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test_displayhook.py
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/
test_displayhook.py
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import sys
from IPython.testing.tools import AssertPrints, AssertNotPrints
from IPython.core.displayhook import CapturingDisplayHook
from IPython.utils.capture import CapturedIO
def test_output_displayed():
"""Checking to make sure that output is displayed"""
with AssertPrints('2'):
ip.run_cell('1+1', store_history=True)
with AssertPrints('2'):
ip.run_cell('1+1 # comment with a semicolon;', store_history=True)
with AssertPrints('2'):
ip.run_cell('1+1\n#commented_out_function();', store_history=True)
def test_output_quiet():
"""Checking to make sure that output is quiet"""
with AssertNotPrints('2'):
ip.run_cell('1+1;', store_history=True)
with AssertNotPrints('2'):
ip.run_cell('1+1; # comment with a semicolon', store_history=True)
with AssertNotPrints('2'):
ip.run_cell('1+1;\n#commented_out_function()', store_history=True)
def test_underscore_no_overrite_user():
ip.run_cell('_ = 42', store_history=True)
ip.run_cell('1+1', store_history=True)
with AssertPrints('42'):
ip.run_cell('print(_)', store_history=True)
ip.run_cell('del _', store_history=True)
ip.run_cell('6+6', store_history=True)
with AssertPrints('12'):
ip.run_cell('_', store_history=True)
def test_underscore_no_overrite_builtins():
ip.run_cell("import gettext ; gettext.install('foo')", store_history=True)
ip.run_cell('3+3', store_history=True)
with AssertPrints('gettext'):
ip.run_cell('print(_)', store_history=True)
ip.run_cell('_ = "userset"', store_history=True)
with AssertPrints('userset'):
ip.run_cell('print(_)', store_history=True)
ip.run_cell('import builtins; del builtins._')
def test_interactivehooks_ast_modes():
"""
Test that ast nodes can be triggered with different modes
"""
saved_mode = ip.ast_node_interactivity
ip.ast_node_interactivity = 'last_expr_or_assign'
try:
with AssertPrints('2'):
ip.run_cell('a = 1+1', store_history=True)
with AssertPrints('9'):
ip.run_cell('b = 1+8 # comment with a semicolon;', store_history=False)
with AssertPrints('7'):
ip.run_cell('c = 1+6\n#commented_out_function();', store_history=True)
ip.run_cell('d = 11', store_history=True)
with AssertPrints('12'):
ip.run_cell('d += 1', store_history=True)
with AssertNotPrints('42'):
ip.run_cell('(u,v) = (41+1, 43-1)')
finally:
ip.ast_node_interactivity = saved_mode
def test_interactivehooks_ast_modes_semi_suppress():
"""
Test that ast nodes can be triggered with different modes and suppressed
by semicolon
"""
saved_mode = ip.ast_node_interactivity
ip.ast_node_interactivity = 'last_expr_or_assign'
try:
with AssertNotPrints('2'):
ip.run_cell('x = 1+1;', store_history=True)
with AssertNotPrints('7'):
ip.run_cell('y = 1+6; # comment with a semicolon', store_history=True)
with AssertNotPrints('9'):
ip.run_cell('z = 1+8;\n#commented_out_function()', store_history=True)
finally:
ip.ast_node_interactivity = saved_mode
def test_capture_display_hook_format():
"""Tests that the capture display hook conforms to the CapturedIO output format"""
hook = CapturingDisplayHook(ip)
hook({"foo": "bar"})
captured = CapturedIO(sys.stdout, sys.stderr, hook.outputs)
# Should not raise with RichOutput transformation error
captured.outputs