.

wcfs/δbtail_test.go

@@ -519,6 +519,33 @@ func TestΔBTail(t *testing.T) {
 		"T/B2:c",	// 2: b->c
 		"T2/B1:a-B2:c",	// +1 in new bucket
 
+		// bucket split; +3 in new bucket
+		"T/B1:a,2:b",
+		"T2/B1:a-B2:b,3:c",
+
+		// bucket split; +3 in new bucket; +4 +5 in another new bucket
+		// which remain not tracked (TODO verify)
+		"T/B1:a,2:b",
+		"T2,4/B1:a-B2:b,3:c-B4:d,5:e",
+
+		// depth=2; bucket split; +3 in new bucket; left T remain
+		// _unchanged_ even though B under it is modified; right arm is
+		// added to tracking set because 2 migrates there.
+		"T/T/B1:a,2:b",
+		"T2/T-T/B1:a-B2:b,3:c",
+
+		// depth=2; like prev. case, but additional right arm with +4
+		// +5 is added which remain not tracked (TODO verify)
+		"T/T/B1:a,2:b",
+		"T2,4/T-T-T/B1:a-B2:b,3:c-B4:d,5:e",
+
+		// depth=2; bucket split; +3 in new bucket; t0 and t1 split;
+		// +right arm (T7/B45-B89) which remain not tracked (TODO verify)
+		"T/T/B1:a,2:b",
+		"T4/T2-T7/B1:a-B2:b,3:c-B4:d,5:e-B8:h,9:i",
+
+
+
 		// XXX more
 
 		// degenerate topology from ZODB tests