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TestNSData.swift
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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016, 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
import XCTest
@testable import Foundation
#if canImport(Android)
import Android
#endif
class TestNSData: XCTestCase {
class AllOnesImmutableData : NSData {
private var _length : Int
var _pointer : UnsafeMutableBufferPointer<UInt8>? {
willSet {
if let p = _pointer { free(p.baseAddress) }
}
}
init(length: Int) {
_length = length
super.init()
}
required init?(coder aDecoder: NSCoder) {
// Not tested
fatalError()
}
deinit {
if let p = _pointer {
free(p.baseAddress)
}
}
override var length : Int {
get {
return _length
}
}
override var bytes : UnsafeRawPointer {
if let d = _pointer {
return UnsafeRawPointer(d.baseAddress!)
} else {
// Need to allocate the buffer now.
// It doesn't matter if the buffer is uniquely referenced or not here.
let buffer = malloc(length)
memset(buffer!, 1, length)
let bytePtr = buffer!.bindMemory(to: UInt8.self, capacity: length)
let result = UnsafeMutableBufferPointer(start: bytePtr, count: length)
_pointer = result
return UnsafeRawPointer(result.baseAddress!)
}
}
override func getBytes(_ buffer: UnsafeMutableRawPointer, length: Int) {
if let d = _pointer {
// Get the real data from the buffer
memmove(buffer, d.baseAddress!, length)
} else {
// A more efficient implementation of getBytes in the case where no one has asked for our backing bytes
memset(buffer, 1, length)
}
}
}
class AllOnesData : NSMutableData {
private var _length : Int
var _pointer : UnsafeMutableBufferPointer<UInt8>? {
willSet {
if let p = _pointer { free(p.baseAddress) }
}
}
override init(length: Int) {
_length = length
super.init()
}
required init?(coder aDecoder: NSCoder) {
// Not tested
fatalError()
}
deinit {
if let p = _pointer {
free(p.baseAddress)
}
}
override var length : Int {
get {
return _length
}
set {
if let ptr = _pointer {
// Copy the data to our new length buffer
let newBuffer = malloc(newValue)!
if newValue <= _length {
memmove(newBuffer, ptr.baseAddress!, newValue)
} else if newValue > _length {
memmove(newBuffer, ptr.baseAddress!, _length)
memset(newBuffer + _length, 1, newValue - _length)
}
let bytePtr = newBuffer.bindMemory(to: UInt8.self, capacity: newValue)
_pointer = UnsafeMutableBufferPointer(start: bytePtr, count: newValue)
}
_length = newValue
}
}
override var bytes : UnsafeRawPointer {
if let d = _pointer {
return UnsafeRawPointer(d.baseAddress!)
} else {
// Need to allocate the buffer now.
// It doesn't matter if the buffer is uniquely referenced or not here.
let buffer = malloc(length)
memset(buffer!, 1, length)
let bytePtr = buffer!.bindMemory(to: UInt8.self, capacity: length)
let result = UnsafeMutableBufferPointer(start: bytePtr, count: length)
_pointer = result
return UnsafeRawPointer(result.baseAddress!)
}
}
override var mutableBytes: UnsafeMutableRawPointer {
let newBufferLength = _length
let newBuffer = malloc(newBufferLength)
if let ptr = _pointer {
// Copy the existing data to the new box, then return its pointer
memmove(newBuffer!, ptr.baseAddress!, newBufferLength)
} else {
// Set new data to 1s
memset(newBuffer!, 1, newBufferLength)
}
let bytePtr = newBuffer!.bindMemory(to: UInt8.self, capacity: newBufferLength)
let result = UnsafeMutableBufferPointer(start: bytePtr, count: newBufferLength)
_pointer = result
_length = newBufferLength
return UnsafeMutableRawPointer(result.baseAddress!)
}
override func getBytes(_ buffer: UnsafeMutableRawPointer, length: Int) {
if let d = _pointer {
// Get the real data from the buffer
memmove(buffer, d.baseAddress!, length)
} else {
// A more efficient implementation of getBytes in the case where no one has asked for our backing bytes
memset(buffer, 1, length)
}
}
}
var heldData: Data?
// this holds a reference while applying the function which forces the internal ref type to become non-uniquely referenced
func holdReference(_ data: Data, apply: () -> Void) {
heldData = data
apply()
heldData = nil
}
// MARK: -
// String of course has its own way to get data, but this way tests our own data struct
func dataFrom(_ string : String) -> Data {
// Create a Data out of those bytes
return string.utf8CString.withUnsafeBufferPointer { (ptr) in
ptr.baseAddress!.withMemoryRebound(to: UInt8.self, capacity: ptr.count) {
// Subtract 1 so we don't get the null terminator byte. This matches NSString behavior.
return Data(bytes: $0, count: ptr.count - 1)
}
}
}
func test_writeToURLOptions() {
let saveData = try! Data(contentsOf: Bundle.module.url(forResource: "Test", withExtension: "plist")!)
let savePath = URL(fileURLWithPath: NSTemporaryDirectory() + "Test1.plist")
do {
try saveData.write(to: savePath, options: .atomic)
let fileManager = FileManager.default
XCTAssertTrue(fileManager.fileExists(atPath: savePath.path))
try! fileManager.removeItem(atPath: savePath.path)
} catch {
XCTFail()
}
}
#if !os(Windows)
// NOTE: `umask(3)` is process global. Therefore, the behavior is unknown if `withUmask(_:_:)` is used simultaneously.
private func withUmask(_ mode: mode_t, _ block: () -> Void) {
let original = umask(mode)
block()
umask(original)
}
#endif
func test_writeToURLPermissions() {
#if NS_FOUNDATION_ALLOWS_TESTABLE_IMPORT && !os(Windows)
withUmask(0) {
do {
let data = Data()
let url = URL(fileURLWithPath: NSTemporaryDirectory() + "meow")
try data.write(to: url)
let fileManager = FileManager.default
let permission = try fileManager.attributesOfItem(atPath: url.path)[.posixPermissions] as? Int
#if canImport(Darwin)
let expected = Int(S_IRUSR) | Int(S_IWUSR) | Int(S_IRGRP) | Int(S_IWGRP) | Int(S_IROTH) | Int(S_IWOTH)
#elseif canImport(Android)
let expected = Int(Android.S_IRUSR) | Int(Android.S_IWUSR) | Int(Android.S_IRGRP) | Int(Android.S_IWGRP) | Int(Android.S_IROTH) | Int(Android.S_IWOTH)
#else
let expected = Int(Glibc.S_IRUSR) | Int(Glibc.S_IWUSR) | Int(Glibc.S_IRGRP) | Int(Glibc.S_IWGRP) | Int(Glibc.S_IROTH) | Int(Glibc.S_IWOTH)
#endif
XCTAssertEqual(permission, expected)
try! fileManager.removeItem(atPath: url.path)
} catch {
XCTFail()
}
}
#endif
}
func test_writeToURLPermissionsWithAtomic() {
#if NS_FOUNDATION_ALLOWS_TESTABLE_IMPORT && !os(Windows)
withUmask(0) {
do {
let data = Data()
let url = URL(fileURLWithPath: NSTemporaryDirectory() + "meow")
try data.write(to: url, options: .atomic)
let fileManager = FileManager.default
let permission = try fileManager.attributesOfItem(atPath: url.path)[.posixPermissions] as? Int
#if canImport(Darwin)
let expected = Int(S_IRUSR) | Int(S_IWUSR) | Int(S_IRGRP) | Int(S_IWGRP) | Int(S_IROTH) | Int(S_IWOTH)
#elseif canImport(Android)
let expected = Int(Android.S_IRUSR) | Int(Android.S_IWUSR) | Int(Android.S_IRGRP) | Int(Android.S_IWGRP) | Int(Android.S_IROTH) | Int(Android.S_IWOTH)
#else
let expected = Int(Glibc.S_IRUSR) | Int(Glibc.S_IWUSR) | Int(Glibc.S_IRGRP) | Int(Glibc.S_IWGRP) | Int(Glibc.S_IROTH) | Int(Glibc.S_IWOTH)
#endif
XCTAssertEqual(permission, expected)
try! fileManager.removeItem(atPath: url.path)
} catch {
XCTFail()
}
}
#endif
}
func test_writeToURLSpecialFile() {
#if os(Windows)
let url = URL(fileURLWithPath: "CON")
#else
let url = URL(fileURLWithPath: "/dev/stdout")
#endif
XCTAssertNoThrow(try Data("Output to STDOUT\n".utf8).write(to: url))
}
func test_emptyDescription() {
let expected = "<>"
let bytes: [UInt8] = []
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(expected, data.description)
}
func test_description() {
let expected = "<ff4c3e00 55>"
let bytes: [UInt8] = [0xff, 0x4c, 0x3e, 0x00, 0x55]
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(data.description, expected)
}
func test_longDescription() {
// taken directly from Foundation
let expected = "<ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8ff6e 4482d8ff 6e4482d8 ff6e4482 d8ff6e44 82d8>"
let bytes: [UInt8] = [0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, 0xff, 0x6e, 0x44, 0x82, 0xd8, ]
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(expected, data.description)
}
func test_debugDescription() {
let expected = "<ff4c3e00 55>"
let bytes: [UInt8] = [0xff, 0x4c, 0x3e, 0x00, 0x55]
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(data.debugDescription, expected)
}
func test_limitDebugDescription() {
let expected = "<ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff>"
let bytes = [UInt8](repeating: 0xff, count: 1024)
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(data.debugDescription, expected)
}
func test_longDebugDescription() {
let expected = "<ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ... ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff>"
let bytes = [UInt8](repeating: 0xff, count: 100_000)
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(data.debugDescription, expected)
}
func test_edgeDebugDescription() {
let expected = "<ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ... ffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ff>"
let bytes = [UInt8](repeating: 0xff, count: 1025)
let data = NSData(bytes: bytes, length: bytes.count)
XCTAssertEqual(data.debugDescription, expected)
}
func test_edgeNoCopyDescription() {
let expected = "<ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ... ffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ff>"
var bytes = [UInt8](repeating: 0xff, count: 1025)
bytes.withUnsafeMutableBufferPointer {
let baseAddress = $0.baseAddress!
let count = $0.count
let data = NSData(bytesNoCopy: UnsafeMutableRawPointer(baseAddress), length: count, freeWhenDone: false)
XCTAssertEqual(data.debugDescription, expected)
XCTAssertEqual(data.bytes, UnsafeRawPointer(baseAddress))
}
}
func test_initializeWithBase64EncodedDataGetsDecodedData() {
let plainText = "ARMA virumque cano, Troiae qui primus ab oris\nItaliam, fato profugus, Laviniaque venit"
let encodedText = "QVJNQSB2aXJ1bXF1ZSBjYW5vLCBUcm9pYWUgcXVpIHByaW11cyBhYiBvcmlzCkl0YWxpYW0sIGZhdG8gcHJvZnVndXMsIExhdmluaWFxdWUgdmVuaXQ="
guard let encodedData = encodedText.data(using: .utf8) else {
XCTFail("Could not get UTF-8 data")
return
}
guard let decodedData = Data(base64Encoded: encodedData, options: []) else {
XCTFail("Could not Base-64 decode data")
return
}
guard let decodedText = String(data: decodedData, encoding: .utf8) else {
XCTFail("Could not convert decoded data to a UTF-8 String")
return
}
XCTAssertEqual(decodedText, plainText)
XCTAssertTrue(decodedData == plainText.data(using: .utf8)!)
}
func test_initializeWithBase64EncodedDataWithNonBase64CharacterIsNil() {
let encodedText = "QVJNQSB2aXJ1bXF1ZSBjYW5vLCBUcm9pYWUgcXVpIHBya$W11cyBhYiBvcmlzCkl0YWxpYW0sIGZhdG8gcHJvZnVndXMsIExhdmluaWFxdWUgdmVuaXQ="
guard let encodedData = encodedText.data(using: .utf8) else {
XCTFail("Could not get UTF-8 data")
return
}
let decodedData = NSData(base64Encoded: encodedData, options: [])
XCTAssertNil(decodedData)
}
func test_initializeWithBase64EncodedDataWithNonBase64CharacterWithOptionToAllowItSkipsCharacter() {
let plainText = "ARMA virumque cano, Troiae qui primus ab oris\nItaliam, fato profugus, Laviniaque venit"
let encodedText = "QVJNQSB2aXJ1bXF1ZSBjYW5vLCBUcm9pYWUgcXVpIHBya$W11cyBhYiBvcmlzCkl0YWxpYW0sIGZhdG8gcHJvZnVndXMsIExhdmluaWFxdWUgdmVuaXQ="
guard let encodedData = encodedText.data(using: .utf8) else {
XCTFail("Could not get UTF-8 data")
return
}
guard let decodedData = Data(base64Encoded: encodedData, options: [.ignoreUnknownCharacters]) else {
XCTFail("Could not Base-64 decode data")
return
}
guard let decodedText = String(data: decodedData, encoding: .utf8) else {
XCTFail("Could not convert decoded data to a UTF-8 String")
return
}
XCTAssertEqual(decodedText, plainText)
XCTAssertTrue(decodedData == plainText.data(using: .utf8)!)
}
func test_initializeWithBase64EncodedStringGetsDecodedData() {
let plainText = "ARMA virumque cano, Troiae qui primus ab oris\nItaliam, fato profugus, Laviniaque venit"
let encodedText = "QVJNQSB2aXJ1bXF1ZSBjYW5vLCBUcm9pYWUgcXVpIHByaW11cyBhYiBvcmlzCkl0YWxpYW0sIGZhdG8gcHJvZnVndXMsIExhdmluaWFxdWUgdmVuaXQ="
guard let decodedData = Data(base64Encoded: encodedText, options: []) else {
XCTFail("Could not Base-64 decode data")
return
}
guard let decodedText = String(data: decodedData, encoding: .utf8) else {
XCTFail("Could not convert decoded data to a UTF-8 String")
return
}
XCTAssertEqual(decodedText, plainText)
}
func test_base64EncodedDataGetsEncodedText() {
let plainText = "Constitit, et lacrimans, `Quis iam locus’ inquit `Achate,\nquae regio in terris nostri non plena laboris?`"
let encodedText = "Q29uc3RpdGl0LCBldCBsYWNyaW1hbnMsIGBRdWlzIGlhbSBsb2N1c+KAmSBpbnF1aXQgYEFjaGF0ZSwKcXVhZSByZWdpbyBpbiB0ZXJyaXMgbm9zdHJpIG5vbiBwbGVuYSBsYWJvcmlzP2A="
guard let data = plainText.data(using: .utf8) else {
XCTFail("Could not encode UTF-8 string")
return
}
let encodedData = data.base64EncodedData()
guard let encodedTextResult = String(data: encodedData, encoding: .ascii) else {
XCTFail("Could not convert encoded data to an ASCII String")
return
}
XCTAssertEqual(encodedTextResult, encodedText)
}
func test_base64EncodedDataWithOptionToInsertLineFeedsContainsLineFeed() {
let plainText = "Constitit, et lacrimans, `Quis iam locus’ inquit `Achate,\nquae regio in terris nostri non plena laboris?`"
let encodedText = "Q29uc3RpdGl0LCBldCBsYWNyaW1hbnMsIGBRdWlzIGlhbSBsb2N1c+KAmSBpbnF1\naXQgYEFjaGF0ZSwKcXVhZSByZWdpbyBpbiB0ZXJyaXMgbm9zdHJpIG5vbiBwbGVu\nYSBsYWJvcmlzP2A="
guard let data = plainText.data(using: .utf8) else {
XCTFail("Could not encode UTF-8 string")
return
}
let encodedData = data.base64EncodedData(options: [.lineLength64Characters, .endLineWithLineFeed])
guard let encodedTextResult = String(data: encodedData, encoding: .ascii) else {
XCTFail("Could not convert encoded data to an ASCII String")
return
}
XCTAssertEqual(encodedTextResult, encodedText)
}
func test_base64EncodedDataWithOptionToInsertCarriageReturnContainsCarriageReturn() {
let plainText = "Constitit, et lacrimans, `Quis iam locus’ inquit `Achate,\nquae regio in terris nostri non plena laboris?`"
let encodedText = "Q29uc3RpdGl0LCBldCBsYWNyaW1hbnMsIGBRdWlzIGlhbSBsb2N1c+KAmSBpbnF1aXQgYEFjaGF0\rZSwKcXVhZSByZWdpbyBpbiB0ZXJyaXMgbm9zdHJpIG5vbiBwbGVuYSBsYWJvcmlzP2A="
guard let data = plainText.data(using: .utf8) else {
XCTFail("Could not encode UTF-8 string")
return
}
let encodedData = data.base64EncodedData(options: [.lineLength76Characters, .endLineWithCarriageReturn])
guard let encodedTextResult = String(data: encodedData, encoding: .ascii) else {
XCTFail("Could not convert encoded data to an ASCII String")
return
}
XCTAssertEqual(encodedTextResult, encodedText)
}
func test_base64EncodedDataWithOptionToInsertCarriageReturnAndLineFeedContainsBoth() {
let plainText = "Revocate animos, maestumque timorem mittite: forsan et haec olim meminisse iuvabit."
let encodedText = "UmV2b2NhdGUgYW5pbW9zLCBtYWVzdHVtcXVlIHRpbW9yZW0gbWl0dGl0ZTogZm9yc2FuIGV0IGhh\r\nZWMgb2xpbSBtZW1pbmlzc2UgaXV2YWJpdC4="
guard let data = plainText.data(using: .utf8) else {
XCTFail("Could not encode UTF-8 string")
return
}
let encodedData = data.base64EncodedData(options: [.lineLength76Characters, .endLineWithCarriageReturn, .endLineWithLineFeed])
guard let encodedTextResult = String(data: encodedData, encoding: .ascii) else {
XCTFail("Could not convert encoded data to an ASCII String")
return
}
XCTAssertEqual(encodedTextResult, encodedText)
}
func test_base64EncodeDoesNotAddLineSeparatorsWhenStringFitsInLine() {
XCTAssertEqual(
Data(repeating: 0, count: 48).base64EncodedString(options: .lineLength64Characters),
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
"each 3 byte is converted into 4 characterss. 48 / 3 * 4 <= 64, therefore result should not have line separator."
)
XCTAssertEqual(
Data(repeating: 0, count: 57).base64EncodedString(options: .lineLength76Characters),
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
"each 3 byte is converted into 4 characterss. 57 / 3 * 4 <= 76, therefore result should not have line separator."
)
}
func test_base64EncodeAddsLineSeparatorsWhenStringDoesNotFitInLine() {
XCTAssertEqual(
Data(repeating: 0, count: 49).base64EncodedString(options: .lineLength64Characters),
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\r\nAA==",
"each 3 byte is converted into 4 characterss. 49 / 3 * 4 > 64, therefore result should have lines with separator."
)
XCTAssertEqual(
Data(repeating: 0, count: 58).base64EncodedString(options: .lineLength76Characters),
"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\r\nAA==",
"each 3 byte is converted into 4 characterss. 58 / 3 * 4 > 76, therefore result should have lines with separator."
)
}
func test_base64EncodedStringGetsEncodedText() {
let plainText = "Revocate animos, maestumque timorem mittite: forsan et haec olim meminisse iuvabit."
let encodedText = "UmV2b2NhdGUgYW5pbW9zLCBtYWVzdHVtcXVlIHRpbW9yZW0gbWl0dGl0ZTogZm9yc2FuIGV0IGhhZWMgb2xpbSBtZW1pbmlzc2UgaXV2YWJpdC4="
guard let data = plainText.data(using: .utf8) else {
XCTFail("Could not encode UTF-8 string")
return
}
let encodedTextResult = data.base64EncodedString()
XCTAssertEqual(encodedTextResult, encodedText)
}
func test_base64EncodeEmptyData() {
XCTAssertEqual(Data().base64EncodedString(), "")
XCTAssertEqual(NSData().base64EncodedString(), "")
XCTAssertEqual(Data().base64EncodedData(), Data())
XCTAssertEqual(NSData().base64EncodedData(), Data())
}
func test_base64DecodeWithPadding1() {
let encodedPadding1 = "AoR="
let dataPadding1Bytes : [UInt8] = [0x02,0x84]
let dataPadding1 = NSData(bytes: dataPadding1Bytes, length: dataPadding1Bytes.count)
guard let decodedPadding1 = Data(base64Encoded:encodedPadding1, options: []) else {
XCTFail("Could not Base-64 decode data")
return
}
XCTAssert(dataPadding1.isEqual(to: decodedPadding1))
}
func test_base64DecodeWithPadding2() {
let encodedPadding2 = "Ao=="
let dataPadding2Bytes : [UInt8] = [0x02]
let dataPadding2 = NSData(bytes: dataPadding2Bytes, length: dataPadding2Bytes.count)
guard let decodedPadding2 = Data(base64Encoded:encodedPadding2, options: []) else {
XCTFail("Could not Base-64 decode data")
return
}
XCTAssert(dataPadding2.isEqual(to: decodedPadding2))
}
func test_rangeOfData() {
let baseData : [UInt8] = [0x00,0x01,0x02,0x03,0x04]
let base = NSData(bytes: baseData, length: baseData.count)
let baseFullRange = NSRange(location : 0,length : baseData.count)
let noPrefixRange = NSRange(location : 2,length : baseData.count-2)
let noSuffixRange = NSRange(location : 0,length : baseData.count-2)
let notFoundRange = NSRange(location: NSNotFound, length: 0)
let prefixData : [UInt8] = [0x00,0x01]
let prefix = Data(bytes: prefixData, count: prefixData.count)
let prefixRange = NSRange(location: 0, length: prefixData.count)
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [], in: baseFullRange),prefixRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [.anchored], in: baseFullRange),prefixRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [.backwards], in: baseFullRange),prefixRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [.backwards,.anchored], in: baseFullRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [], in: noPrefixRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [.backwards], in: noPrefixRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [], in: noSuffixRange),prefixRange))
XCTAssert(NSEqualRanges(base.range(of: prefix, options: [.backwards], in: noSuffixRange),prefixRange))
let suffixData : [UInt8] = [0x03,0x04]
let suffix = Data(bytes: suffixData, count: suffixData.count)
let suffixRange = NSRange(location: 3, length: suffixData.count)
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [], in: baseFullRange),suffixRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [.anchored], in: baseFullRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [.backwards], in: baseFullRange),suffixRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [.backwards,.anchored], in: baseFullRange),suffixRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [], in: noPrefixRange),suffixRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [.backwards], in: noPrefixRange),suffixRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [], in: noSuffixRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: suffix, options: [.backwards], in: noSuffixRange),notFoundRange))
let sliceData : [UInt8] = [0x02,0x03]
let slice = Data(bytes: sliceData, count: sliceData.count)
let sliceRange = NSRange(location: 2, length: sliceData.count)
XCTAssert(NSEqualRanges(base.range(of: slice, options: [], in: baseFullRange),sliceRange))
XCTAssert(NSEqualRanges(base.range(of: slice, options: [.anchored], in: baseFullRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: slice, options: [.backwards], in: baseFullRange),sliceRange))
XCTAssert(NSEqualRanges(base.range(of: slice, options: [.backwards,.anchored], in: baseFullRange),notFoundRange))
let empty = Data()
XCTAssert(NSEqualRanges(base.range(of: empty, options: [], in: baseFullRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: empty, options: [.anchored], in: baseFullRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: empty, options: [.backwards], in: baseFullRange),notFoundRange))
XCTAssert(NSEqualRanges(base.range(of: empty, options: [.backwards,.anchored], in: baseFullRange),notFoundRange))
}
func test_sr10689_rangeOfDataProtocol() {
// https://bugs.swift.org/browse/SR-10689
let base = Data([0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x02, 0x03,
0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x02, 0x03])
let subdata = base[10..<13] // [0x02, 0x03, 0x00]
let oneByte = base[14..<15] // [0x02]
do { // firstRange(of:in:)
func assertFirstRange(_ data: Data, _ fragment: Data, range: ClosedRange<Int>? = nil, expectedStartIndex: Int?,
message: @autoclosure () -> String = "", file: StaticString = #file, line: UInt = #line)
{
if let index = expectedStartIndex {
let expectedRange: Range<Int> = index..<(index + fragment.count)
if let someRange = range {
XCTAssertEqual(data.firstRange(of: fragment, in: someRange), expectedRange, message(), file: file, line: line)
} else {
XCTAssertEqual(data.firstRange(of: fragment), expectedRange, message(), file: file, line: line)
}
} else {
if let someRange = range {
XCTAssertNil(data.firstRange(of: fragment, in: someRange), message(), file: file, line: line)
} else {
XCTAssertNil(data.firstRange(of: fragment), message(), file: file, line: line)
}
}
}
assertFirstRange(base, base, expectedStartIndex: base.startIndex)
assertFirstRange(base, subdata, expectedStartIndex: 2)
assertFirstRange(base, oneByte, expectedStartIndex: 2)
assertFirstRange(subdata, base, expectedStartIndex: nil)
assertFirstRange(subdata, subdata, expectedStartIndex: subdata.startIndex)
assertFirstRange(subdata, oneByte, expectedStartIndex: subdata.startIndex)
assertFirstRange(oneByte, base, expectedStartIndex: nil)
assertFirstRange(oneByte, subdata, expectedStartIndex: nil)
assertFirstRange(oneByte, oneByte, expectedStartIndex: oneByte.startIndex)
assertFirstRange(base, subdata, range: 1...14, expectedStartIndex: 2)
assertFirstRange(base, subdata, range: 6...8, expectedStartIndex: 6)
assertFirstRange(base, subdata, range: 8...10, expectedStartIndex: nil)
assertFirstRange(base, oneByte, range: 1...14, expectedStartIndex: 2)
assertFirstRange(base, oneByte, range: 6...6, expectedStartIndex: 6)
assertFirstRange(base, oneByte, range: 8...9, expectedStartIndex: nil)
}
do { // lastRange(of:in:)
func assertLastRange(_ data: Data, _ fragment: Data, range: ClosedRange<Int>? = nil, expectedStartIndex: Int?,
message: @autoclosure () -> String = "", file: StaticString = #file, line: UInt = #line)
{
if let index = expectedStartIndex {
let expectedRange: Range<Int> = index..<(index + fragment.count)
if let someRange = range {
XCTAssertEqual(data.lastRange(of: fragment, in: someRange), expectedRange, message(), file: file, line: line)
} else {
XCTAssertEqual(data.lastRange(of: fragment), expectedRange, message(), file: file, line: line)
}
} else {
if let someRange = range {
XCTAssertNil(data.lastRange(of: fragment, in: someRange), message(), file: file, line: line)
} else {
XCTAssertNil(data.lastRange(of: fragment), message(), file: file, line: line)
}
}
}
assertLastRange(base, base, expectedStartIndex: base.startIndex)
assertLastRange(base, subdata, expectedStartIndex: 10)
assertLastRange(base, oneByte, expectedStartIndex: 14)
assertLastRange(subdata, base, expectedStartIndex: nil)
assertLastRange(subdata, subdata, expectedStartIndex: subdata.startIndex)
assertLastRange(subdata, oneByte, expectedStartIndex: subdata.startIndex)
assertLastRange(oneByte, base, expectedStartIndex: nil)
assertLastRange(oneByte, subdata, expectedStartIndex: nil)
assertLastRange(oneByte, oneByte, expectedStartIndex: oneByte.startIndex)
assertLastRange(base, subdata, range: 1...14, expectedStartIndex: 10)
assertLastRange(base, subdata, range: 6...8, expectedStartIndex: 6)
assertLastRange(base, subdata, range: 8...10, expectedStartIndex: nil)
assertLastRange(base, oneByte, range: 1...14, expectedStartIndex: 14)
assertLastRange(base, oneByte, range: 6...6, expectedStartIndex: 6)
assertLastRange(base, oneByte, range: 8...9, expectedStartIndex: nil)
}
}
// Check all of the NSMutableData constructors are available.
func test_initNSMutableData() {
let mData = NSMutableData()
XCTAssertEqual(mData.length, 0)
}
func test_initNSMutableDataWithLength() {
let mData = NSMutableData(length: 30)
XCTAssertNotNil(mData)
XCTAssertEqual(mData!.length, 30)
}
func test_initNSMutableDataWithCapacity() {
let mData = NSMutableData(capacity: 30)
XCTAssertNotNil(mData)
XCTAssertEqual(mData!.length, 0)
}
func test_initNSMutableDataFromData() {
let data = Data([1, 2, 3])
let mData = NSMutableData(data: data)
XCTAssertEqual(mData.length, 3)
XCTAssertEqual(NSData(data: data), mData)
}
func test_initNSMutableDataFromBytes() {
let data = Data([1, 2, 3, 4, 5, 6])
var testBytes: [UInt8] = [1, 2, 3, 4, 5, 6]
let md1 = NSMutableData(bytes: &testBytes, length: testBytes.count)
XCTAssertEqual(md1, NSData(data: data))
let md2 = NSMutableData(bytes: nil, length: 0)
XCTAssertEqual(md2.length, 0)
let testBuffer = malloc(testBytes.count)!
let md3 = NSMutableData(bytesNoCopy: testBuffer, length: testBytes.count)
md3.replaceBytes(in: NSRange(location: 0, length: testBytes.count), withBytes: &testBytes)
XCTAssertEqual(md3, NSData(data: data))
let md4 = NSMutableData(bytesNoCopy: &testBytes, length: testBytes.count, deallocator: nil)
XCTAssertEqual(md4.length, testBytes.count)
let md5 = NSMutableData(bytesNoCopy: &testBytes, length: testBytes.count, freeWhenDone: false)
XCTAssertEqual(md5, NSData(data: data))
}
func test_initNSMutableDataContentsOf() {
let testDir = Bundle.module.resourcePath
let filename = testDir!.appending("/NSStringTestData.txt")
let url = URL(fileURLWithPath: filename)
func testText(_ mData: NSMutableData?) {
guard let mData = mData else {
XCTFail("Contents of file are Nil")
return
}
if let txt = String(data: Data(referencing: mData), encoding: .ascii) {
XCTAssertEqual(txt, "swift-corelibs-foundation")
} else {
XCTFail("Cant convert to string")
}
}
let contents1 = NSMutableData(contentsOfFile: filename)
XCTAssertNotNil(contents1)
testText(contents1)
let contents2 = try? NSMutableData(contentsOfFile: filename, options: [])
XCTAssertNotNil(contents2)
testText(contents2)
let contents3 = NSMutableData(contentsOf: url)
XCTAssertNotNil(contents3)
testText(contents3)
let contents4 = try? NSMutableData(contentsOf: url, options: [])
XCTAssertNotNil(contents4)
testText(contents4)
// Test failure to read
let badFilename = "does not exist"
let badUrl = URL(fileURLWithPath: badFilename)
XCTAssertNil(NSMutableData(contentsOfFile: badFilename))
XCTAssertNil(try? NSMutableData(contentsOfFile: badFilename, options: []))
XCTAssertNil(NSMutableData(contentsOf: badUrl))
XCTAssertNil(try? NSMutableData(contentsOf: badUrl, options: []))
}
func test_initNSMutableDataBase64() {
let srcData = Data([1, 2, 3, 4, 5, 6, 7, 8, 9, 0])
let base64Data = srcData.base64EncodedData()
let base64String = srcData.base64EncodedString()
XCTAssertEqual(base64String, "AQIDBAUGBwgJAA==")
let mData1 = NSMutableData(base64Encoded: base64Data)
XCTAssertNotNil(mData1)
XCTAssertEqual(mData1!, NSData(data: srcData))
let mData2 = NSMutableData(base64Encoded: base64String)
XCTAssertNotNil(mData2)
XCTAssertEqual(mData2!, NSData(data: srcData))
// Test bad input
XCTAssertNil(NSMutableData(base64Encoded: Data([1,2,3]), options: []))
XCTAssertNil(NSMutableData(base64Encoded: "x", options: []))
}
func test_replaceBytes() {
var data = Data([0, 0, 0, 0, 0])
let newData = Data([1, 2, 3, 4, 5])
// test replaceSubrange(_, with:)
XCTAssertFalse(data == newData)
data.replaceSubrange(data.startIndex..<data.endIndex, with: newData)
XCTAssertTrue(data == newData)
// subscript(index:) uses replaceBytes so use it to test edge conditions
data[0] = 0
data[4] = 0
XCTAssertTrue(data == Data([0, 2, 3, 4, 0]))
// test NSMutableData.replaceBytes(in:withBytes:length:) directly
func makeData(_ data: [UInt8]) -> NSData {
return NSData(bytes: data, length: data.count)
}
guard let mData = NSMutableData(length: 5) else {
XCTFail("Cant create NSMutableData")
return
}
let replacement = makeData([8, 9, 10])
withExtendedLifetime(replacement) {
mData.replaceBytes(in: NSRange(location: 1, length: 3), withBytes: replacement.bytes,
length: 3)
}
let expected = makeData([0, 8, 9, 10, 0])
XCTAssertEqual(mData, expected)
}
func test_replaceBytesWithNil() {
func makeData(_ data: [UInt8]) -> NSMutableData {
return NSMutableData(bytes: data, length: data.count)
}
let mData = makeData([1, 2, 3, 4, 5])
mData.replaceBytes(in: NSRange(location: 1, length: 3), withBytes: nil, length: 0)
let expected = makeData([1, 5])
XCTAssertEqual(mData, expected)
}
func test_initDataWithCapacity() {
let data = Data(capacity: 123)
XCTAssertEqual(data.count, 0)
}
func test_initDataWithCount() {
let dataSize = 1024
let data = Data(count: dataSize)
XCTAssertEqual(data.count, dataSize)
if let index = (data.firstIndex { $0 != 0 }) {
XCTFail("Byte at index: \(index) is not zero: \(data[index])")
return
}
}
func test_emptyStringToData() {
let data = "".data(using: .utf8)!
XCTAssertEqual(0, data.count, "data from empty string is empty")
}
}
// Tests from Swift SDK Overlay
extension TestNSData {
func testBasicConstruction() throws {
// Make sure that we were able to create some data
let hello = dataFrom("hello")
let helloLength = hello.count
XCTAssertEqual(hello[0], 0x68, "Unexpected first byte")
let world = dataFrom(" world")
var helloWorld = hello
world.withUnsafeBytes {
helloWorld.append($0.baseAddress!.assumingMemoryBound(to: UInt8.self), count: world.count)
}
XCTAssertEqual(hello[0], 0x68, "First byte should not have changed")
XCTAssertEqual(hello.count, helloLength, "Length of first data should not have changed")
XCTAssertEqual(helloWorld.count, hello.count + world.count, "The total length should include both buffers")
}
func testInitializationWithArray() {
let data = Data([1, 2, 3])
XCTAssertEqual(3, data.count)
let data2 = Data([1, 2, 3].filter { $0 >= 2 })
XCTAssertEqual(2, data2.count)
let data3 = Data([1, 2, 3, 4, 5][1..<3])
XCTAssertEqual(2, data3.count)
}
func testMutableData() {
let hello = dataFrom("hello")
let helloLength = hello.count
XCTAssertEqual(hello[0], 0x68, "Unexpected first byte")
// Double the length
var mutatingHello = hello
mutatingHello.count *= 2
XCTAssertEqual(hello.count, helloLength, "The length of the initial data should not have changed")
XCTAssertEqual(mutatingHello.count, helloLength * 2, "The length should have changed")
// Get the underlying data for hello2
mutatingHello.withUnsafeMutableBytes { (bytes : UnsafeMutableRawBufferPointer) in
XCTAssertEqual(bytes[0], 0x68, "First byte should be 0x68")
// Mutate it
bytes[0] = 0x67
XCTAssertEqual(bytes[0], 0x67, "First byte should be 0x67")
}
XCTAssertEqual(mutatingHello[0], 0x67, "First byte accessed via other method should still be 0x67")
// Verify that the first data is still correct
XCTAssertEqual(hello[0], 0x68, "The first byte should still be 0x68")
}
func testBridgingDefault() {
let hello = dataFrom("hello")
// Convert from struct Data to NSData
if let s = NSString(data: hello, encoding: String.Encoding.utf8.rawValue) {
XCTAssertTrue(s.isEqual(to: "hello"), "The strings should be equal")
}
// Convert from NSData to struct Data
let goodbye = dataFrom("goodbye")
if let resultingData = NSString(string: "goodbye").data(using: String.Encoding.utf8.rawValue) {
XCTAssertEqual(resultingData[0], goodbye[0], "First byte should be equal")
}
}
func testBridgingMutable() {
// Create a mutable data
var helloWorld = dataFrom("hello")
helloWorld.append(dataFrom("world"))
// Convert from struct Data to NSData
if let s = NSString(data: helloWorld, encoding: String.Encoding.utf8.rawValue) {
XCTAssertTrue(s.isEqual(to: "helloworld"), "The strings should be equal")
}
}
func testEquality() {
let d1 = dataFrom("hello")
let d2 = dataFrom("hello")
// Use == explicitly here to make sure we're calling the right methods
XCTAssertTrue(d1 == d2, "Data should be equal")
}
func testDataInSet() {
let d1 = dataFrom("Hello")
let d2 = dataFrom("Hello")
let d3 = dataFrom("World")
var s = Set<Data>()
s.insert(d1)
s.insert(d2)
s.insert(d3)
XCTAssertEqual(s.count, 2, "Expected only two entries in the Set")
}
func testFirstRangeEmptyData() {
let d = Data([1, 2, 3])
XCTAssertNil(d.firstRange(of: Data()))
}
func testLastRangeEmptyData() {
let d = Data([1, 2, 3])
XCTAssertNil(d.lastRange(of: Data()))
}
func testReplaceSubrange() {
var hello = dataFrom("Hello")
let world = dataFrom("World")
hello[0] = world[0]
XCTAssertEqual(hello[0], world[0])
var goodbyeWorld = dataFrom("Hello World")
let goodbye = dataFrom("Goodbye")
let expected = dataFrom("Goodbye World")
goodbyeWorld.replaceSubrange(0..<5, with: goodbye)
XCTAssertEqual(goodbyeWorld, expected)
}
func testReplaceSubrange2() {
let hello = dataFrom("Hello")
let world = dataFrom(" World")
let goodbye = dataFrom("Goodbye")
let expected = dataFrom("Goodbye World")
var mutateMe = hello
mutateMe.append(world)