281 lines
6.8 KiB
Go
281 lines
6.8 KiB
Go
//go:build linux
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// Package handler 提供 Sendfile 功能的 Linux 平台测试。
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//
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// 该文件测试 Linux 平台特有的 Sendfile 功能，包括：
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// - Linux sendfile 系统调用
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// - 套接字文件描述符获取
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// - 小文件发送 fallback
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//
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// 作者：xfy
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package handler
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import (
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"bytes"
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"io"
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"net"
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"os"
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"path/filepath"
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"syscall"
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"testing"
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"time"
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"github.com/valyala/fasthttp"
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)
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func TestMinSendfileSize(t *testing.T) {
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if MinSendfileSize != 8*1024 {
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t.Errorf("Expected MinSendfileSize 8KB, got %d", MinSendfileSize)
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}
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}
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// TestCopyFile 测试 copyFile fallback 函数
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func TestCopyFile(t *testing.T) {
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tmpDir := t.TempDir()
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tmpFile := filepath.Join(tmpDir, "test.txt")
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content := []byte("Hello, World! This is test content for copyFile.")
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if err := os.WriteFile(tmpFile, content, 0o644); err != nil {
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t.Fatalf("Failed to create temp file: %v", err)
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}
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file, err := os.Open(tmpFile)
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if err != nil {
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t.Fatalf("Failed to open file: %v", err)
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}
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defer func() { _ = file.Close() }()
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tests := []struct {
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name string
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offset int64
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length int64
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wantLen int
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wantErr bool
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}{
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{
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name: "full file",
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offset: 0,
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length: 0,
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wantLen: len(content),
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wantErr: false,
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},
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{
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name: "with length",
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offset: 0,
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length: 10,
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wantLen: 10,
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wantErr: false,
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},
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{
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name: "with offset",
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offset: 7,
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length: 5,
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wantLen: 5,
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wantErr: false,
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},
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{
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name: "offset beyond file",
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offset: 1000,
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length: 10,
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wantLen: 0,
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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_, _ = file.Seek(0, io.SeekStart)
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ctx := &fasthttp.RequestCtx{}
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err := copyFile(ctx, file, tt.offset, tt.length)
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if tt.wantErr {
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if err == nil {
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t.Error("expected error, got nil")
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}
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} else {
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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body := ctx.Response.Body()
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if len(body) != tt.wantLen {
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t.Errorf("expected body length %d, got %d", tt.wantLen, len(body))
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}
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if tt.wantLen > 0 && tt.length == 0 {
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if string(body) != string(content[tt.offset:]) {
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t.Errorf("body content mismatch")
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}
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}
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}
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})
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}
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}
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// TestGetSocketFd_NilConn 测试 nil 连接的情况
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func TestGetSocketFd_NilConn(t *testing.T) {
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_, err := getSocketFd(nil)
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if err == nil {
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t.Error("expected error for nil connection")
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}
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}
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// TestGetSocketFd_UnsupportedType 测试不支持的连接类型
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func TestGetSocketFd_UnsupportedType(t *testing.T) {
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conn := &mockConn{}
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_, err := getSocketFd(conn)
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if err != syscall.ENOTSUP {
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t.Errorf("expected ENOTSUP for unsupported conn type, got: %v", err)
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}
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}
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// mockConn 是一个不实现 TCPConn/UnixConn 的连接
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type mockConn struct{}
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func (m *mockConn) Read([]byte) (n int, err error) { return 0, nil }
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func (m *mockConn) Write([]byte) (n int, err error) { return 0, nil }
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func (m *mockConn) Close() error { return nil }
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func (m *mockConn) LocalAddr() net.Addr { return nil }
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func (m *mockConn) RemoteAddr() net.Addr { return nil }
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func (m *mockConn) SetDeadline(time.Time) error { return nil }
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func (m *mockConn) SetReadDeadline(time.Time) error { return nil }
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func (m *mockConn) SetWriteDeadline(time.Time) error { return nil }
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// TestSendFile_SmallFile 测试小文件发送（使用 fallback）
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func TestSendFile_SmallFile(t *testing.T) {
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tmpDir := t.TempDir()
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tmpFile := filepath.Join(tmpDir, "small.txt")
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content := []byte("small file content")
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if err := os.WriteFile(tmpFile, content, 0o644); err != nil {
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t.Fatalf("Failed to create temp file: %v", err)
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}
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file, err := os.Open(tmpFile)
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if err != nil {
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t.Fatalf("Failed to open file: %v", err)
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}
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defer func() { _ = file.Close() }()
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ctx := &fasthttp.RequestCtx{}
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ctx.Init(&fasthttp.Request{}, nil, nil)
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err = SendFile(ctx, file, 0, int64(len(content)))
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if err != nil {
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t.Errorf("SendFile failed: %v", err)
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}
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if !bytes.Equal(ctx.Response.Body(), content) {
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t.Errorf("Expected body %s, got %s", content, ctx.Response.Body())
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}
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}
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// TestSendFile_WithOffset 测试带偏移量的文件发送
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func TestSendFile_WithOffset(t *testing.T) {
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tmpDir := t.TempDir()
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tmpFile := filepath.Join(tmpDir, "test.txt")
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content := []byte("0123456789ABCDEF")
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if err := os.WriteFile(tmpFile, content, 0o644); err != nil {
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t.Fatalf("Failed to create temp file: %v", err)
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}
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file, err := os.Open(tmpFile)
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if err != nil {
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t.Fatalf("Failed to open file: %v", err)
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}
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defer func() { _ = file.Close() }()
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ctx := &fasthttp.RequestCtx{}
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ctx.Init(&fasthttp.Request{}, nil, nil)
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err = SendFile(ctx, file, 5, 5)
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if err != nil {
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t.Errorf("SendFile failed: %v", err)
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}
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expected := content[5:10]
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if !bytes.Equal(ctx.Response.Body(), expected) {
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t.Errorf("Expected body %s, got %s", expected, ctx.Response.Body())
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}
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}
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// TestSendFile_ZeroLength 测试零长度文件
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func TestSendFile_ZeroLength(t *testing.T) {
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tmpDir := t.TempDir()
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tmpFile := filepath.Join(tmpDir, "empty.txt")
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if err := os.WriteFile(tmpFile, []byte{}, 0o644); err != nil {
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t.Fatalf("Failed to create temp file: %v", err)
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}
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file, err := os.Open(tmpFile)
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if err != nil {
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t.Fatalf("Failed to open file: %v", err)
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}
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defer func() { _ = file.Close() }()
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ctx := &fasthttp.RequestCtx{}
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ctx.Init(&fasthttp.Request{}, nil, nil)
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err = SendFile(ctx, file, 0, 0)
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if err != nil {
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t.Errorf("SendFile failed: %v", err)
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}
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if len(ctx.Response.Body()) != 0 {
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t.Errorf("Expected empty body, got %s", ctx.Response.Body())
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}
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}
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// TestGetNetConn 测试获取底层连接
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func TestGetNetConn(_ *testing.T) {
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ctx := &fasthttp.RequestCtx{}
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ctx.Init(&fasthttp.Request{}, nil, nil)
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conn := getNetConn(ctx)
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_ = conn
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}
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// TestCopyFile_Error 测试 copyFile 错误情况
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func TestCopyFile_Error(t *testing.T) {
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tmpDir := t.TempDir()
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tmpFile := filepath.Join(tmpDir, "test.txt")
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content := []byte("test content")
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if err := os.WriteFile(tmpFile, content, 0o644); err != nil {
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t.Fatalf("Failed to create temp file: %v", err)
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}
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file, err := os.Open(tmpFile)
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if err != nil {
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t.Fatalf("Failed to open file: %v", err)
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}
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defer func() { _ = file.Close() }()
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ctx := &fasthttp.RequestCtx{}
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ctx.Init(&fasthttp.Request{}, nil, nil)
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err = copyFile(ctx, file, 1000, 10)
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if err == nil {
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t.Error("Expected error for offset beyond file size")
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}
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}
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// TestLinuxSendfile_NilConn 测试 linuxSendfile 空连接
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func TestLinuxSendfile_NilConn(t *testing.T) {
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tmpDir := t.TempDir()
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tmpFile := filepath.Join(tmpDir, "test.txt")
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content := []byte("test")
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_ = os.WriteFile(tmpFile, content, 0o644)
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file, err := os.Open(tmpFile)
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if err != nil {
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t.Fatalf("Failed to open file: %v", err)
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}
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defer func() { _ = file.Close() }()
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err = linuxSendfile(nil, file.Fd(), 0, int64(len(content)))
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if err == nil {
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t.Error("Expected error for nil connection")
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}
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}
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