add test

sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/CMakeLists.txt

@@ -73,6 +73,14 @@ macro_test(
     LINKS_PRIVATE hyper-sonic-drivers-static
 )
 
+macro_test(
+    EXE TestSound
+    FILES "utils/TestSound.cpp"
+    LINKS_PRIVATE hyper-sonic-drivers-static
+    FIXTURES
+        "../fixtures/Wav_868kb.wav"
+)
+
 macro_test(
     EXE TestPCSpeaker
     FILES "hardware/TestPCSpeaker.cpp"

sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/utils/TestSound.cpp

@@ -0,0 +1,72 @@
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>
+#include <cstdint>
+#include <memory>
+#include <HyperSonicDrivers/utils/sound.hpp>
+#include <HyperSonicDrivers/audio/PCMSound.hpp>
+
+namespace HyperSonicDrivers::utils
+{
+    using audio::mixer::eChannelGroup;
+    using audio::PCMSound;
+
+    TEST(utils, makeMono0)
+    {
+        const uint32_t size = 100;
+        auto data = std::make_shared<int16_t[]>(size);
+
+        auto s1 = std::make_shared<PCMSound>(eChannelGroup::Plain, true, 44100, size, data);
+        auto s2 = makeMono(s1);
+
+        EXPECT_TRUE(s1->stereo);
+        EXPECT_FALSE(s2->stereo);
+        EXPECT_EQ(s1->group, s2->group);
+        EXPECT_EQ(s1->freq, s2->freq);
+        EXPECT_EQ(s1->dataSize, size);
+        EXPECT_EQ(s2->dataSize, size / 2);
+    }
+
+    TEST(utils, makeMono1)
+    {
+        const uint32_t size = 100;
+        auto data = std::make_shared<int16_t[]>(size);
+
+        auto s1 = std::make_shared<PCMSound>(eChannelGroup::Plain, false, 44100, size, data);
+        auto s2 = makeMono(s1);
+
+        ASSERT_EQ(s1, s2);
+    }
+
+    TEST(utils, makeStereo0)
+    {
+        const uint32_t size = 100;
+        auto data = std::make_shared<int16_t[]>(size);
+
+        auto s1 = std::make_shared<PCMSound>(eChannelGroup::Plain, false, 44100, size, data);
+        auto s2 = makeStereo(s1);
+
+        EXPECT_FALSE(s1->stereo);
+        EXPECT_TRUE(s2->stereo);
+        EXPECT_EQ(s1->group, s2->group);
+        EXPECT_EQ(s1->freq, s2->freq);
+        EXPECT_EQ(s1->dataSize, size);
+        EXPECT_EQ(s2->dataSize, size * 2);
+    }
+
+    TEST(utils, makeStereo1)
+    {
+        const uint32_t size = 100;
+        auto data = std::make_shared<int16_t[]>(size);
+
+        auto s1 = std::make_shared<PCMSound>(eChannelGroup::Plain, true, 44100, size, data);
+        auto s2 = makeStereo(s1);
+
+        ASSERT_EQ(s1, s2);
+    }
+}
+
+int main(int argc, char** argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}