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@@ -0,0 +1,217 b'' | |||
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1 | ''' A decorator-based method of constructing IPython magics with `argparse` | |
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2 | option handling. | |
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3 | ||
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4 | New magic functions can be defined like so:: | |
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5 | ||
|
6 | from IPython.core.magic_arguments import (argument, magic_arguments, | |
|
7 | parse_argstring) | |
|
8 | ||
|
9 | @magic_arguments() | |
|
10 | @argument('-o', '--option', help='An optional argument.') | |
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11 | @argument('arg', type=int, help='An integer positional argument.') | |
|
12 | def magic_cool(self, arg): | |
|
13 | """ A really cool magic command. | |
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14 | ||
|
15 | """ | |
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16 | args = parse_argstring(magic_cool, arg) | |
|
17 | ... | |
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18 | ||
|
19 | The `@magic_arguments` decorator marks the function as having argparse arguments. | |
|
20 | The `@argument` decorator adds an argument using the same syntax as argparse's | |
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21 | `add_argument()` method. More sophisticated uses may also require the | |
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22 | `@argument_group` or `@kwds` decorator to customize the formatting and the | |
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23 | parsing. | |
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24 | ||
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25 | Help text for the magic is automatically generated from the docstring and the | |
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26 | arguments:: | |
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27 | ||
|
28 | In[1]: %cool? | |
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29 | %cool [-o OPTION] arg | |
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30 | ||
|
31 | A really cool magic command. | |
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32 | ||
|
33 | positional arguments: | |
|
34 | arg An integer positional argument. | |
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35 | ||
|
36 | optional arguments: | |
|
37 | -o OPTION, --option OPTION | |
|
38 | An optional argument. | |
|
39 | ||
|
40 | ''' | |
|
41 | #----------------------------------------------------------------------------- | |
|
42 | # Copyright (c) 2010, IPython Development Team. | |
|
43 | # | |
|
44 | # Distributed under the terms of the Modified BSD License. | |
|
45 | # | |
|
46 | # The full license is in the file COPYING.txt, distributed with this software. | |
|
47 | #----------------------------------------------------------------------------- | |
|
48 | ||
|
49 | # Our own imports | |
|
50 | from IPython.external import argparse | |
|
51 | from IPython.core.error import UsageError | |
|
52 | from IPython.utils.process import arg_split | |
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53 | ||
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54 | ||
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55 | class MagicArgumentParser(argparse.ArgumentParser): | |
|
56 | """ An ArgumentParser tweaked for use by IPython magics. | |
|
57 | """ | |
|
58 | def __init__(self, | |
|
59 | prog=None, | |
|
60 | usage=None, | |
|
61 | description=None, | |
|
62 | epilog=None, | |
|
63 | version=None, | |
|
64 | parents=None, | |
|
65 | formatter_class=argparse.HelpFormatter, | |
|
66 | prefix_chars='-', | |
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67 | argument_default=None, | |
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68 | conflict_handler='error', | |
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69 | add_help=False): | |
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70 | if parents is None: | |
|
71 | parents = [] | |
|
72 | super(MagicArgumentParser, self).__init__(prog=prog, usage=usage, | |
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73 | description=description, epilog=epilog, version=version, | |
|
74 | parents=parents, formatter_class=formatter_class, | |
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75 | prefix_chars=prefix_chars, argument_default=argument_default, | |
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76 | conflict_handler=conflict_handler, add_help=add_help) | |
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77 | ||
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78 | def error(self, message): | |
|
79 | """ Raise a catchable error instead of exiting. | |
|
80 | """ | |
|
81 | raise UsageError(message) | |
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82 | ||
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83 | def parse_argstring(self, argstring): | |
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84 | """ Split a string into an argument list and parse that argument list. | |
|
85 | """ | |
|
86 | argv = arg_split(argstring) | |
|
87 | return self.parse_args(argv) | |
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88 | ||
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89 | ||
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90 | def construct_parser(magic_func): | |
|
91 | """ Construct an argument parser using the function decorations. | |
|
92 | """ | |
|
93 | kwds = getattr(magic_func, 'argcmd_kwds', {}) | |
|
94 | if 'description' not in kwds: | |
|
95 | kwds['description'] = getattr(magic_func, '__doc__', None) | |
|
96 | arg_name = real_name(magic_func) | |
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97 | parser = MagicArgumentParser(arg_name, **kwds) | |
|
98 | # Reverse the list of decorators in order to apply them in the | |
|
99 | # order in which they appear in the source. | |
|
100 | group = None | |
|
101 | for deco in magic_func.decorators[::-1]: | |
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102 | result = deco.add_to_parser(parser, group) | |
|
103 | if result is not None: | |
|
104 | group = result | |
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105 | ||
|
106 | # Replace the starting 'usage: ' with IPython's %. | |
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107 | help_text = parser.format_help() | |
|
108 | if help_text.startswith('usage: '): | |
|
109 | help_text = help_text.replace('usage: ', '%', 1) | |
|
110 | else: | |
|
111 | help_text = '%' + help_text | |
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112 | ||
|
113 | # Replace the magic function's docstring with the full help text. | |
|
114 | magic_func.__doc__ = help_text | |
|
115 | ||
|
116 | return parser | |
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117 | ||
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118 | ||
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119 | def parse_argstring(magic_func, argstring): | |
|
120 | """ Parse the string of arguments for the given magic function. | |
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121 | """ | |
|
122 | return magic_func.parser.parse_argstring(argstring) | |
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123 | ||
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124 | ||
|
125 | def real_name(magic_func): | |
|
126 | """ Find the real name of the magic. | |
|
127 | """ | |
|
128 | magic_name = magic_func.__name__ | |
|
129 | if magic_name.startswith('magic_'): | |
|
130 | magic_name = magic_name[len('magic_'):] | |
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131 | return getattr(magic_func, 'argcmd_name', magic_name) | |
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132 | ||
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133 | ||
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134 | class ArgDecorator(object): | |
|
135 | """ Base class for decorators to add ArgumentParser information to a method. | |
|
136 | """ | |
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137 | ||
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138 | def __call__(self, func): | |
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139 | if not getattr(func, 'has_arguments', False): | |
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140 | func.has_arguments = True | |
|
141 | func.decorators = [] | |
|
142 | func.decorators.append(self) | |
|
143 | return func | |
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144 | ||
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145 | def add_to_parser(self, parser, group): | |
|
146 | """ Add this object's information to the parser, if necessary. | |
|
147 | """ | |
|
148 | pass | |
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149 | ||
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150 | ||
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151 | class magic_arguments(ArgDecorator): | |
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152 | """ Mark the magic as having argparse arguments and possibly adjust the | |
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153 | name. | |
|
154 | """ | |
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155 | ||
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156 | def __init__(self, name=None): | |
|
157 | self.name = name | |
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158 | ||
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159 | def __call__(self, func): | |
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160 | if not getattr(func, 'has_arguments', False): | |
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161 | func.has_arguments = True | |
|
162 | func.decorators = [] | |
|
163 | if self.name is not None: | |
|
164 | func.argcmd_name = self.name | |
|
165 | # This should be the first decorator in the list of decorators, thus the | |
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166 | # last to execute. Build the parser. | |
|
167 | func.parser = construct_parser(func) | |
|
168 | return func | |
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169 | ||
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170 | ||
|
171 | class argument(ArgDecorator): | |
|
172 | """ Store arguments and keywords to pass to add_argument(). | |
|
173 | ||
|
174 | Instances also serve to decorate command methods. | |
|
175 | """ | |
|
176 | def __init__(self, *args, **kwds): | |
|
177 | self.args = args | |
|
178 | self.kwds = kwds | |
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179 | ||
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180 | def add_to_parser(self, parser, group): | |
|
181 | """ Add this object's information to the parser. | |
|
182 | """ | |
|
183 | if group is not None: | |
|
184 | parser = group | |
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185 | parser.add_argument(*self.args, **self.kwds) | |
|
186 | return None | |
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187 | ||
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188 | ||
|
189 | class argument_group(ArgDecorator): | |
|
190 | """ Store arguments and keywords to pass to add_argument_group(). | |
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191 | ||
|
192 | Instances also serve to decorate command methods. | |
|
193 | """ | |
|
194 | def __init__(self, *args, **kwds): | |
|
195 | self.args = args | |
|
196 | self.kwds = kwds | |
|
197 | ||
|
198 | def add_to_parser(self, parser, group): | |
|
199 | """ Add this object's information to the parser. | |
|
200 | """ | |
|
201 | return parser.add_argument_group(*self.args, **self.kwds) | |
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202 | ||
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203 | ||
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204 | class kwds(ArgDecorator): | |
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205 | """ Provide other keywords to the sub-parser constructor. | |
|
206 | """ | |
|
207 | def __init__(self, **kwds): | |
|
208 | self.kwds = kwds | |
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209 | ||
|
210 | def __call__(self, func): | |
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211 | func = super(kwds, self).__call__(func) | |
|
212 | func.argcmd_kwds = self.kwds | |
|
213 | return func | |
|
214 | ||
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215 | ||
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216 | __all__ = ['magic_arguments', 'argument', 'argument_group', 'kwds', | |
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217 | 'parse_argstring'] |
@@ -0,0 +1,121 b'' | |||
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1 | #----------------------------------------------------------------------------- | |
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2 | # Copyright (c) 2010, IPython Development Team. | |
|
3 | # | |
|
4 | # Distributed under the terms of the Modified BSD License. | |
|
5 | # | |
|
6 | # The full license is in the file COPYING.txt, distributed with this software. | |
|
7 | #----------------------------------------------------------------------------- | |
|
8 | ||
|
9 | from nose.tools import assert_equal, assert_true | |
|
10 | ||
|
11 | from IPython.external import argparse | |
|
12 | from IPython.core.magic_arguments import (argument, argument_group, kwds, | |
|
13 | magic_arguments, parse_argstring, real_name) | |
|
14 | from IPython.testing.decorators import parametric | |
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15 | ||
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16 | ||
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17 | @magic_arguments() | |
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18 | @argument('-f', '--foo', help="an argument") | |
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19 | def magic_foo1(self, args): | |
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20 | """ A docstring. | |
|
21 | """ | |
|
22 | return parse_argstring(magic_foo1, args) | |
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23 | ||
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24 | ||
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25 | @magic_arguments() | |
|
26 | def magic_foo2(self, args): | |
|
27 | """ A docstring. | |
|
28 | """ | |
|
29 | return parse_argstring(magic_foo2, args) | |
|
30 | ||
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31 | ||
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32 | @magic_arguments() | |
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33 | @argument('-f', '--foo', help="an argument") | |
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34 | @argument_group('Group') | |
|
35 | @argument('-b', '--bar', help="a grouped argument") | |
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36 | @argument_group('Second Group') | |
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37 | @argument('-z', '--baz', help="another grouped argument") | |
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38 | def magic_foo3(self, args): | |
|
39 | """ A docstring. | |
|
40 | """ | |
|
41 | return parse_argstring(magic_foo3, args) | |
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42 | ||
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43 | ||
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44 | @magic_arguments() | |
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45 | @kwds(argument_default=argparse.SUPPRESS) | |
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46 | @argument('-f', '--foo', help="an argument") | |
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47 | def magic_foo4(self, args): | |
|
48 | """ A docstring. | |
|
49 | """ | |
|
50 | return parse_argstring(magic_foo4, args) | |
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51 | ||
|
52 | ||
|
53 | @magic_arguments('frobnicate') | |
|
54 | @argument('-f', '--foo', help="an argument") | |
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55 | def magic_foo5(self, args): | |
|
56 | """ A docstring. | |
|
57 | """ | |
|
58 | return parse_argstring(magic_foo5, args) | |
|
59 | ||
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60 | ||
|
61 | @magic_arguments() | |
|
62 | @argument('-f', '--foo', help="an argument") | |
|
63 | def magic_magic_foo(self, args): | |
|
64 | """ A docstring. | |
|
65 | """ | |
|
66 | return parse_argstring(magic_magic_foo, args) | |
|
67 | ||
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68 | ||
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69 | @magic_arguments() | |
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70 | @argument('-f', '--foo', help="an argument") | |
|
71 | def foo(self, args): | |
|
72 | """ A docstring. | |
|
73 | """ | |
|
74 | return parse_argstring(foo, args) | |
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75 | ||
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76 | ||
|
77 | @parametric | |
|
78 | def test_magic_arguments(): | |
|
79 | # Ideally, these would be doctests, but I could not get it to work. | |
|
80 | yield assert_equal(magic_foo1.__doc__, '%foo1 [-f FOO]\n\nA docstring.\n\noptional arguments:\n -f FOO, --foo FOO an argument\n') | |
|
81 | yield assert_equal(getattr(magic_foo1, 'argcmd_name', None), None) | |
|
82 | yield assert_equal(real_name(magic_foo1), 'foo1') | |
|
83 | yield assert_equal(magic_foo1(None, ''), argparse.Namespace(foo=None)) | |
|
84 | yield assert_true(hasattr(magic_foo1, 'has_arguments')) | |
|
85 | ||
|
86 | yield assert_equal(magic_foo2.__doc__, '%foo2\n\nA docstring.\n') | |
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87 | yield assert_equal(getattr(magic_foo2, 'argcmd_name', None), None) | |
|
88 | yield assert_equal(real_name(magic_foo2), 'foo2') | |
|
89 | yield assert_equal(magic_foo2(None, ''), argparse.Namespace()) | |
|
90 | yield assert_true(hasattr(magic_foo2, 'has_arguments')) | |
|
91 | ||
|
92 | yield assert_equal(magic_foo3.__doc__, '%foo3 [-f FOO] [-b BAR] [-z BAZ]\n\nA docstring.\n\noptional arguments:\n -f FOO, --foo FOO an argument\n\nGroup:\n -b BAR, --bar BAR a grouped argument\n\nSecond Group:\n -z BAZ, --baz BAZ another grouped argument\n') | |
|
93 | yield assert_equal(getattr(magic_foo3, 'argcmd_name', None), None) | |
|
94 | yield assert_equal(real_name(magic_foo3), 'foo3') | |
|
95 | yield assert_equal(magic_foo3(None, ''), | |
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96 | argparse.Namespace(bar=None, baz=None, foo=None)) | |
|
97 | yield assert_true(hasattr(magic_foo3, 'has_arguments')) | |
|
98 | ||
|
99 | yield assert_equal(magic_foo4.__doc__, '%foo4 [-f FOO]\n\nA docstring.\n\noptional arguments:\n -f FOO, --foo FOO an argument\n') | |
|
100 | yield assert_equal(getattr(magic_foo4, 'argcmd_name', None), None) | |
|
101 | yield assert_equal(real_name(magic_foo4), 'foo4') | |
|
102 | yield assert_equal(magic_foo4(None, ''), argparse.Namespace()) | |
|
103 | yield assert_true(hasattr(magic_foo4, 'has_arguments')) | |
|
104 | ||
|
105 | yield assert_equal(magic_foo5.__doc__, '%frobnicate [-f FOO]\n\nA docstring.\n\noptional arguments:\n -f FOO, --foo FOO an argument\n') | |
|
106 | yield assert_equal(getattr(magic_foo5, 'argcmd_name', None), 'frobnicate') | |
|
107 | yield assert_equal(real_name(magic_foo5), 'frobnicate') | |
|
108 | yield assert_equal(magic_foo5(None, ''), argparse.Namespace(foo=None)) | |
|
109 | yield assert_true(hasattr(magic_foo5, 'has_arguments')) | |
|
110 | ||
|
111 | yield assert_equal(magic_magic_foo.__doc__, '%magic_foo [-f FOO]\n\nA docstring.\n\noptional arguments:\n -f FOO, --foo FOO an argument\n') | |
|
112 | yield assert_equal(getattr(magic_magic_foo, 'argcmd_name', None), None) | |
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113 | yield assert_equal(real_name(magic_magic_foo), 'magic_foo') | |
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114 | yield assert_equal(magic_magic_foo(None, ''), argparse.Namespace(foo=None)) | |
|
115 | yield assert_true(hasattr(magic_magic_foo, 'has_arguments')) | |
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116 | ||
|
117 | yield assert_equal(foo.__doc__, '%foo [-f FOO]\n\nA docstring.\n\noptional arguments:\n -f FOO, --foo FOO an argument\n') | |
|
118 | yield assert_equal(getattr(foo, 'argcmd_name', None), None) | |
|
119 | yield assert_equal(real_name(foo), 'foo') | |
|
120 | yield assert_equal(foo(None, ''), argparse.Namespace(foo=None)) | |
|
121 | yield assert_true(hasattr(foo, 'has_arguments')) |
@@ -1,140 +1,146 b'' | |||
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1 | 1 | # encoding: utf-8 |
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2 | 2 | """ |
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3 | 3 | Utilities for working with external processes. |
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4 | 4 | """ |
|
5 | 5 | |
|
6 | 6 | #----------------------------------------------------------------------------- |
|
7 | 7 | # Copyright (C) 2008-2009 The IPython Development Team |
|
8 | 8 | # |
|
9 | 9 | # Distributed under the terms of the BSD License. The full license is in |
|
10 | 10 | # the file COPYING, distributed as part of this software. |
|
11 | 11 | #----------------------------------------------------------------------------- |
|
12 | 12 | |
|
13 | 13 | #----------------------------------------------------------------------------- |
|
14 | 14 | # Imports |
|
15 | 15 | #----------------------------------------------------------------------------- |
|
16 | 16 | from __future__ import print_function |
|
17 | 17 | |
|
18 | 18 | # Stdlib |
|
19 | 19 | import os |
|
20 | 20 | import sys |
|
21 | 21 | import shlex |
|
22 | 22 | |
|
23 | 23 | # Our own |
|
24 | 24 | if sys.platform == 'win32': |
|
25 | 25 | from ._process_win32 import _find_cmd, system, getoutput, AvoidUNCPath |
|
26 | 26 | else: |
|
27 | 27 | from ._process_posix import _find_cmd, system, getoutput |
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28 | 28 | |
|
29 | 29 | from ._process_common import getoutputerror |
|
30 | 30 | |
|
31 | 31 | #----------------------------------------------------------------------------- |
|
32 | 32 | # Code |
|
33 | 33 | #----------------------------------------------------------------------------- |
|
34 | 34 | |
|
35 | 35 | |
|
36 | 36 | class FindCmdError(Exception): |
|
37 | 37 | pass |
|
38 | 38 | |
|
39 | 39 | |
|
40 | 40 | def find_cmd(cmd): |
|
41 | 41 | """Find absolute path to executable cmd in a cross platform manner. |
|
42 | 42 | |
|
43 | 43 | This function tries to determine the full path to a command line program |
|
44 | 44 | using `which` on Unix/Linux/OS X and `win32api` on Windows. Most of the |
|
45 | 45 | time it will use the version that is first on the users `PATH`. If |
|
46 | 46 | cmd is `python` return `sys.executable`. |
|
47 | 47 | |
|
48 | 48 | Warning, don't use this to find IPython command line programs as there |
|
49 | 49 | is a risk you will find the wrong one. Instead find those using the |
|
50 | 50 | following code and looking for the application itself:: |
|
51 | 51 | |
|
52 | 52 | from IPython.utils.path import get_ipython_module_path |
|
53 | 53 | from IPython.utils.process import pycmd2argv |
|
54 | 54 | argv = pycmd2argv(get_ipython_module_path('IPython.frontend.terminal.ipapp')) |
|
55 | 55 | |
|
56 | 56 | Parameters |
|
57 | 57 | ---------- |
|
58 | 58 | cmd : str |
|
59 | 59 | The command line program to look for. |
|
60 | 60 | """ |
|
61 | 61 | if cmd == 'python': |
|
62 | 62 | return os.path.abspath(sys.executable) |
|
63 | 63 | try: |
|
64 | 64 | path = _find_cmd(cmd).rstrip() |
|
65 | 65 | except OSError: |
|
66 | 66 | raise FindCmdError('command could not be found: %s' % cmd) |
|
67 | 67 | # which returns empty if not found |
|
68 | 68 | if path == '': |
|
69 | 69 | raise FindCmdError('command could not be found: %s' % cmd) |
|
70 | 70 | return os.path.abspath(path) |
|
71 | 71 | |
|
72 | 72 | |
|
73 | 73 | def pycmd2argv(cmd): |
|
74 | 74 | r"""Take the path of a python command and return a list (argv-style). |
|
75 | 75 | |
|
76 | 76 | This only works on Python based command line programs and will find the |
|
77 | 77 | location of the ``python`` executable using ``sys.executable`` to make |
|
78 | 78 | sure the right version is used. |
|
79 | 79 | |
|
80 | 80 | For a given path ``cmd``, this returns [cmd] if cmd's extension is .exe, |
|
81 | 81 | .com or .bat, and [, cmd] otherwise. |
|
82 | 82 | |
|
83 | 83 | Parameters |
|
84 | 84 | ---------- |
|
85 | 85 | cmd : string |
|
86 | 86 | The path of the command. |
|
87 | 87 | |
|
88 | 88 | Returns |
|
89 | 89 | ------- |
|
90 | 90 | argv-style list. |
|
91 | 91 | """ |
|
92 | 92 | ext = os.path.splitext(cmd)[1] |
|
93 | 93 | if ext in ['.exe', '.com', '.bat']: |
|
94 | 94 | return [cmd] |
|
95 | 95 | else: |
|
96 | 96 | if sys.platform == 'win32': |
|
97 | 97 | # The -u option here turns on unbuffered output, which is required |
|
98 | 98 | # on Win32 to prevent wierd conflict and problems with Twisted. |
|
99 | 99 | # Also, use sys.executable to make sure we are picking up the |
|
100 | 100 | # right python exe. |
|
101 | 101 | return [sys.executable, '-u', cmd] |
|
102 | 102 | else: |
|
103 | 103 | return [sys.executable, cmd] |
|
104 | 104 | |
|
105 | 105 | |
|
106 | 106 | def arg_split(s, posix=False): |
|
107 | 107 | """Split a command line's arguments in a shell-like manner. |
|
108 | 108 | |
|
109 | 109 | This is a modified version of the standard library's shlex.split() |
|
110 | 110 | function, but with a default of posix=False for splitting, so that quotes |
|
111 | 111 | in inputs are respected.""" |
|
112 | 112 | |
|
113 | 113 | # Unfortunately, python's shlex module is buggy with unicode input: |
|
114 | 114 | # http://bugs.python.org/issue1170 |
|
115 | 115 | # At least encoding the input when it's unicode seems to help, but there |
|
116 | 116 | # may be more problems lurking. Apparently this is fixed in python3. |
|
117 | is_unicode = False | |
|
117 | 118 | if isinstance(s, unicode): |
|
118 | s = s.encode(sys.stdin.encoding) | |
|
119 | is_unicode = True | |
|
120 | s = s.encode('utf-8') | |
|
119 | 121 | lex = shlex.shlex(s, posix=posix) |
|
120 | 122 | lex.whitespace_split = True |
|
121 |
|
|
|
123 | tokens = list(lex) | |
|
124 | if is_unicode: | |
|
125 | # Convert the tokens back to unicode. | |
|
126 | tokens = [x.decode('utf-8') for x in tokens] | |
|
127 | return tokens | |
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122 | 128 | |
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123 | 129 | |
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124 | 130 | def abbrev_cwd(): |
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125 | 131 | """ Return abbreviated version of cwd, e.g. d:mydir """ |
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126 | 132 | cwd = os.getcwd().replace('\\','/') |
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127 | 133 | drivepart = '' |
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128 | 134 | tail = cwd |
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129 | 135 | if sys.platform == 'win32': |
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130 | 136 | if len(cwd) < 4: |
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131 | 137 | return cwd |
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132 | 138 | drivepart,tail = os.path.splitdrive(cwd) |
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133 | 139 | |
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134 | 140 | |
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135 | 141 | parts = tail.split('/') |
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136 | 142 | if len(parts) > 2: |
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137 | 143 | tail = '/'.join(parts[-2:]) |
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138 | 144 | |
|
139 | 145 | return (drivepart + ( |
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140 | 146 | cwd == '/' and '/' or tail)) |
@@ -1,95 +1,98 b'' | |||
|
1 | 1 | # encoding: utf-8 |
|
2 | 2 | """ |
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3 | 3 | Tests for platutils.py |
|
4 | 4 | """ |
|
5 | 5 | |
|
6 | 6 | #----------------------------------------------------------------------------- |
|
7 | 7 | # Copyright (C) 2008-2009 The IPython Development Team |
|
8 | 8 | # |
|
9 | 9 | # Distributed under the terms of the BSD License. The full license is in |
|
10 | 10 | # the file COPYING, distributed as part of this software. |
|
11 | 11 | #----------------------------------------------------------------------------- |
|
12 | 12 | |
|
13 | 13 | #----------------------------------------------------------------------------- |
|
14 | 14 | # Imports |
|
15 | 15 | #----------------------------------------------------------------------------- |
|
16 | 16 | |
|
17 | 17 | import sys |
|
18 | 18 | from unittest import TestCase |
|
19 | 19 | |
|
20 | 20 | import nose.tools as nt |
|
21 | 21 | |
|
22 | 22 | from IPython.utils.process import (find_cmd, FindCmdError, arg_split, |
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23 | 23 | system, getoutput, getoutputerror) |
|
24 | 24 | from IPython.testing import decorators as dec |
|
25 | 25 | from IPython.testing import tools as tt |
|
26 | 26 | |
|
27 | 27 | #----------------------------------------------------------------------------- |
|
28 | 28 | # Tests |
|
29 | 29 | #----------------------------------------------------------------------------- |
|
30 | 30 | |
|
31 | 31 | def test_find_cmd_python(): |
|
32 | 32 | """Make sure we find sys.exectable for python.""" |
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33 | 33 | nt.assert_equals(find_cmd('python'), sys.executable) |
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34 | 34 | |
|
35 | 35 | |
|
36 | 36 | @dec.skip_win32 |
|
37 | 37 | def test_find_cmd_ls(): |
|
38 | 38 | """Make sure we can find the full path to ls.""" |
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39 | 39 | path = find_cmd('ls') |
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40 | 40 | nt.assert_true(path.endswith('ls')) |
|
41 | 41 | |
|
42 | 42 | |
|
43 | 43 | def has_pywin32(): |
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44 | 44 | try: |
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45 | 45 | import win32api |
|
46 | 46 | except ImportError: |
|
47 | 47 | return False |
|
48 | 48 | return True |
|
49 | 49 | |
|
50 | 50 | |
|
51 | 51 | @dec.onlyif(has_pywin32, "This test requires win32api to run") |
|
52 | 52 | def test_find_cmd_pythonw(): |
|
53 | 53 | """Try to find pythonw on Windows.""" |
|
54 | 54 | path = find_cmd('pythonw') |
|
55 | 55 | nt.assert_true(path.endswith('pythonw.exe')) |
|
56 | 56 | |
|
57 | 57 | |
|
58 | 58 | @dec.onlyif(lambda : sys.platform != 'win32' or has_pywin32(), |
|
59 | 59 | "This test runs on posix or in win32 with win32api installed") |
|
60 | 60 | def test_find_cmd_fail(): |
|
61 | 61 | """Make sure that FindCmdError is raised if we can't find the cmd.""" |
|
62 | 62 | nt.assert_raises(FindCmdError,find_cmd,'asdfasdf') |
|
63 | 63 | |
|
64 | 64 | |
|
65 | 65 | def test_arg_split(): |
|
66 | 66 | """Ensure that argument lines are correctly split like in a shell.""" |
|
67 | 67 | tests = [['hi', ['hi']], |
|
68 | 68 | [u'hi', [u'hi']], |
|
69 | ['hello there', ['hello', 'there']], | |
|
70 | [u'h\N{LATIN SMALL LETTER A WITH CARON}llo', [u'h\N{LATIN SMALL LETTER A WITH CARON}llo']], | |
|
71 | ['something "with quotes"', ['something', '"with quotes"']], | |
|
69 | 72 | ] |
|
70 | 73 | for argstr, argv in tests: |
|
71 | 74 | nt.assert_equal(arg_split(argstr), argv) |
|
72 | 75 | |
|
73 | 76 | |
|
74 | 77 | class SubProcessTestCase(TestCase, tt.TempFileMixin): |
|
75 | 78 | def setUp(self): |
|
76 | 79 | """Make a valid python temp file.""" |
|
77 | 80 | lines = ["from __future__ import print_function", |
|
78 | 81 | "import sys", |
|
79 | 82 | "print('on stdout', end='', file=sys.stdout)", |
|
80 | 83 | "print('on stderr', end='', file=sys.stderr)", |
|
81 | 84 | "sys.stdout.flush()", |
|
82 | 85 | "sys.stderr.flush()"] |
|
83 | 86 | self.mktmp('\n'.join(lines)) |
|
84 | 87 | |
|
85 | 88 | def test_system(self): |
|
86 | 89 | system('python "%s"' % self.fname) |
|
87 | 90 | |
|
88 | 91 | def test_getoutput(self): |
|
89 | 92 | out = getoutput('python "%s"' % self.fname) |
|
90 | 93 | self.assertEquals(out, 'on stdout') |
|
91 | 94 | |
|
92 | 95 | def test_getoutput(self): |
|
93 | 96 | out, err = getoutputerror('python "%s"' % self.fname) |
|
94 | 97 | self.assertEquals(out, 'on stdout') |
|
95 | 98 | self.assertEquals(err, 'on stderr') |
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