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#!/usr/bin/env python3
# -*- coding: utf-8 -*-"
# Copyright 2020 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 util_precompile.py'
import pickle
import unittest
import zlib
import util_precompile
class TestUtilPrecompile(unittest.TestCase):
'Test class for testing various util_precompile.py functions'
def test_generate_cmsg_line(self):
'Test generating of cmsgX() lines from format messages/arguments'
# A tuple of tuples of typical format strings, following the matching
# number of parameters, the last element is the expected parameter
# description mask, describing the variety of format specifications in
# the format string.
inputs = (('"%s\n', 'errmsgs[rv]', 3),
('%d', 10, 1),
('"no format"', ),
('[%pT CCD state:', '((void *)0)', 7),
('%08x: DIO%c%-2d %2d %3s%3s%3s%4s ',
1, 2, 3, 4, 5, 6, 6, 7, 858984721))
string_indices = []
for inp in inputs:
fmt = inp[0]
if len(inp) > 1:
params = inp[1:-1]
mask = inp[-1]
else:
params = []
mask = None
blocks = fmt.split('%')[1:]
line = util_precompile.generate_cmsg_line(
fmt, params, fmt.split('%')[1:], 'chan', 'func')
exp_start = 'cmsg%d(chan, ' % len(blocks)
if params:
args = '%s' % (', '.join(['(uintptr_t)(%s)' % x
for x in params]))
exp_end = ', %d, %s);\n' % (mask, args)
else:
exp_end = ');\n'
try:
self.assertTrue(line.startswith(exp_start))
self.assertTrue(line.endswith(exp_end))
except AssertionError:
print('line: %s\nexp_start: %s\nexp_end: %s' % (
line, exp_start, exp_end))
raise
line = line.replace(exp_start, '', 1)
line = line.replace(exp_end, '', 1)
string_indices.append(int(line))
# Verify the contents of the generated blob
zipped = util_precompile.generate_blob()
dump = zlib.decompress(zipped)
strings = pickle.loads(dump).split('\0')
for inp, index in zip(inputs, string_indices):
string = inp[0]
self.assertTrue(strings[index] == string)
def test_tokenize(self):
'Verify tokenize() function ability to parse vararg string'
in_tokens = (
'"simple string"',
'"another string, with a comma"',
'"string split" " in two"',
'"string with \\"escaped\\" double quotes"',
'(&(const struct hex_buffer_params)'
'{ .buffer = (ec_efs_ctx.hash), .size = (32) })')
out_tokens = util_precompile.tokenize(', '.join(in_tokens))
for in_t, out_t in zip(in_tokens, out_tokens):
self.assertEqual(in_t, out_t)
def test_line_processor(self):
'Test line processor class ability to consolidate preprocessor lines'
# Reset the string dictionary.
util_precompile.FMT_DICT = {}
in_out_tuples = (
(
""" cprintf(CC_COMMAND, "Last attempt returned " "%d\\n", rv)
;""",
' cmsg1(CC_COMMAND, 0, 1, (uintptr_t)(rv));\n'
), (
' cprintf(CC_COMMAND, "ec_hash_secdata : %ph\\n", '
'(&(const struct hex_buffer_params)'
'{ .buffer = (ec_efs_ctx.hash), .size = (32) }));',
' cmsg1(CC_COMMAND, 1, 5, (uintptr_t)((&(const struct '
'hex_buffer_params)'
'{ .buffer = (ec_efs_ctx.hash), .size = (32) })));\n'
), (
'struct ec_params_get_cmd_versions {',
'struct ec_params_get_cmd_versions {',
), (
' cprints(CC_CCD, "CCD test lab mode %sbled", v '
'? "ena" : "disa");',
' cmsg1(CC_CCD, 2, 3, (uintptr_t)(v ? "ena" : "disa"));\n'
), (
' cprintf(CC_COMMAND, "%s: deleting var failed!\\n", '
'__func__);',
' cmsg1(CC_COMMAND, 3, 6, (uintptr_t)4);\n'
), (
' return cprintf(CC_COMMAND, "%s: done!\\n", __func__);',
' return cmsg1(CC_COMMAND, 5, 6, (uintptr_t)4);\n'
)
)
line_processor = util_precompile.LineProcessor()
for inp, outp in in_out_tuples:
result = ''
for line in inp.splitlines():
section = line_processor.process_preprocessor_line(line)
if section:
result += section
self.assertEqual(result, outp)
try:
string_index = int(outp.split(',')[1])
except IndexError:
# This is the line without a print statement.
continue
fmt = inp.split(',')[1].strip()
for key, value in util_precompile.FMT_DICT.items():
if value == string_index:
fmt = fmt.replace('" "', '')
fmt = fmt.replace('\\n', '\n')
fmt = fmt.strip('"')
if 'cprints' in inp:
fmt = '[^T' + fmt
self.assertEqual(fmt, key)
break
else:
self.fail('did not find "%s" in the dictionary')
def test_drop_escapes(self):
'Verify proper conversion of escape characters'
insouts = (('\\a\\b\\f\\n\\r\\t\\v\'"\\\\',
'\a\b\f\n\r\t\v\'"\\'),
('line \\x1a with two hex escapes \\x1b\\n',
'line \x1a with two hex escapes \x1b\n'))
for i, o in insouts:
self.assertEqual(o, util_precompile.drop_escapes(i))
if __name__ == '__main__':
unittest.main()
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