autocall_0', handle_auto), |
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370 | 366 | ( ', len autocall_0', handle_auto), |
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371 | 367 | ( '/ len autocall_0', handle_auto), |
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372 | 368 | ]) |
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373 | 369 | |
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374 | 370 | |
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375 | 371 | # Now, with autocall in default, 'smart' mode |
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376 | 372 | ip.options.autocall = 1 |
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377 | 373 | run_handler_tests( [ |
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378 | 374 | # Autocalls without escapes -- only expand if it's callable |
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379 | 375 | ( 'len a1', handle_auto), |
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380 | 376 | ( 'thing a1', handle_normal), |
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381 | 377 | ( 'autocallable', handle_auto), |
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382 | 378 | |
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383 | 379 | # As above, all explicit escapes generate auto-calls, callable or not |
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384 | 380 | ( '/len a1', handle_auto), |
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385 | 381 | ( ',len a1 b1', handle_auto), |
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386 | 382 | ( ';len a1 b1', handle_auto), |
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387 | 383 | ( '/thing a1', handle_auto), |
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388 | 384 | ( ',thing a1 b1', handle_auto), |
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389 | 385 | ( ';thing a1 b1', handle_auto), |
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390 | 386 | |
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391 | 387 | # Autocalls only happen on things which look like funcs, even if |
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392 | 388 | # explicitly requested. Which, in this case means they look like a |
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393 | 389 | # sequence of identifiers and . attribute references. Possibly the |
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394 | 390 | # second of these two should trigger handle_auto. But not for now. |
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395 | 391 | ( '"abc".join range(4)', handle_normal), |
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396 | 392 | ( '/"abc".join range(4)', handle_normal), |
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397 | 393 | ]) |
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398 | 394 | |
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399 | 395 | |
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400 | 396 | # No tests for autocall = 2, since the extra magic there happens inside the |
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401 | 397 | # handle_auto function, which our test doesn't examine. |
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402 | 398 | |
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403 | 399 | # Note that we leave autocall in default, 1, 'smart' mode |
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404 | 400 | |
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405 | 401 | |
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406 | 402 | # Autocall / Binary operators |
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407 | 403 | # ========================== |
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408 | 404 | |
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409 | 405 | # Even with autocall on, 'len in thing' won't transform. |
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410 | 406 | # But ';len in thing' will |
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411 | 407 | |
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412 | 408 | # Note, the tests below don't check for multi-char ops. It could. |
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413 | 409 | |
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414 | 410 | # XXX % is a binary op and should be in the list, too, but fails |
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415 | 411 | bin_ops = list(r'<>,&^|*/+-') + 'is not in and or'.split() |
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416 | 412 | bin_tests = [] |
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417 | 413 | for b in bin_ops: |
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418 | 414 | bin_tests.append(('len %s binop_autocall' % b, handle_normal)) |
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419 | 415 | bin_tests.append((';len %s binop_autocall' % b, handle_auto)) |
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420 | 416 | bin_tests.append((',len %s binop_autocall' % b, handle_auto)) |
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421 | 417 | bin_tests.append(('/len %s binop_autocall' % b, handle_auto)) |
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422 | 418 | |
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423 | 419 | # Who loves auto-generating tests? |
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424 | 420 | run_handler_tests(bin_tests) |
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425 | 421 | |
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426 | 422 | |
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427 | 423 | # Possibly add tests for namespace shadowing (really ofind's business?). |
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428 | 424 | # |
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429 | 425 | # user > ipython internal > python builtin > alias > magic |
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430 | 426 | |
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431 | 427 | |
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432 | 428 | # ============ |
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433 | 429 | # Test Summary |
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434 | 430 | # ============ |
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435 | 431 | num_f = len(failures) |
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436 | 432 | if verbose: |
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437 | 433 | |
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438 | 434 | print "%s tests run, %s failure%s" % (num_tests, |
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439 | 435 | num_f, |
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440 | 436 | num_f != 1 and "s" or "") |
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441 | 437 | for f in failures: |
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442 | 438 | print f |
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443 | 439 |
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