| #!/usr/bin/env python |
| # Copyright 2015 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. |
| |
| import itertools |
| import logging |
| import os |
| import unittest |
| |
| import common |
| from autotest_lib.server.lib import status_history |
| from autotest_lib.site_utils import lab_inventory |
| |
| |
| class _FakeHost(object): |
| """Class to mock `Host` in _FakeHostHistory for testing.""" |
| |
| def __init__(self, hostname): |
| self.hostname = hostname |
| |
| |
| class _FakeHostHistory(object): |
| """Class to mock `HostJobHistory` for testing.""" |
| |
| def __init__(self, board, pool, status, hostname=''): |
| self._board = board |
| self._pool = pool |
| self._status = status |
| self._host = _FakeHost(hostname) |
| |
| |
| @property |
| def host(self): |
| """Return the recorded host.""" |
| return self._host |
| |
| |
| @property |
| def host_board(self): |
| """Return the recorded board.""" |
| return self._board |
| |
| |
| @property |
| def host_pool(self): |
| """Return the recorded host.""" |
| return self._pool |
| |
| |
| def last_diagnosis(self): |
| """Return the recorded diagnosis.""" |
| return self._status, None |
| |
| |
| class _FakeHostLocation(object): |
| """Class to mock `HostJobHistory` for location sorting.""" |
| |
| _HOSTNAME_FORMAT = 'chromeos%d-row%d-rack%d-host%d' |
| |
| |
| def __init__(self, location): |
| self.hostname = self._HOSTNAME_FORMAT % location |
| |
| |
| @property |
| def host(self): |
| """Return a fake host object with a hostname.""" |
| return self |
| |
| |
| # Status values that may be returned by `HostJobHistory`. |
| # |
| # _NON_WORKING_STATUS_LIST - The complete list (as of this writing) |
| # of status values that the lab_inventory module treats as |
| # "broken". |
| # _WORKING - A value that counts as "working" for purposes |
| # of the lab_inventory module. |
| # _BROKEN - A value that counts as "broken" for the lab_inventory |
| # module. Since there's more than one valid choice here, we've |
| # picked one to stand for all of them. |
| |
| _NON_WORKING_STATUS_LIST = [ |
| status_history.UNUSED, |
| status_history.BROKEN, |
| status_history.UNKNOWN, |
| ] |
| |
| _WORKING = status_history.WORKING |
| _UNUSED = _NON_WORKING_STATUS_LIST[0] |
| _BROKEN = _NON_WORKING_STATUS_LIST[1] |
| _UNKNOWN = _NON_WORKING_STATUS_LIST[2] |
| |
| |
| class PoolCountTests(unittest.TestCase): |
| """Unit tests for class `_PoolCounts`. |
| |
| Coverage is quite basic: mostly just enough to make sure every |
| function gets called, and to make sure that the counting knows |
| the difference between 0 and 1. |
| |
| The testing also ensures that all known status values that |
| can be returned by `HostJobHistory` are counted as expected. |
| |
| """ |
| |
| def setUp(self): |
| super(PoolCountTests, self).setUp() |
| self._pool_counts = lab_inventory._PoolCounts() |
| |
| |
| def _add_host(self, status): |
| fake = _FakeHostHistory( |
| None, lab_inventory.SPARE_POOL, status) |
| self._pool_counts.record_host(fake) |
| |
| |
| def _check_counts(self, working, broken, idle): |
| """Check that pool counts match expectations. |
| |
| Checks that `get_working()` and `get_broken()` return the |
| given expected values. Also check that `get_total()` is the |
| sum of working and broken devices. |
| |
| @param working The expected total of working devices. |
| @param broken The expected total of broken devices. |
| |
| """ |
| self.assertEqual(self._pool_counts.get_working(), working) |
| self.assertEqual(self._pool_counts.get_broken(), broken) |
| self.assertEqual(self._pool_counts.get_idle(), idle) |
| self.assertEqual(self._pool_counts.get_total(), |
| working + broken + idle) |
| |
| |
| def test_empty(self): |
| """Test counts when there are no DUTs recorded.""" |
| self._check_counts(0, 0, 0) |
| |
| |
| def test_broken(self): |
| """Test counting for status: BROKEN.""" |
| self._add_host(_BROKEN) |
| self._check_counts(0, 1, 0) |
| |
| |
| def test_idle(self): |
| """Testing counting for idle status values.""" |
| self._add_host(_UNUSED) |
| self._check_counts(0, 0, 1) |
| self._add_host(_UNKNOWN) |
| self._check_counts(0, 0, 2) |
| |
| |
| def test_working_then_broken(self): |
| """Test counts after adding a working and then a broken DUT.""" |
| self._add_host(_WORKING) |
| self._check_counts(1, 0, 0) |
| self._add_host(_BROKEN) |
| self._check_counts(1, 1, 0) |
| |
| |
| def test_broken_then_working(self): |
| """Test counts after adding a broken and then a working DUT.""" |
| self._add_host(_BROKEN) |
| self._check_counts(0, 1, 0) |
| self._add_host(_WORKING) |
| self._check_counts(1, 1, 0) |
| |
| |
| class BoardCountTests(unittest.TestCase): |
| """Unit tests for class `_BoardCounts`. |
| |
| Coverage is quite basic: just enough to make sure every |
| function gets called, and to make sure that the counting |
| knows the difference between 0 and 1. |
| |
| The tests make sure that both individual pool counts and |
| totals are counted correctly. |
| |
| """ |
| |
| def setUp(self): |
| super(BoardCountTests, self).setUp() |
| self._board_counts = lab_inventory._BoardCounts() |
| |
| |
| def _add_host(self, pool, status): |
| fake = _FakeHostHistory(None, pool, status) |
| self._board_counts.record_host(fake) |
| |
| |
| def _check_all_counts(self, working, broken): |
| """Check that total counts for all pools match expectations. |
| |
| Checks that `get_working()` and `get_broken()` return the |
| given expected values when called without a pool specified. |
| Also check that `get_total()` is the sum of working and |
| broken devices. |
| |
| Additionally, call the various functions for all the pools |
| individually, and confirm that the totals across pools match |
| the given expectations. |
| |
| @param working The expected total of working devices. |
| @param broken The expected total of broken devices. |
| |
| """ |
| self.assertEqual(self._board_counts.get_working(), working) |
| self.assertEqual(self._board_counts.get_broken(), broken) |
| self.assertEqual(self._board_counts.get_total(), |
| working + broken) |
| count_working = 0 |
| count_broken = 0 |
| count_total = 0 |
| for pool in lab_inventory.MANAGED_POOLS: |
| count_working += self._board_counts.get_working(pool) |
| count_broken += self._board_counts.get_broken(pool) |
| count_total += self._board_counts.get_total(pool) |
| self.assertEqual(count_working, working) |
| self.assertEqual(count_broken, broken) |
| self.assertEqual(count_total, working + broken) |
| |
| |
| def _check_pool_counts(self, pool, working, broken): |
| """Check that counts for a given pool match expectations. |
| |
| Checks that `get_working()` and `get_broken()` return the |
| given expected values for the given pool. Also check that |
| `get_total()` is the sum of working and broken devices. |
| |
| @param pool The pool to be checked. |
| @param working The expected total of working devices. |
| @param broken The expected total of broken devices. |
| |
| """ |
| self.assertEqual(self._board_counts.get_working(pool), |
| working) |
| self.assertEqual(self._board_counts.get_broken(pool), |
| broken) |
| self.assertEqual(self._board_counts.get_total(pool), |
| working + broken) |
| |
| |
| def test_empty(self): |
| """Test counts when there are no DUTs recorded.""" |
| self._check_all_counts(0, 0) |
| for pool in lab_inventory.MANAGED_POOLS: |
| self._check_pool_counts(pool, 0, 0) |
| |
| |
| def test_all_working_then_broken(self): |
| """Test counts after adding a working and then a broken DUT. |
| |
| For each pool, add first a working, then a broken DUT. After |
| each DUT is added, check counts to confirm the correct values. |
| |
| """ |
| working = 0 |
| broken = 0 |
| for pool in lab_inventory.MANAGED_POOLS: |
| self._add_host(pool, _WORKING) |
| working += 1 |
| self._check_pool_counts(pool, 1, 0) |
| self._check_all_counts(working, broken) |
| self._add_host(pool, _BROKEN) |
| broken += 1 |
| self._check_pool_counts(pool, 1, 1) |
| self._check_all_counts(working, broken) |
| |
| |
| def test_all_broken_then_working(self): |
| """Test counts after adding a broken and then a working DUT. |
| |
| For each pool, add first a broken, then a working DUT. After |
| each DUT is added, check counts to confirm the correct values. |
| |
| """ |
| working = 0 |
| broken = 0 |
| for pool in lab_inventory.MANAGED_POOLS: |
| self._add_host(pool, _BROKEN) |
| broken += 1 |
| self._check_pool_counts(pool, 0, 1) |
| self._check_all_counts(working, broken) |
| self._add_host(pool, _WORKING) |
| working += 1 |
| self._check_pool_counts(pool, 1, 1) |
| self._check_all_counts(working, broken) |
| |
| |
| class LocationSortTests(unittest.TestCase): |
| """Unit tests for `_sort_by_location()`.""" |
| |
| def setUp(self): |
| super(LocationSortTests, self).setUp() |
| |
| |
| def _check_sorting(self, *locations): |
| """Test sorting a given list of locations. |
| |
| The input is an already ordered list of lists of tuples with |
| row, rack, and host numbers. The test converts the tuples |
| to hostnames, preserving the original ordering. Then it |
| flattens and scrambles the input, runs it through |
| `_sort_by_location()`, and asserts that the result matches |
| the original. |
| |
| """ |
| lab = 0 |
| expected = [] |
| for tuples in locations: |
| lab += 1 |
| expected.append( |
| [_FakeHostLocation((lab,) + t) for t in tuples]) |
| scrambled = [e for e in itertools.chain(*expected)] |
| scrambled = [e for e in reversed(scrambled)] |
| actual = lab_inventory._sort_by_location(scrambled) |
| # The ordering of the labs in the output isn't guaranteed, |
| # so we can't compare `expected` and `actual` directly. |
| # Instead, we create a dictionary keyed on the first host in |
| # each lab, and compare the dictionaries. |
| self.assertEqual({l[0]: l for l in expected}, |
| {l[0]: l for l in actual}) |
| |
| |
| def test_separate_labs(self): |
| """Test that sorting distinguishes labs.""" |
| self._check_sorting([(1, 1, 1)], [(1, 1, 1)], [(1, 1, 1)]) |
| |
| |
| def test_separate_rows(self): |
| """Test for proper sorting when only rows are different.""" |
| self._check_sorting([(1, 1, 1), (9, 1, 1), (10, 1, 1)]) |
| |
| |
| def test_separate_racks(self): |
| """Test for proper sorting when only racks are different.""" |
| self._check_sorting([(1, 1, 1), (1, 9, 1), (1, 10, 1)]) |
| |
| |
| def test_separate_hosts(self): |
| """Test for proper sorting when only hosts are different.""" |
| self._check_sorting([(1, 1, 1), (1, 1, 9), (1, 1, 10)]) |
| |
| |
| def test_diagonal(self): |
| """Test for proper sorting when all parts are different.""" |
| self._check_sorting([(1, 1, 2), (1, 2, 1), (2, 1, 1)]) |
| |
| |
| class InventoryScoringTests(unittest.TestCase): |
| """Unit tests for `_score_repair_set()`.""" |
| |
| def setUp(self): |
| super(InventoryScoringTests, self).setUp() |
| |
| |
| def _make_buffer_counts(self, *counts): |
| """Create a dictionary suitable as `buffer_counts`. |
| |
| @param counts List of tuples with board count data. |
| |
| """ |
| self._buffer_counts = dict(counts) |
| |
| |
| def _make_history_list(self, repair_counts): |
| """Create a list suitable as `repair_list`. |
| |
| @param repair_counts List of (board, count) tuples. |
| |
| """ |
| pool = lab_inventory.SPARE_POOL |
| histories = [] |
| for board, count in repair_counts: |
| for i in range(0, count): |
| histories.append( |
| _FakeHostHistory(board, pool, _BROKEN)) |
| return histories |
| |
| |
| def _check_better(self, repair_a, repair_b): |
| """Test that repair set A scores better than B. |
| |
| Contruct repair sets from `repair_a` and `repair_b`, |
| and score both of them using the pre-existing |
| `self._buffer_counts`. Assert that the score for A is |
| better than the score for B. |
| |
| @param repair_a Input data for repair set A |
| @param repair_b Input data for repair set B |
| |
| """ |
| score_a = lab_inventory._score_repair_set( |
| self._buffer_counts, |
| self._make_history_list(repair_a)) |
| score_b = lab_inventory._score_repair_set( |
| self._buffer_counts, |
| self._make_history_list(repair_b)) |
| self.assertGreater(score_a, score_b) |
| |
| |
| def _check_equal(self, repair_a, repair_b): |
| """Test that repair set A scores the same as B. |
| |
| Contruct repair sets from `repair_a` and `repair_b`, |
| and score both of them using the pre-existing |
| `self._buffer_counts`. Assert that the score for A is |
| equal to the score for B. |
| |
| @param repair_a Input data for repair set A |
| @param repair_b Input data for repair set B |
| |
| """ |
| score_a = lab_inventory._score_repair_set( |
| self._buffer_counts, |
| self._make_history_list(repair_a)) |
| score_b = lab_inventory._score_repair_set( |
| self._buffer_counts, |
| self._make_history_list(repair_b)) |
| self.assertEqual(score_a, score_b) |
| |
| |
| def test_improve_worst_board(self): |
| """Test that improving the worst board improves scoring. |
| |
| Construct a buffer counts dictionary with all boards having |
| different counts. Assert that it is both necessary and |
| sufficient to improve the count of the worst board in order |
| to improve the score. |
| |
| """ |
| self._make_buffer_counts(('lion', 0), |
| ('tiger', 1), |
| ('bear', 2)) |
| self._check_better([('lion', 1)], [('tiger', 1)]) |
| self._check_better([('lion', 1)], [('bear', 1)]) |
| self._check_better([('lion', 1)], [('tiger', 2)]) |
| self._check_better([('lion', 1)], [('bear', 2)]) |
| self._check_equal([('tiger', 1)], [('bear', 1)]) |
| |
| |
| def test_improve_worst_case_count(self): |
| """Test that improving the number of worst cases improves the score. |
| |
| Construct a buffer counts dictionary with all boards having |
| the same counts. Assert that improving two boards is better |
| than improving one. Assert that improving any one board is |
| as good as any other. |
| |
| """ |
| self._make_buffer_counts(('lion', 0), |
| ('tiger', 0), |
| ('bear', 0)) |
| self._check_better([('lion', 1), ('tiger', 1)], [('bear', 2)]) |
| self._check_equal([('lion', 2)], [('tiger', 1)]) |
| self._check_equal([('tiger', 1)], [('bear', 1)]) |
| |
| |
| class _InventoryTests(unittest.TestCase): |
| """Parent class for tests relating to full Lab inventory. |
| |
| This class provides a `create_inventory()` method that allows |
| construction of a complete `_LabInventory` object from a |
| simplified input representation. The input representation |
| is a dictionary mapping board names to tuples of this form: |
| `((critgood, critbad), (sparegood, sparebad))` |
| where: |
| `critgood` is a number of working DUTs in one critical pool. |
| `critbad` is a number of broken DUTs in one critical pool. |
| `sparegood` is a number of working DUTs in one critical pool. |
| `sparebad` is a number of broken DUTs in one critical pool. |
| |
| A single 'critical pool' is arbitrarily chosen for purposes of |
| testing; there's no coverage for testing arbitrary combinations |
| in more than one critical pool. |
| |
| """ |
| |
| _CRITICAL_POOL = lab_inventory.CRITICAL_POOLS[0] |
| _SPARE_POOL = lab_inventory.SPARE_POOL |
| |
| def setUp(self): |
| super(_InventoryTests, self).setUp() |
| self.num_duts = 0 |
| self.inventory = None |
| |
| |
| def create_inventory(self, data): |
| """Initialize a `_LabInventory` instance for testing. |
| |
| @param data Representation of Lab inventory data, as |
| described above. |
| |
| """ |
| histories = [] |
| self.num_duts = 0 |
| status_choices = (_WORKING, _BROKEN, _UNUSED) |
| pools = (self._CRITICAL_POOL, self._SPARE_POOL) |
| for board, counts in data.items(): |
| for i in range(0, len(pools)): |
| for j in range(0, len(status_choices)): |
| for x in range(0, counts[i][j]): |
| history = _FakeHostHistory(board, |
| pools[i], |
| status_choices[j]) |
| histories.append(history) |
| if board is not None: |
| self.num_duts += 1 |
| self.inventory = lab_inventory._LabInventory(histories) |
| |
| |
| class LabInventoryTests(_InventoryTests): |
| """Tests for the basic functions of `_LabInventory`. |
| |
| Contains basic coverage to show that after an inventory is |
| created and DUTs with known status are added, the inventory |
| counts match the counts of the added DUTs. |
| |
| Test inventory objects are created using the `create_inventory()` |
| method from the parent class. |
| |
| """ |
| |
| # _BOARD_LIST - A list of sample board names for use in testing. |
| |
| _BOARD_LIST = [ |
| 'lion', |
| 'tiger', |
| 'bear', |
| 'aardvark', |
| 'platypus', |
| 'echidna', |
| 'elephant', |
| 'giraffe', |
| ] |
| |
| |
| def _check_inventory(self, data): |
| """Create a test inventory, and confirm that it's correct. |
| |
| Tests these assertions: |
| * The counts of working and broken devices for each |
| board match the numbers from `data`. |
| * That the set of returned boards in the inventory matches |
| the set from `data`. |
| * That the total number of DUTs matches the number from |
| `data`. |
| * That the total number of boards matches the number from |
| `data`. |
| |
| @param data Inventory data as for `self.create_inventory()`. |
| |
| """ |
| working_total = 0 |
| broken_total = 0 |
| idle_total = 0 |
| managed_boards = set() |
| for b in self.inventory: |
| c = self.inventory[b] |
| calculated_counts = ( |
| (c.get_working(self._CRITICAL_POOL), |
| c.get_broken(self._CRITICAL_POOL), |
| c.get_idle(self._CRITICAL_POOL)), |
| (c.get_working(self._SPARE_POOL), |
| c.get_broken(self._SPARE_POOL), |
| c.get_idle(self._SPARE_POOL))) |
| self.assertEqual(data[b], calculated_counts) |
| nworking = data[b][0][0] + data[b][1][0] |
| nbroken = data[b][0][1] + data[b][1][1] |
| nidle = data[b][0][2] + data[b][1][2] |
| self.assertEqual(nworking, len(c.get_working_list())) |
| self.assertEqual(nbroken, len(c.get_broken_list())) |
| self.assertEqual(nidle, len(c.get_idle_list())) |
| working_total += nworking |
| broken_total += nbroken |
| idle_total += nidle |
| ncritical = data[b][0][0] + data[b][0][1] + data[b][0][2] |
| nspare = data[b][1][0] + data[b][1][1] + data[b][1][2] |
| if ncritical != 0 and nspare != 0: |
| managed_boards.add(b) |
| self.assertEqual(self.inventory.get_managed_boards(), |
| managed_boards) |
| board_list = self.inventory.keys() |
| self.assertEqual(set(board_list), set(data.keys())) |
| self.assertEqual(self.inventory.get_num_duts(), |
| self.num_duts) |
| self.assertEqual(self.inventory.get_num_boards(), |
| len(data)) |
| |
| |
| def test_empty(self): |
| """Test counts when there are no DUTs recorded.""" |
| self.create_inventory({}) |
| self._check_inventory({}) |
| |
| |
| def test_missing_board(self): |
| """Test handling when the board is `None`.""" |
| self.create_inventory({None: ((1, 1, 1), (1, 1, 1))}) |
| self._check_inventory({}) |
| |
| |
| def test_board_counts(self): |
| """Test counts for various numbers of boards.""" |
| for nboards in [1, 2, len(self._BOARD_LIST)]: |
| counts = ((1, 1, 1), (1, 1, 1)) |
| slice = self._BOARD_LIST[0 : nboards] |
| inventory_data = { |
| board: counts for board in slice |
| } |
| self.create_inventory(inventory_data) |
| self._check_inventory(inventory_data) |
| |
| |
| def test_single_dut_counts(self): |
| """Test counts when there is a single DUT per board.""" |
| testcounts = [ |
| ((1, 0, 0), (0, 0, 0)), |
| ((0, 1, 0), (0, 0, 0)), |
| ((0, 0, 0), (1, 0, 0)), |
| ((0, 0, 0), (0, 1, 0)), |
| ((0, 0, 1), (0, 0, 0)), |
| ((0, 0, 0), (0, 0, 1)), |
| ] |
| for counts in testcounts: |
| inventory_data = { self._BOARD_LIST[0]: counts } |
| self.create_inventory(inventory_data) |
| self._check_inventory(inventory_data) |
| |
| |
| # _BOARD_MESSAGE_TEMPLATE - |
| # This is a sample of the output text produced by |
| # _generate_board_inventory_message(). This string is parsed by the |
| # tests below to construct a sample inventory that should produce |
| # the output, and then the output is generated and checked against |
| # this original sample. |
| # |
| # Constructing inventories from parsed sample text serves two |
| # related purposes: |
| # - It provides a way to see what the output should look like |
| # without having to run the script. |
| # - It helps make sure that a human being will actually look at |
| # the output to see that it's basically readable. |
| # This should also help prevent test bugs caused by writing tests |
| # that simply parrot the original output generation code. |
| |
| _BOARD_MESSAGE_TEMPLATE = ''' |
| Board Avail Bad Idle Good Spare Total |
| lion -1 13 2 11 12 26 |
| tiger -1 5 2 9 4 16 |
| bear 0 5 2 10 5 17 |
| platypus 4 2 2 20 6 24 |
| aardvark 7 2 2 6 9 10 |
| ''' |
| |
| |
| class BoardInventoryTests(_InventoryTests): |
| """Tests for `_generate_board_inventory_message()`. |
| |
| The tests create various test inventories designed to match the |
| counts in `_BOARD_MESSAGE_TEMPLATE`, and asserts that the |
| generated message text matches the original message text. |
| |
| Message text is represented as a list of strings, split on the |
| `'\n'` separator. |
| |
| """ |
| |
| def setUp(self): |
| super(BoardInventoryTests, self).setUp() |
| # The template string has leading and trailing '\n' that |
| # won't be in the generated output; we strip them out here. |
| message_lines = _BOARD_MESSAGE_TEMPLATE.split('\n') |
| self._header = message_lines[1] |
| self._board_lines = message_lines[2:-1] |
| self._board_data = [] |
| for l in self._board_lines: |
| items = l.split() |
| board = items[0] |
| bad = int(items[2]) |
| idle = int(items[3]) |
| good = int(items[4]) |
| spare = int(items[5]) |
| self._board_data.append((board, (good, bad, idle, spare))) |
| |
| |
| def _make_minimum_spares(self, counts): |
| """Create a counts tuple with as few spare DUTs as possible.""" |
| good, bad, idle, spares = counts |
| if spares > bad + idle: |
| return ((good + bad +idle - spares, 0, 0), |
| (spares - bad - idle, bad, idle)) |
| elif spares < bad: |
| return ((good, bad - spares, idle), (0, spares, 0)) |
| else: |
| return ((good, 0, idle + bad - spares), (0, bad, spares - bad)) |
| |
| |
| def _make_maximum_spares(self, counts): |
| """Create a counts tuple with as many spare DUTs as possible.""" |
| good, bad, idle, spares = counts |
| if good > spares: |
| return ((good - spares, bad, idle), (spares, 0, 0)) |
| elif good + bad > spares: |
| return ((0, good + bad - spares, idle), |
| (good, spares - good, 0)) |
| else: |
| return ((0, 0, good + bad + idle - spares), |
| (good, bad, spares - good - bad)) |
| |
| |
| def _check_board_inventory(self, data): |
| """Test that a test inventory creates the correct message. |
| |
| Create a test inventory from `data` using |
| `self.create_inventory()`. Then generate the board inventory |
| output, and test that the output matches |
| `_BOARD_MESSAGE_TEMPLATE`. |
| |
| The caller is required to produce data that matches the |
| values in `_BOARD_MESSAGE_TEMPLATE`. |
| |
| @param data Inventory data as for `self.create_inventory()`. |
| |
| """ |
| self.create_inventory(data) |
| message = lab_inventory._generate_board_inventory_message( |
| self.inventory).split('\n') |
| self.assertIn(self._header, message) |
| body = message[message.index(self._header) + 1 :] |
| self.assertEqual(body, self._board_lines) |
| |
| |
| def test_minimum_spares(self): |
| """Test message generation when the spares pool is low.""" |
| data = { |
| board: self._make_minimum_spares(counts) |
| for board, counts in self._board_data |
| } |
| self._check_board_inventory(data) |
| |
| |
| def test_maximum_spares(self): |
| """Test message generation when the critical pool is low.""" |
| data = { |
| board: self._make_maximum_spares(counts) |
| for board, counts in self._board_data |
| } |
| self._check_board_inventory(data) |
| |
| |
| def test_ignore_no_spares(self): |
| """Test that messages ignore boards with no spare pool.""" |
| data = { |
| board: self._make_maximum_spares(counts) |
| for board, counts in self._board_data |
| } |
| data['elephant'] = ((5, 4, 0), (0, 0, 0)) |
| self._check_board_inventory(data) |
| |
| |
| def test_ignore_no_critical(self): |
| """Test that messages ignore boards with no critical pools.""" |
| data = { |
| board: self._make_maximum_spares(counts) |
| for board, counts in self._board_data |
| } |
| data['elephant'] = ((0, 0, 0), (1, 5, 1)) |
| self._check_board_inventory(data) |
| |
| |
| def test_ignore_no_bad(self): |
| """Test that messages ignore boards with no bad DUTs.""" |
| data = { |
| board: self._make_maximum_spares(counts) |
| for board, counts in self._board_data |
| } |
| data['elephant'] = ((5, 0, 1), (5, 0, 1)) |
| self._check_board_inventory(data) |
| |
| |
| class _PoolInventoryTestBase(unittest.TestCase): |
| """Parent class for tests relating to generating pool inventory messages. |
| |
| Func `setUp` in the class parses a given |message_template| to obtain |
| header and body. |
| """ |
| def _read_template(self, message_template): |
| """Read message template for PoolInventoryTest and IdleInventoryTest. |
| |
| @param message_template: the input template to be parsed into: header |
| and content (report_lines). |
| |
| """ |
| message_lines = message_template.split('\n') |
| self._header = message_lines[1] |
| self._report_lines = message_lines[2:-1] |
| |
| |
| def _check_report_no_info(self, text): |
| """Test a message body containing no reported info. |
| |
| The input `text` was created from a query to an inventory, which has |
| no objects meet the query and leads to an `empty` return. Assert that |
| the text consists of a single line starting with '(' and ending with ')'. |
| |
| @param text: Message body text to be tested. |
| |
| """ |
| self.assertTrue(len(text) == 1 and |
| text[0][0] == '(' and |
| text[0][-1] == ')') |
| |
| |
| def _check_report(self, text): |
| """Test a message against the passed |expected_content|. |
| |
| @param text: Message body text to be tested. |
| @param expected_content: The ground-truth content to be compared with. |
| |
| """ |
| self.assertEqual(text, self._report_lines) |
| |
| |
| # _POOL_MESSAGE_TEMPLATE - |
| # This is a sample of the output text produced by |
| # _generate_pool_inventory_message(). This string is parsed by the |
| # tests below to construct a sample inventory that should produce |
| # the output, and then the output is generated and checked against |
| # this original sample. |
| # |
| # See the comments on _BOARD_MESSAGE_TEMPLATE above for the |
| # rationale on using sample text in this way. |
| |
| _POOL_MESSAGE_TEMPLATE = ''' |
| Board Bad Idle Good Total |
| lion 5 2 6 13 |
| tiger 4 1 5 10 |
| bear 3 0 7 10 |
| aardvark 2 0 0 2 |
| platypus 1 1 1 3 |
| ''' |
| |
| _POOL_ADMIN_URL = 'http://go/cros-manage-duts' |
| |
| |
| class PoolInventoryTests(_PoolInventoryTestBase): |
| """Tests for `_generate_pool_inventory_message()`. |
| |
| The tests create various test inventories designed to match the |
| counts in `_POOL_MESSAGE_TEMPLATE`, and assert that the |
| generated message text matches the format established in the |
| original message text. |
| |
| The output message text is parsed against the following grammar: |
| <message> -> <intro> <pool> { "blank line" <pool> } |
| <intro> -> |
| Instructions to depty mentioning the admin page URL |
| A blank line |
| <pool> -> |
| <description> |
| <header line> |
| <message body> |
| <description> -> |
| Any number of lines describing one pool |
| <header line> -> |
| The header line from `_POOL_MESSAGE_TEMPLATE` |
| <message body> -> |
| Any number of non-blank lines |
| |
| After parsing messages into the parts described above, various |
| assertions are tested against the parsed output, including |
| that the message body matches the body from |
| `_POOL_MESSAGE_TEMPLATE`. |
| |
| Parse message text is represented as a list of strings, split on |
| the `'\n'` separator. |
| |
| """ |
| def setUp(self): |
| super(PoolInventoryTests, self)._read_template(_POOL_MESSAGE_TEMPLATE) |
| self._board_data = [] |
| for l in self._report_lines: |
| items = l.split() |
| board = items[0] |
| bad = int(items[1]) |
| idle = int(items[2]) |
| good = int(items[3]) |
| self._board_data.append((board, (good, bad, idle))) |
| |
| |
| def _create_histories(self, pools, board_data): |
| """Return a list suitable to create a `_LabInventory` object. |
| |
| Creates a list of `_FakeHostHistory` objects that can be |
| used to create a lab inventory. `pools` is a list of strings |
| naming pools, and `board_data` is a list of tuples of the |
| form |
| `(board, (goodcount, badcount))` |
| where |
| `board` is a board name. |
| `goodcount` is the number of working DUTs in the pool. |
| `badcount` is the number of broken DUTs in the pool. |
| |
| @param pools List of pools for which to create |
| histories. |
| @param board_data List of tuples containing boards and DUT |
| counts. |
| @return A list of `_FakeHostHistory` objects that can be |
| used to create a `_LabInventory` object. |
| |
| """ |
| histories = [] |
| status_choices = (_WORKING, _BROKEN, _UNUSED) |
| for pool in pools: |
| for board, counts in board_data: |
| for status, count in zip(status_choices, counts): |
| for x in range(0, count): |
| histories.append( |
| _FakeHostHistory(board, pool, status)) |
| return histories |
| |
| |
| def _parse_pool_summaries(self, histories): |
| """Parse message output according to the grammar above. |
| |
| Create a lab inventory from the given `histories`, and |
| generate the pool inventory message. Then parse the message |
| and return a dictionary mapping each pool to the message |
| body parsed after that pool. |
| |
| Tests the following assertions: |
| * Each <description> contains a mention of exactly one |
| pool in the `CRITICAL_POOLS` list. |
| * Each pool is mentioned in exactly one <description>. |
| Note that the grammar requires the header to appear once |
| for each pool, so the parsing implicitly asserts that the |
| output contains the header. |
| |
| @param histories Input used to create the test |
| `_LabInventory` object. |
| @return A dictionary mapping board names to the output |
| (a list of lines) for the board. |
| |
| """ |
| inventory = lab_inventory._LabInventory(histories) |
| message = lab_inventory._generate_pool_inventory_message( |
| inventory).split('\n') |
| poolset = set(lab_inventory.CRITICAL_POOLS) |
| seen_url = False |
| seen_intro = False |
| description = '' |
| board_text = {} |
| current_pool = None |
| for line in message: |
| if not seen_url: |
| if _POOL_ADMIN_URL in line: |
| seen_url = True |
| elif not seen_intro: |
| if not line: |
| seen_intro = True |
| elif current_pool is None: |
| if line == self._header: |
| pools_mentioned = [p for p in poolset |
| if p in description] |
| self.assertEqual(len(pools_mentioned), 1) |
| current_pool = pools_mentioned[0] |
| description = '' |
| board_text[current_pool] = [] |
| poolset.remove(current_pool) |
| else: |
| description += line |
| else: |
| if line: |
| board_text[current_pool].append(line) |
| else: |
| current_pool = None |
| self.assertEqual(len(poolset), 0) |
| return board_text |
| |
| |
| def test_no_shortages(self): |
| """Test correct output when no pools have shortages.""" |
| board_text = self._parse_pool_summaries([]) |
| for text in board_text.values(): |
| self._check_report_no_info(text) |
| |
| |
| def test_one_pool_shortage(self): |
| """Test correct output when exactly one pool has a shortage.""" |
| for pool in lab_inventory.CRITICAL_POOLS: |
| histories = self._create_histories((pool,), |
| self._board_data) |
| board_text = self._parse_pool_summaries(histories) |
| for checkpool in lab_inventory.CRITICAL_POOLS: |
| text = board_text[checkpool] |
| if checkpool == pool: |
| self._check_report(text) |
| else: |
| self._check_report_no_info(text) |
| |
| |
| def test_all_pool_shortages(self): |
| """Test correct output when all pools have a shortage.""" |
| histories = [] |
| for pool in lab_inventory.CRITICAL_POOLS: |
| histories.extend( |
| self._create_histories((pool,), |
| self._board_data)) |
| board_text = self._parse_pool_summaries(histories) |
| for pool in lab_inventory.CRITICAL_POOLS: |
| self._check_report(board_text[pool]) |
| |
| |
| def test_full_board_ignored(self): |
| """Test that boards at full strength are not reported.""" |
| pool = lab_inventory.CRITICAL_POOLS[0] |
| full_board = [('echidna', (5, 0, 0))] |
| histories = self._create_histories((pool,), |
| full_board) |
| text = self._parse_pool_summaries(histories)[pool] |
| self._check_report_no_info(text) |
| board_data = self._board_data + full_board |
| histories = self._create_histories((pool,), board_data) |
| text = self._parse_pool_summaries(histories)[pool] |
| self._check_report(text) |
| |
| |
| def test_spare_pool_ignored(self): |
| """Test that reporting ignores the spare pool inventory.""" |
| spare_pool = lab_inventory.SPARE_POOL |
| spare_data = self._board_data + [('echidna', (0, 5, 0))] |
| histories = self._create_histories((spare_pool,), |
| spare_data) |
| board_text = self._parse_pool_summaries(histories) |
| for pool in lab_inventory.CRITICAL_POOLS: |
| self._check_report_no_info(board_text[pool]) |
| |
| |
| _IDLE_MESSAGE_TEMPLATE = ''' |
| Hostname Board Pool |
| chromeos4-row12-rack4-host7 tiger bvt |
| chromeos1-row3-rack1-host2 lion bvt |
| chromeos3-row2-rack2-host5 lion cq |
| chromeos2-row7-rack3-host11 platypus suites |
| ''' |
| |
| |
| class IdleInventoryTests(_PoolInventoryTestBase): |
| """Tests for `_generate_idle_inventory_message()`. |
| |
| The tests create idle duts that match the counts and pool in |
| `_IDLE_MESSAGE_TEMPLATE`. In test, it asserts that the generated |
| idle message text matches the format established in |
| `_IDLE_MESSAGE_TEMPLATE`. |
| |
| Parse message text is represented as a list of strings, split on |
| the `'\n'` separator. |
| |
| """ |
| |
| def setUp(self): |
| super(IdleInventoryTests, self)._read_template(_IDLE_MESSAGE_TEMPLATE) |
| self._host_data = [] |
| for h in self._report_lines: |
| items = h.split() |
| hostname = items[0] |
| board = items[1] |
| pool = items[2] |
| self._host_data.append((hostname, board, pool)) |
| self._histories = [] |
| self._histories.append(_FakeHostHistory('echidna', 'bvt', _BROKEN)) |
| self._histories.append(_FakeHostHistory('lion', 'bvt', _WORKING)) |
| |
| |
| def _add_idles(self): |
| """Add idle duts from `_IDLE_MESSAGE_TEMPLATE`.""" |
| idle_histories = [_FakeHostHistory( |
| board, pool, _UNUSED, hostname=hostname) |
| for hostname, board, pool in self._host_data] |
| self._histories.extend(idle_histories) |
| |
| |
| def _check_header(self, text): |
| """Check whether header in the template `_IDLE_MESSAGE_TEMPLATE` is in |
| passed text.""" |
| self.assertIn(self._header, text) |
| |
| |
| def _get_idle_message(self, histories): |
| """Generate idle inventory and obtain its message. |
| |
| @param histories: Used to create lab inventory. |
| |
| @return the generated idle message. |
| |
| """ |
| inventory = lab_inventory._LabInventory(histories) |
| message = lab_inventory._generate_idle_inventory_message( |
| inventory).split('\n') |
| return message |
| |
| |
| def test_check_idle_inventory(self): |
| """Test that reporting all the idle DUTs for every pool, sorted by |
| lab_inventory.MANAGED_POOLS. |
| """ |
| self._add_idles() |
| |
| message = self._get_idle_message(self._histories) |
| self._check_header(message) |
| self._check_report(message[message.index(self._header) + 1 :]) |
| |
| |
| def test_no_idle_inventory(self): |
| """Test that reporting no idle DUTs.""" |
| message = self._get_idle_message(self._histories) |
| self._check_header(message) |
| self._check_report_no_info( |
| message[message.index(self._header) + 1 :]) |
| |
| |
| class CommandParsingTests(unittest.TestCase): |
| """Tests for command line argument parsing in `_parse_command()`.""" |
| |
| _NULL_NOTIFY = ['--board-notify=', '--pool-notify='] |
| |
| def setUp(self): |
| dirpath = '/usr/local/fubar' |
| self._command_path = os.path.join(dirpath, |
| 'site_utils', |
| 'arglebargle') |
| self._logdir = os.path.join(dirpath, lab_inventory._LOGDIR) |
| |
| |
| def _parse_arguments(self, argv, notify=_NULL_NOTIFY): |
| full_argv = [self._command_path] + argv + notify |
| return lab_inventory._parse_command(full_argv) |
| |
| |
| def _check_non_notify_defaults(self, notify_option): |
| arguments = self._parse_arguments([], notify=[notify_option]) |
| self.assertEqual(arguments.duration, |
| lab_inventory._DEFAULT_DURATION) |
| self.assertFalse(arguments.debug) |
| self.assertEqual(arguments.logdir, self._logdir) |
| self.assertEqual(arguments.boardnames, []) |
| return arguments |
| |
| |
| def test_empty_arguments(self): |
| """Test that an empty argument list is an error.""" |
| arguments = self._parse_arguments([], notify=[]) |
| self.assertIsNone(arguments) |
| |
| |
| def test_argument_defaults(self): |
| """Test that option defaults match expectations.""" |
| arguments = self._check_non_notify_defaults(self._NULL_NOTIFY[0]) |
| self.assertEqual(arguments.board_notify, ['']) |
| self.assertEqual(arguments.pool_notify, []) |
| arguments = self._check_non_notify_defaults(self._NULL_NOTIFY[1]) |
| self.assertEqual(arguments.board_notify, []) |
| self.assertEqual(arguments.pool_notify, ['']) |
| |
| |
| def test_board_arguments(self): |
| """Test that non-option arguments are returned in `boardnames`.""" |
| boardlist = ['aardvark', 'echidna'] |
| arguments = self._parse_arguments(boardlist) |
| self.assertEqual(arguments.boardnames, boardlist) |
| |
| |
| def test_debug_option(self): |
| """Test parsing of the `--debug` option.""" |
| arguments = self._parse_arguments(['--debug']) |
| self.assertTrue(arguments.debug) |
| |
| |
| def test_duration(self): |
| """Test parsing of the `--duration` option.""" |
| arguments = self._parse_arguments(['--duration', '1']) |
| self.assertEqual(arguments.duration, 1) |
| arguments = self._parse_arguments(['--duration', '11']) |
| self.assertEqual(arguments.duration, 11) |
| arguments = self._parse_arguments(['-d', '1']) |
| self.assertEqual(arguments.duration, 1) |
| arguments = self._parse_arguments(['-d', '11']) |
| self.assertEqual(arguments.duration, 11) |
| |
| |
| def _check_email_option(self, option, getlist): |
| """Test parsing of e-mail address options. |
| |
| This is a helper function to test the `--board-notify` and |
| `--pool-notify` options. It tests the following cases: |
| * `--option a1` gives the list [a1] |
| * `--option ' a1 '` gives the list [a1] |
| * `--option a1 --option a2` gives the list [a1, a2] |
| * `--option a1,a2` gives the list [a1, a2] |
| * `--option 'a1, a2'` gives the list [a1, a2] |
| |
| @param option The option to be tested. |
| @param getlist A function to return the option's value from |
| parsed command line arguments. |
| |
| """ |
| a1 = '[email protected]' |
| a2 = '[email protected]' |
| arguments = self._parse_arguments([option, a1], notify=[]) |
| self.assertEqual(getlist(arguments), [a1]) |
| arguments = self._parse_arguments([option, ' ' + a1 + ' '], |
| notify=[]) |
| self.assertEqual(getlist(arguments), [a1]) |
| arguments = self._parse_arguments([option, a1, option, a2], |
| notify=[]) |
| self.assertEqual(getlist(arguments), [a1, a2]) |
| arguments = self._parse_arguments( |
| [option, ','.join([a1, a2])], notify=[]) |
| self.assertEqual(getlist(arguments), [a1, a2]) |
| arguments = self._parse_arguments( |
| [option, ', '.join([a1, a2])], notify=[]) |
| self.assertEqual(getlist(arguments), [a1, a2]) |
| |
| |
| def test_board_notify(self): |
| """Test parsing of the `--board-notify` option.""" |
| self._check_email_option('--board-notify', |
| lambda a: a.board_notify) |
| |
| |
| def test_pool_notify(self): |
| """Test parsing of the `--pool-notify` option.""" |
| self._check_email_option('--pool-notify', |
| lambda a: a.pool_notify) |
| |
| |
| def test_pool_logdir(self): |
| """Test parsing of the `--logdir` option.""" |
| logdir = '/usr/local/whatsis/logs' |
| arguments = self._parse_arguments(['--logdir', logdir]) |
| self.assertEqual(arguments.logdir, logdir) |
| |
| |
| if __name__ == '__main__': |
| # Some of the functions we test log messages. Prevent those |
| # messages from showing up in test output. |
| logging.getLogger().setLevel(logging.CRITICAL) |
| unittest.main() |
