##// END OF EJS Templates
Prevent qtconsole frontend freeze on lots of output....
Prevent qtconsole frontend freeze on lots of output. The output from the kernel is now clipped to last `buffer_size` before displaying and a timer is used to flush the pending output text instead of attempting to display text on every stream output from kernel. The timer interval is adjusted based on actual time taken to append a screenful of text to widget. This throttles the widget repaints and avoids choking the Qt event loop leaving time to handle other Qt events. Test cases: In [1]: for i in xrange(1000000): print i In [2]: range(100000) Without this commit the first input causes the qtconsole frontend to freeze, not responding to `Ctrl+C`.

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test_nbbase.py
113 lines | 4.1 KiB | text/x-python | PythonLexer
from unittest import TestCase
from ..nbbase import (
NotebookNode,
new_code_cell, new_text_cell, new_worksheet, new_notebook, new_output,
new_author, new_metadata
)
class TestCell(TestCase):
def test_empty_code_cell(self):
cc = new_code_cell()
self.assertEqual(cc.cell_type,u'code')
self.assertEqual(u'input' not in cc, True)
self.assertEqual(u'prompt_number' not in cc, True)
self.assertEqual(cc.outputs, [])
self.assertEqual(cc.collapsed, False)
def test_code_cell(self):
cc = new_code_cell(input='a=10', prompt_number=0, collapsed=True)
cc.outputs = [new_output(output_type=u'pyout',
output_svg=u'foo',output_text=u'10',prompt_number=0)]
self.assertEqual(cc.input, u'a=10')
self.assertEqual(cc.prompt_number, 0)
self.assertEqual(cc.language, u'python')
self.assertEqual(cc.outputs[0].svg, u'foo')
self.assertEqual(cc.outputs[0].text, u'10')
self.assertEqual(cc.outputs[0].prompt_number, 0)
self.assertEqual(cc.collapsed, True)
def test_pyerr(self):
o = new_output(output_type=u'pyerr', etype=u'NameError',
evalue=u'Name not found', traceback=[u'frame 0', u'frame 1', u'frame 2']
)
self.assertEqual(o.output_type, u'pyerr')
self.assertEqual(o.etype, u'NameError')
self.assertEqual(o.evalue, u'Name not found')
self.assertEqual(o.traceback, [u'frame 0', u'frame 1', u'frame 2'])
def test_empty_html_cell(self):
tc = new_text_cell(u'html')
self.assertEqual(tc.cell_type, u'html')
self.assertEqual(u'source' not in tc, True)
self.assertEqual(u'rendered' not in tc, True)
def test_html_cell(self):
tc = new_text_cell(u'html', 'hi', 'hi')
self.assertEqual(tc.source, u'hi')
self.assertEqual(tc.rendered, u'hi')
def test_empty_markdown_cell(self):
tc = new_text_cell(u'markdown')
self.assertEqual(tc.cell_type, u'markdown')
self.assertEqual(u'source' not in tc, True)
self.assertEqual(u'rendered' not in tc, True)
def test_markdown_cell(self):
tc = new_text_cell(u'markdown', 'hi', 'hi')
self.assertEqual(tc.source, u'hi')
self.assertEqual(tc.rendered, u'hi')
class TestWorksheet(TestCase):
def test_empty_worksheet(self):
ws = new_worksheet()
self.assertEqual(ws.cells,[])
self.assertEqual(u'name' not in ws, True)
def test_worksheet(self):
cells = [new_code_cell(), new_text_cell(u'html')]
ws = new_worksheet(cells=cells,name=u'foo')
self.assertEqual(ws.cells,cells)
self.assertEqual(ws.name,u'foo')
class TestNotebook(TestCase):
def test_empty_notebook(self):
nb = new_notebook()
self.assertEqual(nb.worksheets, [])
self.assertEqual(nb.metadata, NotebookNode())
self.assertEqual(nb.nbformat,2)
def test_notebook(self):
worksheets = [new_worksheet(),new_worksheet()]
metadata = new_metadata(name=u'foo')
nb = new_notebook(metadata=metadata,worksheets=worksheets)
self.assertEqual(nb.metadata.name,u'foo')
self.assertEqual(nb.worksheets,worksheets)
self.assertEqual(nb.nbformat,2)
class TestMetadata(TestCase):
def test_empty_metadata(self):
md = new_metadata()
self.assertEqual(u'name' not in md, True)
self.assertEqual(u'authors' not in md, True)
self.assertEqual(u'license' not in md, True)
self.assertEqual(u'saved' not in md, True)
self.assertEqual(u'modified' not in md, True)
self.assertEqual(u'gistid' not in md, True)
def test_metadata(self):
authors = [new_author(name='Bart Simpson',email='bsimpson@fox.com')]
md = new_metadata(name=u'foo',license=u'BSD',created=u'today',
modified=u'now',gistid=u'21341231',authors=authors)
self.assertEqual(md.name, u'foo')
self.assertEqual(md.license, u'BSD')
self.assertEqual(md.created, u'today')
self.assertEqual(md.modified, u'now')
self.assertEqual(md.gistid, u'21341231')
self.assertEqual(md.authors, authors)