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// Copyright 2015 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v2store
import (
"reflect"
"testing"
"time"
"go.etcd.io/etcd/client/pkg/v3/testutil"
)
func TestNodeExternClone(t *testing.T) {
var eNode *NodeExtern
if g := eNode.Clone(); g != nil {
t.Fatalf("nil.Clone=%v, want nil", g)
}
const (
key string = "/foo/bar"
ttl int64 = 123456789
ci uint64 = 123
mi uint64 = 321
)
var (
val = "some_data"
valp = &val
exp = time.Unix(12345, 67890)
expp = &exp
child = NodeExtern{}
childp = &child
childs = []*NodeExtern{childp}
)
eNode = &NodeExtern{
Key: key,
TTL: ttl,
CreatedIndex: ci,
ModifiedIndex: mi,
Value: valp,
Expiration: expp,
Nodes: childs,
}
gNode := eNode.Clone()
// Check the clone is as expected
testutil.AssertEqual(t, gNode.Key, key)
testutil.AssertEqual(t, gNode.TTL, ttl)
testutil.AssertEqual(t, gNode.CreatedIndex, ci)
testutil.AssertEqual(t, gNode.ModifiedIndex, mi)
// values should be the same
testutil.AssertEqual(t, *gNode.Value, val)
testutil.AssertEqual(t, *gNode.Expiration, exp)
testutil.AssertEqual(t, len(gNode.Nodes), len(childs))
testutil.AssertEqual(t, *gNode.Nodes[0], child)
// but pointers should differ
if gNode.Value == eNode.Value {
t.Fatalf("expected value pointers to differ, but got same!")
}
if gNode.Expiration == eNode.Expiration {
t.Fatalf("expected expiration pointers to differ, but got same!")
}
if sameSlice(gNode.Nodes, eNode.Nodes) {
t.Fatalf("expected nodes pointers to differ, but got same!")
}
// Original should be the same
testutil.AssertEqual(t, eNode.Key, key)
testutil.AssertEqual(t, eNode.TTL, ttl)
testutil.AssertEqual(t, eNode.CreatedIndex, ci)
testutil.AssertEqual(t, eNode.ModifiedIndex, mi)
testutil.AssertEqual(t, eNode.Value, valp)
testutil.AssertEqual(t, eNode.Expiration, expp)
if !sameSlice(eNode.Nodes, childs) {
t.Fatalf("expected nodes pointer to same, but got different!")
}
// Change the clone and ensure the original is not affected
gNode.Key = "/baz"
gNode.TTL = 0
gNode.Nodes[0].Key = "uno"
testutil.AssertEqual(t, eNode.Key, key)
testutil.AssertEqual(t, eNode.TTL, ttl)
testutil.AssertEqual(t, eNode.CreatedIndex, ci)
testutil.AssertEqual(t, eNode.ModifiedIndex, mi)
testutil.AssertEqual(t, *eNode.Nodes[0], child)
// Change the original and ensure the clone is not affected
eNode.Key = "/wuf"
testutil.AssertEqual(t, eNode.Key, "/wuf")
testutil.AssertEqual(t, gNode.Key, "/baz")
}
func sameSlice(a, b []*NodeExtern) bool {
va := reflect.ValueOf(a)
vb := reflect.ValueOf(b)
return va.Len() == vb.Len() && va.Pointer() == vb.Pointer()
}
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