fate: add bprint test.

tests/fate/libavutil.mak

@@ -12,6 +12,10 @@ FATE_LIBAVUTIL += fate-base64
 fate-base64: libavutil/base64-test$(EXESUF)
 fate-base64: CMD = run libavutil/base64-test
 
+FATE_LIBAVUTIL += fate-bprint
+fate-bprint: libavutil/bprint-test$(EXESUF)
+fate-bprint: CMD = run libavutil/bprint-test
+
 FATE_LIBAVUTIL += fate-crc
 fate-crc: libavutil/crc-test$(EXESUF)
 fate-crc: CMD = run libavutil/crc-test

tests/ref/fate/bprint

+Short text in unlimited buffer: 174/174
+       1
+       1       1
+       1       2       1
+       1       3       3       1
+       1       4       6       4       1
+       1       5      10      10       5       1
+
+Long text in unlimited buffer: 2834/2834
+Long text in limited buffer: 2047/2834
+Short text in automatic buffer: 174/174
+Long text in automatic buffer: 1003/2834
+Long text count only buffer: 0/2834
+Long text count only buffer: 255/2834