.

wcfs/δbtail_test.go

@@ -23,12 +23,14 @@ import (
 	"bufio"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"os"
 	"os/exec"
 	"regexp"
 	"strings"
 	"testing"
 
+	"lab.nexedi.com/kirr/go123/exc"
 	"lab.nexedi.com/kirr/go123/xerr"
 	"lab.nexedi.com/kirr/neo/go/zodb"
 )
@@ -51,6 +53,7 @@ type TreeGen struct {
 func StartTreeGen(zurl string) (_ *TreeGen, err error) {
 	defer xerr.Contextf(&err, "treegen %s: start", zurl)
 
+	// spawn `treegen trees`
 	tg := &TreeGen{zurl: zurl}
 	tg.pysrv = exec.Command("./testprog/treegen.py", "trees")
 	tg.pysrv.Stdin, tg.pyin      = io.Pipe()
@@ -63,7 +66,6 @@ func StartTreeGen(zurl string) (_ *TreeGen, err error) {
 		return nil, err
 	}
 
-
 	// wait for start message; initialize .head and .treeRoot from it
 	defer func() {
 		if err != nil {
@@ -149,6 +151,8 @@ func XXX(t *testing.T, tree1, tree2 string) {
 }
 
 func TestΔBTail(t *testing.T) {
+	X := exc.Raiseif
+
 	// XXX test known cases tree1 -> tree2
 	testv := []struct { tree1, tree2 string } {
 		{"T/B", "T/B"},
@@ -156,6 +160,15 @@ func TestΔBTail(t *testing.T) {
 		// XXX
 	}
 
+	work, err := ioutil.TempDir("", "δBTail"); X(err)
+	defer func() {
+		err := os.RemoveAll(work); X(err)
+	}()
+	tg, err := StartTreeGen(work + "/1.fs"); X(err)
+	defer func() {
+		err := tg.Close(); X(err)
+	}()
+
 	for _, test := range testv {
 		XXX(t, test.tree1, test.tree2)
 		XXX(t, test.tree2, test.tree1)