diff --git a/src/FluidBufCompose/tests.scd b/src/FluidBufCompose/tests.scd
index a657c88..e157e02 100644
--- a/src/FluidBufCompose/tests.scd
+++ b/src/FluidBufCompose/tests.scd
@@ -50,4 +50,21 @@ Routine{
 	s.sync;
 	(Main.elapsedTime - t).postln;
 }.play;
-)
\ No newline at end of file
+)
+
+// trying to grow a buffer on itself
+e = Buffer.alloc(s,1,1);
+(
+Routine {
+	FluidBufCompose.process(s,srcBufNumA: b.bufnum, srcBufNumB: e.bufnum, dstBufNum: e.bufnum);
+	s.sync;
+	e.query;
+	s.sync;
+	FluidBufCompose.process(s,srcBufNumA: c.bufnum,  nChansA: 1, srcBufNumB: e.bufnum, dstBufNum: e.bufnum);
+	s.sync;
+	e.query;
+}.play;
+)
+
+e.plot
+e.play
\ No newline at end of file
diff --git a/src/FluidBufNMF/tests.scd b/src/FluidBufNMF/tests.scd
index 8a8f769..d7a2a5e 100644
--- a/src/FluidBufNMF/tests.scd
+++ b/src/FluidBufNMF/tests.scd
@@ -159,3 +159,46 @@ Routine({
 	c.getn(0,100,{|x| x.postln});
 }).play;
 )
+
+// fixed dictionaries experiment
+Buffer.freeAll;
+
+(
+b = Buffer.read(s,"../../release-packaging/AudioFiles/Tremblay-AaS-AcousticStrums-M.wav".resolveRelative);
+c = Buffer.new(s);
+x = Buffer.new(s);
+e = Buffer.alloc(s,1,1);
+)
+
+(
+Routine {
+	FluidBufNMF.process(s,b.bufnum,0,88200,0,1, c.bufnum, x.bufnum, rank:10);
+	s.sync;
+	c.query;
+}.play;
+)
+
+// find the picking
+{PlayBuf.ar(10,c.bufnum)[5]}.play
+
+// copy all the other ranks on itself (the 5 above is omited from the array and is in the 2nd compose
+(
+Routine{
+	[ 0, 1, 2, 3, 4, 6, 7, 8, 9 ].do({|chan|FluidBufCompose.process(s,srcBufNumA: x.bufnum, startChanA:chan, nChansA: 1, srcBufNumB: e.bufnum, dstBufNum: e.bufnum)});
+	s.sync;
+	e.query;
+	s.sync;
+	FluidBufCompose.process(s,srcBufNumA: x.bufnum, startChanA: 5, nChansA: 1, srcBufNumB: e.bufnum, dstStartChanB: 1, dstBufNum: e.bufnum);
+	s.sync;
+	e.query;
+}.play;
+)
+
+//
+(
+Routine{
+	FluidBufNMF.process(s, b.bufnum, dstBufNum: c.bufnum, dictBufNum: e.bufnum, dictFlag: 2, rank:2);
+	s.sync;
+	c.query;
+}.play;
+)
\ No newline at end of file