.

wcfs/internal/zdata/δftail_test.go

@@ -213,6 +213,8 @@ func testΔFtail(t_ *testing.T, testq chan ΔFTestEntry) {
 	}
 
 	xat := map[zodb.Tid]string{} // tid > "at<i>"
+	xat[δftail.Head()] = "at0"
+	t.Logf("#   @at0 (%s)", δftail.Head())
 
 	// δfstr/vδfstr converts δf/vδf to string taking xat into account
 	δfstr := func(δf *ΔFile) string {
@@ -311,7 +313,7 @@ func testΔFtail(t_ *testing.T, testq chan ΔFTestEntry) {
 
 		xat[commit.At] = fmt.Sprintf("at%d", i)
 		t.Logf("# → @%s (%s)  δT%s  δD%s\t; %s\tδ%s", xat[commit.At], commit.At, xbtreetest.KVTxt(test.δblkTab), test.δdataTab, tTxt, δblk)
-		//t.Logf("#   vδf: %s", vδfstr(vδf))
+		t.Logf("#   vδf: %s", vδfstr(vδf))
 
 		//fmt.Printf("Zinblk: %v\n", Zinblk)
 
@@ -370,7 +372,8 @@ func testΔFtail(t_ *testing.T, testq chan ΔFTestEntry) {
 			t.Logf("# forget ≤ @%s", xat[revcut])
 			δftail.ForgetPast(revcut)
 			vδf = vδf[1:]
-			//t.Logf("#   vδf: %s", vδfstr(vδf))
+			t.Logf("#   vδf: %s", vδfstr(vδf))
+			t.Logf("#   vδt: %s", vδfstr(δftail.SliceByFileRev(zfile, δftail.Tail(), δftail.Head())))
 		}
 
 		// SliceByFileRev