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# coding=utf-8
"""
Unit/functional testing for helper functions/classes in the cmd2.py module.
These are primarily tests related to parsing. Moreover, they are mostly a port of the old doctest tests which were
problematic because they worked properly for some versions of pyparsing but not for others.
Copyright 2017 Todd Leonhardt <todd.leonhardt@gmail.com>
Released under MIT license, see LICENSE file
"""
import sys
import cmd2
import pytest
@pytest.fixture
def hist():
from cmd2.cmd2 import HistoryItem
h = cmd2.cmd2.History([HistoryItem('first'), HistoryItem('second'), HistoryItem('third'), HistoryItem('fourth')])
return h
def test_history_span(hist):
h = hist
assert h == ['first', 'second', 'third', 'fourth']
assert h.span('-2..') == ['third', 'fourth']
assert h.span('2..3') == ['second', 'third'] # Inclusive of end
assert h.span('3') == ['third']
assert h.span(':') == h
assert h.span('2..') == ['second', 'third', 'fourth']
assert h.span('-1') == ['fourth']
assert h.span('-2..-3') == ['third', 'second']
assert h.span('*') == h
def test_history_get(hist):
h = hist
assert h == ['first', 'second', 'third', 'fourth']
assert h.get('') == h
assert h.get('-2') == h[:-2]
assert h.get('5') == []
assert h.get('2-3') == ['second'] # Exclusive of end
assert h.get('ir') == ['first', 'third'] # Normal string search for all elements containing "ir"
assert h.get('/i.*d/') == ['third'] # Regex string search "i", then anything, then "d"
def test_cast():
cast = cmd2.cmd2.cast
# Boolean
assert cast(True, True) == True
assert cast(True, False) == False
assert cast(True, 0) == False
assert cast(True, 1) == True
assert cast(True, 'on') == True
assert cast(True, 'off') == False
assert cast(True, 'ON') == True
assert cast(True, 'OFF') == False
assert cast(True, 'y') == True
assert cast(True, 'n') == False
assert cast(True, 't') == True
assert cast(True, 'f') == False
# Non-boolean same type
assert cast(1, 5) == 5
assert cast(3.4, 2.7) == 2.7
assert cast('foo', 'bar') == 'bar'
assert cast([1,2], [3,4]) == [3,4]
def test_cast_problems(capsys):
cast = cmd2.cmd2.cast
expected = 'Problem setting parameter (now {}) to {}; incorrect type?\n'
# Boolean current, with new value not convertible to bool
current = True
new = [True, True]
assert cast(current, new) == current
out, err = capsys.readouterr()
assert out == expected.format(current, new)
# Non-boolean current, with new value not convertible to current type
current = 1
new = 'octopus'
assert cast(current, new) == current
out, err = capsys.readouterr()
assert out == expected.format(current, new)
def test_empty_statement_raises_exception():
app = cmd2.Cmd()
with pytest.raises(cmd2.cmd2.EmptyStatement):
app._complete_statement('')
with pytest.raises(cmd2.cmd2.EmptyStatement):
app._complete_statement(' ')
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