mirror of
https://github.com/luxfi/zapdb.git
synced 2026-10-30 15:12:20 +00:00
Ibrahim Jarif
8f0752ad02
This PR adds support for watching empty prefixes (all keys) in subscribe API.
To subscribe to all changes in badger, user can run
```go
db.Subscribe(ctx, handler, nil)
```
or
```go
db.Subscribe(ctx, handler, []byte{})
```
(cherry picked from commit 5b8218b9f8)
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
/*
|
|
* Copyright 2019 Dgraph Labs, Inc. and Contributors
|
|
*
|
|
* 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 trie
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestGet(t *testing.T) {
|
|
trie := NewTrie()
|
|
trie.Add([]byte("hello"), 1)
|
|
trie.Add([]byte("hello"), 3)
|
|
trie.Add([]byte("hello"), 4)
|
|
trie.Add([]byte("hel"), 20)
|
|
trie.Add([]byte("he"), 20)
|
|
trie.Add([]byte("badger"), 30)
|
|
|
|
trie.Add(nil, 10)
|
|
require.Equal(t, map[uint64]struct{}{10: {}}, trie.Get([]byte("A")))
|
|
|
|
ids := trie.Get([]byte("hel"))
|
|
require.Equal(t, 2, len(ids))
|
|
require.Equal(t, map[uint64]struct{}{10: {}, 20: {}}, ids)
|
|
|
|
ids = trie.Get([]byte("badger"))
|
|
require.Equal(t, 2, len(ids))
|
|
require.Equal(t, map[uint64]struct{}{10: {}, 30: {}}, ids)
|
|
|
|
ids = trie.Get([]byte("hello"))
|
|
require.Equal(t, 5, len(ids))
|
|
require.Equal(t, map[uint64]struct{}{10: {}, 1: {}, 3: {}, 4: {}, 20: {}}, ids)
|
|
|
|
trie.Add([]byte{}, 11)
|
|
require.Equal(t, map[uint64]struct{}{10: {}, 11: {}}, trie.Get([]byte("A")))
|
|
|
|
}
|
|
|
|
func TestTrieDelete(t *testing.T) {
|
|
trie := NewTrie()
|
|
trie.Add([]byte("hello"), 1)
|
|
trie.Add([]byte("hello"), 3)
|
|
trie.Add([]byte("hello"), 4)
|
|
trie.Add(nil, 5)
|
|
|
|
trie.Delete([]byte("hello"), 4)
|
|
|
|
require.Equal(t, map[uint64]struct{}{5: {}, 1: {}, 3: {}}, trie.Get([]byte("hello")))
|
|
|
|
trie.Delete(nil, 5)
|
|
require.Equal(t, map[uint64]struct{}{1: {}, 3: {}}, trie.Get([]byte("hello")))
|
|
}
|