Added vapid key tests

Author: dimitribouniol

Tests/WebPushTests/VAPIDKeyTests.swift

@@ -0,0 +1,102 @@
+//
+//  VAPIDKeyTests.swift
+//  swift-webpush
+//
+//  Created by Dimitri Bouniol on 2024-12-22.
+//  Copyright © 2024 Mochi Development, Inc. All rights reserved.
+//
+
+import Crypto
+import Foundation
+import Testing
+@testable import WebPush
+import WebPushTesting
+
+@Suite("VAPID Key Tests") struct VAPIDKeyTests {
+    @Suite struct Initialization {
+        @Test func createNew() {
+            let key = VAPID.Key()
+            #expect(!key.id.description.isEmpty)
+        }
+        
+        @Test func privateKey() {
+            let privateKey = P256.Signing.PrivateKey()
+            let key = VAPID.Key(privateKey: privateKey)
+            #expect(key.id.description == privateKey.publicKey.x963Representation.base64URLEncodedString())
+        }
+        
+        @Test func base64Representation() throws {
+            let key = try VAPID.Key(base64URLEncoded: "6PSSAJiMj7uOvtE4ymNo5GWcZbT226c5KlV6c+8fx5g=")
+            #expect(key.id.description == "BKO3ND8PZ4w3TMdjUE-VFLmwKoawWnfU_fHtp2G55mgOQdCY9sf2b9LjVbmItinpRPMC4qv_9GE9bSDYJ0jaErE")
+            
+            #expect(throws: Base64URLDecodingError()) {
+                try VAPID.Key(base64URLEncoded: "()")
+            }
+            
+            #expect(throws: CryptoKitError.self) {
+                try VAPID.Key(base64URLEncoded: "AAAA")
+            }
+        }
+    }
+    
+    @Test func equality() throws {
+        let key1 = VAPID.Key.mockedKey1
+        let key2 = VAPID.Key.mockedKey2
+        let key3 = VAPID.Key(privateKey: try .init(rawRepresentation: Data(base64URLEncoded: "FniTgSrf0l+BdfeC6LiblKXBbY4LQm0S+4STNCoJI+0=")!))
+        
+        #expect(key1 != key2)
+        #expect(key1 == .mockedKey1)
+        #expect(key1 == key3)
+        #expect(key1.hashValue == key3.hashValue)
+    }
+    
+    @Suite struct Coding {
+        @Test func encoding() throws {
+            #expect(String(decoding: try JSONEncoder().encode(VAPID.Key.mockedKey1), as: UTF8.self) == "\"FniTgSrf0l+BdfeC6LiblKXBbY4LQm0S+4STNCoJI+0=\"")
+        }
+        
+        @Test func decoding() throws {
+            #expect(try JSONDecoder().decode(VAPID.Key.self, from: Data("\"FniTgSrf0l+BdfeC6LiblKXBbY4LQm0S+4STNCoJI+0=\"".utf8)) == .mockedKey1)
+            
+            #expect(throws: DecodingError.self) {
+                try JSONDecoder().decode(VAPID.Key.self, from: Data("{}".utf8))
+            }
+            
+            #expect(throws: DecodingError.self) {
+                try JSONDecoder().decode(VAPID.Key.self, from: Data("\"()\"".utf8))
+            }
+            
+            #expect(throws: CryptoKitError.self) {
+                try JSONDecoder().decode(VAPID.Key.self, from: Data("\"\"".utf8))
+            }
+            
+            #expect(throws: CryptoKitError.self) {
+                try JSONDecoder().decode(VAPID.Key.self, from: Data("\"AAAA\"".utf8))
+            }
+        }
+    }
+    
+    @Suite struct Identification {
+        @Test func comparable() {
+            #expect([
+                VAPID.Key.ID.mockedKeyID1,
+                VAPID.Key.ID.mockedKeyID2,
+                VAPID.Key.ID.mockedKeyID3,
+                VAPID.Key.ID.mockedKeyID4,
+            ].sorted() == [
+                VAPID.Key.ID.mockedKeyID2,
+                VAPID.Key.ID.mockedKeyID4,
+                VAPID.Key.ID.mockedKeyID1,
+                VAPID.Key.ID.mockedKeyID3,
+            ])
+        }
+        
+        @Test func encoding() throws {
+            #expect(String(decoding: try JSONEncoder().encode(VAPID.Key.ID.mockedKeyID1), as: UTF8.self) == "\"BLf3RZAljlexEovBgfZgFTjcEVUKBDr3lIH8quJioMdX4FweRdId_P72h613ptxtU-qSAyW3Tbt_3WgwGhOUxrs\"")
+        }
+        
+        @Test func decoding() throws {
+            #expect(try JSONDecoder().decode(VAPID.Key.ID.self, from: Data("\"BLf3RZAljlexEovBgfZgFTjcEVUKBDr3lIH8quJioMdX4FweRdId_P72h613ptxtU-qSAyW3Tbt_3WgwGhOUxrs\"".utf8)) == .mockedKeyID1)
+        }
+    }
+}