Check offset for correctness in non-zero-start-index tests of byte/bit readers

Author: tsolomko

Tests/BitByteDataTests/ByteReaderTests.swift

@@ -107,8 +107,11 @@ class ByteReaderTests: XCTestCase {
 
     func testNonZeroStartIndex() {
         let byteReader = ByteReader(data: ByteReaderTests.data[1...])
+        XCTAssertEqual(byteReader.offset, 1)
         XCTAssertEqual(byteReader.uint16(), 0x0201)
+        XCTAssertEqual(byteReader.offset, 3)
         XCTAssertEqual(byteReader.uint32(), 0x06050403)
+        XCTAssertEqual(byteReader.offset, 7)
         XCTAssertEqual(byteReader.byte(), 0x07)
         XCTAssertEqual(byteReader.bytes(count: 1), [0x08])
     }

Tests/BitByteDataTests/LsbBitReaderTests.swift

@@ -254,10 +254,13 @@ class LsbBitReaderTests: XCTestCase {
 
     func testBitReaderNonZeroStartIndex() {
         var bitReader = LsbBitReader(data: LsbBitReaderTests.data[1...])
+        XCTAssertEqual(bitReader.offset, 1)
         XCTAssertEqual(bitReader.byte(), 0xD6)
         bitReader = LsbBitReader(data: LsbBitReaderTests.data[1...])
+        XCTAssertEqual(bitReader.offset, 1)
         XCTAssertEqual(bitReader.bytes(count: 1), [0xD6])
         bitReader = LsbBitReader(data: LsbBitReaderTests.data[1...])
+        XCTAssertEqual(bitReader.offset, 1)
         XCTAssertEqual(bitReader.bit(), 0)
         XCTAssertEqual(bitReader.bits(count: 3), [1, 1, 0])
         XCTAssertEqual(bitReader.int(fromBits: 4), 13)

Tests/BitByteDataTests/MsbBitReaderTests.swift

@@ -254,10 +254,13 @@ class MsbBitReaderTests: XCTestCase {
 
     func testBitReaderNonZeroStartIndex() {
         var bitReader = MsbBitReader(data: MsbBitReaderTests.data[1...])
+        XCTAssertEqual(bitReader.offset, 1)
         XCTAssertEqual(bitReader.byte(), 0xD6)
         bitReader = MsbBitReader(data: MsbBitReaderTests.data[1...])
+        XCTAssertEqual(bitReader.offset, 1)
         XCTAssertEqual(bitReader.bytes(count: 1), [0xD6])
         bitReader = MsbBitReader(data: MsbBitReaderTests.data[1...])
+        XCTAssertEqual(bitReader.offset, 1)
         XCTAssertEqual(bitReader.bit(), 1)
         XCTAssertEqual(bitReader.bits(count: 3), [1, 0, 1])
         XCTAssertEqual(bitReader.int(fromBits: 4), 6)