upstream/ipython Files · IPython/lib/tests/test_editorhooks.py

Provide and easier way to generate magics and pre-post hooks...

Provide and easier way to generate magics and pre-post hooks This introduce a code base way of modifying the ast. This allow to use Template strings with the two special variable names names `__code__` and `__ret__` allowing to quickly write a magic, or hooks that modify the ast. This also introduce a `%code_wrap` cell magic to on the fly wrap code. It is this easy to for example modify IPython to say time each block of code, or retry them, or wrap them in try/except and analyse the error message, profile... Note that this is not new, but simply convenience function and utilities, especially around hygiene.

Matthias Bussonnier - - Load All Authors

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             test_editorhooks.py
        
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      """Test installing editor hooks"""

      import sys

      from unittest import mock

      from IPython import get_ipython

      from IPython.lib import editorhooks

      def test_install_editor():

          called = []

          def fake_popen(*args, **kwargs):

              called.append({

                  'args': args,

                  'kwargs': kwargs,

              })

              return mock.MagicMock(**{'wait.return_value': 0})

          editorhooks.install_editor('foo -l {line} -f {filename}', wait=False)

          with mock.patch('subprocess.Popen', fake_popen):

              get_ipython().hooks.editor('the file', 64)

          assert len(called) == 1

          args = called[0]["args"]

          kwargs = called[0]["kwargs"]

          assert kwargs == {"shell": True}

          if sys.platform.startswith("win"):

              expected = ["foo", "-l", "64", "-f", "the file"]

          else:

              expected = "foo -l 64 -f 'the file'"

          cmd = args[0]

          assert cmd == expected

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				"""Test installing editor hooks"""
				import sys
				from unittest import mock

				from IPython import get_ipython
				from IPython.lib import editorhooks

				def test_install_editor():
				called = []
				def fake_popen(args, *kwargs):
				called.append({
				'args': args,
				'kwargs': kwargs,
				})
				return mock.MagicMock(**{'wait.return_value': 0})
				editorhooks.install_editor('foo -l {line} -f {filename}', wait=False)

				with mock.patch('subprocess.Popen', fake_popen):
				get_ipython().hooks.editor('the file', 64)

				assert len(called) == 1
				args = called[0]["args"]
				kwargs = called[0]["kwargs"]

				assert kwargs == {"shell": True}

				if sys.platform.startswith("win"):
				expected = ["foo", "-l", "64", "-f", "the file"]
				else:
				expected = "foo -l 64 -f 'the file'"
				cmd = args[0]
				assert cmd == expected