av/codec/jpeg/extract_test.go

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2022-05-31 08:17:06 +03:00
/*
DESCRIPTION
extract_test.go provides testing for extract.go.
AUTHOR
Scott Barnard <scott@ausocean.org>
LICENSE
Copyright (C) 2020 the Australian Ocean Lab (AusOcean)
It is free software: you can redistribute it and/or modify them
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.
It 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 revid in gpl.txt. If not, see http://www.gnu.org/licenses.
*/
package jpeg
import (
"bytes"
"io"
"io/ioutil"
"testing"
)
type testReader struct {
i int
}
func (r *testReader) Read(b []byte) (int, error) {
if r.i >= len(testPackets) {
return 0, io.EOF
}
copy(b, testPackets[r.i])
r.i++
return len(testPackets[r.i-1]), nil
}
func TestExtract(t *testing.T) {
got := &bytes.Buffer{}
err := NewExtractor().Extract(got, &testReader{}, 0)
if err != nil {
t.Fatalf("could not extract: %v", err)
}
want, err := ioutil.ReadFile("testdata/expect.mjpeg")
if err != nil {
t.Fatalf("could not read file for wanted JPEG data: %v", err)
}
if !bytes.Equal(got.Bytes(), want) {
t.Error("did not get expected result")
}
}