[testing] Speed up test_sdl_audio_beep_sleep. (#25253)

This test takes over 60 seconds to run. There's really no point for it
using such long beeps and delays when running in an automated test.
After the changes it finishes in ~4 seconds.

Author: brendandahl

test/browser/test_sdl_audio_beep_sleep.cpp

@@ -22,7 +22,17 @@
 #undef main
 #endif
 
+// Set this to true to if manually testing in browser to give longer delays
+// and beeps.
+// #define INTERACTIVE true
+
+#ifdef INTERACTIVE
 const int tone_duration = 1000;
+#define DELAY 1500
+#else
+#define DELAY 1
+const int tone_duration = 10;
+#endif
 
 struct BeepObject {
   double toneFrequency;
@@ -196,7 +206,11 @@ void nextTest(void *unused = 0) {
     return;
   }
 
+#ifdef INTERACTIVE
   emscripten_sleep(100);
+#else
+  emscripten_sleep(1);
+#endif
 
   printf("Playing back a beep for %d msecs at %d Hz tone with audio format %s, %d channels, and %d samples/sec.\n",
       tone_duration, (int)Hz, SdlAudioFormatToString(sdlAudioFormats[s]), channels[c], freqs[f]);
@@ -211,9 +225,9 @@ void update() {
     delete beep;
     beep = 0;
 #ifdef __EMSCRIPTEN__
-    emscripten_async_call(nextTest, 0, 1500);
+    emscripten_async_call(nextTest, 0, DELAY);
 #else
-    SDL_Delay(1500);
+    SDL_Delay(DELAY);
     nextTest();
 #endif
   }