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Delete internal/download/download_test.go

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Felix Lange 2026-05-05 15:24:24 +02:00 committed by GitHub
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internal/download/download_test.go
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// Copyright 2026 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package download
import (
"crypto/sha256"
"fmt"
"io"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"strings"
"testing"
)
func TestDownloadFileMissingDoesNotReportStale(t *testing.T) {
db, server := newTestChecksumDB(t, "payload")
defer server.Close()
dst := filepath.Join(t.TempDir(), "payload.dat")
var downloadErr error
output := captureStdout(t, func() {
downloadErr = db.DownloadFile(server.URL+"/payload.dat", dst)
})
if downloadErr != nil {
t.Fatal(downloadErr)
}
if strings.Contains(output, "is stale") {
t.Fatalf("missing file reported as stale:\n%s", output)
}
if !strings.Contains(output, "downloading from "+server.URL+"/payload.dat") {
t.Fatalf("missing download log not found:\n%s", output)
}
}
func TestDownloadFileHashMismatchReportsStale(t *testing.T) {
db, server := newTestChecksumDB(t, "payload")
defer server.Close()
dst := filepath.Join(t.TempDir(), "payload.dat")
if err := os.WriteFile(dst, []byte("old payload"), 0644); err != nil {
t.Fatal(err)
}
var downloadErr error
output := captureStdout(t, func() {
downloadErr = db.DownloadFile(server.URL+"/payload.dat", dst)
})
if downloadErr != nil {
t.Fatal(downloadErr)
}
if !strings.Contains(output, dst+" is stale") {
t.Fatalf("stale download log not found:\n%s", output)
}
}
func newTestChecksumDB(t *testing.T, content string) (*ChecksumDB, *httptest.Server) {
t.Helper()
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
_, _ = io.WriteString(w, content)
}))
sum := sha256.Sum256([]byte(content))
db, err := ParseChecksums([]byte(fmt.Sprintf("%x payload.dat\n", sum)))
if err != nil {
server.Close()
t.Fatal(err)
}
return db, server
}
func captureStdout(t *testing.T, fn func()) string {
t.Helper()
previous := os.Stdout
reader, writer, err := os.Pipe()
if err != nil {
t.Fatal(err)
}
defer reader.Close()
os.Stdout = writer
defer func() {
os.Stdout = previous
}()
fn()
if err := writer.Close(); err != nil {
t.Fatal(err)
}
output, err := io.ReadAll(reader)
if err != nil {
t.Fatal(err)
}
return string(output)
}