mirror of
https://github.com/luxfi/zapdb.git
synced 2026-10-30 15:12:20 +00:00
Ibrahim JarifandGitHub
5b8218b9f8
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{})
```
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
/*
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* Copyright 2019 Dgraph Labs, Inc. and Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package trie
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import (
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestGet(t *testing.T) {
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trie := NewTrie()
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trie.Add([]byte("hello"), 1)
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trie.Add([]byte("hello"), 3)
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trie.Add([]byte("hello"), 4)
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trie.Add([]byte("hel"), 20)
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trie.Add([]byte("he"), 20)
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trie.Add([]byte("badger"), 30)
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trie.Add(nil, 10)
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require.Equal(t, map[uint64]struct{}{10: {}}, trie.Get([]byte("A")))
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ids := trie.Get([]byte("hel"))
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require.Equal(t, 2, len(ids))
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require.Equal(t, map[uint64]struct{}{10: {}, 20: {}}, ids)
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ids = trie.Get([]byte("badger"))
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require.Equal(t, 2, len(ids))
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require.Equal(t, map[uint64]struct{}{10: {}, 30: {}}, ids)
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ids = trie.Get([]byte("hello"))
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require.Equal(t, 5, len(ids))
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require.Equal(t, map[uint64]struct{}{10: {}, 1: {}, 3: {}, 4: {}, 20: {}}, ids)
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trie.Add([]byte{}, 11)
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require.Equal(t, map[uint64]struct{}{10: {}, 11: {}}, trie.Get([]byte("A")))
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}
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func TestTrieDelete(t *testing.T) {
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trie := NewTrie()
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trie.Add([]byte("hello"), 1)
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trie.Add([]byte("hello"), 3)
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trie.Add([]byte("hello"), 4)
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trie.Add(nil, 5)
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trie.Delete([]byte("hello"), 4)
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require.Equal(t, map[uint64]struct{}{5: {}, 1: {}, 3: {}}, trie.Get([]byte("hello")))
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trie.Delete(nil, 5)
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require.Equal(t, map[uint64]struct{}{1: {}, 3: {}}, trie.Get([]byte("hello")))
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}
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