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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 sketch
import (
"os"
"path/filepath"
"reflect"
"testing"
"github.com/chmduquesne/rollinghash/rabinkarp64"
)
func TestSketchChunk(t *testing.T) {
var sketch, expected Sketch
var err error
dataDir := "testdata"
pol, err := rabinkarp64.RandomPolynomial(1)
if err != nil {
t.Fatal(err)
}
c0, err := os.Open(filepath.Join(dataDir, "000000000000000"))
if err != nil {
t.Fatal(err)
}
sketch, err = SketchChunk(c0, pol, 8<<10, 32, 3, 4)
if err != nil {
t.Fatal(err)
}
expected = Sketch{429857165471867, 6595034117354675, 8697818304802825}
if !reflect.DeepEqual(sketch, expected) {
t.Errorf("Sketch does not match, expected: %d, actual: %d", expected, sketch)
}
c14, err := os.Open(filepath.Join(dataDir, "000000000000014"))
sketch, err = SketchChunk(c14, pol, 8<<10, 32, 3, 4)
if err != nil {
t.Error(err)
}
expected = Sketch{658454504014104}
if !reflect.DeepEqual(sketch, expected) {
t.Errorf("Sketch does not match, expected: %d, actual: %d", expected, sketch)
}
}
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