mirror of
https://github.com/luxfi/zapdb.git
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zeekay
a6be21b7ea
Removed /v4 suffix from module path and all internal imports. Go module is now github.com/luxfi/zapdb (no major version suffix). Import as: import "github.com/luxfi/zapdb" No code changes — only module path and import rewrite.
167 lines
4.3 KiB
Go
167 lines
4.3 KiB
Go
/*
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* SPDX-FileCopyrightText: © 2017-2025 Istari Digital, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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package trie
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import (
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"sort"
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/luxfi/zapdb/pb"
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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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t.Logf("Num nodes: %d", numNodes(trie.root))
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require.Equal(t, 1, numNodes(trie.root))
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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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t.Logf("Num nodes: %d", numNodes(trie.root))
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require.NoError(t, trie.Delete([]byte("hello"), 4))
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t.Logf("Num nodes: %d", numNodes(trie.root))
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require.Equal(t, map[uint64]struct{}{5: {}, 1: {}, 3: {}}, trie.Get([]byte("hello")))
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require.NoError(t, trie.Delete(nil, 5))
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t.Logf("Num nodes: %d", numNodes(trie.root))
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require.Equal(t, map[uint64]struct{}{1: {}, 3: {}}, trie.Get([]byte("hello")))
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require.NoError(t, trie.Delete([]byte("hello"), 1))
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require.NoError(t, trie.Delete([]byte("hello"), 3))
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require.NoError(t, trie.Delete([]byte("hello"), 4))
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require.NoError(t, trie.Delete([]byte("hello"), 5))
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require.NoError(t, trie.Delete([]byte("hello"), 6))
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require.Equal(t, 1, numNodes(trie.root))
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t.Logf("Num nodes: %d", numNodes(trie.root))
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require.Equal(t, true, trie.root.isEmpty())
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require.Equal(t, map[uint64]struct{}{}, trie.Get([]byte("hello")))
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}
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func TestParseIgnoreBytes(t *testing.T) {
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out, err := parseIgnoreBytes("1")
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require.NoError(t, err)
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require.Equal(t, []bool{false, true}, out)
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out, err = parseIgnoreBytes("0")
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require.NoError(t, err)
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require.Equal(t, []bool{true}, out)
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out, err = parseIgnoreBytes("0, 3 - 5, 7")
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require.NoError(t, err)
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require.Equal(t, []bool{true, false, false, true, true, true, false, true}, out)
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}
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func TestPrefixMatchWithHoles(t *testing.T) {
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trie := NewTrie()
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add := func(prefix, ignore string, id uint64) {
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m := pb.Match{
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Prefix: []byte(prefix),
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IgnoreBytes: ignore,
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}
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require.NoError(t, trie.AddMatch(m, id))
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}
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add("", "", 1)
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add("aaaa", "", 2)
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add("aaaaaa", "2-10", 3)
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add("aaaaaaaaa", "0, 4 - 6, 8", 4)
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get := func(k string) []uint64 {
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var ids []uint64
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m := trie.Get([]byte(k))
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for id := range m {
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ids = append(ids, id)
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}
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sort.Slice(ids, func(i, j int) bool {
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return ids[i] < ids[j]
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})
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return ids
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}
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// Everything matches 1
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require.Equal(t, []uint64{1}, get(""))
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require.Equal(t, []uint64{1}, get("aax"))
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// aaaaa would match 2, but not 3 because 3's length is 6.
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require.Equal(t, []uint64{1, 2}, get("aaaaa"))
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// aa and enough length is sufficient to match 3.
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require.Equal(t, []uint64{1, 3}, get("aabbbbbbbb"))
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// has differences in the right place to match 4.
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require.Equal(t, []uint64{1, 4}, get("baaabbbabba"))
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// Even with differences matches everything.
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require.Equal(t, []uint64{1, 2, 3, 4}, get("aaaabbbabba"))
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t.Logf("Num nodes: %d", numNodes(trie.root))
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del := func(prefix, ignore string, id uint64) {
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m := pb.Match{
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Prefix: []byte(prefix),
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IgnoreBytes: ignore,
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}
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require.NoError(t, trie.DeleteMatch(m, id))
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}
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del("aaaaaaaaa", "0, 4 - 6, 8", 5)
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t.Logf("Num nodes: %d", numNodes(trie.root))
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del("aaaaaaaaa", "0, 4 - 6, 8", 4)
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t.Logf("Num nodes: %d", numNodes(trie.root))
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del("aaaaaa", "2-10", 3)
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t.Logf("Num nodes: %d", numNodes(trie.root))
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del("aaaa", "", 2)
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t.Logf("Num nodes: %d", numNodes(trie.root))
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del("", "", 1)
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t.Logf("Num nodes: %d", numNodes(trie.root))
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del("abracadabra", "", 4)
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t.Logf("Num nodes: %d", numNodes(trie.root))
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require.Equal(t, 1, numNodes(trie.root))
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}
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