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#!/usr/bin/python
# Copyright 2015 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import symbol_extractor
import unittest
class TestSymbolInfo(unittest.TestCase):
def testIgnoresBlankLine(self):
symbol_info = symbol_extractor._FromObjdumpLine('')
self.assertIsNone(symbol_info)
def testIgnoresMalformedLine(self):
# This line is too short.
line = ('00c1b228 F .text 00000060 _ZN20trace_event')
symbol_info = symbol_extractor._FromObjdumpLine(line)
self.assertIsNone(symbol_info)
# This line has the wrong marker.
line = '00c1b228 l f .text 00000060 _ZN20trace_event'
symbol_info = symbol_extractor._FromObjdumpLine(line)
self.assertIsNone(symbol_info)
def testAssertionErrorOnInvalidLines(self):
# This line has an invalid scope.
line = ('00c1b228 z F .text 00000060 _ZN20trace_event')
self.assertRaises(AssertionError, symbol_extractor._FromObjdumpLine, line)
# This line has too many fields.
line = ('00c1b228 l F .text 00000060 _ZN20trace_event too many')
self.assertRaises(AssertionError, symbol_extractor._FromObjdumpLine, line)
# This line has invalid characters in the symbol.
line = ('00c1b228 l F .text 00000060 _ZN20trace_?bad')
self.assertRaises(AssertionError, symbol_extractor._FromObjdumpLine, line)
# This line has an invalid character at the start of the symbol name.
line = ('00c1b228 l F .text 00000060 $_ZN20trace_bad')
self.assertRaises(AssertionError, symbol_extractor._FromObjdumpLine, line)
def testSymbolInfo(self):
line = ('00c1c05c l F .text 0000002c '
'_GLOBAL__sub_I_chrome_main_delegate.cc')
test_name = '_GLOBAL__sub_I_chrome_main_delegate.cc'
test_offset = 0x00c1c05c
test_size = 0x2c
test_section = '.text'
symbol_info = symbol_extractor._FromObjdumpLine(line)
self.assertIsNotNone(symbol_info)
self.assertEquals(test_offset, symbol_info.offset)
self.assertEquals(test_size, symbol_info.size)
self.assertEquals(test_name, symbol_info.name)
self.assertEquals(test_section, symbol_info.section)
def testHiddenSymbol(self):
line = ('00c1c05c l F .text 0000002c '
'.hidden _GLOBAL__sub_I_chrome_main_delegate.cc')
test_name = '_GLOBAL__sub_I_chrome_main_delegate.cc'
test_offset = 0x00c1c05c
test_size = 0x2c
test_section = '.text'
symbol_info = symbol_extractor._FromObjdumpLine(line)
self.assertIsNotNone(symbol_info)
self.assertEquals(test_offset, symbol_info.offset)
self.assertEquals(test_size, symbol_info.size)
self.assertEquals(test_name, symbol_info.name)
self.assertEquals(test_section, symbol_info.section)
def testDollarInSymbolName(self):
# A $ character elsewhere in the symbol name is fine.
# This is an example of a lambda function name from Clang.
line = ('00c1b228 l F .text 00000060 _ZZL11get_globalsvENK3$_1clEv')
symbol_info = symbol_extractor._FromObjdumpLine(line)
self.assertIsNotNone(symbol_info)
self.assertEquals(0xc1b228, symbol_info.offset)
self.assertEquals(0x60, symbol_info.size)
self.assertEquals('_ZZL11get_globalsvENK3$_1clEv', symbol_info.name)
self.assertEquals('.text', symbol_info.section)
class TestSymbolInfosFromStream(unittest.TestCase):
def testSymbolInfosFromStream(self):
lines = ['Garbage',
'',
'00c1c05c l F .text 0000002c first',
''
'more garbage',
'00155 g F .text 00000012 second']
symbol_infos = symbol_extractor._SymbolInfosFromStream(lines)
self.assertEquals(len(symbol_infos), 2)
first = symbol_extractor.SymbolInfo('first', 0x00c1c05c, 0x2c, '.text')
self.assertEquals(first, symbol_infos[0])
second = symbol_extractor.SymbolInfo('second', 0x00155, 0x12, '.text')
self.assertEquals(second, symbol_infos[1])
class TestSymbolInfoMappings(unittest.TestCase):
def setUp(self):
self.symbol_infos = [
symbol_extractor.SymbolInfo('firstNameAtOffset', 0x42, 42, '.text'),
symbol_extractor.SymbolInfo('secondNameAtOffset', 0x42, 42, '.text'),
symbol_extractor.SymbolInfo('thirdSymbol', 0x64, 20, '.text')]
def testGroupSymbolInfosByOffset(self):
offset_to_symbol_info = symbol_extractor.GroupSymbolInfosByOffset(
self.symbol_infos)
self.assertEquals(len(offset_to_symbol_info), 2)
self.assertIn(0x42, offset_to_symbol_info)
self.assertEquals(offset_to_symbol_info[0x42][0], self.symbol_infos[0])
self.assertEquals(offset_to_symbol_info[0x42][1], self.symbol_infos[1])
self.assertIn(0x64, offset_to_symbol_info)
self.assertEquals(offset_to_symbol_info[0x64][0], self.symbol_infos[2])
def testCreateNameToSymbolInfo(self):
name_to_symbol_info = symbol_extractor.CreateNameToSymbolInfo(
self.symbol_infos)
self.assertEquals(len(name_to_symbol_info), 3)
for i in range(3):
name = self.symbol_infos[i].name
self.assertIn(name, name_to_symbol_info)
self.assertEquals(self.symbol_infos[i], name_to_symbol_info[name])
def testSymbolCollisions(self):
symbol_infos_with_collision = list(self.symbol_infos)
symbol_infos_with_collision.append(symbol_extractor.SymbolInfo(
'secondNameAtOffset', 0x84, 42, '.text'))
# The symbol added above should not affect the output.
name_to_symbol_info = symbol_extractor.CreateNameToSymbolInfo(
self.symbol_infos)
self.assertEquals(len(name_to_symbol_info), 3)
for i in range(3):
name = self.symbol_infos[i].name
self.assertIn(name, name_to_symbol_info)
self.assertEquals(self.symbol_infos[i], name_to_symbol_info[name])
if __name__ == '__main__':
unittest.main()
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