Files

816 lines
24 KiB
Go

//go:build !windows
package main
import (
"encoding/json"
"strings"
"testing"
)
// TestHandleRequest tests the request validation logic.
// Note: Command execution tests are not included here since apk is not available
// in unit test environments. Integration tests would handle actual execution.
func TestHandleRequest(t *testing.T) {
// Mock runApkFunc to avoid running actual commands or triggering sudo
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
tests := []struct {
name string
req request
wantValidErr bool
errContains string
}{
// Validation error cases
{
name: "missing package",
req: request{Action: "install", Package: ""},
wantValidErr: true,
errContains: "package required",
},
{
name: "invalid package name (starts with hyphen)",
req: request{Action: "install", Package: "-malicious"},
wantValidErr: true,
errContains: "invalid package name",
},
{
name: "invalid package name (contains semicolon)",
req: request{Action: "install", Package: "pkg; rm -rf"},
wantValidErr: true,
errContains: "invalid package name",
},
{
name: "invalid package name (contains space)",
req: request{Action: "install", Package: "pkg name"},
wantValidErr: true,
errContains: "invalid package name",
},
{
name: "unknown action",
req: request{Action: "unknown", Package: "curl"},
wantValidErr: true,
errContains: "unknown action",
},
// Validation pass cases (may fail at exec stage, but validation passes)
{
name: "valid install",
req: request{Action: "install", Package: "curl"},
wantValidErr: false,
errContains: "", // Validation passed (no validation error)
},
{
name: "valid uninstall",
req: request{Action: "uninstall", Package: "git"},
wantValidErr: false,
errContains: "",
},
{
name: "valid scoped npm package",
req: request{Action: "install", Package: "@scope/pkg"},
wantValidErr: false,
errContains: "",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
resp := handleRequest(tt.req)
hasValidationErr := contains(resp.Error, "package required") ||
contains(resp.Error, "invalid package name") ||
contains(resp.Error, "unknown action")
if hasValidationErr != tt.wantValidErr {
t.Errorf("validation error = %v, want %v (error: %q)", hasValidationErr, tt.wantValidErr, resp.Error)
}
if tt.wantValidErr && tt.errContains != "" && !contains(resp.Error, tt.errContains) {
t.Errorf("error = %q, want to contain %q", resp.Error, tt.errContains)
}
})
}
}
// contains checks if a string contains a substring.
func contains(s, substr string) bool {
for i := 0; i+len(substr) <= len(s); i++ {
if s[i:i+len(substr)] == substr {
return true
}
}
return false
}
// TestValidPkgName tests the package name validation regex.
func TestValidPkgName(t *testing.T) {
tests := []struct {
name string
valid bool
}{
// Valid package names
{"github-cli", true},
{"curl", true},
{"python3", true},
{"my_package", true},
{"package.name", true},
{"c++", true},
{"@scope/pkg", true},
{"pkg123", true},
{"a", true},
{"A", true},
{"0abc", true}, // can start with number
{"abc123def", true},
{"pkg-with-hyphens", true},
{"pkg_with_underscores", true},
{"pkg.with.dots", true},
// Invalid package names
{"-invalid", false}, // starts with hyphen
{"--flag", false}, // starts with hyphen
{"pkg name", false}, // contains space
{"pkg;cmd", false}, // contains semicolon
{"pkg|cmd", false}, // contains pipe
{"pkg&cmd", false}, // contains ampersand
{"pkg`cmd`", false}, // contains backtick
{"pkg$var", false}, // contains dollar sign
{"pkg<file", false}, // contains angle bracket
{"pkg>file", false}, // contains angle bracket
{"pkg'quote", false}, // contains quote
{"pkg\"quote", false}, // contains quote
{"pkg(paren)", false}, // contains parens
{"", false}, // empty
{" curl", false}, // starts with space
{"curl ", false}, // ends with space
{"--index-url=evil", false}, // flag pattern
{"-u", false}, // short flag
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := validPkgName.MatchString(tt.name)
if got != tt.valid {
t.Errorf("validPkgName.MatchString(%q) = %v, want %v", tt.name, got, tt.valid)
}
})
}
}
// TestHandleRequest_AllActionsValidated tests both install and uninstall actions.
func TestHandleRequest_AllActionsValidated(t *testing.T) {
// Mock runApkFunc to avoid running actual commands or triggering sudo
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
tests := []struct {
action string
}{
{"install"},
{"uninstall"},
}
for _, tt := range tests {
t.Run(tt.action, func(t *testing.T) {
resp := handleRequest(request{
Action: tt.action,
Package: "valid-package",
})
// Validation should pass (no "invalid package" or "package required" error)
if contains(resp.Error, "package required") || contains(resp.Error, "invalid package name") {
t.Errorf("action %q validation failed: %q", tt.action, resp.Error)
}
})
}
}
// TestHandleRequest_EmptyActionFails tests that empty action is rejected.
func TestHandleRequest_EmptyActionFails(t *testing.T) {
resp := handleRequest(request{
Action: "",
Package: "curl",
})
if resp.Error == "" {
t.Error("empty action should fail validation")
}
if !contains(resp.Error, "unknown action") {
t.Errorf("error = %q, want to contain 'unknown action'", resp.Error)
}
}
// TestHandleRequest_PackageValidationCatchesInjection tests shell injection attempts.
func TestHandleRequest_PackageValidationCatchesInjection(t *testing.T) {
injections := []string{
"-malicious",
"pkg; rm -rf /",
"pkg && evil",
"pkg || evil",
"pkg | evil",
"pkg`evil`",
"pkg$(evil)",
"pkg\nevil",
"--allow-untrusted",
"--key=value",
}
for _, inj := range injections {
t.Run(inj, func(t *testing.T) {
resp := handleRequest(request{
Action: "install",
Package: inj,
})
if resp.OK || resp.Error == "" {
t.Errorf("injection %q should be rejected, got OK=%v err=%q", inj, resp.OK, resp.Error)
}
})
}
}
// TestRequest_JSON tests request struct JSON unmarshaling.
func TestRequest_JSON(t *testing.T) {
tests := []struct {
name string
json string
want request
wantErr bool
}{
{
name: "valid request",
json: `{"action":"install","package":"curl"}`,
want: request{Action: "install", Package: "curl"},
wantErr: false,
},
{
name: "empty action",
json: `{"action":"","package":"curl"}`,
want: request{Action: "", Package: "curl"},
wantErr: false, // JSON parsing succeeds, validation fails later
},
{
name: "empty package",
json: `{"action":"install","package":""}`,
want: request{Action: "install", Package: ""},
wantErr: false, // JSON parsing succeeds, validation fails later
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var req request
err := unmarshalRequest(tt.json, &req)
if (err != nil) != tt.wantErr {
t.Errorf("unmarshalRequest() error = %v, wantErr %v", err, tt.wantErr)
}
if !tt.wantErr && (req.Action != tt.want.Action || req.Package != tt.want.Package) {
t.Errorf("unmarshalRequest() = %+v, want %+v", req, tt.want)
}
})
}
}
// unmarshalRequest is a helper for testing JSON unmarshaling.
func unmarshalRequest(jsonStr string, req *request) error {
return json.Unmarshal([]byte(jsonStr), req)
}
// TestResponse_JSON tests response struct JSON marshaling.
func TestResponse_JSON(t *testing.T) {
tests := []struct {
name string
resp response
wantOK bool
wantErr string
omitErr bool
}{
{
name: "success response",
resp: response{OK: true},
wantOK: true,
wantErr: "",
omitErr: true,
},
{
name: "error response",
resp: response{OK: false, Error: "package not found"},
wantOK: false,
wantErr: "package not found",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
data, err := marshalResponse(tt.resp)
if err != nil {
t.Fatalf("marshal failed: %v", err)
}
var decoded response
if err := unmarshalResponse(data, &decoded); err != nil {
t.Fatalf("unmarshal failed: %v", err)
}
if decoded.OK != tt.wantOK {
t.Errorf("OK = %v, want %v", decoded.OK, tt.wantOK)
}
if decoded.Error != tt.wantErr {
t.Errorf("Error = %q, want %q", decoded.Error, tt.wantErr)
}
})
}
}
// marshalResponse marshals a response (for testing).
func marshalResponse(resp response) ([]byte, error) {
return json.Marshal(resp)
}
// unmarshalResponse unmarshals a response (for testing).
func unmarshalResponse(data []byte, resp *response) error {
return json.Unmarshal(data, resp)
}
// TestValidPkgNameRegex_Compliance tests compliance with validation rules.
func TestValidPkgNameRegex_Compliance(t *testing.T) {
// Test that regex enforces security constraints
tests := []struct {
name string
isValid bool
riskLevel string
}{
// Safe names
{"curl", true, ""},
{"github-cli", true, ""},
{"python3", true, ""},
{"@scope/pkg", true, ""},
// Attack patterns that MUST be rejected
{"-flag", false, "flag injection"},
{"--option=value", false, "option injection"},
{"pkg; cmd", false, "command injection"},
{"pkg && cmd", false, "command injection"},
{"pkg || cmd", false, "command injection"},
{"pkg | cmd", false, "pipe injection"},
{"pkg`cmd`", false, "command substitution"},
{"pkg$(cmd)", false, "command substitution"},
{"pkg${var}", false, "variable injection"},
{"pkg'x'", false, "quote breaking"},
{"pkg\"x\"", false, "quote breaking"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := validPkgName.MatchString(tt.name)
if got != tt.isValid {
t.Errorf("validPkgName.MatchString(%q) = %v, want %v (risk: %s)", tt.name, got, tt.isValid, tt.riskLevel)
}
})
}
}
// TestHandleRequest_ErrorMessages tests that error messages are clear.
func TestHandleRequest_ErrorMessages(t *testing.T) {
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
tests := []struct {
name string
req request
wantErrText string
}{
{
name: "missing package error text",
req: request{Action: "install", Package: ""},
wantErrText: "package required",
},
{
name: "invalid package error text",
req: request{Action: "install", Package: "-bad"},
wantErrText: "invalid package name",
},
{
name: "unknown action error text",
req: request{Action: "rebuild", Package: "curl"},
wantErrText: "unknown action",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
resp := handleRequest(tt.req)
if resp.Error == "" {
t.Errorf("handleRequest() error = empty, want %q", tt.wantErrText)
}
if !contains(resp.Error, tt.wantErrText) {
t.Errorf("handleRequest() error = %q, want to contain %q", resp.Error, tt.wantErrText)
}
})
}
}
// TestHandleRequest_SuccessPath tests that valid requests pass validation.
// Note: Actual apk command execution will fail in test environment (no apk available),
// but validation should pass.
func TestHandleRequest_SuccessPath(t *testing.T) {
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
tests := []struct {
action string
pkg string
}{
{"install", "curl"},
{"uninstall", "git"},
{"install", "github-cli"},
{"uninstall", "openssl"},
}
for _, tt := range tests {
t.Run(tt.action+"-"+tt.pkg, func(t *testing.T) {
resp := handleRequest(request{
Action: tt.action,
Package: tt.pkg,
})
// Should not fail validation (may fail at exec stage without real apk)
// We're testing that validation logic passes, not that apk exists
validationErrors := []string{"package required", "invalid package name", "unknown action"}
for _, validErr := range validationErrors {
if contains(resp.Error, validErr) {
t.Errorf("handleRequest(%q, %q) failed validation: %q", tt.action, tt.pkg, resp.Error)
}
}
})
}
}
// ── v2 tests ─────────────────────────────────────────────────────────────────
// TestHandleRequest_UpgradeValidation verifies that the upgrade action uses
// the stricter validApkName regex (lowercase only, no @, no /).
func TestHandleRequest_UpgradeValidation(t *testing.T) {
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
// Valid names for upgrade (lowercase apk grammar)
valid := []string{
"curl",
"libstdc++",
"gtk+3.0",
"ca-certificates",
"py3-pip",
}
for _, pkg := range valid {
t.Run("valid/"+pkg, func(t *testing.T) {
resp := handleRequest(request{Action: "upgrade", Package: pkg})
// Must pass validation (may fail at apk exec stage — that's OK in unit test)
if contains(resp.Error, "package required") || contains(resp.Error, "invalid package name") {
t.Errorf("upgrade %q should pass validation, got: %q", pkg, resp.Error)
}
if resp.Code == "validation" {
t.Errorf("upgrade %q got validation code unexpectedly", pkg)
}
})
}
}
// TestHandleRequest_UpgradeInjectionPatterns verifies 5 injection patterns are rejected.
func TestHandleRequest_UpgradeInjectionPatterns(t *testing.T) {
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
injections := []string{
"-malicious", // leading hyphen
"pkg;evil", // semicolon
"pkg evil", // space
"@edge/curl", // @ prefix (legacy npm compat — rejected by validApkName)
"UPPERCASE_PKG", // uppercase rejected by validApkName
}
for _, pkg := range injections {
t.Run(pkg, func(t *testing.T) {
resp := handleRequest(request{Action: "upgrade", Package: pkg})
if resp.OK {
t.Errorf("upgrade %q should be rejected but got OK=true", pkg)
}
if resp.Code != "validation" {
t.Errorf("upgrade %q: want Code=validation, got %q (error=%q)", pkg, resp.Code, resp.Error)
}
})
}
}
// TestHandleRequest_UpgradeRejectsLegacySymbols verifies that pkg@edge (accepted
// by legacy validPkgName for install/uninstall) is REJECTED by upgrade action
// via the stricter validApkName.
func TestHandleRequest_UpgradeRejectsLegacySymbols(t *testing.T) {
origRunApkFunc := runApkFunc
runApkFunc = func(args ...string) ([]byte, error) {
return []byte("mock output"), nil
}
defer func() { runApkFunc = origRunApkFunc }()
legacySymbols := []string{
"pkg@edge", // @ accepted by validPkgName, rejected by validApkName
"@scope/pkg", // npm scoped — rejected by validApkName
}
for _, pkg := range legacySymbols {
t.Run(pkg, func(t *testing.T) {
// Confirm install/uninstall ACCEPTS it (legacy compat)
installResp := handleRequest(request{Action: "install", Package: pkg})
if contains(installResp.Error, "invalid package name") {
t.Errorf("install %q should pass validPkgName validation, got %q", pkg, installResp.Error)
}
// Confirm upgrade REJECTS it (strict apk grammar)
upgradeResp := handleRequest(request{Action: "upgrade", Package: pkg})
if upgradeResp.Code != "validation" {
t.Errorf("upgrade %q: want Code=validation, got Code=%q error=%q", pkg, upgradeResp.Code, upgradeResp.Error)
}
})
}
}
// TestHandleRequest_UpdateIndexRejectsPackage verifies update-index rejects non-empty package.
func TestHandleRequest_UpdateIndexRejectsPackage(t *testing.T) {
resp := handleRequest(request{Action: "update-index", Package: "curl"})
if resp.OK {
t.Error("update-index with package should not return OK=true")
}
if resp.Code != "validation" {
t.Errorf("want Code=validation, got %q", resp.Code)
}
if !contains(resp.Error, "update-index takes no package") {
t.Errorf("error = %q, want to contain 'update-index takes no package'", resp.Error)
}
}
// TestHandleRequest_ListOutdatedRejectsPackage verifies list-outdated rejects non-empty package.
func TestHandleRequest_ListOutdatedRejectsPackage(t *testing.T) {
resp := handleRequest(request{Action: "list-outdated", Package: "curl"})
if resp.OK {
t.Error("list-outdated with package should not return OK=true")
}
if resp.Code != "validation" {
t.Errorf("want Code=validation, got %q", resp.Code)
}
if !contains(resp.Error, "list-outdated takes no package") {
t.Errorf("error = %q, want to contain 'list-outdated takes no package'", resp.Error)
}
}
// TestHandleRequest_UpdateIndexNoPackage verifies update-index passes validation with empty package.
func TestHandleRequest_UpdateIndexNoPackage(t *testing.T) {
resp := handleRequest(request{Action: "update-index", Package: ""})
// Validation passes — will fail at apk exec in unit test env, but NOT with Code="validation"
if resp.Code == "validation" {
t.Errorf("update-index with empty package should pass validation, got Code=validation error=%q", resp.Error)
}
}
// TestHandleRequest_ListOutdatedNoPackage verifies list-outdated passes validation with empty package.
func TestHandleRequest_ListOutdatedNoPackage(t *testing.T) {
resp := handleRequest(request{Action: "list-outdated", Package: ""})
if resp.Code == "validation" {
t.Errorf("list-outdated with empty package should pass validation, got Code=validation error=%q", resp.Error)
}
}
// TestHandleRequest_InvalidActionReturnsValidationCode verifies unknown actions
// get Code="validation" in the v2 response.
func TestHandleRequest_InvalidActionReturnsValidationCode(t *testing.T) {
resp := handleRequest(request{Action: "nuke", Package: "curl"})
if resp.Code != "validation" {
t.Errorf("unknown action: want Code=validation, got %q", resp.Code)
}
if !contains(resp.Error, "unknown action") {
t.Errorf("error = %q, want to contain 'unknown action'", resp.Error)
}
}
// TestHandleRequest_InvalidJSONCodeValidation verifies malformed JSON sets Code="validation".
// We test via handleConn indirectly by confirming the inline code path.
func TestHandleRequest_InvalidJsonGetsValidationCode(t *testing.T) {
// This tests the inline json error path in handleConn — we verify the
// response struct used there has Code="validation".
errResp := response{Error: "invalid json", Code: "validation"}
if errResp.Code != "validation" {
t.Errorf("invalid json response Code = %q, want 'validation'", errResp.Code)
}
}
// TestClassifyApkOutput covers all 7 code branches.
func TestClassifyApkOutput(t *testing.T) {
fakeErr := &fakeError{"exit status 1"}
tests := []struct {
name string
out string
wantCode string
}{
{
name: "locked database",
out: "ERROR: unable to lock database: Permission denied",
wantCode: "locked",
},
{
name: "permission denied (not lock-related)",
out: "ERROR: Permission denied while writing",
wantCode: "permission",
},
{
name: "disk full",
out: "ERROR: No space left on device",
wantCode: "disk_full",
},
{
name: "not found (unsatisfiable)",
out: "ERROR: unsatisfiable constraints: nonexistent-pkg (missing)",
wantCode: "not_found",
},
{
name: "conflict (breaks world)",
out: "ERROR: unsatisfiable constraints: foo-1.0 breaks: world[foo=2.0]",
wantCode: "conflict",
},
{
name: "network error",
out: "ERROR: unable to fetch https://dl-cdn.alpinelinux.org/: connection refused",
wantCode: "network",
},
{
name: "system error (default)",
out: "ERROR: something completely unknown went wrong",
wantCode: "system_error",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, code := classifyApkOutput(tt.out, fakeErr)
if code != tt.wantCode {
t.Errorf("classifyApkOutput(%q) code = %q, want %q", tt.out, code, tt.wantCode)
}
})
}
}
// fakeError implements the error interface for testing classifyApkOutput.
type fakeError struct{ msg string }
func (e *fakeError) Error() string { return e.msg }
// TestClassifyApkOutput_EmptyOutputFallsBackToErrMsg verifies that when output
// is blank, the error message from err.Error() is used.
func TestClassifyApkOutput_EmptyOutputFallsBackToErrMsg(t *testing.T) {
msg, code := classifyApkOutput("", &fakeError{"apk: something failed"})
if msg != "apk: something failed" {
t.Errorf("msg = %q, want 'apk: something failed'", msg)
}
if code != "system_error" {
t.Errorf("code = %q, want 'system_error'", code)
}
}
// TestClassifyApkOutput_TruncatesLongOutput verifies messages >500 chars are truncated.
func TestClassifyApkOutput_TruncatesLongOutput(t *testing.T) {
longOut := strings.Repeat("x", 600)
msg, _ := classifyApkOutput(longOut, &fakeError{"err"})
if len([]rune(msg)) > 502 { // 500 + "…" (multi-byte)
t.Errorf("msg length = %d runes, want ≤502", len([]rune(msg)))
}
if !strings.HasSuffix(msg, "…") {
t.Error("truncated msg should end with ellipsis")
}
}
// TestResponseJSONShape verifies Code + Data fields survive marshal/unmarshal
// and that omitempty suppresses empty fields.
func TestResponseJSONShape(t *testing.T) {
t.Run("code and data present", func(t *testing.T) {
r := response{OK: false, Error: "x", Code: "conflict", Data: ""}
data, err := json.Marshal(r)
if err != nil {
t.Fatalf("marshal: %v", err)
}
s := string(data)
if !contains(s, `"code":"conflict"`) {
t.Errorf("json %q missing code field", s)
}
// Data is empty string — omitempty should suppress it.
if contains(s, `"data"`) {
t.Errorf("json %q should NOT contain data field when empty (omitempty)", s)
}
})
t.Run("data field present when non-empty", func(t *testing.T) {
r := response{OK: true, Data: "curl 7.88\n"}
data, err := json.Marshal(r)
if err != nil {
t.Fatalf("marshal: %v", err)
}
s := string(data)
if !contains(s, `"data"`) {
t.Errorf("json %q missing data field", s)
}
})
t.Run("omitempty suppresses error and code on OK response", func(t *testing.T) {
r := response{OK: true}
data, err := json.Marshal(r)
if err != nil {
t.Fatalf("marshal: %v", err)
}
s := string(data)
if contains(s, `"error"`) {
t.Errorf("json %q should NOT contain error field (omitempty)", s)
}
if contains(s, `"code"`) {
t.Errorf("json %q should NOT contain code field (omitempty)", s)
}
})
}
// TestValidApkName tests the strict apk package name validator.
func TestValidApkName(t *testing.T) {
tests := []struct {
name string
valid bool
}{
// Valid apk names
{"curl", true},
{"libstdc++", true},
{"gtk+3.0", true},
{"ca-certificates", true},
{"py3-pip", true},
{"0launch", true}, // starts with digit — valid per apk grammar
// Invalid: uppercase
{"CURL", false},
{"OpenSSL", false},
// Invalid: @ prefix (npm compat — rejected by validApkName)
{"@scope/pkg", false},
// Invalid: slash
{"alpine/curl", false},
// Invalid: leading hyphen
{"-pkg", false},
// Invalid: spaces/metacharacters
{"pkg name", false},
{"pkg;evil", false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := validApkName.MatchString(tt.name)
if got != tt.valid {
t.Errorf("validApkName.MatchString(%q) = %v, want %v", tt.name, got, tt.valid)
}
})
}
}
// TestApkMutex_SerializesConcurrentUpgrades verifies that concurrent upgrade
// validation calls do not race on the response struct or the mutex itself.
// Note: actual apk execution is absent in unit tests; we exercise dispatch only.
func TestApkMutex_SerializesConcurrentUpgrades(t *testing.T) {
const goroutines = 10
results := make(chan response, goroutines)
for i := 0; i < goroutines; i++ {
go func() {
// All pass validation; execution fails (no apk binary) — that's OK.
results <- handleRequest(request{Action: "upgrade", Package: "curl"})
}()
}
for i := 0; i < goroutines; i++ {
resp := <-results
// Must NOT be a validation error — the package name is valid.
if resp.Code == "validation" {
t.Errorf("concurrent upgrade got unexpected validation error: %q", resp.Error)
}
}
}