| #!/usr/bin/env python3 |
| # -*- coding: utf-8 -*- |
| # Copyright 2019 The ChromiumOS Authors |
| # 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.""" |
| |
| |
| 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() |