1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <audio_utils/LogPlot.h>
18
19 #include <gtest/gtest.h>
20
21 #include <iostream>
22 #include <vector>
23
TEST(audio_utils_logplot,basic)24 TEST(audio_utils_logplot, basic) {
25 static constexpr float data[] = {-61.4, -61.7, -56.2, -54.5, -47.7, -51.1, -49.7, -47.2,
26 -47.8, -42.3, -38.9, -40.5, -39.4, -33.9, -26.3, -20.9};
27 std::vector<std::pair<float, bool>> vdata;
28 for (size_t i = 0; i < std::size(data); ++i) {
29 vdata.emplace_back(data[i], (i + 1) % 10 == 0);
30 }
31
32 const std::string graphstr = audio_utils_log_plot(vdata.begin(), vdata.end());
33
34 // Show on host log, or if one of the asserts fails.
35 std::cerr << graphstr << std::endl;
36
37 // Must have at least 3 rows.
38 const auto rows = count(graphstr.begin(), graphstr.end(), '\n');
39 ASSERT_GE(rows, 3);
40
41 // Approximate the number of cols (note top and bottom row are empty currently).
42 const auto cols = graphstr.size() / (rows - 2);
43 ASSERT_GE(cols, std::size(data) / 2); // Graph cols filled at least by half.
44 }
45