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ConnectionStateMachineTests.swift
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import XCTest
@testable import PostgresNIO
@testable import NIOCore
import NIOPosix
import NIOSSL
class ConnectionStateMachineTests: XCTestCase {
func testStartup() {
let authContext = AuthContext(username: "test", password: "abc123", database: "test")
var state = ConnectionStateMachine(requireBackendKeyData: true)
XCTAssertEqual(state.connected(tls: .disable), .provideAuthenticationContext)
XCTAssertEqual(state.provideAuthenticationContext(authContext), .sendStartupMessage(authContext))
XCTAssertEqual(state.authenticationMessageReceived(.plaintext), .sendPasswordMessage(.cleartext, authContext))
XCTAssertEqual(state.authenticationMessageReceived(.ok), .wait)
}
func testSSLStartupSuccess() {
let authContext = AuthContext(username: "test", password: "abc123", database: "test")
var state = ConnectionStateMachine(requireBackendKeyData: true)
XCTAssertEqual(state.connected(tls: .require), .sendSSLRequest)
XCTAssertEqual(state.sslSupportedReceived(unprocessedBytes: 0), .establishSSLConnection)
XCTAssertEqual(state.sslHandlerAdded(), .wait)
XCTAssertEqual(state.sslEstablished(), .provideAuthenticationContext)
XCTAssertEqual(state.provideAuthenticationContext(authContext), .sendStartupMessage(authContext))
let salt: UInt32 = 0x00_01_02_03
XCTAssertEqual(state.authenticationMessageReceived(.md5(salt: salt)), .sendPasswordMessage(.md5(salt: salt), authContext))
}
func testSSLStartupFailureTooManyBytesRemaining() {
var state = ConnectionStateMachine(requireBackendKeyData: true)
XCTAssertEqual(state.connected(tls: .require), .sendSSLRequest)
let failError = PSQLError.receivedUnencryptedDataAfterSSLRequest
XCTAssertEqual(state.sslSupportedReceived(unprocessedBytes: 1), .closeConnectionAndCleanup(.init(action: .close, tasks: [], error: failError, closePromise: nil)))
}
func testSSLStartupFailHandler() {
struct SSLHandlerAddError: Error, Equatable {}
var state = ConnectionStateMachine(requireBackendKeyData: true)
XCTAssertEqual(state.connected(tls: .require), .sendSSLRequest)
XCTAssertEqual(state.sslSupportedReceived(unprocessedBytes: 0), .establishSSLConnection)
let failError = PSQLError.failedToAddSSLHandler(underlying: SSLHandlerAddError())
XCTAssertEqual(state.errorHappened(failError), .closeConnectionAndCleanup(.init(action: .close, tasks: [], error: failError, closePromise: nil)))
}
func testTLSRequiredStartupSSLUnsupported() {
var state = ConnectionStateMachine(requireBackendKeyData: true)
XCTAssertEqual(state.connected(tls: .require), .sendSSLRequest)
XCTAssertEqual(state.sslUnsupportedReceived(),
.closeConnectionAndCleanup(.init(action: .close, tasks: [], error: PSQLError.sslUnsupported, closePromise: nil)))
}
func testTLSPreferredStartupSSLUnsupported() {
var state = ConnectionStateMachine(requireBackendKeyData: true)
XCTAssertEqual(state.connected(tls: .prefer), .sendSSLRequest)
XCTAssertEqual(state.sslUnsupportedReceived(), .provideAuthenticationContext)
}
func testParameterStatusReceivedAndBackendKeyAfterAuthenticated() {
var state = ConnectionStateMachine(.authenticated(nil, [:]))
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "DateStyle", value: "ISO, MDY")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "application_name", value: "")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "integer_datetimes", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "client_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "TimeZone", value: "Etc/UTC")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "is_superuser", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_version", value: "13.1 (Debian 13.1-1.pgdg100+1)")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "session_authorization", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "IntervalStyle", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "standard_conforming_strings", value: "on")), .wait)
XCTAssertEqual(state.backendKeyDataReceived(.init(processID: 2730, secretKey: 882037977)), .wait)
XCTAssertEqual(state.readyForQueryReceived(.idle), .fireEventReadyForQuery)
}
func testBackendKeyAndParameterStatusReceivedAfterAuthenticated() {
var state = ConnectionStateMachine(.authenticated(nil, [:]))
XCTAssertEqual(state.backendKeyDataReceived(.init(processID: 2730, secretKey: 882037977)), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "DateStyle", value: "ISO, MDY")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "application_name", value: "")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "integer_datetimes", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "client_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "TimeZone", value: "Etc/UTC")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "is_superuser", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_version", value: "13.1 (Debian 13.1-1.pgdg100+1)")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "session_authorization", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "IntervalStyle", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "standard_conforming_strings", value: "on")), .wait)
XCTAssertEqual(state.readyForQueryReceived(.idle), .fireEventReadyForQuery)
}
func testReadyForQueryReceivedWithoutBackendKeyAfterAuthenticated() {
var state = ConnectionStateMachine(.authenticated(nil, [:]), requireBackendKeyData: true)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "DateStyle", value: "ISO, MDY")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "application_name", value: "")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "integer_datetimes", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "client_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "TimeZone", value: "Etc/UTC")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "is_superuser", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_version", value: "13.1 (Debian 13.1-1.pgdg100+1)")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "session_authorization", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "IntervalStyle", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "standard_conforming_strings", value: "on")), .wait)
XCTAssertEqual(state.readyForQueryReceived(.idle),
.closeConnectionAndCleanup(.init(action: .close, tasks: [], error: PSQLError.unexpectedBackendMessage(.readyForQuery(.idle)), closePromise: nil)))
}
func testReadyForQueryReceivedWithoutUnneededBackendKeyAfterAuthenticated() {
var state = ConnectionStateMachine(.authenticated(nil, [:]), requireBackendKeyData: false)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "DateStyle", value: "ISO, MDY")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "application_name", value: "")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "integer_datetimes", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "client_encoding", value: "UTF8")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "TimeZone", value: "Etc/UTC")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "is_superuser", value: "on")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "server_version", value: "13.1 (Debian 13.1-1.pgdg100+1)")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "session_authorization", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "IntervalStyle", value: "postgres")), .wait)
XCTAssertEqual(state.parameterStatusReceived(.init(parameter: "standard_conforming_strings", value: "on")), .wait)
XCTAssertEqual(state.readyForQueryReceived(.idle), .fireEventReadyForQuery)
}
func testErrorIsIgnoredWhenClosingConnection() {
// test ignore unclean shutdown when closing connection
var stateIgnoreChannelError = ConnectionStateMachine(.closing(nil))
XCTAssertEqual(stateIgnoreChannelError.errorHappened(.connectionError(underlying: NIOSSLError.uncleanShutdown)), .wait)
XCTAssertEqual(stateIgnoreChannelError.closed(), .fireChannelInactive)
// test ignore any other error when closing connection
var stateIgnoreErrorMessage = ConnectionStateMachine(.closing(nil))
XCTAssertEqual(stateIgnoreErrorMessage.errorReceived(.init(fields: [:])), .wait)
XCTAssertEqual(stateIgnoreErrorMessage.closed(), .fireChannelInactive)
}
func testFailQueuedQueriesOnAuthenticationFailure() throws {
let eventLoopGroup = MultiThreadedEventLoopGroup(numberOfThreads: 1)
defer { XCTAssertNoThrow(try eventLoopGroup.syncShutdownGracefully()) }
let authContext = AuthContext(username: "test", password: "abc123", database: "test")
let salt: UInt32 = 0x00_01_02_03
let queryPromise = eventLoopGroup.next().makePromise(of: PSQLRowStream.self)
var state = ConnectionStateMachine(requireBackendKeyData: true)
let extendedQueryContext = ExtendedQueryContext(
query: "Select version()",
logger: .psqlTest,
promise: queryPromise)
XCTAssertEqual(state.enqueue(task: .extendedQuery(extendedQueryContext)), .wait)
XCTAssertEqual(state.connected(tls: .disable), .provideAuthenticationContext)
XCTAssertEqual(state.provideAuthenticationContext(authContext), .sendStartupMessage(authContext))
XCTAssertEqual(state.authenticationMessageReceived(.md5(salt: salt)), .sendPasswordMessage(.md5(salt: salt), authContext))
let fields: [PostgresBackendMessage.Field: String] = [
.message: "password authentication failed for user \"postgres\"",
.severity: "FATAL",
.sqlState: "28P01",
.localizedSeverity: "FATAL",
.routine: "auth_failed",
.line: "334",
.file: "auth.c"
]
XCTAssertEqual(state.errorReceived(.init(fields: fields)),
.closeConnectionAndCleanup(.init(action: .close, tasks: [.extendedQuery(extendedQueryContext)], error: .server(.init(fields: fields)), closePromise: nil)))
XCTAssertNil(queryPromise.futureResult._value)
// make sure we don't crash
queryPromise.fail(PSQLError.server(.init(fields: fields)))
}
}