test/binary_cache_builder_test.py

#!/usr/bin/env python3
#
# Copyright (C) 2021 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import filecmp
import os
import shutil
from binary_cache_builder import BinaryCacheBuilder
from simpleperf_utils import ReadElf, remove, find_tool_path
from . test_utils import TestBase, TEST_HELPER


class TestBinaryCacheBuilder(TestBase):
    def test_copy_binaries_from_symfs_dirs(self):
        readelf = ReadElf(TEST_HELPER.ndk_path)
        strip = find_tool_path('strip', arch='arm')
        self.assertIsNotNone(strip)
        symfs_dir = os.path.join(self.test_dir, 'symfs_dir')
        remove(symfs_dir)
        os.mkdir(symfs_dir)
        filename = 'simpleperf_runtest_two_functions_arm'
        origin_file = TEST_HELPER.testdata_path(filename)
        source_file = os.path.join(symfs_dir, filename)
        target_file = os.path.join('binary_cache', filename)
        expected_build_id = readelf.get_build_id(origin_file)
        binary_cache_builder = BinaryCacheBuilder(TEST_HELPER.ndk_path, False)
        binary_cache_builder.binaries['simpleperf_runtest_two_functions_arm'] = expected_build_id

        # Copy binary if target file doesn't exist.
        remove(target_file)
        self.run_cmd([strip, '--strip-all', '-o', source_file, origin_file])
        binary_cache_builder.copy_binaries_from_symfs_dirs([symfs_dir])
        self.assertTrue(filecmp.cmp(target_file, source_file))

        # Copy binary if target file doesn't have .symtab and source file has .symtab.
        self.run_cmd([strip, '--strip-debug', '-o', source_file, origin_file])
        binary_cache_builder.copy_binaries_from_symfs_dirs([symfs_dir])
        self.assertTrue(filecmp.cmp(target_file, source_file))

        # Copy binary if target file doesn't have .debug_line and source_files has .debug_line.
        shutil.copy(origin_file, source_file)
        binary_cache_builder.copy_binaries_from_symfs_dirs([symfs_dir])
        self.assertTrue(filecmp.cmp(target_file, source_file))

    def test_copy_elf_without_build_id_from_symfs_dir(self):
        binary_cache_builder = BinaryCacheBuilder(TEST_HELPER.ndk_path, False)
        binary_cache_builder.binaries['elf'] = ''
        symfs_dir = TEST_HELPER.testdata_path('data/symfs_without_build_id')
        source_file = os.path.join(symfs_dir, 'elf')
        target_file = os.path.join('binary_cache', 'elf')
        binary_cache_builder.copy_binaries_from_symfs_dirs([symfs_dir])
        self.assertTrue(filecmp.cmp(target_file, source_file))
        binary_cache_builder.pull_binaries_from_device()
        self.assertTrue(filecmp.cmp(target_file, source_file))