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session-ios/Signal/test/util/ByteParserTest.swift

222 lines
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Swift
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//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
import XCTest
@testable import Signal
class ByteParserTest: SignalBaseTest {
override func setUp() {
super.setUp()
}
override func tearDown() {
// Put teardown code here. This method is called after the invocation of each test method in the class.
super.tearDown()
}
func testGetShort_Empty() {
let parser = ByteParser(data: Data(), littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextShort())
XCTAssertTrue(parser.hasError)
}
func testGetShort_littleEndian() {
let data = Data(bytes: [0x01, 0x00, 0x00, 0x01, 0x01, 0x01 ])
let parser = ByteParser(data: data, littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(1, parser.nextShort())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(256, parser.nextShort())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(257, parser.nextShort())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextShort())
XCTAssertTrue(parser.hasError)
}
func testGetShort_bigEndian() {
let data = Data(bytes: [0x01, 0x00, 0x00, 0x01, 0x01, 0x01 ])
let parser = ByteParser(data: data, littleEndian: false)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(256, parser.nextShort())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(1, parser.nextShort())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(257, parser.nextShort())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextShort())
XCTAssertTrue(parser.hasError)
}
func testGetInt_Empty() {
let parser = ByteParser(data: Data(), littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextInt())
XCTAssertTrue(parser.hasError)
}
func testGetInt_littleEndian() {
let data = Data(bytes: [0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00 ])
let parser = ByteParser(data: data, littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(1, parser.nextInt())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(256, parser.nextInt())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(257, parser.nextInt())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextInt())
XCTAssertTrue(parser.hasError)
}
func testGetInt_bigEndian() {
let data = Data(bytes: [0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01 ])
let parser = ByteParser(data: data, littleEndian: false)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(1, parser.nextInt())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(256, parser.nextInt())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(257, parser.nextInt())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextInt())
XCTAssertTrue(parser.hasError)
}
func testGetLong_Empty() {
let parser = ByteParser(data: Data(), littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextLong())
XCTAssertTrue(parser.hasError)
}
func testGetLong_littleEndian() {
let data = Data(bytes: [0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ])
let parser = ByteParser(data: data, littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(1, parser.nextLong())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(256, parser.nextLong())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(257, parser.nextLong())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextLong())
XCTAssertTrue(parser.hasError)
}
func testGetLong_bigEndian() {
let data = Data(bytes: [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01 ])
let parser = ByteParser(data: data, littleEndian: false)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(1, parser.nextLong())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(256, parser.nextLong())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(257, parser.nextLong())
XCTAssertFalse(parser.hasError)
XCTAssertEqual(0, parser.nextLong())
XCTAssertTrue(parser.hasError)
}
func testReadZero_Empty() {
let parser = ByteParser(data: Data(), littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertFalse(parser.readZero(1))
XCTAssertTrue(parser.hasError)
}
func testReadZero() {
let data = Data(bytes: [0x00, 0x01, 0x00, 0x00, 0x01, 0x00])
let parser = ByteParser(data: data, littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertTrue(parser.readZero(1))
XCTAssertFalse(parser.hasError)
XCTAssertFalse(parser.readZero(1))
XCTAssertFalse(parser.hasError)
XCTAssertTrue(parser.readZero(2))
XCTAssertFalse(parser.hasError)
XCTAssertFalse(parser.readZero(2))
XCTAssertFalse(parser.hasError)
XCTAssertFalse(parser.readZero(1))
XCTAssertTrue(parser.hasError)
}
func testReadBytes_Empty() {
let parser = ByteParser(data: Data(), littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertNil(parser.readBytes(1))
XCTAssertTrue(parser.hasError)
}
func testReadBytes() {
let data = Data(bytes: [0x00, 0x01, 0x02, 0x03, 0x04, 0x05])
let parser = ByteParser(data: data, littleEndian: true)
XCTAssertNotNil(parser)
XCTAssertFalse(parser.hasError)
XCTAssertEqual(Data(bytes: [0x00 ]), parser.readBytes(1))
XCTAssertFalse(parser.hasError)
XCTAssertEqual(Data(bytes: [0x01 ]), parser.readBytes(1))
XCTAssertFalse(parser.hasError)
XCTAssertEqual(Data(bytes: [0x02, 0x03]), parser.readBytes(2))
XCTAssertFalse(parser.hasError)
XCTAssertEqual(Data(bytes: [0x04, 0x05]), parser.readBytes(2))
XCTAssertFalse(parser.hasError)
XCTAssertNil(parser.readBytes(1))
XCTAssertTrue(parser.hasError)
}
}
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