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//
// IPAddressRangeTests.swift
// MullvadRustRuntimeTests
//
// Copyright © 2026 Mullvad VPN AB. All rights reserved.
//
import MullvadTypes
import Network
import XCTest
final class IPAddressRangeTests: XCTestCase {
// MARK: - IPv4 String Parsing
func testParseIPv4WithPrefix() {
let range = IPAddressRange(from: "192.168.1.0/24")
XCTAssertNotNil(range)
XCTAssertEqual("\(range!.address)", "192.168.1.0")
XCTAssertEqual(range!.networkPrefixLength, 24)
}
func testParseIPv4WithoutPrefix() {
let range = IPAddressRange(from: "10.0.0.1")
XCTAssertNotNil(range)
XCTAssertEqual("\(range!.address)", "10.0.0.1")
XCTAssertEqual(range!.networkPrefixLength, 32)
}
func testParseIPv4DefaultRoute() {
let range = IPAddressRange(from: "0.0.0.0/0")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 0)
}
func testParseIPv4FullMask() {
let range = IPAddressRange(from: "255.255.255.255/32")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 32)
}
func testParseIPv4PrefixClampedToMax() {
let range = IPAddressRange(from: "192.168.1.1/33")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 32)
}
func testParseInvalidString() {
XCTAssertNil(IPAddressRange(from: "invalid"))
}
func testParseTrailingSlash() {
XCTAssertNil(IPAddressRange(from: "192.168.1.1/"))
}
func testParseEmptyString() {
XCTAssertNil(IPAddressRange(from: ""))
}
// MARK: - IPv6 String Parsing
func testParseIPv6WithPrefix() {
let range = IPAddressRange(from: "::ff/64")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 64)
}
func testParseIPv6WithoutPrefix() {
let range = IPAddressRange(from: "::1")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 128)
}
func testParseIPv6DefaultRoute() {
let range = IPAddressRange(from: "::/0")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 0)
}
func testParseIPv6FullAddress() {
let range = IPAddressRange(from: "fe80::1/128")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 128)
}
func testParseIPv6PrefixClampedToMax() {
let range = IPAddressRange(from: "::1/129")
XCTAssertNotNil(range)
XCTAssertEqual(range!.networkPrefixLength, 128)
}
// MARK: - String Representation Roundtrip
func testStringRepresentationRoundtripIPv4() {
let original = "192.168.1.0/24"
let range = IPAddressRange(from: original)!
XCTAssertEqual(range.description, original)
}
func testStringRepresentationRoundtripIPv6() {
let range = IPAddressRange(from: "::/0")!
XCTAssertEqual(range.description, "::/0")
}
// MARK: - Subnet Mask IPv4
func testSubnetMaskIPv4Zero() {
let range = IPAddressRange(from: "0.0.0.0/0")!
XCTAssertEqual("\(range.subnetMask())", "0.0.0.0")
}
func testSubnetMaskIPv4Slash8() {
let range = IPAddressRange(from: "10.0.0.0/8")!
XCTAssertEqual("\(range.subnetMask())", "255.0.0.0")
}
func testSubnetMaskIPv4Slash24() {
let range = IPAddressRange(from: "192.168.1.0/24")!
XCTAssertEqual("\(range.subnetMask())", "255.255.255.0")
}
func testSubnetMaskIPv4Slash32() {
let range = IPAddressRange(from: "192.168.1.1/32")!
XCTAssertEqual("\(range.subnetMask())", "255.255.255.255")
}
// MARK: - Subnet Mask IPv6
func testSubnetMaskIPv6Zero() {
let range = IPAddressRange(from: "::/0")!
let mask = range.subnetMask()
XCTAssertEqual(mask.rawValue, Data(repeating: 0, count: 16))
}
func testSubnetMaskIPv6Slash64() {
let range = IPAddressRange(from: "::1/64")!
let mask = range.subnetMask()
var expected = Data(repeating: 0xff, count: 8)
expected.append(Data(repeating: 0, count: 8))
XCTAssertEqual(mask.rawValue, expected)
}
func testSubnetMaskIPv6Slash128() {
let range = IPAddressRange(from: "::1/128")!
let mask = range.subnetMask()
XCTAssertEqual(mask.rawValue, Data(repeating: 0xff, count: 16))
}
// MARK: - Masked Address
func testMaskedAddressIPv4() {
let range = IPAddressRange(from: "192.168.1.100/24")!
XCTAssertEqual("\(range.maskedAddress())", "192.168.1.0")
}
func testMaskedAddressIPv4Slash8() {
let range = IPAddressRange(from: "10.20.30.40/8")!
XCTAssertEqual("\(range.maskedAddress())", "10.0.0.0")
}
// MARK: - Codable
func testCodableRoundtrip() throws {
let range = IPAddressRange(from: "10.64.0.1/32")!
let encoder = JSONEncoder()
let data = try encoder.encode(range)
let decoded = try JSONDecoder().decode(IPAddressRange.self, from: data)
XCTAssertEqual(range, decoded)
}
func testDecodeSingleStringValue() throws {
let json = "\"10.64.0.1/32\""
let data = json.data(using: .utf8)!
let decoded = try JSONDecoder().decode(IPAddressRange.self, from: data)
XCTAssertEqual("\(decoded.address)", "10.64.0.1")
XCTAssertEqual(decoded.networkPrefixLength, 32)
}
func testDecodeIPv6SingleStringValue() throws {
let json = "\"::ff/64\""
let data = json.data(using: .utf8)!
let decoded = try JSONDecoder().decode(IPAddressRange.self, from: data)
XCTAssertEqual(decoded.networkPrefixLength, 64)
}
func testDecodeInvalidStringThrows() {
let json = "\"not-an-ip\""
let data = json.data(using: .utf8)!
XCTAssertThrowsError(try JSONDecoder().decode(IPAddressRange.self, from: data))
}
func testEncodesAsSingleString() throws {
let range = IPAddressRange(from: "192.168.1.0/24")!
let data = try JSONEncoder().encode(range)
let string = String(data: data, encoding: .utf8)!
XCTAssertEqual(string, "\"192.168.1.0/24\"")
}
// MARK: - Equatable / Hashable
func testEqualRanges() {
let a = IPAddressRange(from: "10.0.0.1/24")!
let b = IPAddressRange(from: "10.0.0.1/24")!
XCTAssertEqual(a, b)
XCTAssertEqual(a.hashValue, b.hashValue)
}
func testUnequalPrefix() {
let a = IPAddressRange(from: "10.0.0.1/24")!
let b = IPAddressRange(from: "10.0.0.1/32")!
XCTAssertNotEqual(a, b)
}
func testUnequalAddress() {
let a = IPAddressRange(from: "10.0.0.1/24")!
let b = IPAddressRange(from: "10.0.0.2/24")!
XCTAssertNotEqual(a, b)
}
// MARK: - Direct Init
func testDirectInit() {
let range = IPAddressRange(address: .ipv4(IPv4Address("192.168.1.1")!), networkPrefixLength: 24)
XCTAssertEqual("\(range.address)", "192.168.1.1")
XCTAssertEqual(range.networkPrefixLength, 24)
}
}
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