Added keyed container encoding tests.

Author: kennethlaskoski

Sources/ByteArrayCodable/Decoder/SingleValueDecodingContainer.swift

@@ -1,8 +1,6 @@
 //  Copyright Kenneth Laskoski. All Rights Reserved.
 //  SPDX-License-Identifier: MIT
 
-import Foundation
-
 extension ByteArrayDecoder {
   final class SingleValueContainer: SingleValueDecodingContainer {
     private let decoder: ByteArrayDecoder
@@ -57,7 +55,7 @@ extension ByteArrayDecoder {
       try T(from: decoder)
     }
 
-// MARK: - Protocol implementation
+// MARK: - Protocol properties
 
     public var codingPath: [CodingKey]
   }

Tests/ByteArrayCodableTests/EncodigTests/KeyedEncodingTest.swift

@@ -30,9 +30,9 @@ final class KeyedEncodingTest: XCTestCase {
 
   func testStruct() throws {
     struct EncodableStruct: Encodable {
-      let int: Int = 0
+      let int: Int = 42
       let double: Double = .pi
-      let string: String = "Hello"
+      let string: String = "你好"
     }
 
     XCTAssertEqual(
@@ -42,9 +42,9 @@ final class KeyedEncodingTest: XCTestCase {
         0x64,0x6f,0x75,0x62,0x6c,0x65,0,
         0x40,0x09,0x21,0xfb,0x54,0x44,0x2d,0x18,
         0x69,0x6e,0x74,0,
-        0,0,0,0,0,0,0,0,
+        0,0,0,0,0,0,0,0x2a,
         0x73,0x74,0x72,0x69,0x6e,0x67,0,
-        0x48,0x65,0x6c,0x6c,0x6f,0,
+        0xe4,0xbd,0xa0,0xe5,0xa5,0xbd,0,
       ]
     )
   }