upstream/ipython Files · IPython/core/tests/test_ultratb.py

Merge pull request from Carreau/ja...

Merge pull request from Carreau/ja Improve Image format validation and add html width,height This addresses the first two bullets of Validates first argument to constrain format to png, jpeg, Lets user specify width, height, or both and emits appropriate html I introduced a couple of class constants to minimize the number of times I saw 'jpeg' and 'png' and document the _ACCEPTABLE_FORMATS. I added one real jpeg image to the test directory and one zero-length gif file to survive the file not found error in super() Closes Add `assert_is_none`, `assert_is_not_none` to `nose.tools`

Thomas Kluyver - - Load All Authors

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      """Tests for IPython.core.ultratb

      """

      import os.path

      import unittest

      from IPython.testing import tools as tt

      from IPython.utils.syspathcontext import prepended_to_syspath

      from IPython.utils.tempdir import TemporaryDirectory

      ip = get_ipython()

      file_1 = """1

      2

      3

      def f():

        1/0

      """

      file_2 = """def f():

        1/0

      """

      class ChangedPyFileTest(unittest.TestCase):

          def test_changing_py_file(self):

              """Traceback produced if the line where the error occurred is missing?

              https://github.com/ipython/ipython/issues/1456

              """

              with TemporaryDirectory() as td:

                  fname = os.path.join(td, "foo.py")

                  with open(fname, "w") as f:

                      f.write(file_1)

                  with prepended_to_syspath(td):

                      ip.run_cell("import foo")

                  with tt.AssertPrints("ZeroDivisionError"):

                      ip.run_cell("foo.f()")

                  # Make the file shorter, so the line of the error is missing.

                  with open(fname, "w") as f:

                      f.write(file_2)

                  # For some reason, this was failing on the *second* call after

                  # changing the file, so we call f() twice.

                  with tt.AssertNotPrints("Internal Python error", channel='stderr'):

                      with tt.AssertPrints("ZeroDivisionError"):

                          ip.run_cell("foo.f()")

                      with tt.AssertPrints("ZeroDivisionError"):

                          ip.run_cell("foo.f()")

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				"""Tests for IPython.core.ultratb
				"""

				import os.path
				import unittest

				from IPython.testing import tools as tt
				from IPython.utils.syspathcontext import prepended_to_syspath
				from IPython.utils.tempdir import TemporaryDirectory

				ip = get_ipython()

				file_1 = """1
				2
				3
				def f():
				1/0
				"""

				file_2 = """def f():
				1/0
				"""

				class ChangedPyFileTest(unittest.TestCase):
				def test_changing_py_file(self):
				"""Traceback produced if the line where the error occurred is missing?

				https://github.com/ipython/ipython/issues/1456
				"""
				with TemporaryDirectory() as td:
				fname = os.path.join(td, "foo.py")
				with open(fname, "w") as f:
				f.write(file_1)

				with prepended_to_syspath(td):
				ip.run_cell("import foo")

				with tt.AssertPrints("ZeroDivisionError"):
				ip.run_cell("foo.f()")

				# Make the file shorter, so the line of the error is missing.
				with open(fname, "w") as f:
				f.write(file_2)

				# For some reason, this was failing on the second call after
				# changing the file, so we call f() twice.
				with tt.AssertNotPrints("Internal Python error", channel='stderr'):
				with tt.AssertPrints("ZeroDivisionError"):
				ip.run_cell("foo.f()")
				with tt.AssertPrints("ZeroDivisionError"):
				ip.run_cell("foo.f()")