Added byte encoding tests

Author: dimitribouniol

Tests/WebPushTests/BytesTests.swift

@@ -0,0 +1,25 @@
+//
+//  BytesTests.swift
+//  swift-webpush
+//
+//  Created by Dimitri Bouniol on 2024-12-22.
+//  Copyright © 2024 Mochi Development, Inc. All rights reserved.
+//
+
+import Foundation
+import Testing
+@testable import WebPush
+
+@Suite struct BytesTests {
+    @Test func stringBytes() {
+        #expect("hello".utf8Bytes == [0x68, 0x65, 0x6c, 0x6c, 0x6f])
+        #expect("hello"[...].utf8Bytes == [0x68, 0x65, 0x6c, 0x6c, 0x6f])
+    }
+    
+    @Test func integerBytes() {
+        #expect(UInt8(0b11110000).bigEndianBytes == [0b11110000])
+        #expect(UInt16(0b1111000010100101).bigEndianBytes == [0b11110000, 0b10100101])
+        #expect(UInt32(0b11110000101001010000111101011010).bigEndianBytes == [0b11110000, 0b10100101, 0b000001111, 0b01011010])
+        #expect(UInt64(0b1111000010100101000011110101101011001100100011110011001101110000).bigEndianBytes == [0b11110000, 0b10100101, 0b000001111, 0b01011010, 0b11001100, 0b10001111, 0b00110011, 0b01110000])
+    }
+}