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package distribution // import "github.com/docker/docker/distribution"
import (
"errors"
"strings"
"syscall"
"testing"
"github.com/docker/distribution/registry/api/errcode"
v2 "github.com/docker/distribution/registry/api/v2"
"github.com/docker/distribution/registry/client"
)
var alwaysContinue = []error{
&client.UnexpectedHTTPResponseError{},
// Some errcode.Errors that don't disprove the existence of a V1 image
errcode.Error{Code: errcode.ErrorCodeUnauthorized},
errcode.Error{Code: v2.ErrorCodeManifestUnknown},
errcode.Error{Code: v2.ErrorCodeNameUnknown},
errors.New("some totally unexpected error"),
}
var continueFromMirrorEndpoint = []error{
ImageConfigPullError{},
// Some other errcode.Error that doesn't indicate we should search for a V1 image.
errcode.Error{Code: errcode.ErrorCodeTooManyRequests},
}
var neverContinue = []error{
errors.New(strings.ToLower(syscall.ESRCH.Error())), // No such process
}
func TestContinueOnError_NonMirrorEndpoint(t *testing.T) {
for _, err := range alwaysContinue {
if !continueOnError(err, false) {
t.Errorf("Should continue from non-mirror endpoint: %T: '%s'", err, err.Error())
}
}
for _, err := range continueFromMirrorEndpoint {
if continueOnError(err, false) {
t.Errorf("Should only continue from mirror endpoint: %T: '%s'", err, err.Error())
}
}
}
func TestContinueOnError_MirrorEndpoint(t *testing.T) {
var errs []error
errs = append(errs, alwaysContinue...)
errs = append(errs, continueFromMirrorEndpoint...)
for _, err := range errs {
if !continueOnError(err, true) {
t.Errorf("Should continue from mirror endpoint: %T: '%s'", err, err.Error())
}
}
}
func TestContinueOnError_NeverContinue(t *testing.T) {
for _, isMirrorEndpoint := range []bool{true, false} {
for _, err := range neverContinue {
if continueOnError(err, isMirrorEndpoint) {
t.Errorf("Should never continue: %T: '%s'", err, err.Error())
}
}
}
}
func TestContinueOnError_UnnestsErrors(t *testing.T) {
// ContinueOnError should evaluate nested errcode.Errors.
// Assumes that v2.ErrorCodeNameUnknown is a continueable error code.
err := errcode.Errors{errcode.Error{Code: v2.ErrorCodeNameUnknown}}
if !continueOnError(err, false) {
t.Fatal("ContinueOnError should unnest, base return value on errcode.Errors")
}
// Assumes that errcode.ErrorCodeTooManyRequests is not a V1-fallback indication
err = errcode.Errors{errcode.Error{Code: errcode.ErrorCodeTooManyRequests}}
if continueOnError(err, false) {
t.Fatal("ContinueOnError should unnest, base return value on errcode.Errors")
}
}
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