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package zk
import (
"testing"
"time"
)
func TestLock(t *testing.T) {
ts, err := StartTestCluster(1, nil, logWriter{t: t, p: "[ZKERR] "})
if err != nil {
t.Fatal(err)
}
defer ts.Stop()
zk, _, err := ts.ConnectAll()
if err != nil {
t.Fatalf("Connect returned error: %+v", err)
}
defer zk.Close()
acls := WorldACL(PermAll)
l := NewLock(zk, "/test", acls)
if err := l.Lock(); err != nil {
t.Fatal(err)
}
if err := l.Unlock(); err != nil {
t.Fatal(err)
}
val := make(chan int, 3)
if err := l.Lock(); err != nil {
t.Fatal(err)
}
l2 := NewLock(zk, "/test", acls)
go func() {
if err := l2.Lock(); err != nil {
t.Fatal(err)
}
val <- 2
if err := l2.Unlock(); err != nil {
t.Fatal(err)
}
val <- 3
}()
time.Sleep(time.Millisecond * 100)
val <- 1
if err := l.Unlock(); err != nil {
t.Fatal(err)
}
if x := <-val; x != 1 {
t.Fatalf("Expected 1 instead of %d", x)
}
if x := <-val; x != 2 {
t.Fatalf("Expected 2 instead of %d", x)
}
if x := <-val; x != 3 {
t.Fatalf("Expected 3 instead of %d", x)
}
}
// This tests creating a lock with a path that's more than 1 node deep (e.g. "/test-multi-level/lock"),
// when a part of that path already exists (i.e. "/test-multi-level" node already exists).
func TestMultiLevelLock(t *testing.T) {
ts, err := StartTestCluster(1, nil, logWriter{t: t, p: "[ZKERR] "})
if err != nil {
t.Fatal(err)
}
defer ts.Stop()
zk, _, err := ts.ConnectAll()
if err != nil {
t.Fatalf("Connect returned error: %+v", err)
}
defer zk.Close()
acls := WorldACL(PermAll)
path := "/test-multi-level"
if p, err := zk.Create(path, []byte{1, 2, 3, 4}, 0, WorldACL(PermAll)); err != nil {
t.Fatalf("Create returned error: %+v", err)
} else if p != path {
t.Fatalf("Create returned different path '%s' != '%s'", p, path)
}
l := NewLock(zk, "/test-multi-level/lock", acls)
defer zk.Delete("/test-multi-level", -1) // Clean up what we've created for this test
defer zk.Delete("/test-multi-level/lock", -1)
if err := l.Lock(); err != nil {
t.Fatal(err)
}
if err := l.Unlock(); err != nil {
t.Fatal(err)
}
}
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