fate: Add test for webp

tests/fate/image.mak

@@ -223,6 +223,9 @@ FATE_TIFF-$(call DEMDEC, IMAGE2, TIFF) += $(FATE_TIFF)
 FATE_SAMPLES_AVCONV += $(FATE_TIFF-yes)
 fate-tiff: $(FATE_TIFF-yes)
 
+FATE_SAMPLES_AVCONV-$(call DEMDEC, IMAGE2, WEBP) += fate-webp
+fate-webp: CMD = framecrc -i $(TARGET_SAMPLES)/webp/image_small.webp
+
 FATE_XBM += fate-xbm10
 fate-xbm10: CMD = framecrc -i $(TARGET_SAMPLES)/xbm/xl.xbm
 

tests/ref/fate/webp

@@ -0,0 +1,2 @@
+#tb 0: 1/25
+0,          0,          0,        1,   135200, 0xc2e0319d