add unit test for decibels slider

diff --git a/qcsrc/menu/xonotic/slider_decibels.c b/qcsrc/menu/xonotic/slider_decibels.c
index 6068c1c15bfde9cb9495cf3b8a74b2c2d47f3ec6..1e1f3eb75a6c194bce46dbc76139580511b3fb86 100644 (file)
--- a/qcsrc/menu/xonotic/slider_decibels.c
+++ b/qcsrc/menu/xonotic/slider_decibels.c
@@ -85,4 +85,19 @@ string XonoticDecibelsSlider_valueToText(entity me, float v)
                return sprintf(_("%s dB"), ftos_decimals(toDecibelOfSquare(fromDecibelOfSquare(v, me.valueMin), 0), me.valueDigits));
 }
 
+void _TEST_XonoticDecibelsSlider()
+{
+       float i;
+       for(i = -400; i < 0; ++i)
+       {
+               float db = i * 0.1;
+               float v = fromDecibelOfSquare(db, -40);
+               float dbv = toDecibelOfSquare(v, -40);
+               float d = dbv - db;
+               print(sprintf("%f -> %f -> %f (diff: %f)\n", db, v, dbv, d));
+               TEST_Check(fabs(d) > 0.02);
+       }
+       TEST_OK();
+}
+
 #endif