u-boot/test/py/tests/test_hush_if_test.py
Stephen Warren 24862c640e test/py: skip tests that require large CONFIG_SYS_MAXARGS
test_hush_if_test.py executes commands that require large values of
CONFIG_SYS_MAXARGS. Detect cases where the configured value is too low
and skip those tests.

Ideally, this would be implemented inside console.run_command(). However,
the command passed to that function is already a completely formed string,
and determining its argument count usage would require splitting commands
at ;, handling quoting to deal with arguments containing spaces, etc. Even
passing the command as a list wouldn't solve all these issues, since we'd
still need to split commands on ; and deal with cases like "if test ..."
which consumes 0 of the argument count.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Simon Glass <sjg@chromium.org>
2016-02-26 08:42:12 -05:00

163 lines
4.5 KiB
Python

# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0
# Test operation of the "if" shell command.
import os
import os.path
import pytest
# The list of "if test" conditions to test.
subtests = (
# Base if functionality.
('true', True),
('false', False),
# Basic operators.
('test aaa = aaa', True),
('test aaa = bbb', False),
('test aaa != bbb', True),
('test aaa != aaa', False),
('test aaa < bbb', True),
('test bbb < aaa', False),
('test bbb > aaa', True),
('test aaa > bbb', False),
('test 123 -eq 123', True),
('test 123 -eq 456', False),
('test 123 -ne 456', True),
('test 123 -ne 123', False),
('test 123 -lt 456', True),
('test 123 -lt 123', False),
('test 456 -lt 123', False),
('test 123 -le 456', True),
('test 123 -le 123', True),
('test 456 -le 123', False),
('test 456 -gt 123', True),
('test 123 -gt 123', False),
('test 123 -gt 456', False),
('test 456 -ge 123', True),
('test 123 -ge 123', True),
('test 123 -ge 456', False),
('test -z ""', True),
('test -z "aaa"', False),
('test -n "aaa"', True),
('test -n ""', False),
# Inversion of simple tests.
('test ! aaa = aaa', False),
('test ! aaa = bbb', True),
('test ! ! aaa = aaa', True),
('test ! ! aaa = bbb', False),
# Binary operators.
('test aaa != aaa -o bbb != bbb', False),
('test aaa != aaa -o bbb = bbb', True),
('test aaa = aaa -o bbb != bbb', True),
('test aaa = aaa -o bbb = bbb', True),
('test aaa != aaa -a bbb != bbb', False),
('test aaa != aaa -a bbb = bbb', False),
('test aaa = aaa -a bbb != bbb', False),
('test aaa = aaa -a bbb = bbb', True),
# Inversion within binary operators.
('test ! aaa != aaa -o ! bbb != bbb', True),
('test ! aaa != aaa -o ! bbb = bbb', True),
('test ! aaa = aaa -o ! bbb != bbb', True),
('test ! aaa = aaa -o ! bbb = bbb', False),
('test ! ! aaa != aaa -o ! ! bbb != bbb', False),
('test ! ! aaa != aaa -o ! ! bbb = bbb', True),
('test ! ! aaa = aaa -o ! ! bbb != bbb', True),
('test ! ! aaa = aaa -o ! ! bbb = bbb', True),
# -z operator.
('test -z "$ut_var_nonexistent"', True),
('test -z "$ut_var_exists"', False),
)
def exec_hush_if(u_boot_console, expr, result):
"""Execute a shell "if" command, and validate its result."""
config = u_boot_console.config.buildconfig
maxargs = int(config.get('config_sys_maxargs', '0'))
args = len(expr.split(' ')) - 1
if args > maxargs:
u_boot_console.log.warning('CONFIG_SYS_MAXARGS too low; need ' +
str(args))
pytest.skip()
cmd = 'if ' + expr + '; then echo true; else echo false; fi'
response = u_boot_console.run_command(cmd)
assert response.strip() == str(result).lower()
@pytest.mark.buildconfigspec('sys_hush_parser')
def test_hush_if_test_setup(u_boot_console):
"""Set up environment variables used during the "if" tests."""
u_boot_console.run_command('setenv ut_var_nonexistent')
u_boot_console.run_command('setenv ut_var_exists 1')
@pytest.mark.buildconfigspec('sys_hush_parser')
@pytest.mark.parametrize('expr,result', subtests)
def test_hush_if_test(u_boot_console, expr, result):
"""Test a single "if test" condition."""
exec_hush_if(u_boot_console, expr, result)
@pytest.mark.buildconfigspec('sys_hush_parser')
def test_hush_if_test_teardown(u_boot_console):
"""Clean up environment variables used during the "if" tests."""
u_boot_console.run_command('setenv ut_var_exists')
@pytest.mark.buildconfigspec('sys_hush_parser')
# We might test this on real filesystems via UMS, DFU, 'save', etc.
# Of those, only UMS currently allows file removal though.
@pytest.mark.boardspec('sandbox')
def test_hush_if_test_host_file_exists(u_boot_console):
"""Test the "if test -e" shell command."""
test_file = u_boot_console.config.result_dir + \
'/creating_this_file_breaks_u_boot_tests'
try:
os.unlink(test_file)
except:
pass
assert not os.path.exists(test_file)
expr = 'test -e hostfs - ' + test_file
exec_hush_if(u_boot_console, expr, False)
try:
with file(test_file, 'wb'):
pass
assert os.path.exists(test_file)
expr = 'test -e hostfs - ' + test_file
exec_hush_if(u_boot_console, expr, True)
finally:
os.unlink(test_file)
expr = 'test -e hostfs - ' + test_file
exec_hush_if(u_boot_console, expr, False)