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TestJSONSerialization.swift
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// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 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
//
class TestJSONSerialization : XCTestCase {
let supportedEncodings: [String.Encoding] = [
.utf8,
.utf16, .utf16BigEndian,
.utf32LittleEndian, .utf32BigEndian
]
static var allTests: [(String, (TestJSONSerialization) -> () throws -> Void)] {
return JSONObjectWithDataTests
+ deserializationTests
+ isValidJSONObjectTests
+ serializationTests
}
}
//MARK: - JSONObjectWithData
extension TestJSONSerialization {
class var JSONObjectWithDataTests: [(String, (TestJSONSerialization) -> () throws -> Void)] {
return [
("test_JSONObjectWithData_emptyObject", test_JSONObjectWithData_emptyObject),
("test_JSONObjectWithData_encodingDetection", test_JSONObjectWithData_encodingDetection),
]
}
func test_JSONObjectWithData_emptyObject() {
var bytes: [UInt8] = [0x7B, 0x7D]
let subject = bytes.withUnsafeMutableBufferPointer {
return Data(buffer: $0)
}
let object = try! JSONSerialization.jsonObject(with: subject, options: []) as? [String:Any]
XCTAssertEqual(object?.count, 0)
}
//MARK: - Encoding Detection
func test_JSONObjectWithData_encodingDetection() {
let subjects: [(String, [UInt8])] = [
// BOM Detection
("{} UTF-8 w/BOM", [0xEF, 0xBB, 0xBF, 0x7B, 0x7D]),
("{} UTF-16BE w/BOM", [0xFE, 0xFF, 0x0, 0x7B, 0x0, 0x7D]),
("{} UTF-16LE w/BOM", [0xFF, 0xFE, 0x7B, 0x0, 0x7D, 0x0]),
("{} UTF-32BE w/BOM", [0x00, 0x00, 0xFE, 0xFF, 0x0, 0x0, 0x0, 0x7B, 0x0, 0x0, 0x0, 0x7D]),
("{} UTF-32LE w/BOM", [0xFF, 0xFE, 0x00, 0x00, 0x7B, 0x0, 0x0, 0x0, 0x7D, 0x0, 0x0, 0x0]),
// RFC4627 Detection
("{} UTF-8", [0x7B, 0x7D]),
("{} UTF-16BE", [0x0, 0x7B, 0x0, 0x7D]),
("{} UTF-16LE", [0x7B, 0x0, 0x7D, 0x0]),
("{} UTF-32BE", [0x0, 0x0, 0x0, 0x7B, 0x0, 0x0, 0x0, 0x7D]),
("{} UTF-32LE", [0x7B, 0x0, 0x0, 0x0, 0x7D, 0x0, 0x0, 0x0]),
// // Single Characters
// ("'3' UTF-8", [0x33]),
// ("'3' UTF-16BE", [0x0, 0x33]),
// ("'3' UTF-16LE", [0x33, 0x0]),
]
for (description, encoded) in subjects {
let result = try? JSONSerialization.jsonObject(with: Data(bytes:encoded, count: encoded.count), options: [])
XCTAssertNotNil(result, description)
}
}
}
//MARK: - JSONDeserialization
extension TestJSONSerialization {
enum ObjectType {
case data
case stream
}
static var objectType = ObjectType.data
class var deserializationTests: [(String, (TestJSONSerialization) -> () throws -> Void)] {
return [
//Deserialization with Data
("test_deserialize_emptyObject_withData", test_deserialize_emptyObject_withData),
("test_deserialize_multiStringObject_withData", test_deserialize_multiStringObject_withData),
("test_deserialize_emptyArray_withData", test_deserialize_emptyArray_withData),
("test_deserialize_multiStringArray_withData", test_deserialize_multiStringArray_withData),
("test_deserialize_unicodeString_withData", test_deserialize_unicodeString_withData),
("test_deserialize_stringWithSpacesAtStart_withData", test_deserialize_stringWithSpacesAtStart_withData),
("test_deserialize_values_withData", test_deserialize_values_withData),
("test_deserialize_values_as_reference_types_withData", test_deserialize_values_as_reference_types_withData),
("test_deserialize_numbers_withData", test_deserialize_numbers_withData),
("test_deserialize_numbers_as_reference_types_withData", test_deserialize_numbers_as_reference_types_withData),
("test_deserialize_simpleEscapeSequences_withData", test_deserialize_simpleEscapeSequences_withData),
("test_deserialize_unicodeEscapeSequence_withData", test_deserialize_unicodeEscapeSequence_withData),
("test_deserialize_unicodeSurrogatePairEscapeSequence_withData", test_deserialize_unicodeSurrogatePairEscapeSequence_withData),
// Disabled due to uninitialized memory SR-606
// ("test_deserialize_allowFragments_withData", test_deserialize_allowFragments_withData),
("test_deserialize_unterminatedObjectString_withData", test_deserialize_unterminatedObjectString_withData),
("test_deserialize_missingObjectKey_withData", test_deserialize_missingObjectKey_withData),
("test_deserialize_unexpectedEndOfFile_withData", test_deserialize_unexpectedEndOfFile_withData),
("test_deserialize_invalidValueInObject_withData", test_deserialize_invalidValueInObject_withData),
("test_deserialize_invalidValueIncorrectSeparatorInObject_withData", test_deserialize_invalidValueIncorrectSeparatorInObject_withData),
("test_deserialize_invalidValueInArray_withData", test_deserialize_invalidValueInArray_withData),
("test_deserialize_badlyFormedArray_withData", test_deserialize_badlyFormedArray_withData),
("test_deserialize_invalidEscapeSequence_withData", test_deserialize_invalidEscapeSequence_withData),
("test_deserialize_unicodeMissingTrailingSurrogate_withData", test_deserialize_unicodeMissingTrailingSurrogate_withData),
//Deserialization with Stream
("test_deserialize_emptyObject_withStream", test_deserialize_emptyObject_withStream),
("test_deserialize_multiStringObject_withStream", test_deserialize_multiStringObject_withStream),
("test_deserialize_emptyArray_withStream", test_deserialize_emptyArray_withStream),
("test_deserialize_multiStringArray_withStream", test_deserialize_multiStringArray_withStream),
("test_deserialize_unicodeString_withStream", test_deserialize_unicodeString_withStream),
("test_deserialize_stringWithSpacesAtStart_withStream", test_deserialize_stringWithSpacesAtStart_withStream),
("test_deserialize_values_withStream", test_deserialize_values_withStream),
("test_deserialize_values_as_reference_types_withStream", test_deserialize_values_as_reference_types_withStream),
("test_deserialize_numbers_withStream", test_deserialize_numbers_withStream),
("test_deserialize_numbers_as_reference_types_withStream", test_deserialize_numbers_as_reference_types_withStream),
("test_deserialize_simpleEscapeSequences_withStream", test_deserialize_simpleEscapeSequences_withStream),
("test_deserialize_unicodeEscapeSequence_withStream", test_deserialize_unicodeEscapeSequence_withStream),
("test_deserialize_unicodeSurrogatePairEscapeSequence_withStream", test_deserialize_unicodeSurrogatePairEscapeSequence_withStream),
// Disabled due to uninitialized memory SR-606
// ("test_deserialize_allowFragments_withStream", test_deserialize_allowFragments_withStream),
("test_deserialize_unterminatedObjectString_withStream", test_deserialize_unterminatedObjectString_withStream),
("test_deserialize_missingObjectKey_withStream", test_deserialize_missingObjectKey_withStream),
("test_deserialize_unexpectedEndOfFile_withStream", test_deserialize_unexpectedEndOfFile_withStream),
("test_deserialize_invalidValueInObject_withStream", test_deserialize_invalidValueInObject_withStream),
("test_deserialize_invalidValueIncorrectSeparatorInObject_withStream", test_deserialize_invalidValueIncorrectSeparatorInObject_withStream),
("test_deserialize_invalidValueInArray_withStream", test_deserialize_invalidValueInArray_withStream),
("test_deserialize_badlyFormedArray_withStream", test_deserialize_badlyFormedArray_withStream),
("test_deserialize_invalidEscapeSequence_withStream", test_deserialize_invalidEscapeSequence_withStream),
("test_deserialize_unicodeMissingTrailingSurrogate_withStream", test_deserialize_unicodeMissingTrailingSurrogate_withStream),
("test_JSONObjectWithStream_withFile", test_JSONObjectWithStream_withFile),
("test_JSONObjectWithStream_withURL", test_JSONObjectWithStream_withURL),
]
}
func test_deserialize_emptyObject_withData() {
deserialize_emptyObject(objectType: .data)
}
func test_deserialize_multiStringObject_withData() {
deserialize_multiStringObject(objectType: .data)
}
func test_deserialize_emptyArray_withData() {
deserialize_emptyArray(objectType: .data)
}
func test_deserialize_multiStringArray_withData() {
deserialize_multiStringArray(objectType: .data)
}
func test_deserialize_unicodeString_withData() {
deserialize_unicodeString(objectType: .data)
}
func test_deserialize_stringWithSpacesAtStart_withData() {
deserialize_stringWithSpacesAtStart(objectType: .data)
}
func test_deserialize_values_withData() {
deserialize_values(objectType: .data)
}
func test_deserialize_values_as_reference_types_withData() {
deserialize_values_as_reference_types(objectType: .data)
}
func test_deserialize_numbers_withData() {
deserialize_numbers(objectType: .data)
}
func test_deserialize_numbers_as_reference_types_withData() {
deserialize_numbers_as_reference_types(objectType: .data)
}
func test_deserialize_simpleEscapeSequences_withData() {
deserialize_simpleEscapeSequences(objectType: .data)
}
func test_deserialize_unicodeEscapeSequence_withData() {
deserialize_unicodeEscapeSequence(objectType: .data)
}
func test_deserialize_unicodeSurrogatePairEscapeSequence_withData() {
deserialize_unicodeSurrogatePairEscapeSequence(objectType: .data)
}
// Disabled due to uninitialized memory SR-606
// func test_deserialize_allowFragments_withData() {
// deserialize_allowFragments(objectType: .data)
// }
func test_deserialize_unterminatedObjectString_withData() {
deserialize_unterminatedObjectString(objectType: .data)
}
func test_deserialize_missingObjectKey_withData() {
deserialize_missingObjectKey(objectType: .data)
}
func test_deserialize_unexpectedEndOfFile_withData() {
deserialize_unexpectedEndOfFile(objectType: .data)
}
func test_deserialize_invalidValueInObject_withData() {
deserialize_invalidValueInObject(objectType: .data)
}
func test_deserialize_invalidValueIncorrectSeparatorInObject_withData() {
deserialize_invalidValueIncorrectSeparatorInObject(objectType: .data)
}
func test_deserialize_invalidValueInArray_withData() {
deserialize_invalidValueInArray(objectType: .data)
}
func test_deserialize_badlyFormedArray_withData() {
deserialize_badlyFormedArray(objectType: .data)
}
func test_deserialize_invalidEscapeSequence_withData() {
deserialize_invalidEscapeSequence(objectType: .data)
}
func test_deserialize_unicodeMissingTrailingSurrogate_withData() {
deserialize_unicodeMissingTrailingSurrogate(objectType: .data)
}
func test_deserialize_emptyObject_withStream() {
deserialize_emptyObject(objectType: .stream)
}
func test_deserialize_multiStringObject_withStream() {
deserialize_multiStringObject(objectType: .stream)
}
func test_deserialize_emptyArray_withStream() {
deserialize_emptyArray(objectType: .stream)
}
func test_deserialize_multiStringArray_withStream() {
deserialize_multiStringArray(objectType: .stream)
}
func test_deserialize_unicodeString_withStream() {
deserialize_unicodeString(objectType: .stream)
}
func test_deserialize_stringWithSpacesAtStart_withStream() {
deserialize_stringWithSpacesAtStart(objectType: .stream)
}
func test_deserialize_values_withStream() {
deserialize_values(objectType: .stream)
}
func test_deserialize_values_as_reference_types_withStream() {
deserialize_values_as_reference_types(objectType: .stream)
}
func test_deserialize_numbers_withStream() {
deserialize_numbers(objectType: .stream)
}
func test_deserialize_numbers_as_reference_types_withStream() {
deserialize_numbers_as_reference_types(objectType: .stream)
}
func test_deserialize_simpleEscapeSequences_withStream() {
deserialize_simpleEscapeSequences(objectType: .stream)
}
func test_deserialize_unicodeEscapeSequence_withStream() {
deserialize_unicodeEscapeSequence(objectType: .stream)
}
func test_deserialize_unicodeSurrogatePairEscapeSequence_withStream() {
deserialize_unicodeSurrogatePairEscapeSequence(objectType: .stream)
}
// Disabled due to uninitialized memory SR-606
// func test_deserialize_allowFragments_withStream() {
// deserialize_allowFragments(objectType: .stream)
// }
func test_deserialize_unterminatedObjectString_withStream() {
deserialize_unterminatedObjectString(objectType: .stream)
}
func test_deserialize_missingObjectKey_withStream() {
deserialize_missingObjectKey(objectType: .stream)
}
func test_deserialize_unexpectedEndOfFile_withStream() {
deserialize_unexpectedEndOfFile(objectType: .stream)
}
func test_deserialize_invalidValueInObject_withStream() {
deserialize_invalidValueInObject(objectType: .stream)
}
func test_deserialize_invalidValueIncorrectSeparatorInObject_withStream() {
deserialize_invalidValueIncorrectSeparatorInObject(objectType: .stream)
}
func test_deserialize_invalidValueInArray_withStream() {
deserialize_invalidValueInArray(objectType: .stream)
}
func test_deserialize_badlyFormedArray_withStream() {
deserialize_badlyFormedArray(objectType: .stream)
}
func test_deserialize_invalidEscapeSequence_withStream() {
deserialize_invalidEscapeSequence(objectType: .stream)
}
func test_deserialize_unicodeMissingTrailingSurrogate_withStream() {
deserialize_unicodeMissingTrailingSurrogate(objectType: .stream)
}
//MARK: - Object Deserialization
func deserialize_emptyObject(objectType: ObjectType) {
let subject = "{}"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [String: Any]
XCTAssertEqual(result?.count, 0)
} catch {
XCTFail("Error thrown: \(error)")
}
}
func deserialize_multiStringObject(objectType: ObjectType) {
let subject = "{ \"hello\": \"world\", \"swift\": \"rocks\" }"
do {
for encoding in [String.Encoding.utf8, String.Encoding.utf16BigEndian] {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [String: Any]
XCTAssertEqual(result?["hello"] as? String, "world")
XCTAssertEqual(result?["swift"] as? String, "rocks")
}
} catch {
XCTFail("Error thrown: \(error)")
}
}
func deserialize_stringWithSpacesAtStart(objectType: ObjectType) {
let subject = "{\"title\" : \" hello world!!\" }"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [String: Any]
XCTAssertEqual(result?["title"] as? String, " hello world!!")
} catch{
XCTFail("Error thrown: \(error)")
}
}
//MARK: - Array Deserialization
func deserialize_emptyArray(objectType: ObjectType) {
let subject = "[]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?.count, 0)
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_multiStringArray(objectType: ObjectType) {
let subject = "[\"hello\", \"swift⚡️\"]"
do {
for encoding in [String.Encoding.utf8, String.Encoding.utf16BigEndian] {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?[0] as? String, "hello")
XCTAssertEqual(result?[1] as? String, "swift⚡️")
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_unicodeString(objectType: ObjectType) {
/// Ģ has the same LSB as quotation mark " (U+0022) so test guarding against this case
let subject = "[\"unicode\", \"Ģ\", \"😢\"]"
do {
for encoding in [String.Encoding.utf16LittleEndian, String.Encoding.utf16BigEndian, String.Encoding.utf32LittleEndian, String.Encoding.utf32BigEndian] {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?[0] as? String, "unicode")
XCTAssertEqual(result?[1] as? String, "Ģ")
XCTAssertEqual(result?[2] as? String, "😢")
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
//MARK: - Value parsing
func deserialize_values(objectType: ObjectType) {
let subject = "[true, false, \"hello\", null, {}, []]"
do {
for encoding in supportedEncodings {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?[0] as? Bool, true)
XCTAssertEqual(result?[1] as? Bool, false)
XCTAssertEqual(result?[2] as? String, "hello")
XCTAssertNotNil(result?[3] as? NSNull)
XCTAssertNotNil(result?[4] as? [String:Any])
XCTAssertNotNil(result?[5] as? [Any])
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_values_as_reference_types(objectType: ObjectType) {
let subject = "[true, false, \"hello\", null, {}, []]"
do {
for encoding in supportedEncodings {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?[0] as? NSNumber, true)
XCTAssertEqual(result?[1] as? NSNumber, false)
XCTAssertEqual(result?[2] as? String, "hello")
XCTAssertNotNil(result?[3] as? NSNull)
XCTAssertNotNil(result?[4] as? [String:Any])
XCTAssertNotNil(result?[5] as? [Any])
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
//MARK: - Number parsing
func deserialize_numbers(objectType: ObjectType) {
let subject = "[1, -1, 1.3, -1.3, 1e3, 1E-3, 10]"
do {
for encoding in supportedEncodings {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?[0] as? Int, 1)
XCTAssertEqual(result?[1] as? Int, -1)
XCTAssertEqual(result?[2] as? Double, 1.3)
XCTAssertEqual(result?[3] as? Double, -1.3)
XCTAssertEqual(result?[4] as? Int, 1000)
XCTAssertEqual(result?[5] as? Double, 0.001)
XCTAssertEqual(result?[6] as? Int, 10)
XCTAssertEqual(result?[6] as? Double, 10.0)
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_numbers_as_reference_types(objectType: ObjectType) {
let subject = "[1, -1, 1.3, -1.3, 1e3, 1E-3, 10]"
do {
for encoding in supportedEncodings {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
XCTAssertEqual(result?[0] as? NSNumber, 1)
XCTAssertEqual(result?[1] as? NSNumber, -1)
XCTAssertEqual(result?[2] as? NSNumber, 1.3)
XCTAssertEqual(result?[3] as? NSNumber, -1.3)
XCTAssertEqual(result?[4] as? NSNumber, 1000)
XCTAssertEqual(result?[5] as? NSNumber, 0.001)
XCTAssertEqual(result?[6] as? NSNumber, 10)
XCTAssertEqual(result?[6] as? NSNumber, 10.0)
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
//MARK: - Escape Sequences
func deserialize_simpleEscapeSequences(objectType: ObjectType) {
let subject = "[\"\\\"\", \"\\\\\", \"\\/\", \"\\b\", \"\\f\", \"\\n\", \"\\r\", \"\\t\"]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let res = try getjsonObjectResult(data, objectType) as? [Any]
let result = res?.compactMap { $0 as? String }
XCTAssertEqual(result?[0], "\"")
XCTAssertEqual(result?[1], "\\")
XCTAssertEqual(result?[2], "/")
XCTAssertEqual(result?[3], "\u{08}")
XCTAssertEqual(result?[4], "\u{0C}")
XCTAssertEqual(result?[5], "\u{0A}")
XCTAssertEqual(result?[6], "\u{0D}")
XCTAssertEqual(result?[7], "\u{09}")
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_unicodeEscapeSequence(objectType: ObjectType) {
let subject = "[\"\\u2728\"]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
// result?[0] as? String returns an Optional<String> and RHS is promoted
// to Optional<String>
XCTAssertEqual(result?[0] as? String, "✨")
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_unicodeSurrogatePairEscapeSequence(objectType: ObjectType) {
let subject = "[\"\\uD834\\udd1E\"]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? [Any]
// result?[0] as? String returns an Optional<String> and RHS is promoted
// to Optional<String>
XCTAssertEqual(result?[0] as? String, "\u{1D11E}")
} catch {
XCTFail("Unexpected error: \(error)")
}
}
func deserialize_allowFragments(objectType: ObjectType) {
let subject = "3"
do {
for encoding in supportedEncodings {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
let result = try getjsonObjectResult(data, objectType) as? Int
XCTAssertEqual(result, 3)
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
//MARK: - Parsing Errors
func deserialize_unterminatedObjectString(objectType: ObjectType) {
let subject = "{\"}"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: UnterminatedString")
} catch {
// Passing case; the object as unterminated
}
}
func deserialize_missingObjectKey(objectType: ObjectType) {
let subject = "{3}"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Missing key for value")
} catch {
// Passing case; the key was missing for a value
}
}
func deserialize_unexpectedEndOfFile(objectType: ObjectType) {
let subject = "{"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Unexpected end of file")
} catch {
// Success
}
}
func deserialize_invalidValueInObject(objectType: ObjectType) {
let subject = "{\"error\":}"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Invalid value")
} catch {
// Passing case; the value is invalid
}
}
func deserialize_invalidValueIncorrectSeparatorInObject(objectType: ObjectType) {
let subject = "{\"missing\";}"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Invalid value")
} catch {
// passing case the value is invalid
}
}
func deserialize_invalidValueInArray(objectType: ObjectType) {
let subject = "[,"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Invalid value")
} catch {
// Passing case; the element in the array is missing
}
}
func deserialize_badlyFormedArray(objectType: ObjectType) {
let subject = "[2b4]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Badly formed array")
} catch {
// Passing case; the array is malformed
}
}
func deserialize_invalidEscapeSequence(objectType: ObjectType) {
let subject = "[\"\\e\"]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType)
XCTFail("Expected error: Invalid escape sequence")
} catch {
// Passing case; the escape sequence is invalid
}
}
func deserialize_unicodeMissingTrailingSurrogate(objectType: ObjectType) {
let subject = "[\"\\uD834\"]"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
let _ = try getjsonObjectResult(data, objectType) as? [String]
XCTFail("Expected error: Missing Trailing Surrogate")
} catch {
// Passing case; the unicode character is malformed
}
}
func test_JSONObjectWithStream_withFile() {
let subject = "{}"
do {
guard let data = subject.data(using: .utf8) else {
XCTFail("Unable to convert string to data")
return
}
if let filePath = createTestFile("TestJSON.txt",_contents: data) {
let fileStream: InputStream = InputStream(fileAtPath: filePath)!
fileStream.open()
let resultRead = try JSONSerialization.jsonObject(with: fileStream, options: [])
let result = resultRead as? [String: Any]
XCTAssertEqual(result?.count, 0)
fileStream.close()
removeTestFile(filePath)
}
} catch {
XCTFail("Error thrown: \(error)")
}
}
func test_JSONObjectWithStream_withURL() {
let subject = "[true, false, \"hello\", null, {}, []]"
do {
for encoding in supportedEncodings {
guard let data = subject.data(using: encoding) else {
XCTFail("Unable to convert string to data")
return
}
if let filePath = createTestFile("TestJSON.txt",_contents: data) {
let url = URL(fileURLWithPath: filePath)
let inputStream: InputStream = InputStream(url: url)!
inputStream.open()
let result = try JSONSerialization.jsonObject(with: inputStream, options: []) as? [Any]
inputStream.close()
removeTestFile(filePath)
XCTAssertEqual(result?[0] as? Bool, true)
XCTAssertEqual(result?[1] as? Bool, false)
XCTAssertEqual(result?[2] as? String, "hello")
XCTAssertNotNil(result?[3] as? NSNull)
XCTAssertNotNil(result?[4] as? [String:Any])
XCTAssertNotNil(result?[5] as? [Any])
}
}
} catch {
XCTFail("Unexpected error: \(error)")
}
}
private func getjsonObjectResult(_ data: Data,
_ objectType: ObjectType,
options opt: JSONSerialization.ReadingOptions = []) throws -> Any {
var result: Any
switch objectType {
case .data:
//Test with Data
result = try JSONSerialization.jsonObject(with: data, options: opt)
case .stream:
//Test with stream
let stream: InputStream = InputStream(data: data)
stream.open()
result = try JSONSerialization.jsonObject(with: stream, options: opt)
stream.close()
}
return result
}
}
// MARK: - isValidJSONObjectTests
extension TestJSONSerialization {
class var isValidJSONObjectTests: [(String, (TestJSONSerialization) -> () throws -> Void)] {
return [
("test_isValidJSONObjectTrue", test_isValidJSONObjectTrue),
("test_isValidJSONObjectFalse", test_isValidJSONObjectFalse),
("test_validNumericJSONObjects", test_validNumericJSONObjects)
]
}
func test_isValidJSONObjectTrue() {
let trueJSON: [Any] = [
// []
Array<Any>(),
// [1, ["string", [[]]]]
Array<Any>(arrayLiteral:
NSNumber(value: Int(1)),
Array<Any>(arrayLiteral:
"string",
Array<Any>(arrayLiteral:
Array<Any>()
)
)
),
// [NSNull(), ["1" : ["string", 1], "2" : NSNull()]]
Array<Any>(arrayLiteral:
NSNull(),
Dictionary<String, Any>(dictionaryLiteral:
(
"1",
Array<Any>(arrayLiteral:
"string",
NSNumber(value: Int(1))
)
),
(
"2",
NSNull()
)
)
),
// ["0" : 0]
Dictionary<String, Any>(dictionaryLiteral:
(
"0",
NSNumber(value: Int(0))
)
),
]
for testCase in trueJSON {
XCTAssertTrue(JSONSerialization.isValidJSONObject(testCase))
}
// [Any?.none]
let optionalAny: Any? = nil
let anyArray: [Any] = [optionalAny as Any]
XCTAssertTrue(JSONSerialization.isValidJSONObject(anyArray))
}
func test_isValidJSONObjectFalse() {
var falseJSON = [Any]()
falseJSON.append(NSNumber(value: Int(0)))
falseJSON.append(NSNull())
falseJSON.append("string")
falseJSON.append(Array<Any>(arrayLiteral:
NSNumber(value: Int(1)),
NSNumber(value: Int(2)),
NSNumber(value: Int(3)),
Dictionary<NSNumber, Any>(dictionaryLiteral:
(
NSNumber(value: Int(4)),
NSNumber(value: Int(5))
)
)
))
let one = NSNumber(value: Int(1))
let two = NSNumber(value: Int(2))
let divo = NSNumber(value: Double(1) / Double(0))
falseJSON.append([one, two, divo])
falseJSON.append([NSNull() : NSNumber(value: Int(1))])
falseJSON.append(Array<Any>(arrayLiteral:
Array<Any>(arrayLiteral:
Array<Any>(arrayLiteral:
Dictionary<NSNumber, Any>(dictionaryLiteral:
(
NSNumber(value: Int(1)),
NSNumber(value: Int(2))
)
)
)
)
))
for testCase in falseJSON {
XCTAssertFalse(JSONSerialization.isValidJSONObject(testCase))
}
}
func test_validNumericJSONObjects() {
// All of the numeric types supported by JSONSerialization
XCTAssertTrue(JSONSerialization.isValidJSONObject([nil, NSNull()]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([true, false]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([Int.min, Int8.min, Int16.min, Int32.min, Int64.min]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([UInt.min, UInt8.min, UInt16.min, UInt32.min, UInt64.min]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([Float.leastNonzeroMagnitude, Double.leastNonzeroMagnitude]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([NSNumber(value: true), NSNumber(value: Float.greatestFiniteMagnitude), NSNumber(value: Double.greatestFiniteMagnitude)]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([NSNumber(value: Int.max), NSNumber(value: Int8.max), NSNumber(value: Int16.max), NSNumber(value: Int32.max), NSNumber(value: Int64.max)]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([NSNumber(value: UInt.max), NSNumber(value: UInt8.max), NSNumber(value: UInt16.max), NSNumber(value: UInt32.max), NSNumber(value: UInt64.max)]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([NSDecimalNumber(booleanLiteral: true), NSDecimalNumber(decimal: Decimal.greatestFiniteMagnitude), NSDecimalNumber(floatLiteral: Double.greatestFiniteMagnitude), NSDecimalNumber(integerLiteral: Int.min)]))
XCTAssertTrue(JSONSerialization.isValidJSONObject([Decimal(123), Decimal(Double.leastNonzeroMagnitude)]))
XCTAssertFalse(JSONSerialization.isValidJSONObject(Float.nan))
XCTAssertFalse(JSONSerialization.isValidJSONObject(Float.infinity))
XCTAssertFalse(JSONSerialization.isValidJSONObject(-Float.infinity))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSNumber(value: Float.nan)))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSNumber(value: Float.infinity)))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSNumber(value: -Float.infinity)))
XCTAssertFalse(JSONSerialization.isValidJSONObject(Double.nan))
XCTAssertFalse(JSONSerialization.isValidJSONObject(Double.infinity))
XCTAssertFalse(JSONSerialization.isValidJSONObject(-Double.infinity))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSNumber(value: Double.nan)))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSNumber(value: Double.infinity)))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSNumber(value: -Double.infinity)))
XCTAssertFalse(JSONSerialization.isValidJSONObject(NSDecimalNumber(decimal: Decimal(floatLiteral: Double.nan))))
}
}
// MARK: - serializationTests
extension TestJSONSerialization {
class var serializationTests: [(String, (TestJSONSerialization) -> () throws -> Void)] {
return [
("test_serialize_emptyObject", test_serialize_emptyObject),
("test_serialize_null", test_serialize_null),
("test_serialize_complexObject", test_serialize_complexObject),
("test_nested_array", test_nested_array),
("test_nested_dictionary", test_nested_dictionary),
("test_serialize_number", test_serialize_number),
("test_serialize_IntMax", test_serialize_IntMax),
("test_serialize_IntMin", test_serialize_IntMin),
("test_serialize_UIntMax", test_serialize_UIntMax),
("test_serialize_UIntMin", test_serialize_UIntMin),
("test_serialize_8BitSizes", test_serialize_8BitSizes),
("test_serialize_16BitSizes", test_serialize_16BitSizes),
("test_serialize_32BitSizes", test_serialize_32BitSizes),
("test_serialize_64BitSizes", test_serialize_64BitSizes),
("test_serialize_Float", test_serialize_Float),
("test_serialize_Double", test_serialize_Double),
("test_serialize_Decimal", test_serialize_Decimal),
("test_serialize_NSDecimalNumber", test_serialize_NSDecimalNumber),
("test_serialize_stringEscaping", test_serialize_stringEscaping),
("test_jsonReadingOffTheEndOfBuffers", test_jsonReadingOffTheEndOfBuffers),
("test_jsonObjectToOutputStreamBuffer", test_jsonObjectToOutputStreamBuffer),
("test_jsonObjectToOutputStreamFile", test_jsonObjectToOutputStreamFile),
("test_jsonObjectToOutputStreamInsufficientBuffer", test_jsonObjectToOutputStreamInsufficientBuffer),
("test_booleanJSONObject", test_booleanJSONObject),
("test_serialize_dictionaryWithDecimal", test_serialize_dictionaryWithDecimal),
("test_serializeDecimalNumberJSONObject", test_serializeDecimalNumberJSONObject),
("test_serializeSortedKeys", test_serializeSortedKeys),
("test_serializePrettyPrinted", test_serializePrettyPrinted),
]
}
func trySerialize(_ obj: Any, options: JSONSerialization.WritingOptions = []) throws -> String {
let data = try JSONSerialization.data(withJSONObject: obj, options: options)
guard let string = String(data: data, encoding: .utf8) else {
XCTFail("Unable to create string")
return ""
}
return string
}
func test_serialize_emptyObject() {
let dict1 = [String: Any]()
XCTAssertEqual(try trySerialize(dict1), "{}")
let dict2 = [String: NSNumber]()
XCTAssertEqual(try trySerialize(dict2), "{}")