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"""Tests for the coalescestreams preprocessor"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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from IPython.nbformat import current as nbformat
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from .base import PreprocessorTestsBase
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from ..coalescestreams import coalesce_streams
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class TestCoalesceStreams(PreprocessorTestsBase):
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"""Contains test functions for coalescestreams.py"""
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def test_coalesce_streams(self):
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"""coalesce_streams preprocessor output test"""
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nb = self.build_notebook()
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res = self.build_resources()
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nb, res = coalesce_streams(nb, res)
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outputs = nb.worksheets[0].cells[0].outputs
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self.assertEqual(outputs[0].text, "a")
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self.assertEqual(outputs[1].output_type, "text")
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self.assertEqual(outputs[2].text, "cd")
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self.assertEqual(outputs[3].text, "ef")
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def test_coalesce_sequenced_streams(self):
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"""Can the coalesce streams preprocessor merge a sequence of streams?"""
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outputs = [nbformat.new_output(output_type="stream", stream="stdout", output_text="0"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="1"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="2"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="3"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="4"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="5"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="6"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="7")]
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cells=[nbformat.new_code_cell(input="# None", prompt_number=1,outputs=outputs)]
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worksheets = [nbformat.new_worksheet(cells=cells)]
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nb = nbformat.new_notebook(name="notebook1", worksheets=worksheets)
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res = self.build_resources()
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nb, res = coalesce_streams(nb, res)
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outputs = nb.worksheets[0].cells[0].outputs
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self.assertEqual(outputs[0].text, u'01234567')
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def test_coalesce_replace_streams(self):
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"""Are \\r characters handled?"""
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outputs = [nbformat.new_output(output_type="stream", stream="stdout", output_text="z"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="\ra"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="\nz\rb"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="\nz"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="\rc\n"),
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nbformat.new_output(output_type="stream", stream="stdout", output_text="z\rz\rd")]
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cells=[nbformat.new_code_cell(input="# None", prompt_number=1,outputs=outputs)]
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worksheets = [nbformat.new_worksheet(cells=cells)]
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nb = nbformat.new_notebook(name="notebook1", worksheets=worksheets)
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res = self.build_resources()
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nb, res = coalesce_streams(nb, res)
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outputs = nb.worksheets[0].cells[0].outputs
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self.assertEqual(outputs[0].text, u'a\nb\nc\nd')
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