mirror of
https://github.com/ethereum/go-ethereum.git
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109 lines
2.9 KiB
Go
109 lines
2.9 KiB
Go
// Copyright 2026 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 download
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import (
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"crypto/sha256"
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"fmt"
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"io"
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"net/http"
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"net/http/httptest"
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"os"
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"path/filepath"
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"strings"
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"testing"
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)
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func TestDownloadFileMissingDoesNotReportStale(t *testing.T) {
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db, server := newTestChecksumDB(t, "payload")
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defer server.Close()
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dst := filepath.Join(t.TempDir(), "payload.dat")
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var downloadErr error
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output := captureStdout(t, func() {
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downloadErr = db.DownloadFile(server.URL+"/payload.dat", dst)
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})
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if downloadErr != nil {
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t.Fatal(downloadErr)
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}
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if strings.Contains(output, "is stale") {
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t.Fatalf("missing file reported as stale:\n%s", output)
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}
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if !strings.Contains(output, "downloading from "+server.URL+"/payload.dat") {
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t.Fatalf("missing download log not found:\n%s", output)
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}
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}
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func TestDownloadFileHashMismatchReportsStale(t *testing.T) {
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db, server := newTestChecksumDB(t, "payload")
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defer server.Close()
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dst := filepath.Join(t.TempDir(), "payload.dat")
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if err := os.WriteFile(dst, []byte("old payload"), 0644); err != nil {
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t.Fatal(err)
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}
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var downloadErr error
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output := captureStdout(t, func() {
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downloadErr = db.DownloadFile(server.URL+"/payload.dat", dst)
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})
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if downloadErr != nil {
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t.Fatal(downloadErr)
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}
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if !strings.Contains(output, dst+" is stale") {
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t.Fatalf("stale download log not found:\n%s", output)
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}
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}
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func newTestChecksumDB(t *testing.T, content string) (*ChecksumDB, *httptest.Server) {
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t.Helper()
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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_, _ = io.WriteString(w, content)
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}))
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sum := sha256.Sum256([]byte(content))
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db, err := ParseChecksums([]byte(fmt.Sprintf("%x payload.dat\n", sum)))
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if err != nil {
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server.Close()
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t.Fatal(err)
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}
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return db, server
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}
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func captureStdout(t *testing.T, fn func()) string {
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t.Helper()
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previous := os.Stdout
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reader, writer, err := os.Pipe()
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if err != nil {
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t.Fatal(err)
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}
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defer reader.Close()
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os.Stdout = writer
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defer func() {
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os.Stdout = previous
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}()
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fn()
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if err := writer.Close(); err != nil {
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t.Fatal(err)
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}
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output, err := io.ReadAll(reader)
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if err != nil {
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t.Fatal(err)
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}
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return string(output)
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}
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