这个问题是在 Ratpack RequestFixtureSpock 测试的上下文中，用于通过 进行身份验证的 Ratpack 链RatpackPac4j#requireAuth，并对缺少的WWW-Authenticate标头采用解决方法（如本问题的答案中所述）
我遇到的问题是，我发现从（的包装器）#beforeSend获得响应时似乎没有调用它。解决方法取决于此工作，因此我无法对其进行测试。有没有办法在返回的响应上调用？GroovyRequestFixture#handleRequestFixture#handle#beforeSendHandlingResult
例如，此测试用例会因断言存在WWW-Authenticate标头而失败，即使改编自此的代码在实际应用程序中调用时正确插入了标头。被测链是testChain，跳到最后失败的断言：
package whatever
import com.google.inject.Module
import groovy.transform.Canonical
import groovy.transform.CompileDynamic
import groovy.transform.CompileStatic
import org.pac4j.core.profile.jwt.JwtClaims
import org.pac4j.http.client.direct.HeaderClient
import org.pac4j.jwt.config.encryption.EncryptionConfiguration
import org.pac4j.jwt.config.encryption.SecretEncryptionConfiguration
import org.pac4j.jwt.config.signature.SecretSignatureConfiguration
import org.pac4j.jwt.config.signature.SignatureConfiguration
import org.pac4j.jwt.credentials.authenticator.JwtAuthenticator
import org.pac4j.jwt.profile.JwtGenerator
import org.pac4j.jwt.profile.JwtProfile
import ratpack.groovy.handling.GroovyChainAction
import ratpack.groovy.test.handling.GroovyRequestFixture
import ratpack.guice.Guice
import ratpack.http.Response
import ratpack.http.Status
import ratpack.jackson.Jackson
import ratpack.pac4j.RatpackPac4j
import ratpack.registry.Registry
import ratpack.session.SessionModule
import ratpack.test.handling.HandlerExceptionNotThrownException
import ratpack.test.handling.HandlingResult
import spock.lang.Specification
@CompileStatic
class AuthenticatorTest extends Specification {
static byte[] salt = new byte[32] // dummy salt
static SignatureConfiguration signatureConfiguration = new SecretSignatureConfiguration(salt)
static EncryptionConfiguration encryptionConfiguration = new SecretEncryptionConfiguration(salt)
static JwtAuthenticator authenticator = new JwtAuthenticator(signatureConfiguration, encryptionConfiguration)
static JwtGenerator generator = new JwtGenerator(signatureConfiguration, encryptionConfiguration)
static HeaderClient headerClient = new HeaderClient("Authorization", "bearer ", authenticator)
/** A stripped down user class */
@Canonical
static class User {
final String id
}
/** A stripped down user registry class */
@Canonical
static class UserRegistry {
private final Map<String, String> users = [
'joebloggs': 'sekret'
]
User authenticate(String id, String password) {
if (password != null && users[id] == password)
return new User(id)
return null
}
}
/** Generates a JWT token for a given user
*
* @param userId - the name of the user
* @return A JWT token encoded as a string
*/
static String generateToken(String userId) {
JwtProfile profile = new JwtProfile()
profile.id = userId
profile.addAttribute(JwtClaims.ISSUED_AT, new Date())
String token = generator.generate(profile)
token
}
static void trapExceptions(HandlingResult result) {
try {
Throwable t = result.exception(Throwable)
throw t
}
catch (HandlerExceptionNotThrownException ignored) {
}
}
/** Composes a new registry binding the module class passed
* as per SO question https://stackoverflow.com/questions/50814817/how-do-i-mock-a-session-in-ratpack-with-requestfixture
*/
static Registry addModule(Registry registry, Class<? extends Module> module) {
Guice.registry { it.module(module) }.apply(registry)
}
GroovyChainAction testChain = new GroovyChainAction() {
@Override
@CompileDynamic
void execute() throws Exception {
register addModule(registry, SessionModule)
all RatpackPac4j.authenticator(headerClient)
all {
/*
* This is a workaround for an issue in RatpackPac4j v2.0.0, which doesn't
* add the WWW-Authenticate header by itself.
*
* See https://github.com/pac4j/ratpack-pac4j/issues/3
*
* This handler needs to be ahead of any potential causes of 401 statuses
*/
response.beforeSend { Response response ->
if (response.status.code == 401) {
response.headers.set('WWW-Authenticate', 'bearer realm="authenticated api"')
}
}
next()
}
post('login') { UserRegistry users ->
parse(Jackson.fromJson(Map)).then { Map data ->
// Validate the credentials
String id = data.user
String password = data.password
User user = users.authenticate(id, password)
if (user == null) {
clientError(401) // Bad authentication credentials
} else {
response.contentType('text/plain')
// Authenticates ok. Issue a JWT token to the client which embeds (signed, encrypted)
// certain standardised metadata of our choice that the JWT validation will use.
String token = generateToken(user.id)
render token
}
}
}
get('unprotected') {
render "hello"
}
// All subsequent paths require authentication
all RatpackPac4j.requireAuth(HeaderClient)
get('protected') {
render "hello"
}
notFound()
}
}
@CompileDynamic
def "should be denied protected path, unauthorised..."() {
given:
def result = GroovyRequestFixture.handle(testChain) {
uri 'protected'
method 'GET'
}
expect:
result.status == Status.of(401) // Unauthorized
// THIS FAILS BECAUSE Response#beforeSend WASN'T INVOKED BY GroovyRequestFixture
result.headers['WWW-Authenticate'] == 'bearer realm="authenticated api"'
// If the server threw, rethrow that
trapExceptions(result)
}
}