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/* Copyright (C) 2021 Nicolas Peugnet <n.peugnet@free.fr>
This file is part of dna-backup.
dna-backup is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dna-backup is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dna-backup. If not, see <https://www.gnu.org/licenses/>. */
package cache
import (
"bytes"
"testing"
)
func TestFifoChunkCache(t *testing.T) {
var v []byte
var e bool
var cache Cacher = NewFifoCache(3)
k0 := 0
k1 := 1
k2 := 2
k3 := 3
v0 := []byte{'0'}
v1 := []byte{'1'}
v2 := []byte{'2'}
v3 := []byte{'3'}
if cache.Len() != 0 {
t.Fatal("Cache should be of size 0")
}
v, e = cache.Get(k0)
if e {
t.Fatal("There should not be any value")
}
cache.Set(k0, v0)
cache.Set(k1, v1)
cache.Set(k2, v2)
if cache.Len() != 3 {
t.Fatal("Cache should be of size 3")
}
v, e = cache.Get(k0)
if !e {
t.Fatal("Value should exist for k0")
}
if bytes.Compare(v, v0) != 0 {
t.Fatal("Value for k0 does not match")
}
cache.Set(k3, v3)
if cache.Len() != 3 {
t.Fatal("Cache should still be of size 3")
}
v, e = cache.Get(k0)
if e {
t.Fatal("Value should not exist for k0")
}
v, e = cache.Get(k1)
if !e {
t.Fatal("Value should exist for k1")
}
if bytes.Compare(v, v1) != 0 {
t.Fatal("Value for k1 does not match")
}
v, e = cache.Get(k2)
if !e {
t.Fatal("Value should exist for k2")
}
if bytes.Compare(v, v2) != 0 {
t.Fatal("Value for k2 does not match")
}
v, e = cache.Get(k3)
if !e {
t.Fatal("Value should exist for k3")
}
if bytes.Compare(v, v3) != 0 {
t.Fatal("Value for k3 does not match")
}
}
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