diff options
Diffstat (limited to 'tests/audio')
| -rw-r--r-- | tests/audio/config.h | 18 | ||||
| -rw-r--r-- | tests/audio/test.mk | 16 | ||||
| -rw-r--r-- | tests/audio/test_audio.cpp | 118 |
3 files changed, 152 insertions, 0 deletions
diff --git a/tests/audio/config.h b/tests/audio/config.h new file mode 100644 index 0000000000..d0c4ddadbd --- /dev/null +++ b/tests/audio/config.h @@ -0,0 +1,18 @@ +// Copyright 2023 Google LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. + +#pragma once + +#include "test_common.h" diff --git a/tests/audio/test.mk b/tests/audio/test.mk new file mode 100644 index 0000000000..a2c71d9587 --- /dev/null +++ b/tests/audio/test.mk @@ -0,0 +1,16 @@ +# Copyright 2023 Google LLC +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +AUDIO_ENABLE = yes diff --git a/tests/audio/test_audio.cpp b/tests/audio/test_audio.cpp new file mode 100644 index 0000000000..ef34748b06 --- /dev/null +++ b/tests/audio/test_audio.cpp @@ -0,0 +1,118 @@ +// Copyright 2023 Google LLC +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program. If not, see <http://www.gnu.org/licenses/>. + +#include <cmath> +#include <random> + +#include "gtest/gtest.h" +#include "keyboard_report_util.hpp" +#include "test_common.hpp" + +namespace { + +class AudioTest : public TestFixture { + public: + uint16_t infer_tempo() { + return audio_ms_to_duration(1875) / 2; + } +}; + +TEST_F(AudioTest, OnOffToggle) { + audio_on(); + EXPECT_TRUE(audio_is_on()); + + audio_off(); + EXPECT_FALSE(audio_is_on()); + + audio_toggle(); + EXPECT_TRUE(audio_is_on()); + + audio_toggle(); + EXPECT_FALSE(audio_is_on()); +} + +TEST_F(AudioTest, ChangeTempo) { + for (int tempo = 50; tempo <= 250; tempo += 50) { + audio_set_tempo(tempo); + EXPECT_EQ(infer_tempo(), tempo); + } + + audio_set_tempo(10); + audio_increase_tempo(25); + EXPECT_EQ(infer_tempo(), 35); + + audio_decrease_tempo(4); + EXPECT_EQ(infer_tempo(), 31); + + audio_increase_tempo(250); + EXPECT_EQ(infer_tempo(), 255); + + audio_set_tempo(9); + EXPECT_EQ(infer_tempo(), 10); + + audio_decrease_tempo(100); + EXPECT_EQ(infer_tempo(), 10); +} + +TEST_F(AudioTest, BpmConversion) { + const int tol = 1; + + audio_set_tempo(120); + // At 120 bpm, there are 2 beats per second, and a whole note is 500 ms. + EXPECT_NEAR(audio_duration_to_ms(64 /* whole note */), 500, tol); + EXPECT_NEAR(audio_ms_to_duration(500), 64, tol); + EXPECT_EQ(audio_duration_to_ms(0), 0); + EXPECT_EQ(audio_ms_to_duration(0), 0); + + audio_set_tempo(10); + // At 10 bpm, UINT16_MAX ms corresponds to 699/64 beats and is the longest + // duration that can be converted without overflow. + EXPECT_NEAR(audio_ms_to_duration(UINT16_MAX), 699, tol); + EXPECT_NEAR(audio_duration_to_ms(699), 65531, tol); + + audio_set_tempo(255); + // At 255 bpm, UINT16_MAX ms corresponds to 17825/64 beats and is the longest + // duration that can be converted without overflow. + EXPECT_NEAR(audio_ms_to_duration(UINT16_MAX), 17825, tol); + EXPECT_NEAR(audio_duration_to_ms(17825), 65533, tol); + + std::mt19937 rng(0 /*seed*/); + std::uniform_int_distribution<int> dist_tempo(10, 255); + std::uniform_int_distribution<int> dist_ms(0, UINT16_MAX); + + // Test bpm <-> ms conversions for random tempos and durations. + for (int trial = 0; trial < 50; ++trial) { + const int tempo = dist_tempo(rng); + const int duration_ms = dist_ms(rng); + SCOPED_TRACE("tempo " + testing::PrintToString(tempo) + ", duration " + testing::PrintToString(duration_ms) + " ms"); + + audio_set_tempo(tempo); + int duration_bpm = std::round((64.0f / (60.0f * 1000.0f)) * duration_ms * tempo); + ASSERT_NEAR(audio_ms_to_duration(duration_ms), duration_bpm, tol); + + int roundtrip_ms = std::round((60.0f * 1000.0f / 64.0f) * duration_bpm / tempo); + // Because of round-off error, duration_ms and roundtrip_ms may differ by + // about (60 * 1000 / 64) / tempo. + int roundtrip_tol = tol * (60.0f * 1000.0f / 64.0f) / tempo; + ASSERT_NEAR(roundtrip_ms, duration_ms, roundtrip_tol); + + // Only test converting back to ms if the result would be in uint16_t range. + if (roundtrip_ms <= UINT16_MAX) { + ASSERT_NEAR(audio_duration_to_ms(duration_bpm), roundtrip_ms, tol); + } + } +} + +} // namespace |