.

wcfs/internal/zdata/δftail_test.go

@@ -28,6 +28,7 @@ package zdata
 import (
 	"context"
 	"fmt"
+	"reflect"
 	"sort"
 	"strings"
 	"testing"
@@ -98,7 +99,7 @@ func TestΔFtail(t_ *testing.T) {
 	}
 
 	// data built via applying changes from testv
-	vδf     := []ΔFile{}           // (rev↑, {}blk)		XXX +.Size?
+	vδf     := []*ΔFile{}          // (rev↑, {}blk)		XXX +.Size?
 	blkTab  := map[int64]string{}  // #blk -> ZBlk<oid>
 	dataTab := map[string]string{} // ZBlk<oid> -> data
 	Zinblk  := map[string]setI64{} // ZBlk<oid> -> which #blk refer to it
@@ -111,7 +112,7 @@ func TestΔFtail(t_ *testing.T) {
 
 
 	for i, test := range testv {
-		δf := setI64{}
+		δblk := setI64{}
 
 		// rebuild blkTab/Zinblk
 		for blk, zblk := range test.δblkTab {
@@ -132,9 +133,9 @@ func TestΔFtail(t_ *testing.T) {
 				inblk.Add(blk)
 			}
 
-			// update δf due to change in blkTab
+			// update δblk due to change in blkTab
 			if zblk != zprev {
-				δf.Add(blk)
+				δblk.Add(blk)
 			}
 		}
 
@@ -147,29 +148,56 @@ func TestΔFtail(t_ *testing.T) {
 			data = fmt.Sprintf("%s%d", data[:1], i) // e.g. a4
 			dataTab[zblk] = data
 
-			// update δf due to change in ZBlk data
+			// update δblk due to change in ZBlk data
 			for blk := range Zinblk[zblk] {
-				δf.Add(blk)
+				δblk.Add(blk)
 			}
 		}
 
-		vδf = append(vδf, ΔFile{
-				Rev:    zodb.InvalidTid, // XXX will be set after treegen commit
-				Blocks: δf,
+		if len(δblk) == 0 {
+			t.Fatal("BUG: prepared δblk = ø")
+		}
+
+		δfok := &ΔFile{
+			Rev:    zodb.InvalidTid, // will be set after treegen commit
+			Blocks: δblk,
 			Size:   false/*XXX*/,
-		})
+		}
 
 		// commit updated blkTab + dataTab
 		tdTxt := fmt.Sprintf("t%s D%s", xbtreetest.KVTxt(blkTab), dataTabTxt(dataTab))
 		commit := t.CommitTree(tdTxt)
+
+		δfok.Rev = commit.At
+		vδf = append(vδf, δfok)
+
 		fmt.Printf("@%s  δT: %v   δD: %s\n", commit.At, test.δblkTab, test.δdataTab)
 		fmt.Printf("@%s  %s\n", commit.At, commit.Tree)
 
 		// update δftail
 		δF, err := δftail.Update(commit.ΔZ);  X(err)
 
-		// XXX assert 
-		_ = δF
+		// assert δF points to the file
+		if δF.Rev != δfok.Rev {
+			t.Errorf("wrong δF.Rev: have %s  ; want %s", δF.Rev, δfok.Rev)
+		}
+		δfiles := setOid{}
+		for δfile := range δF.ByFile {
+			δfiles.Add(δfile)
+		}
+		δfilesOK := setOid{}; δfilesOK.Add(zfile.POid())
+		if !δfiles.Equal(δfilesOK) {
+			t.Errorf("wrong δF.ByFile:\nhave keys: %s\nwant keys: %s", δfiles, δfilesOK)
+			continue
+		}
+
+		// verify δf
+		δf := δF.ByFile[zfile.POid()]
+		if !reflect.DeepEqual(δf, δfok) {
+			t.Errorf("wrong δf:\nhave: %v\nwant: %v", δf, δfok)
+		}
+
+		// XXX verify SliceByFileRev + LastBlkRev
 	}
 }