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# Copyright 2015 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.
"""This module tests the cros payload command."""
from __future__ import print_function
import collections
import os
import sys
from chromite.cbuildbot import constants
from chromite.cli.cros import cros_payload
from chromite.lib import cros_test_lib
# Needed for the dev.host.lib import below.
sys.path.insert(0, os.path.join(constants.SOURCE_ROOT, 'src', 'platform'))
# TODO(alliewood)(chromium:454629) update once update_payload is moved
# into chromite
from dev.host.lib import update_payload
from dev.host.lib.update_payload import update_metadata_pb2
class FakePayloadError(Exception):
"""A generic error when using the FakePayload."""
class FakeOption(object):
"""Fake options object for testing."""
def __init__(self, **kwargs):
self.list_ops = False
self.stats = False
self.signatures = False
for key, val in kwargs.iteritems():
setattr(self, key, val)
if not hasattr(self, 'payload_file'):
self.payload_file = None
class FakeOp(object):
"""Fake manifest operation for testing."""
def __init__(self, src_extents, dst_extents, op_type, **kwargs):
self.src_extents = src_extents
self.dst_extents = dst_extents
self.type = op_type
for key, val in kwargs.iteritems():
setattr(self, key, val)
def HasField(self, field):
return hasattr(self, field)
class FakeManifest(object):
"""Fake manifest for testing."""
def __init__(self):
FakeExtent = collections.namedtuple('FakeExtent',
['start_block', 'num_blocks'])
self.install_operations = [FakeOp([],
[FakeExtent(1, 1), FakeExtent(2, 2)],
update_payload.common.OpType.REPLACE_BZ,
dst_length=3*4096,
data_offset=1,
data_length=1)]
self.kernel_install_operations = [FakeOp(
[FakeExtent(1, 1)],
[FakeExtent(x, x) for x in xrange(20)],
update_payload.common.OpType.SOURCE_COPY,
src_length=4096)]
self.block_size = 4096
self.minor_version = 4
FakePartInfo = collections.namedtuple('FakePartInfo', ['size'])
self.old_rootfs_info = FakePartInfo(1 * 4096)
self.old_kernel_info = FakePartInfo(2 * 4096)
self.new_rootfs_info = FakePartInfo(3 * 4096)
self.new_kernel_info = FakePartInfo(4 * 4096)
self.signatures_offset = None
self.signatures_size = None
def HasField(self, field_name):
"""Fake HasField method based on the python members."""
return hasattr(self, field_name) and getattr(self, field_name) is not None
class FakePayload(object):
"""Fake payload for testing."""
def __init__(self):
FakeHeader = collections.namedtuple('FakeHeader',
['version', 'manifest_len'])
self._header = FakeHeader('111', 222)
self.header = None
self._manifest = FakeManifest()
self.manifest = None
self._blobs = {}
self._signatures = update_metadata_pb2.Signatures()
def Init(self):
"""Fake Init that sets header and manifest.
Failing to call Init() will not make header and manifest available to the
test.
"""
self.header = self._header
self.manifest = self._manifest
def ReadDataBlob(self, offset, length):
"""Return the blob that should be present at the offset location"""
if not offset in self._blobs:
raise FakePayloadError('Requested blob at unknown offset %d' % offset)
blob = self._blobs[offset]
if len(blob) != length:
raise FakePayloadError('Read blob with the wrong length (expect: %d, '
'actual: %d)' % (len(blob), length))
return blob
def AddSignature(self, **kwargs):
new_signature = self._signatures.signatures.add()
for key, val in kwargs.iteritems():
setattr(new_signature, key, val)
blob = self._signatures.SerializeToString()
self._manifest.signatures_offset = 1234
self._manifest.signatures_size = len(blob)
self._blobs[self._manifest.signatures_offset] = blob
class PayloadCommandTest(cros_test_lib.MockOutputTestCase):
"""Test class for our PayloadCommand class."""
def testDisplayValue(self):
"""Verify that DisplayValue prints what we expect."""
with self.OutputCapturer() as output:
cros_payload.DisplayValue('key', 'value')
stdout = output.GetStdout()
self.assertEquals(stdout, 'key: value\n')
def testRun(self):
"""Verify that Run parses and displays the payload like we expect."""
payload_cmd = cros_payload.PayloadCommand(FakeOption(action='show'))
self.PatchObject(update_payload, 'Payload', return_value=FakePayload())
with self.OutputCapturer() as output:
payload_cmd.Run()
stdout = output.GetStdout()
expected_out = """Payload version: 111
Manifest length: 222
Number of operations: 1
Number of kernel ops: 1
Block size: 4096
Minor version: 4
"""
self.assertEquals(stdout, expected_out)
def testListOps(self):
"""Verify that the --list_ops option gives the correct output."""
payload_cmd = cros_payload.PayloadCommand(FakeOption(list_ops=True,
action='show'))
self.PatchObject(update_payload, 'Payload', return_value=FakePayload())
with self.OutputCapturer() as output:
payload_cmd.Run()
stdout = output.GetStdout()
expected_out = """Payload version: 111
Manifest length: 222
Number of operations: 1
Number of kernel ops: 1
Block size: 4096
Minor version: 4
Install operations:
0: REPLACE_BZ
Data offset: 1
Data length: 1
Destination: 2 extents (3 blocks)
(1,1) (2,2)
Kernel install operations:
0: SOURCE_COPY
Source: 1 extent (1 block)
(1,1)
Destination: 20 extents (190 blocks)
(0,0) (1,1) (2,2) (3,3) (4,4) (5,5) (6,6) (7,7) (8,8) (9,9) (10,10)
(11,11) (12,12) (13,13) (14,14) (15,15) (16,16) (17,17) (18,18) (19,19)
"""
self.assertEquals(stdout, expected_out)
def testStats(self):
"""Verify that the --stats option works correctly."""
payload_cmd = cros_payload.PayloadCommand(FakeOption(stats=True,
action='show'))
self.PatchObject(update_payload, 'Payload', return_value=FakePayload())
with self.OutputCapturer() as output:
payload_cmd.Run()
stdout = output.GetStdout()
expected_out = """Payload version: 111
Manifest length: 222
Number of operations: 1
Number of kernel ops: 1
Block size: 4096
Minor version: 4
Blocks read: 11
Blocks written: 193
Seeks when writing: 18
"""
self.assertEquals(stdout, expected_out)
def testEmptySignatures(self):
"""Verify that the --signatures option works with unsigned payloads."""
payload_cmd = cros_payload.PayloadCommand(
FakeOption(action='show', signatures=True))
self.PatchObject(update_payload, 'Payload', return_value=FakePayload())
with self.OutputCapturer() as output:
payload_cmd.Run()
stdout = output.GetStdout()
expected_out = """Payload version: 111
Manifest length: 222
Number of operations: 1
Number of kernel ops: 1
Block size: 4096
Minor version: 4
No signatures stored in the payload
"""
self.assertEquals(stdout, expected_out)
def testSignatures(self):
"""Verify that the --signatures option shows the present signatures."""
payload_cmd = cros_payload.PayloadCommand(
FakeOption(action='show', signatures=True))
payload = FakePayload()
payload.AddSignature(version=1, data='12345678abcdefgh\x00\x01\x02\x03')
payload.AddSignature(data='I am a signature so access is yes.')
self.PatchObject(update_payload, 'Payload', return_value=payload)
with self.OutputCapturer() as output:
payload_cmd.Run()
stdout = output.GetStdout()
expected_out = """Payload version: 111
Manifest length: 222
Number of operations: 1
Number of kernel ops: 1
Block size: 4096
Minor version: 4
Signature blob: offset=1234 (64 bytes)
Payload signatures: (2 entries)
version=1, hex_data: (20 bytes)
31 32 33 34 35 36 37 38 61 62 63 64 65 66 67 68 | 12345678abcdefgh
00 01 02 03 | ....
version=None, hex_data: (34 bytes)
49 20 61 6d 20 61 20 73 69 67 6e 61 74 75 72 65 | I am a signature
20 73 6f 20 61 63 63 65 73 73 20 69 73 20 79 65 | so access is ye
73 2e | s.
"""
self.assertEquals(stdout, expected_out)
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