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@@ -0,0 +1,119 b'' | |||||
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1 | # encoding: utf-8 | |||
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2 | """Tests for IPython.utils.path.py""" | |||
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3 | ||||
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4 | #----------------------------------------------------------------------------- | |||
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5 | # Copyright (C) 2008-2011 The IPython Development Team | |||
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6 | # | |||
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7 | # Distributed under the terms of the BSD License. The full license is in | |||
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8 | # the file COPYING, distributed as part of this software. | |||
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9 | #----------------------------------------------------------------------------- | |||
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10 | ||||
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11 | import nose.tools as nt | |||
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12 | ||||
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13 | from IPython.lib import latextools | |||
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14 | from IPython.testing.decorators import onlyif_cmds_exist | |||
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15 | from IPython.testing.tools import monkeypatch | |||
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16 | from IPython.utils.process import FindCmdError | |||
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17 | ||||
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18 | ||||
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19 | def test_latex_to_png_dvipng_fails_when_no_cmd(): | |||
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20 | """ | |||
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21 | `latex_to_png_dvipng` should return None when there is no required command | |||
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22 | """ | |||
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23 | for command in ['latex', 'dvipng']: | |||
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24 | yield (check_latex_to_png_dvipng_fails_when_no_cmd, command) | |||
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25 | ||||
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26 | ||||
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27 | def check_latex_to_png_dvipng_fails_when_no_cmd(command): | |||
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28 | def mock_find_cmd(arg): | |||
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29 | if arg == command: | |||
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30 | raise FindCmdError | |||
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31 | ||||
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32 | with monkeypatch(latextools, "find_cmd", mock_find_cmd): | |||
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33 | nt.assert_equals(latextools.latex_to_png_dvipng("whatever", True), | |||
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34 | None) | |||
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35 | ||||
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36 | ||||
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37 | @onlyif_cmds_exist('latex', 'dvipng') | |||
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38 | def test_latex_to_png_dvipng_runs(): | |||
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39 | """ | |||
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40 | Test that latex_to_png_dvipng just runs without error. | |||
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41 | """ | |||
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42 | def mock_kpsewhich(filename): | |||
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43 | nt.assert_equals(filename, "breqn.sty") | |||
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44 | return None | |||
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45 | ||||
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46 | for (s, wrap) in [("$$x^2$$", False), ("x^2", True)]: | |||
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47 | yield (latextools.latex_to_png_dvipng, s, wrap) | |||
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48 | ||||
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49 | with monkeypatch(latextools, "kpsewhich", mock_kpsewhich): | |||
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50 | yield (latextools.latex_to_png_dvipng, s, wrap) | |||
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51 | ||||
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52 | ||||
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53 | def test_genelatex_no_wrap(): | |||
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54 | """ | |||
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55 | Test genelatex with wrap=False. | |||
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56 | """ | |||
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57 | def mock_kpsewhich(filename): | |||
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58 | assert False, ("kpsewhich should not be called " | |||
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59 | "(called with {0})".format(filename)) | |||
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60 | ||||
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61 | with monkeypatch(latextools, "kpsewhich", mock_kpsewhich): | |||
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62 | nt.assert_equals( | |||
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63 | '\n'.join(latextools.genelatex("body text", False)), | |||
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64 | r'''\documentclass{article} | |||
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65 | \usepackage{amsmath} | |||
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66 | \usepackage{amsthm} | |||
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67 | \usepackage{amssymb} | |||
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68 | \usepackage{bm} | |||
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69 | \pagestyle{empty} | |||
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70 | \begin{document} | |||
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71 | body text | |||
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72 | \end{document}''') | |||
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73 | ||||
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74 | ||||
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75 | def test_genelatex_wrap_with_breqn(): | |||
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76 | """ | |||
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77 | Test genelatex with wrap=True for the case breqn.sty is installed. | |||
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78 | """ | |||
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79 | def mock_kpsewhich(filename): | |||
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80 | nt.assert_equals(filename, "breqn.sty") | |||
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81 | return "path/to/breqn.sty" | |||
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82 | ||||
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83 | with monkeypatch(latextools, "kpsewhich", mock_kpsewhich): | |||
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84 | nt.assert_equals( | |||
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85 | '\n'.join(latextools.genelatex("x^2", True)), | |||
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86 | r'''\documentclass{article} | |||
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87 | \usepackage{amsmath} | |||
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88 | \usepackage{amsthm} | |||
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89 | \usepackage{amssymb} | |||
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90 | \usepackage{bm} | |||
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91 | \usepackage{breqn} | |||
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92 | \pagestyle{empty} | |||
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93 | \begin{document} | |||
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94 | \begin{dmath*} | |||
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95 | x^2 | |||
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96 | \end{dmath*} | |||
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97 | \end{document}''') | |||
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98 | ||||
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99 | ||||
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100 | def test_genelatex_wrap_without_breqn(): | |||
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101 | """ | |||
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102 | Test genelatex with wrap=True for the case breqn.sty is not installed. | |||
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103 | """ | |||
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104 | def mock_kpsewhich(filename): | |||
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105 | nt.assert_equals(filename, "breqn.sty") | |||
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106 | return None | |||
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107 | ||||
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108 | with monkeypatch(latextools, "kpsewhich", mock_kpsewhich): | |||
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109 | nt.assert_equals( | |||
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110 | '\n'.join(latextools.genelatex("x^2", True)), | |||
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111 | r'''\documentclass{article} | |||
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112 | \usepackage{amsmath} | |||
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113 | \usepackage{amsthm} | |||
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114 | \usepackage{amssymb} | |||
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115 | \usepackage{bm} | |||
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116 | \pagestyle{empty} | |||
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117 | \begin{document} | |||
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118 | $$x^2$$ | |||
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119 | \end{document}''') |
@@ -72,6 +72,9 b' from ipunittest import ipdoctest, ipdocstring' | |||||
72 | # numpy.testing.decorators, we expose all of it here. |
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72 | # numpy.testing.decorators, we expose all of it here. | |
73 | from IPython.external.decorators import * |
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73 | from IPython.external.decorators import * | |
74 |
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74 | |||
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75 | # For onlyif_cmd_exists decorator | |||
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76 | from IPython.utils.process import is_cmd_found | |||
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77 | ||||
75 | #----------------------------------------------------------------------------- |
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78 | #----------------------------------------------------------------------------- | |
76 | # Classes and functions |
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79 | # Classes and functions | |
77 | #----------------------------------------------------------------------------- |
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80 | #----------------------------------------------------------------------------- | |
@@ -342,3 +345,14 b' else:' | |||||
342 |
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345 | |||
343 | onlyif_unicode_paths = onlyif(unicode_paths, ("This test is only applicable " |
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346 | onlyif_unicode_paths = onlyif(unicode_paths, ("This test is only applicable " | |
344 | "where we can use unicode in filenames.")) |
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347 | "where we can use unicode in filenames.")) | |
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348 | ||||
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349 | ||||
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350 | def onlyif_cmds_exist(*commands): | |||
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351 | """ | |||
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352 | Decorator to skip test when at least one of `commands` is not found. | |||
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353 | """ | |||
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354 | for cmd in commands: | |||
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355 | if not is_cmd_found(cmd): | |||
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356 | return skip("This test runs only if command '{0}' " | |||
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357 | "is installed".format(cmd)) | |||
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358 | return null_deco |
@@ -390,3 +390,14 b' def make_tempfile(name):' | |||||
390 | yield |
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390 | yield | |
391 | finally: |
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391 | finally: | |
392 | os.unlink(name) |
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392 | os.unlink(name) | |
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393 | ||||
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394 | ||||
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395 | @contextmanager | |||
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396 | def monkeypatch(obj, name, attr): | |||
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397 | """ | |||
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398 | Context manager to replace attribute named `name` in `obj` with `attr`. | |||
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399 | """ | |||
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400 | orig = getattr(obj, name) | |||
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401 | setattr(obj, name, attr) | |||
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402 | yield | |||
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403 | setattr(obj, name, orig) |
@@ -72,6 +72,15 b' def find_cmd(cmd):' | |||||
72 | return os.path.abspath(path) |
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72 | return os.path.abspath(path) | |
73 |
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73 | |||
74 |
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74 | |||
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75 | def is_cmd_found(cmd): | |||
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76 | """Check whether executable `cmd` exists or not and return a bool.""" | |||
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77 | try: | |||
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78 | find_cmd(cmd) | |||
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79 | return True | |||
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80 | except FindCmdError: | |||
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81 | return False | |||
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82 | ||||
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83 | ||||
75 | def pycmd2argv(cmd): |
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84 | def pycmd2argv(cmd): | |
76 | r"""Take the path of a python command and return a list (argv-style). |
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85 | r"""Take the path of a python command and return a list (argv-style). | |
77 |
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86 |
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