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             test_current.py
        
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      """

      Contains tests class for current.py

      """

      # Copyright (c) IPython Development Team.

      # Distributed under the terms of the Modified BSD License.

      import io

      import json

      import tempfile

      from .base import TestsBase

      from ..reader import get_version

      from ..current import read, current_nbformat, validate, writes

      class TestCurrent(TestsBase):

          def test_read(self):

              """Can older notebooks be opened and automatically converted to the current 

              nbformat?"""

              # Open a version 2 notebook.

              with self.fopen(u'test2.ipynb', u'r') as f:

                  nb = read(f)

              # Check that the notebook was upgraded to the latest version automatically.

              (major, minor) = get_version(nb)

              self.assertEqual(major, current_nbformat)

          def test_write_downgrade_2(self):

              """dowgrade a v3 notebook to v2"""

              # Open a version 3 notebook.

              with self.fopen(u'test3.ipynb', 'r') as f:

                  nb = read(f, u'json')

              jsons = writes(nb, version=2)

              nb2 = json.loads(jsons)

              (major, minor) = get_version(nb2)

              self.assertEqual(major, 2)

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				"""
				Contains tests class for current.py
				"""

				# Copyright (c) IPython Development Team.
				# Distributed under the terms of the Modified BSD License.

				import io
				import json
				import tempfile

				from .base import TestsBase

				from ..reader import get_version
				from ..current import read, current_nbformat, validate, writes


				class TestCurrent(TestsBase):

				def test_read(self):
				"""Can older notebooks be opened and automatically converted to the current
				nbformat?"""

				# Open a version 2 notebook.
				with self.fopen(u'test2.ipynb', u'r') as f:
				nb = read(f)

				# Check that the notebook was upgraded to the latest version automatically.
				(major, minor) = get_version(nb)
				self.assertEqual(major, current_nbformat)

				def test_write_downgrade_2(self):
				"""dowgrade a v3 notebook to v2"""
				# Open a version 3 notebook.
				with self.fopen(u'test3.ipynb', 'r') as f:
				nb = read(f, u'json')

				jsons = writes(nb, version=2)
				nb2 = json.loads(jsons)
				(major, minor) = get_version(nb2)
				self.assertEqual(major, 2)