| #!/usr/bin/env python3 |
| # -*- coding: utf-8 -*- |
| # Copyright 2019 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 retrieving the LLVM hash.""" |
| |
| from __future__ import print_function |
| |
| import subprocess |
| import unittest |
| import unittest.mock as mock |
| |
| import get_llvm_hash |
| from get_llvm_hash import LLVMHash |
| |
| # We grab protected stuff from get_llvm_hash. That's OK. |
| # pylint: disable=protected-access |
| |
| |
| def MakeMockPopen(return_code): |
| |
| def MockPopen(*_args, **_kwargs): |
| result = mock.MagicMock() |
| result.returncode = return_code |
| |
| communicate_result = result.communicate.return_value |
| # Communicate returns stdout, stderr. |
| communicate_result.__iter__.return_value = (None, 'some stderr') |
| return result |
| |
| return MockPopen |
| |
| |
| class TestGetLLVMHash(unittest.TestCase): |
| """The LLVMHash test class.""" |
| |
| @mock.patch.object(subprocess, 'Popen') |
| def testCloneRepoSucceedsWhenGitSucceeds(self, popen_mock): |
| popen_mock.side_effect = MakeMockPopen(return_code=0) |
| llvm_hash = LLVMHash() |
| |
| into_tempdir = '/tmp/tmpTest' |
| llvm_hash.CloneLLVMRepo(into_tempdir) |
| popen_mock.assert_called_with( |
| ['git', 'clone', get_llvm_hash._LLVM_GIT_URL, into_tempdir], |
| stderr=subprocess.PIPE) |
| |
| @mock.patch.object(subprocess, 'Popen') |
| def testCloneRepoFailsWhenGitFails(self, popen_mock): |
| popen_mock.side_effect = MakeMockPopen(return_code=1) |
| |
| with self.assertRaises(ValueError) as err: |
| LLVMHash().CloneLLVMRepo('/tmp/tmp1') |
| |
| self.assertIn('Failed to clone', str(err.exception.args)) |
| self.assertIn('some stderr', str(err.exception.args)) |
| |
| @mock.patch.object(get_llvm_hash, 'GetGitHashFrom') |
| def testGetGitHashWorks(self, mock_get_git_hash): |
| mock_get_git_hash.return_value = 'a13testhash2' |
| |
| self.assertEqual( |
| get_llvm_hash.GetGitHashFrom('/tmp/tmpTest', 100), 'a13testhash2') |
| |
| mock_get_git_hash.assert_called_once() |
| |
| @mock.patch.object(LLVMHash, 'GetLLVMHash') |
| @mock.patch.object(get_llvm_hash, 'GetGoogle3LLVMVersion') |
| def testReturnGoogle3LLVMHash(self, mock_google3_llvm_version, |
| mock_get_llvm_hash): |
| mock_get_llvm_hash.return_value = 'a13testhash3' |
| mock_google3_llvm_version.return_value = 1000 |
| self.assertEqual(LLVMHash().GetGoogle3LLVMHash(), 'a13testhash3') |
| mock_get_llvm_hash.assert_called_once_with(1000) |
| |
| @mock.patch.object(LLVMHash, 'GetLLVMHash') |
| @mock.patch.object(get_llvm_hash, 'GetGoogle3LLVMVersion') |
| def testReturnGoogle3UnstableLLVMHash(self, mock_google3_llvm_version, |
| mock_get_llvm_hash): |
| mock_get_llvm_hash.return_value = 'a13testhash3' |
| mock_google3_llvm_version.return_value = 1000 |
| self.assertEqual(LLVMHash().GetGoogle3UnstableLLVMHash(), 'a13testhash3') |
| mock_get_llvm_hash.assert_called_once_with(1000) |
| |
| @mock.patch.object(subprocess, 'check_output') |
| def testSuccessfullyGetGitHashFromToTOfLLVM(self, mock_check_output): |
| mock_check_output.return_value = 'a123testhash1 path/to/main\n' |
| self.assertEqual(LLVMHash().GetTopOfTrunkGitHash(), 'a123testhash1') |
| mock_check_output.assert_called_once() |
| |
| @mock.patch.object(subprocess, 'Popen') |
| def testCheckoutBranch(self, mock_popen): |
| mock_popen.return_value = mock.MagicMock( |
| communicate=lambda: (None, None), returncode=0) |
| get_llvm_hash.CheckoutBranch('fake/src_dir', 'fake_branch') |
| self.assertEqual( |
| mock_popen.call_args_list[0][0], |
| (['git', '-C', 'fake/src_dir', 'checkout', 'fake_branch'],)) |
| self.assertEqual(mock_popen.call_args_list[1][0], |
| (['git', '-C', 'fake/src_dir', 'pull'],)) |
| |
| def testParseLLVMMajorVersion(self): |
| cmakelist_42 = ('set(CMAKE_BUILD_WITH_INSTALL_NAME_DIR ON)\n' |
| 'if(NOT DEFINED LLVM_VERSION_MAJOR)\n' |
| ' set(LLVM_VERSION_MAJOR 42)\n' |
| 'endif()') |
| self.assertEqual(get_llvm_hash.ParseLLVMMajorVersion(cmakelist_42), '42') |
| |
| def testParseLLVMMajorVersionInvalid(self): |
| invalid_cmakelist = 'invalid cmakelist.txt contents' |
| with self.assertRaises(ValueError): |
| get_llvm_hash.ParseLLVMMajorVersion(invalid_cmakelist) |
| |
| @mock.patch.object(get_llvm_hash, 'GetAndUpdateLLVMProjectInLLVMTools') |
| @mock.patch.object(get_llvm_hash, 'ParseLLVMMajorVersion') |
| @mock.patch.object(get_llvm_hash, 'CheckCommand') |
| @mock.patch.object(get_llvm_hash, 'CheckoutBranch') |
| @mock.patch( |
| 'get_llvm_hash.open', |
| mock.mock_open(read_data='mock contents'), |
| create=True) |
| def testGetLLVMMajorVersion(self, mock_checkout_branch, mock_git_checkout, |
| mock_major_version, mock_llvm_project_path): |
| mock_llvm_project_path.return_value = 'path/to/llvm-project' |
| mock_major_version.return_value = '1234' |
| self.assertEqual(get_llvm_hash.GetLLVMMajorVersion('314159265'), '1234') |
| # Second call should be memoized |
| self.assertEqual(get_llvm_hash.GetLLVMMajorVersion('314159265'), '1234') |
| mock_llvm_project_path.assert_called_once() |
| mock_major_version.assert_called_with('mock contents') |
| mock_git_checkout.assert_called_once_with( |
| ['git', '-C', 'path/to/llvm-project', 'checkout', '314159265']) |
| mock_checkout_branch.assert_called_once_with('path/to/llvm-project', 'main') |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |