from cmdtest import Program, assert_hook
echo = Program('echo')
@echo.test
def echo_string_should_output_string():
assert echo('foo').out == 'foo\n'
if __name__ == '__main__':
echo.run()
from cmdtest import Program, NonExistentFile, File
cat = Program('cat')
@cat.test
def cat_should_echo_single_file():
assert cat(File('hello')).out == 'hello'
@cat.test
def cat_should_combine_files():
assert cat(File('hello'), File('world')).out == 'helloworld'
@cat.test
def cat_should_not_write_to_stderr():
assert cat(File('hello')).err == ''
@cat.test
def cat_should_succeed():
assert cat(File('hello')).status == 0
@cat.test
def cat_should_fail_with_bad_files():
result = cat(NonExistentFile())
assert result.err != ''
assert result.status != 0
if __name__ == '__main__':
cat.run()
from attest import Tests
from cmdtest import Program, File
head = Program('head -n10')
@head.test
def head_should_output_small_file():
f = File(text='hello')
assert head(f).out == 'hello'
@head.test
def head_should_output_10_lines_of_big_file():
f = File(text='abc\n'*1000)
output = head(f).out
assert output.count('\n') == 10
assert output == f.text[:len(output)]
if __name__ == '__main__':
head.run()
from cmdtest import Program, File
touch = Program('touch')
@touch.test
def touch_should_create_file():
touch('a_file')
assert File(name='a_file').exists()
if __name__ == '__main__':
touch.run()
#! /usr/bin/env python
from cmdtest import Program, assert_hook
cut = Program('cut')
@cut.test
def should_select_field():
p = cut('-f', '1', _in='a\tb\n')
assert p.out == 'a\n'
@cut.test
def should_select_multiple_fields():
p = cut('-f', '1,3', _in='a\tb\tc\n')
print p.out
print p.err
assert p.out == 'a\tc\n'
@cut.test
def should_understand_delimiter():
p = cut('-f', '1', '-d', ',', _in='a,b\n')
assert p.out == 'a\n'
if __name__ == '__main__':
cut.run()
#! /usr/bin/env python
from cmdtest import Program, raises, TimeoutError
sleep = Program("sleep")
@sleep.test
def should_eventully_raise_timeout():
with raises(TimeoutError) as error:
sleep("4")
@sleep.test
def can_set_time_out():
assert sleep("0", _timeout=0.5).status == 0
if __name__ == "__main__":
sleep.run()