using python module: doctest
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This document discusses various techniques for writing doctests, including: - Summarizing how doctests allow testing functions through documentation strings. - Handling unpredictable output like object IDs using options like ELLIPSIS. - Working around whitespace issues using tags like <BLANKLINE>. - Specifying test locations within modules or external files. - Documenting functions in external files like .rst files. - Running tests on modules, files, or via a unittest suite. - Isolating test globals and contexts to avoid interference across tests.
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"Scaling in space and time with Temporal", Andriy Lupa.pdf
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Overview:
This presentation demonstrates how CurieTech AI’s purpose-built agents empower MuleSoft developers to create integration workflows faster, more accurately, and with less manual effort
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Dedicated AI agents for every stage: Coding, Testing (MUnit), Documentation, Code Review, and Migration
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DataWeave automation: Generate mappings from tables or samples—95%+ complete within minutes
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Efficient code reviews: Gain intelligent feedback on flows, patterns, and error handling
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Test & documentation automation: Auto-generate MUnit test cases, sample data, and detailed docs from code
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Why Now?
Achieve 10× productivity gains, slashing development time from hours to minutes
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Maintain high accuracy with code quality matching or exceeding manual efforts
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Ideal for developers, architects, and teams wanting to scale MuleSoft projects with AI efficiency
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using python module: doctest
- 1. doctest Testing through documentation Honggang Wang @ Aragon Nov 2010
- 2. Getting Started # foo.py
- 4. “””
- 5. This is a demo function.
- 7. 12
- 9. 'aaaaa'
- 10. “””
- 11. return a * b $ python foo.py
- 12. $ python -v foo.py
- 13. $ python -m doctest -v foo.py
- 14. Trying:
- 15. multiply(3, 4)
- 16. Expecting:
- 17. 12
- 18. ok
- 19. ...
- 20. 2 passed and 0 failed.
- 21. Test passed. Run test
- 22. Handling Unpredictable Output Sometimes the exact output may not be predictable. e.g. Local date and time values
- 23. Object ids
- 24. Precision of float values
- 25. Exceptions
- 26. And more...
- 27. Handling Unpredictable Output # unpredictable.py
- 28. class A(object):
- 29. pass
- 31. “””
- 32. Put obj into a list.
- 34. [<unpredictable.A object at 0x9c2214c>]
- 35. “””
- 36. return [obj]
- 37. Handling Unpredictable Output # unpredictable2.py
- 38. class A(object):
- 39. pass
- 41. “””
- 42. Put obj into a list.
- 43. >>> gene_list(A()) #doctest: +ELLIPSIS
- 44. [<unpredictable2.A object at 0x...>]
- 45. “””
- 46. return [obj]
- 47. Working Around Whitespace # double_space.py
- 49. """Prints a list of lines double-spaced.
- 50. >>> double_space(['Line one.', 'Line two.'])
- 51. Line one.
- 52. Line two.
- 54. for l in lines:
- 55. print l
- 56. print
- 57. return
- 58. Working Around Whitespace # double_space2.py
- 60. """Prints a list of lines double-spaced.
- 61. >>> double_space(['Line one.', 'Line two.'])
- 62. Line one.
- 63. <BLANKLINE>
- 64. Line two.
- 65. <BLANKLINE>
- 67. for l in lines:
- 68. print l
- 69. print
- 70. return
- 71. Test Locations # test_location.py
- 72. “””
- 73. >>> A == B
- 74. False
- 75. “””
- 78. Test Locations # test_location2.py
- 79. from b_cls import B
- 80. __test__ = {
- 81. 'test001': “””
- 82. >>> A.__class__
- 83. <type 'type'>
- 84. “”” ,
- 85. 'external': B,
- 86. }
- 87. class A(object):
- 88. pass # b_cls.py
- 89. “””
- 90. >>> 1 + 1
- 91. 3
- 92. “””
- 93. class B(object):
- 94. “”” The class B.
- 95. >>> B.__name__
- 96. B
- 97. “””
- 98. pass
- 99. External Documentation # foo2.py
- 100. def multiply(a, b):
- 101. return a * b ===============
- 102. How to use foo2.py
- 103. ===============
- 104. For numbers:
- 105. >>> from foo2 import multiply
- 106. >>> multiply(3, 7)
- 107. 21
- 108. It also works with strings:
- 109. >>> multiply('s', 7)
- 110. sssssss foo2.rst
- 111. External Documentation $ python -m doctest -v foo2.rst Run test using foo2.rst
- 112. Running Tests # utils.py
- 113. def add(a, b):
- 114. return a + b
- 115. if __name__ == “__main__”:
- 116. import doctest
- 117. doctest.testmod() By module # other_script.py
- 118. import utils
- 119. if __name__ == “__main__”:
- 120. import doctest
- 122. Running Tests # other_script.py
- 123. import doctest
- 124. if __name__ == “__main__”:
- 125. doctest.testfile(' foo2.rst ') By file
- 126. Unittest Suite # doctest_unittest.py
- 127. import doctest
- 128. import unittest
- 134. runner.run(suite)
- 135. Unittest Suite $ python doctest_unittest.py
- 138. doctest_in_help.rst
- 139. Doctest: doctest_in_help.rst ... ok
- 141. Ran 2 tests in 0.006s
- 142. OK
- 143. Test Context class TestGlobals(object):
- 144. def one(self):
- 145. """
- 146. >>> var = 'value'
- 147. >>> 'var' in globals()
- 148. True
- 149. """
- 150. def two(self):
- 151. """
- 152. >>> 'var' in globals()
- 153. False
- 154. """ Each test source (function, class, module) has its own set of global values.
- 155. Test Context $ python -m doctest -v doctest_test_globals.py
- 156. Trying:
- 157. var = 'value'
- 158. Expecting nothing
- 159. ok
- 160. ...
- 161. 2 items passed all tests:
- 162. 2 tests in doctest_test_globals.TestGlobals.one
- 163. 1 tests in doctest_test_globals.TestGlobals.two
- 164. 3 tests in 4 items.
- 165. 3 passed and 0 failed.
- 166. Test passed.
- 167. Test Context _module_data = {}
- 169. def one(self):
- 170. """
- 172. >>> 'var' in _module_data
- 173. True
- 174. """
- 176. def two(self):
- 177. """
- 178. >>> 'var' in _module_data
- 179. False
- 180. """
- 181. Test Context $ python -m doctest -v doctest_mutable_globals.py
- 182. ...
- 183. Failed example:
- 185. Expected:
- 186. False
- 187. Got:
- 188. True
- 189. ...
- 190. 3 tests in 4 items.
- 191. 2 passed and 1 failed.
- 192. ***Test Failed*** 1 failures.
- 193. Thanks!