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//
// ObfuscationMethodSelectorTests.swift
// MullvadVPN
//
// Created by Jon Petersson on 2024-11-05.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import MullvadSettings
import XCTest
@testable import MullvadREST
class ObfuscationMethodSelectorTests: XCTestCase {
var tunnelSettings = LatestTunnelSettings()
func testMethodSelectionIsOff() throws {
(UInt(0)...10).forEach { attempt in
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .off)
var method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
XCTAssertEqual(method, .off)
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .automatic)
method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
if attempt.isOrdered(nth: 1, forEverySetOf: 4) {
XCTAssertEqual(method, .off)
} else {
XCTAssertNotEqual(method, .off)
}
}
}
func testMethodSelectionIsShadowsock() throws {
(UInt(0)...10).forEach { attempt in
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .shadowsocks)
var method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
XCTAssertEqual(method, .shadowsocks)
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .automatic)
method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
if attempt.isOrdered(nth: 2, forEverySetOf: 4) {
XCTAssertEqual(method, .shadowsocks)
} else {
XCTAssertNotEqual(method, .shadowsocks)
}
}
}
func testMethodSelectionQuic() throws {
(UInt(0)...10).forEach { attempt in
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .quic)
var method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
XCTAssertEqual(method, .quic)
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .automatic)
method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
if attempt.isOrdered(nth: 3, forEverySetOf: 4) {
XCTAssertEqual(method, .quic)
} else {
XCTAssertNotEqual(method, .quic)
}
}
}
func testMethodSelectionUdpOverTcp() throws {
(UInt(0)...10).forEach { attempt in
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .udpOverTcp)
var method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
XCTAssertEqual(method, .udpOverTcp)
tunnelSettings.wireGuardObfuscation = WireGuardObfuscationSettings(state: .automatic)
method = ObfuscationMethodSelector.obfuscationMethodBy(
connectionAttemptCount: attempt,
tunnelSettings: tunnelSettings, obfuscationBypass: IdentityObfuscationProvider()
)
if attempt.isOrdered(nth: 4, forEverySetOf: 4) {
XCTAssertEqual(method, .udpOverTcp)
} else {
XCTAssertNotEqual(method, .udpOverTcp)
}
}
}
}
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