| # Copyright 2015 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Code coverage tests for the math_utils recipe module.""" |
| |
| import math |
| |
| DEPS = [ |
| 'math_utils', |
| 'test_utils', |
| ] |
| |
| def RunSteps(api): |
| assert(0 == api.math_utils.relative_change(0, 0)) |
| assert(0 == api.math_utils.relative_change(1, 1)) |
| |
| sample_a = list(range(1, 10)) |
| sample_b = list(range(11, 21)) |
| assert(99.9 == api.math_utils.confidence_score(sample_a, sample_b)) |
| assert(0 == api.math_utils.confidence_score([1],[1, 2])) |
| assert(0 == api.math_utils.confidence_score([1, 1],[1, 2])) |
| assert(99.9 == api.math_utils.confidence_score([1, 1, 1],[2, 2, 2])) |
| assert(0 == api.math_utils.confidence_score([1, 1, 1],[1, 1, 1])) |
| assert(0 == api.math_utils.confidence_score([],[], True)) |
| |
| assert(0 == api.math_utils.relative_change(1, 1)) |
| assert(math.isnan(api.math_utils.relative_change(0, 1))) |
| assert(1 == api.math_utils.relative_change(1, 2)) |
| |
| assert(0 == api.math_utils.variance([0])) |
| |
| assert(1.33 < api.math_utils.pooled_standard_error([sample_a, sample_b]) |
| < 1.34) |
| assert(0 == api.math_utils.pooled_standard_error([[0]])) |
| assert(0 == api.math_utils.standard_error([1])) |
| assert(0.64 < api.math_utils.standard_error([2, 3, 4, 5]) < 0.65) |
| |
| assert(110 == api.math_utils.mean([10, 20, 300])) |
| try: |
| api.math_utils.mean([]) |
| except ValueError: |
| pass |
| else: # pragma: no cover |
| raise AssertionError('`mean` doesn\'t raise ValueError for empty list.') |
| |
| def GenTests(api): |
| yield api.test('math_utils_test') |
