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#!/usr/bin/python2 -tt
#
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Unit tests for bmpblk_utility.
"""
import os
import sys
import subprocess
import tempfile
import unittest
def runprog(*args):
"""Runs specified program and args, returns (exitcode, stdout, stderr)."""
p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()
return (p.returncode, out, err)
class TempDirTestCase(unittest.TestCase):
"""A TestCase that sets up self.tempdir with a temporary directory."""
def setUp(self):
self.tempdir = tempfile.mkdtemp(prefix='tmp_test_bmp_block')
self.tempfile = os.path.join(self.tempdir, 'FOO')
self._cwd = os.getcwd()
def tearDown(self):
os.chdir(self._cwd)
runprog('rm', '-rf', self.tempdir)
class TestFailures(TempDirTestCase):
def testNoArgs(self):
"""Running with no args should print usage and fail."""
rc, out, err = runprog(prog)
self.assertNotEqual(0, rc)
self.assertTrue(err.count("missing BMPBLOCK name"))
self.assertTrue(out.count("bmpblk_utility"))
def testMissingBmp(self):
"""Missing a bmp specified in the yaml is an error."""
rc, out, err = runprog(prog, '-c', 'case_nobmp.yaml', self.tempfile)
self.assertNotEqual(0, rc)
self.assertTrue(err.count("No such file or directory"))
def testInvalidBmp(self):
"""A .bmp file that isn't really a BMP should fail."""
rc, out, err = runprog(prog, '-c', 'case_badbmp.yaml', self.tempfile)
self.assertNotEqual(0, rc)
self.assertTrue(err.count("Unsupported image format"))
def testBadCompression(self):
"""Wrong compression types should fail."""
rc, out, err = runprog(prog, '-z', '99', '-c', 'case_simple.yaml', self.tempfile)
self.assertNotEqual(0, rc)
self.assertTrue(err.count("compression type"))
class TestOverWrite(TempDirTestCase):
def testOverwrite(self):
"""Create, unpack, unpack again, with and without -f"""
rc, out, err = runprog(prog, '-c', 'case_simple.yaml', self.tempfile)
self.assertEqual(0, rc)
rc, out, err = runprog(prog, '-x', '-d', self.tempdir, self.tempfile)
self.assertEqual(0, rc)
rc, out, err = runprog(prog, '-x', '-d', self.tempdir, self.tempfile)
self.assertNotEqual(0, rc)
self.assertTrue(err.count("File exists"))
rc, out, err = runprog(prog, '-x', '-d', self.tempdir, '-f', self.tempfile)
self.assertEqual(0, rc)
class TestPackUnpack(TempDirTestCase):
def testPackUnpack(self):
"""Create, unpack, recreate without compression"""
foo = os.path.join(self.tempdir, 'FOO')
bar = os.path.join(self.tempdir, 'BAR')
rc, out, err = runprog(prog, '-c', 'case_simple.yaml', foo)
self.assertEqual(0, rc)
rc, out, err = runprog(prog, '-x', '-d', self.tempdir, foo)
self.assertEqual(0, rc)
os.chdir(self.tempdir)
rc, out, err = runprog(prog, '-c', 'config.yaml', bar)
self.assertEqual(0, rc)
rc, out, err = runprog('/usr/bin/cmp', foo, bar)
self.assertEqual(0, rc)
def doPackUnpackZ(self, comp):
"""Create, unpack, recreate with a given compression"""
foo = os.path.join(self.tempdir, 'FOO')
bar = os.path.join(self.tempdir, 'BAR')
rc, out, err = runprog(prog, '-z', comp, '-c', 'case_simple.yaml', foo)
self.assertEqual(0, rc)
rc, out, err = runprog(prog, '-x', '-d', self.tempdir, foo)
self.assertEqual(0, rc)
os.chdir(self.tempdir)
rc, out, err = runprog(prog, '-z', comp, '-c', 'config.yaml', bar)
self.assertEqual(0, rc)
rc, out, err = runprog('/usr/bin/cmp', foo, bar)
self.assertEqual(0, rc)
def testPackUnpackZ1(self):
"""Create, unpack, recreate with EFIv1 compression"""
self.doPackUnpackZ('1')
def testPackUnpackZ2(self):
"""Create, unpack, recreate with LZMA compression"""
self.doPackUnpackZ('2')
def doPackUnpackImplicitZ(self, comp, noncomp):
"""Create with given compression, unpack, repack without specifying"""
foo = os.path.join(self.tempdir, 'FOO')
bar = os.path.join(self.tempdir, 'BAR')
# create with the specified compression scheme
rc, out, err = runprog(prog, '-z', comp, '-c', 'case_simple.yaml', foo)
self.assertEqual(0, rc)
# unpack. yaml file should have compression scheme in it
rc, out, err = runprog(prog, '-f', '-x', '-d', self.tempdir, foo)
self.assertEqual(0, rc)
os.chdir(self.tempdir)
# create with no compression specified, should use default from yaml
rc, out, err = runprog(prog, '-c', 'config.yaml', bar)
self.assertEqual(0, rc)
# so new output should match original
rc, out, err = runprog('/usr/bin/cmp', foo, bar)
self.assertEqual(0, rc)
# Now make sure that specifying a compression arg will override the default
for mycomp in noncomp:
# create with compression scheme different from default
rc, out, err = runprog(prog, '-z', str(mycomp), '-c', 'config.yaml', bar)
self.assertEqual(0, rc)
# should be different binary
rc, out, err = runprog('/usr/bin/cmp', foo, bar)
self.assertNotEqual(0, rc)
def testPackUnpackImplicitZ(self):
"""Create, unpack, recreate with implicit compression"""
self._allowed = range(3)
for c in self._allowed:
os.chdir(self._cwd)
self.doPackUnpackImplicitZ(str(c), [x for x in self._allowed if x != c])
class TestReproducable(TempDirTestCase):
def disabledTestReproduce(self):
"""Equivalent yaml files should produce identical bmpblocks"""
# TODO: This test is currently broken because bmpblock_utility
# uses a map to hold the images, and the map doesn't preserve image
# order. So a simple compare is insufficient to determine that
# the bmpblocks are equivalent. See crosbug.com/19541.
order1 = os.path.join(self.tempdir, 'ORDER1')
order2 = os.path.join(self.tempdir, 'ORDER2')
rc, out, err = runprog(prog, '-c', 'case_order1.yaml', order1)
self.assertEqual(0, rc)
rc, out, err = runprog(prog, '-c', 'case_order2.yaml', order2)
self.assertEqual(0, rc)
rc, out, err = runprog('/usr/bin/cmp', order1, order2)
self.assertEqual(0, rc)
class TestReuse(TempDirTestCase):
def testReuse(self):
"""Reusing screens in the yaml file should be okay"""
foo = os.path.join(self.tempdir, 'FOO')
bar = os.path.join(self.tempdir, 'BAR')
rc, out, err = runprog(prog, '-c', 'case_reuse.yaml', foo)
self.assertEqual(0, rc)
rc, out, err = runprog(prog, '-x', '-d', self.tempdir, foo)
self.assertEqual(0, rc)
os.chdir(self.tempdir)
rc, out, err = runprog(prog, '-c', 'config.yaml', bar)
self.assertEqual(0, rc)
rc, out, err = runprog('/usr/bin/cmp', foo, bar)
self.assertEqual(0, rc)
# Run these tests
if __name__ == '__main__':
varname = 'BMPBLK'
if varname not in os.environ:
print('You must specify the path to bmpblk_utility in the $%s '
'environment variable.' % varname)
sys.exit(1)
prog = os.environ[varname]
print "Testing prog...", prog
unittest.main()
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