# Copyright 2016 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 functions in `assign_stable_images`. """ import mock import unittest import common from autotest_lib.site_utils.stable_images import assign_stable_images from autotest_lib.site_utils.stable_images import build_data _DEFAULT_BOARD = assign_stable_images._DEFAULT_BOARD class GetFirmwareUpgradesTests(unittest.TestCase): """Tests for _get_firmware_upgrades.""" @mock.patch.object(build_data, 'get_firmware_versions') def test_get_firmware_upgrades(self, mock_get_firmware_versions): """Test _get_firmware_upgrades.""" mock_get_firmware_versions.side_effect = [ {'auron_paine': 'fw_version'}, {'blue': 'fw_version', 'robo360': 'fw_version', 'porbeagle': 'fw_version'} ] cros_versions = { 'coral': 'R64-10176.65.0', 'auron_paine': 'R64-10176.65.0' } boards = ['auron_paine', 'coral'] firmware_upgrades = assign_stable_images._get_firmware_upgrades( cros_versions) expected_firmware_upgrades = { 'auron_paine': 'fw_version', 'blue': 'fw_version', 'robo360': 'fw_version', 'porbeagle': 'fw_version' } self.assertEqual(firmware_upgrades, expected_firmware_upgrades) class GetUpgradeTests(unittest.TestCase): """Tests for the `_get_upgrade_versions()` function.""" # _VERSIONS - a list of sample version strings such as may be used # for Chrome OS, sorted from oldest to newest. These are used to # construct test data in multiple test cases, below. _VERSIONS = ['R1-1.0.0', 'R1-1.1.0', 'R2-4.0.0'] def test_board_conversions(self): """ Test proper mapping of names from the AFE to Omaha. Board names in Omaha don't have '_' characters; when an AFE board contains '_' characters, they must be converted to '-'. Assert that for various forms of name in the AFE mapping, the converted name is the one looked up in the Omaha mapping. """ board_equivalents = [ ('a-b', 'a-b'), ('c_d', 'c-d'), ('e_f-g', 'e-f-g'), ('hi', 'hi')] afe_versions = { _DEFAULT_BOARD: self._VERSIONS[0] } omaha_versions = {} expected = {} boards = set() for afe_board, omaha_board in board_equivalents: boards.add(afe_board) afe_versions[afe_board] = self._VERSIONS[1] omaha_versions[omaha_board] = self._VERSIONS[2] expected[afe_board] = self._VERSIONS[2] upgrades, _ = assign_stable_images._get_upgrade_versions( afe_versions, omaha_versions, boards) self.assertEqual(upgrades, expected) def test_afe_default(self): """ Test that the AFE default board mapping is honored. If a board isn't present in the AFE dictionary, the mapping for `_DEFAULT_BOARD` should be used. Primary assertions: * When a board is present in the AFE mapping, its version mapping is used. * When a board is not present in the AFE mapping, the default version mapping is used. Secondarily, assert that when a mapping is absent from Omaha, the AFE mapping is left unchanged. """ afe_versions = { _DEFAULT_BOARD: self._VERSIONS[0], 'a': self._VERSIONS[1] } boards = set(['a', 'b']) expected = { 'a': self._VERSIONS[1], 'b': self._VERSIONS[0] } upgrades, _ = assign_stable_images._get_upgrade_versions( afe_versions, {}, boards) self.assertEqual(upgrades, expected) def test_omaha_upgrade(self): """ Test that upgrades from Omaha are detected. Primary assertion: * If a board is found in Omaha, and the version in Omaha is newer than the AFE version, the Omaha version is the one used. Secondarily, asserts that version comparisons between various specific version strings are all correct. """ boards = set(['a']) for i in range(0, len(self._VERSIONS) - 1): afe_versions = {_DEFAULT_BOARD: self._VERSIONS[i]} for j in range(i+1, len(self._VERSIONS)): omaha_versions = {b: self._VERSIONS[j] for b in boards} upgrades, _ = assign_stable_images._get_upgrade_versions( afe_versions, omaha_versions, boards) self.assertEqual(upgrades, omaha_versions) def test_no_upgrade(self): """ Test that if Omaha is behind the AFE, it is ignored. Primary assertion: * If a board is found in Omaha, and the version in Omaha is older than the AFE version, the AFE version is the one used. Secondarily, asserts that version comparisons between various specific version strings are all correct. """ boards = set(['a']) for i in range(1, len(self._VERSIONS)): afe_versions = {_DEFAULT_BOARD: self._VERSIONS[i]} expected = {b: self._VERSIONS[i] for b in boards} for j in range(0, i): omaha_versions = {b: self._VERSIONS[j] for b in boards} upgrades, _ = assign_stable_images._get_upgrade_versions( afe_versions, omaha_versions, boards) self.assertEqual(upgrades, expected) def test_ignore_unused_boards(self): """ Test that unlisted boards are ignored. Assert that boards present in the AFE or Omaha mappings aren't included in the return mappings when they aren't in the passed in set of boards. """ unused_boards = set(['a', 'b']) used_boards = set(['c', 'd']) afe_versions = {b: self._VERSIONS[0] for b in unused_boards} afe_versions[_DEFAULT_BOARD] = self._VERSIONS[1] expected = {b: self._VERSIONS[1] for b in used_boards} omaha_versions = expected.copy() omaha_versions.update( {b: self._VERSIONS[0] for b in unused_boards}) upgrades, _ = assign_stable_images._get_upgrade_versions( afe_versions, omaha_versions, used_boards) self.assertEqual(upgrades, expected) def test_default_unchanged(self): """ Test correct handling when the default build is unchanged. Assert that if in Omaha, one board in a set of three upgrades from the AFE default, that the returned default board mapping is the original default in the AFE. """ boards = set(['a', 'b', 'c']) afe_versions = {_DEFAULT_BOARD: self._VERSIONS[0]} omaha_versions = {b: self._VERSIONS[0] for b in boards} omaha_versions['c'] = self._VERSIONS[1] _, new_default = assign_stable_images._get_upgrade_versions( afe_versions, omaha_versions, boards) self.assertEqual(new_default, self._VERSIONS[0]) def test_default_upgrade(self): """ Test correct handling when the default build must change. Assert that if in Omaha, two boards in a set of three upgrade from the AFE default, that the returned default board mapping is the new build in Omaha. """ boards = set(['a', 'b', 'c']) afe_versions = {_DEFAULT_BOARD: self._VERSIONS[0]} omaha_versions = {b: self._VERSIONS[1] for b in boards} omaha_versions['c'] = self._VERSIONS[0] _, new_default = assign_stable_images._get_upgrade_versions( afe_versions, omaha_versions, boards) self.assertEqual(new_default, self._VERSIONS[1]) # Sample version string values to be used when testing # `_apply_upgrades()`. # # _OLD_DEFAULT - Test value representing the default version mapping # in the `old_versions` dictionary in a call to `_apply_upgrades()`. # _NEW_DEFAULT - Test value representing the default version mapping # in the `new_versions` dictionary when a version update is being # tested. # _OLD_VERSION - Test value representing an arbitrary version for a # board that is mapped in the `old_versions` dictionary in a call to # `_apply_upgrades()`. # _NEW_VERSION - Test value representing an arbitrary version for a # board that is mapped in the `new_versions` dictionary in a call to # `_apply_upgrades()`. # _OLD_DEFAULT = 'old-default-version' _NEW_DEFAULT = 'new-default-version' _OLD_VERSION = 'old-board-version' _NEW_VERSION = 'new-board-version' class _StubAFE(object): """Stubbed out version of `server.frontend.AFE`.""" CROS_IMAGE_TYPE = 'cros-image-type' FIRMWARE_IMAGE_TYPE = 'firmware-image-type' def get_stable_version_map(self, image_type): return image_type class _TestUpdater(assign_stable_images._VersionUpdater): """ Subclass of `_VersionUpdater` for testing. This class extends `_VersionUpdater` to provide support for testing various assertions about the behavior of the base class and its interactions with `_apply_cros_upgrades()` and `_apply_firmware_upgrades()`. The class tests assertions along the following lines: * When applied to the original mappings, the calls to `_do_set_mapping()` and `_do_delete_mapping()` create the expected final mapping state. * Calls to report state changes are made with the expected values. * There's a one-to-one match between reported and actually executed changes. """ def __init__(self, testcase): super(_TestUpdater, self).__init__(_StubAFE(), dry_run=True) self._testcase = testcase self._default_changed = None self._reported_mappings = None self._updated_mappings = None self._reported_deletions = None self._actual_deletions = None self._original_mappings = None self._mappings = None self._expected_mappings = None self._unchanged_boards = None def pretest_init(self, initial_versions, expected_versions): """ Initialize for testing. @param initial_versions Mappings to be used as the starting point for testing. @param expected_versions The expected final value of the mappings after the test. """ self._default_changed = False self._reported_mappings = {} self._updated_mappings = {} self._reported_deletions = set() self._actual_deletions = set() self._original_mappings = initial_versions.copy() self._mappings = initial_versions.copy() self._expected_mappings = expected_versions self._unchanged_boards = set() def check_results(self, change_default): """ Assert that observed changes match expectations. Asserts the following: * The `report_default_changed()` method was called (or not) based on whether `change_default` is true (or not). * The changes reported via `_report_board_changed()` match the changes actually applied. * The final mappings after applying requested changes match the actually expected mappings. @param old_versions Parameter to be passed to `_apply_cros_upgrades()`. @param new_versions Parameter to be passed to `_apply_cros_upgrades()`. @param change_default Whether the test should include a change to the default version mapping. """ self._testcase.assertEqual(change_default, self._default_changed) self._testcase.assertEqual(self._reported_mappings, self._updated_mappings) self._testcase.assertEqual(self._reported_deletions, self._actual_deletions) self._testcase.assertEqual(self._mappings, self._expected_mappings) def report_default_changed(self, old_default, new_default): """ Override of our parent class' method for test purposes. Saves a record of the report for testing the final result in `apply_upgrades()`, above. Assert the following: * The old and new default values match the values that were passed in the original call's arguments. * This function is not being called for a second time. @param old_default The original default version. @param new_default The new default version to be applied. """ self._testcase.assertNotEqual(old_default, new_default) self._testcase.assertEqual(old_default, self._original_mappings[_DEFAULT_BOARD]) self._testcase.assertEqual(new_default, self._expected_mappings[_DEFAULT_BOARD]) self._testcase.assertFalse(self._default_changed) self._default_changed = True self._reported_mappings[_DEFAULT_BOARD] = new_default def _report_board_changed(self, board, old_version, new_version): """ Override of our parent class' method for test purposes. Saves a record of the report for testing the final result in `apply_upgrades()`, above. Assert the following: * The change being reported actually reports two different versions. * If the board isn't mapped to the default version, then the reported old version is the actually mapped old version. * If the board isn't changing to the default version, then the reported new version is the expected new version. * This is not a second report for this board. The implementation implicitly requires that the specified board have a valid mapping. @param board The board with the changing version. @param old_version The original version mapped to the board. @param new_version The new version to be applied to the board. """ self._testcase.assertNotEqual(old_version, new_version) if board in self._original_mappings: self._testcase.assertEqual(old_version, self._original_mappings[board]) if board in self._expected_mappings: self._testcase.assertEqual(new_version, self._expected_mappings[board]) self._testcase.assertNotIn(board, self._reported_mappings) self._reported_mappings[board] = new_version else: self._testcase.assertNotIn(board, self._reported_deletions) self._reported_deletions.add(board) def report_board_unchanged(self, board, old_version): """ Override of our parent class' method for test purposes. Assert the following: * The version being reported as unchanged is actually mapped. * The reported old version matches the expected value. * This is not a second report for this board. @param board The board that is not changing. @param old_version The board's version mapping. """ self._testcase.assertIn(board, self._original_mappings) self._testcase.assertEqual(old_version, self._original_mappings[board]) self._testcase.assertNotIn(board, self._unchanged_boards) self._unchanged_boards.add(board) def _do_set_mapping(self, board, new_version): """ Override of our parent class' method for test purposes. Saves a record of the change for testing the final result in `apply_upgrades()`, above. Assert the following: * This is not a second change for this board. * If we're changing the default mapping, then every board that will be changing to a non-default mapping has been updated. @param board The board with the changing version. @param new_version The new version to be applied to the board. """ self._mappings[board] = new_version self._testcase.assertNotIn(board, self._updated_mappings) self._updated_mappings[board] = new_version if board == _DEFAULT_BOARD: for board in self._expected_mappings: self._testcase.assertIn(board, self._mappings) def _do_delete_mapping(self, board): """ Override of our parent class' method for test purposes. Saves a record of the change for testing the final result in `apply_upgrades()`, above. Assert that the board has a mapping prior to deletion. @param board The board with the version to be deleted. """ self._testcase.assertNotEqual(board, _DEFAULT_BOARD) self._testcase.assertIn(board, self._mappings) del self._mappings[board] self._actual_deletions.add(board) class ApplyCrOSUpgradesTests(unittest.TestCase): """Tests for the `_apply_cros_upgrades()` function.""" def _apply_upgrades(self, old_versions, new_versions, change_default): """ Test a single call to `_apply_cros_upgrades()`. All assertions are handled by an instance of `_TestUpdater`. @param old_versions Parameter to be passed to `_apply_cros_upgrades()`. @param new_versions Parameter to be passed to `_apply_cros_upgrades()`. @param change_default Whether the test should include a change to the default version mapping. """ old_versions[_DEFAULT_BOARD] = _OLD_DEFAULT if change_default: new_default = _NEW_DEFAULT else: new_default = _OLD_DEFAULT expected_versions = { b: v for b, v in new_versions.items() if v != new_default } expected_versions[_DEFAULT_BOARD] = new_default updater = _TestUpdater(self) updater.pretest_init(old_versions, expected_versions) assign_stable_images._apply_cros_upgrades( updater, old_versions, new_versions, new_default) updater.check_results(change_default) def test_no_changes(self): """ Test an empty upgrade that does nothing. Test the boundary case of an upgrade where there are no boards, and the default does not change. """ self._apply_upgrades({}, {}, False) def test_change_default(self): """ Test an empty upgrade that merely changes the default. Test the boundary case of an upgrade where there are no boards, but the default is upgraded. """ self._apply_upgrades({}, {}, True) def test_board_default_no_changes(self): """ Test that a board at default stays with an unchanged default. Test the case of a board that is mapped to the default, where neither the board nor the default change. """ self._apply_upgrades({}, {'board': _OLD_DEFAULT}, False) def test_board_left_behind(self): """ Test a board left at the old default after a default upgrade. Test the case of a board that stays mapped to the old default as the default board is upgraded. """ self._apply_upgrades({}, {'board': _OLD_DEFAULT}, True) def test_board_upgrade_from_default(self): """ Test upgrading a board from a default that doesn't change. Test the case of upgrading a board from default to non-default, where the default doesn't change. """ self._apply_upgrades({}, {'board': _NEW_VERSION}, False) def test_board_and_default_diverge(self): """ Test upgrading a board that diverges from the default. Test the case of upgrading a board and default together from the same to different versions. """ self._apply_upgrades({}, {'board': _NEW_VERSION}, True) def test_board_tracks_default(self): """ Test upgrading a board to track a default upgrade. Test the case of upgrading a board and the default together. """ self._apply_upgrades({}, {'board': _NEW_DEFAULT}, True) def test_board_non_default_no_changes(self): """ Test an upgrade with no changes to a board or the default. Test the case of an upgrade with a board in it, where neither the board nor the default change. """ self._apply_upgrades({'board': _NEW_VERSION}, {'board': _NEW_VERSION}, False) def test_board_upgrade_and_keep_default(self): """ Test a board upgrade with an unchanged default. Test the case of upgrading a board while the default stays the same. """ self._apply_upgrades({'board': _OLD_VERSION}, {'board': _NEW_VERSION}, False) def test_board_upgrade_and_change_default(self): """ Test upgrading a board and the default separately. Test the case of upgrading both a board and the default, each from and to different versions. """ self._apply_upgrades({'board': _OLD_VERSION}, {'board': _NEW_VERSION}, True) def test_board_leads_default(self): """ Test a board that upgrades ahead of the new default. Test the case of upgrading both a board and the default, where the board's old version is the new default version. """ self._apply_upgrades({'board': _NEW_DEFAULT}, {'board': _NEW_VERSION}, True) def test_board_lags_to_old_default(self): """ Test a board that upgrades behind the old default. Test the case of upgrading both a board and the default, where the board's new version is the old default version. """ self._apply_upgrades({'board': _OLD_VERSION}, {'board': _OLD_DEFAULT}, True) def test_board_joins_old_default(self): """ Test upgrading a board to a default that doesn't change. Test the case of upgrading board to the default, where the default mapping stays unchanged. """ self._apply_upgrades({'board': _OLD_VERSION}, {'board': _OLD_DEFAULT}, False) def test_board_joins_new_default(self): """ Test upgrading a board to match the new default. Test the case of upgrading board and the default to the same version. """ self._apply_upgrades({'board': _OLD_VERSION}, {'board': _NEW_DEFAULT}, True) def test_board_becomes_default(self): """ Test a board that becomes default after a default upgrade. Test the case of upgrading the default to a version already mapped for an existing board. """ self._apply_upgrades({'board': _NEW_DEFAULT}, {'board': _NEW_DEFAULT}, True) class ApplyFirmwareUpgradesTests(unittest.TestCase): """Tests for the `_apply_firmware_upgrades()` function.""" def _apply_upgrades(self, old_versions, new_versions): """ Test a single call to `_apply_firmware_upgrades()`. All assertions are handled by an instance of `_TestUpdater`. @param old_versions Parameter to be passed to `_apply_firmware_upgrades()`. @param new_versions Parameter to be passed to `_apply_firmware_upgrades()`. """ updater = _TestUpdater(self) updater.pretest_init(old_versions, new_versions) assign_stable_images._apply_firmware_upgrades( updater, old_versions, new_versions) updater.check_results(False) def test_no_changes(self): """ Test an empty upgrade that does nothing. Test the boundary case of an upgrade where there are no boards. """ self._apply_upgrades({}, {}) def test_board_added(self): """ Test an upgrade that adds a new board. Test the case of an upgrade where a board that was previously unmapped is added. """ self._apply_upgrades({}, {'board': _NEW_VERSION}) def test_board_unchanged(self): """ Test an upgrade with no changes to a board. Test the case of an upgrade with a board that stays the same. """ self._apply_upgrades({'board': _NEW_VERSION}, {'board': _NEW_VERSION}) def test_board_upgrade_and_change_default(self): """ Test upgrading a board. Test the case of upgrading a board to a new version. """ self._apply_upgrades({'board': _OLD_VERSION}, {'board': _NEW_VERSION}) if __name__ == '__main__': unittest.main()