Added test for SDL_Mix that includes looping audio.

The test demonstrates that looping produces gaps in the sound.

3 files changed, 13 insertions, 2 deletions

diff --git a/tests/runner.py b/tests/runner.py
index 5e101024..d6ac8a5d 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -12279,9 +12279,10 @@ elif 'browser' in str(sys.argv):
     def test_sdl_audio_mix(self):
       shutil.copyfile(path_from_root('tests', 'sounds', 'pluck.ogg'), os.path.join(self.get_dir(), 'sound.ogg'))
       shutil.copyfile(path_from_root('tests', 'sounds', 'the_entertainer.ogg'), os.path.join(self.get_dir(), 'music.ogg'))
+      shutil.copyfile(path_from_root('tests', 'sounds', 'noise.ogg'), os.path.join(self.get_dir(), 'noise.ogg'))
       open(os.path.join(self.get_dir(), 'sdl_audio_mix.c'), 'w').write(self.with_report_result(open(path_from_root('tests', 'sdl_audio_mix.c')).read()))
 
-      Popen([PYTHON, EMCC, '-O2', '--minify', '0', os.path.join(self.get_dir(), 'sdl_audio_mix.c'), '--preload-file', 'sound.ogg', '--preload-file', 'music.ogg', '-o', 'page.html']).communicate()
+      Popen([PYTHON, EMCC, '-O2', '--minify', '0', os.path.join(self.get_dir(), 'sdl_audio_mix.c'), '--preload-file', 'sound.ogg', '--preload-file', 'music.ogg', '--preload-file', 'noise.ogg', '-o', 'page.html']).communicate()
       self.run_browser('page.html', '', '/report_result?1')
 
     def test_sdl_audio_quickload(self):
diff --git a/tests/sdl_audio_mix.c b/tests/sdl_audio_mix.c
index f72f9c43..a1c0485d 100644
--- a/tests/sdl_audio_mix.c
+++ b/tests/sdl_audio_mix.c
@@ -5,9 +5,11 @@
 #include <emscripten.h>
 
 static Mix_Chunk *sound = NULL;
+static Mix_Chunk *noiseLoop = NULL;
 static Mix_Music *music = NULL;
 
 static int soundChannel = 0;
+static int noiseLoopChannel = 0;
 
 void one_iter();
 void one_iter() {
@@ -19,6 +21,12 @@ void one_iter() {
       soundChannel = Mix_PlayChannel(-1, sound, 0);
       printf("channel = %d", soundChannel);
       assert(soundChannel != -1 && soundChannel != 0);
+
+      noiseLoopChannel = Mix_PlayChannel(-1, noiseLoop, -1);
+      printf("noiseLoopChannel = %d", noiseLoopChannel);
+      assert(noiseLoopChannel != -1 && noiseLoopChannel != 0);
+      // set noiseLoopChannel to half volume
+      Mix_Volume(noiseLoopChannel,MIX_MAX_VOLUME/10);
       break;
     case 2:
       printf("channel %d is playing = %d", soundChannel, Mix_Playing(soundChannel));
@@ -70,9 +78,11 @@ int main(int argc, char **argv) {
 
   sound = Mix_LoadWAV("sound.ogg");
   assert(sound);
+  noiseLoop = Mix_LoadWAV("noise.ogg");
+  assert(noiseLoop);
+
   music = Mix_LoadMUS("music.ogg");
   assert(music);
-
   emscripten_set_main_loop(one_iter, 30, 0);
 
   // force a quit
diff --git a/tests/sounds/noise.ogg b/tests/sounds/noise.ogg
new file mode 100644
index 00000000..c53d49a7
--- /dev/null
+++ b/tests/sounds/noise.ogg