84 lines
2.0 KiB
Go
84 lines
2.0 KiB
Go
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// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package dnsdisc
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import (
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"math/rand"
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"strconv"
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"testing"
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)
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func TestLinkCache(t *testing.T) {
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var lc linkCache
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// Check adding links.
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lc.addLink("1", "2")
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if !lc.changed {
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t.Error("changed flag not set")
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}
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lc.changed = false
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lc.addLink("1", "2")
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if lc.changed {
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t.Error("changed flag set after adding link that's already present")
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}
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lc.addLink("2", "3")
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lc.addLink("3", "1")
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lc.addLink("2", "4")
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lc.changed = false
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if !lc.isReferenced("3") {
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t.Error("3 not referenced")
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}
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if lc.isReferenced("6") {
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t.Error("6 is referenced")
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}
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lc.resetLinks("1", nil)
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if !lc.changed {
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t.Error("changed flag not set")
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}
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if len(lc.backrefs) != 0 {
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t.Logf("%+v", lc)
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t.Error("reference maps should be empty")
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}
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}
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func TestLinkCacheRandom(t *testing.T) {
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tags := make([]string, 1000)
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for i := range tags {
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tags[i] = strconv.Itoa(i)
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}
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// Create random links.
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var lc linkCache
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var remove []string
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for i := 0; i < 100; i++ {
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a, b := tags[rand.Intn(len(tags))], tags[rand.Intn(len(tags))]
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lc.addLink(a, b)
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remove = append(remove, a)
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}
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// Remove all the links.
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for _, s := range remove {
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lc.resetLinks(s, nil)
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}
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if len(lc.backrefs) != 0 {
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t.Logf("%+v", lc)
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t.Error("reference maps should be empty")
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}
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}
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