diff --git a/jwt_verification.ts b/jwt_verification.ts
index 1d94329..e2ce194 100644
--- a/jwt_verification.ts
+++ b/jwt_verification.ts
@@ -85,7 +85,12 @@ export class SignedDataVerifier {
      * @throws VerificationException Thrown if the data could not be verified
      */
     async verifyAndDecodeRenewalInfo(signedRenewalInfo: string): Promise<JWSRenewalInfoDecodedPayload> {
-      return this.verifyJWT(signedRenewalInfo, this.JWSRenewalInfoDecodedPayloadValidator, this.extractSignedDate);
+      const decodedRenewalInfo: JWSRenewalInfoDecodedPayload = await this.verifyJWT(signedRenewalInfo, this.JWSRenewalInfoDecodedPayloadValidator, this.extractSignedDate);
+      const environment = decodedRenewalInfo.environment
+      if (this.environment !== environment) {
+        throw new VerificationException(VerificationStatus.INVALID_ENVIRONMENT)
+      }
+      return decodedRenewalInfo
     }
 
     /**
@@ -100,7 +105,7 @@ export class SignedDataVerifier {
       const appAppleId = decodedJWT.data ? decodedJWT.data.appAppleId : (decodedJWT.summary ? decodedJWT.summary.appAppleId : null)
       const bundleId = decodedJWT.data ? decodedJWT.data.bundleId : (decodedJWT.summary ? decodedJWT.summary.bundleId : null)
       const environment = decodedJWT.data ? decodedJWT.data.environment : (decodedJWT.summary ? decodedJWT.summary.environment : null)
-      if (this.bundleId !== bundleId || (this.environment === "Production" && this.appAppleId !== appAppleId)) {
+      if (this.bundleId !== bundleId || (this.environment === Environment.PRODUCTION && this.appAppleId !== appAppleId)) {
         throw new VerificationException(VerificationStatus.INVALID_APP_IDENTIFIER)
       }
       if (this.environment !== environment) {
@@ -118,7 +123,7 @@ export class SignedDataVerifier {
     async verifyAndDecodeAppTransaction(signedAppTransaction: string): Promise<AppTransaction> {
       const decodedAppTransaction: AppTransaction = await this.verifyJWT(signedAppTransaction, this.appTransactionValidator, t => t.receiptCreationDate === undefined ? new Date() : new Date(t.receiptCreationDate));
       const environment = decodedAppTransaction.receiptType
-      if (this.bundleId !== decodedAppTransaction.bundleId || (this.environment === "Production" && this.appAppleId !== decodedAppTransaction.appAppleId)) {
+      if (this.bundleId !== decodedAppTransaction.bundleId || (this.environment === Environment.PRODUCTION && this.appAppleId !== decodedAppTransaction.appAppleId)) {
         throw new VerificationException(VerificationStatus.INVALID_APP_IDENTIFIER)
       }
       if (this.environment !== environment) {
@@ -129,27 +134,33 @@ export class SignedDataVerifier {
 
     protected async verifyJWT<T>(jwt: string, validator: Validator<T>, signedDateExtractor: (decodedJWT: T) => Date): Promise<T> {
       let certificateChain;
+      let decodedJWT
       try {
-        const header = jwt.split('.')[0]
-        const decodedHeader = base64url.decode(header)
-        const headerObj = JSON.parse(decodedHeader)
-        const chain: string[] = headerObj['x5c'] ?? []
-        if (chain.length != 3) {
-          throw new VerificationException(VerificationStatus.INVALID_CHAIN_LENGTH)
-        }
-        certificateChain = chain.slice(0, 2).map(cert => new X509Certificate(Buffer.from(cert, 'base64')))
-      } catch (error) {
-        if (error instanceof Error) {
-          throw new VerificationException(VerificationStatus.INVALID_CERTIFICATE, error)
-        }
-        throw new VerificationException(VerificationStatus.INVALID_CERTIFICATE)
-      }
-      try {
-        const decodedJWT = jsonwebtoken.decode(jwt)
+        decodedJWT = jsonwebtoken.decode(jwt)
         if (!validator.validate(decodedJWT)) {
           throw new VerificationException(VerificationStatus.FAILURE)
         }
-        const effectiveDate = this.enableOnlineChecks  ? new Date() : signedDateExtractor(decodedJWT)
+        if (this.environment === Environment.XCODE || this.environment === Environment.LOCAL_TESTING) {
+          // Data is not signed by the App Store, and verification should be skipped
+          // The environment MUST be checked in the public method calling this
+          return decodedJWT
+        }
+        try {
+          const header = jwt.split('.')[0]
+          const decodedHeader = base64url.decode(header)
+          const headerObj = JSON.parse(decodedHeader)
+          const chain: string[] = headerObj['x5c'] ?? []
+          if (chain.length != 3) {
+            throw new VerificationException(VerificationStatus.INVALID_CHAIN_LENGTH)
+          }
+          certificateChain = chain.slice(0, 2).map(cert => new X509Certificate(Buffer.from(cert, 'base64')))
+        } catch (error) {
+          if (error instanceof Error) {
+            throw new VerificationException(VerificationStatus.INVALID_CERTIFICATE, error)
+          }
+          throw new VerificationException(VerificationStatus.INVALID_CERTIFICATE)
+        }
+        const effectiveDate = this.enableOnlineChecks ? new Date() : signedDateExtractor(decodedJWT)
         const publicKey = await this.verifyCertificateChain(this.rootCertificates, certificateChain[0], certificateChain[1], effectiveDate);
         const encodedKey = publicKey.export({
           type: "spki",
diff --git a/models/Environment.ts b/models/Environment.ts
index 8f943b0..9be7b41 100644
--- a/models/Environment.ts
+++ b/models/Environment.ts
@@ -10,6 +10,8 @@ import { Validator } from "./Validator";
 export enum Environment {
     SANDBOX = "Sandbox",
     PRODUCTION = "Production",
+    XCODE = "Xcode",
+    LOCAL_TESTING = "LocalTesting",
 }
 
 export class EnvironmentValidator implements Validator<Environment> {
diff --git a/receipt_utility.ts b/receipt_utility.ts
index 019d46b..f9ac867 100644
--- a/receipt_utility.ts
+++ b/receipt_utility.ts
@@ -15,26 +15,57 @@ export class ReceiptUtility {
      * @returns A transaction id from the array of in-app purchases, null if the receipt contains no in-app purchases
      */
     extractTransactionIdFromAppReceipt(appReceipt: string): string | null {
-        const receiptInfo = ASN1HEX.getVbyList(Buffer.from(appReceipt, 'base64').toString('hex'), 0, [1, 0, 2, 1, 0]) as string
-        let index = 0;
-        while(ASN1HEX.getVbyList(receiptInfo, 0, [index, 0])) {
-            const val = ASN1HEX.getVbyList(receiptInfo, 0, [index, 0]) as string
-            if (IN_APP_TYPE_ID === parseInt(val, 16)) {
-                const inAppInfo = ASN1HEX.getVbyList(receiptInfo, 0, [index, 2]) as string
-                let inAppIndex = 0;
-                while(ASN1HEX.getVbyList(inAppInfo, 0, [inAppIndex, 0])) {
-                    const val = ASN1HEX.getVbyList(inAppInfo, 0, [inAppIndex, 0]) as string
-                    if (TRANSACTION_IDENTIFIER_TYPE_ID === parseInt(val, 16) || ORIGINAL_TRANSACTION_IDENTIFIER_TYPE_ID === parseInt(val, 16)) {
-                        const transactionIdUTF8String = ASN1HEX.getVbyList(inAppInfo, 0, [inAppIndex, 2]) as string
-                        const transactionId = ASN1HEX.getVbyList(transactionIdUTF8String, 0, []) as string
-                        return Buffer.from(transactionId, 'hex').toString()
+        // Xcode receipts use indefinite length encoding, not supported by all parsers
+        // Indefinite length encoding is only entered, but never left during parsing for receipts
+        // We therefore round up indefinite length encoding to be the remaining length
+        const prevGetVblenFunction = ASN1HEX.getVblen
+        ASN1HEX.getVblen = function(s, idx) {
+            const c = ASN1HEX.getL(s, idx)
+            const oldResult = prevGetVblenFunction(s, idx)
+            // Round up to the remaining length in the string, measured in bytes (2 hex values per byte)
+            if (oldResult === 0 && c === '80') {
+                return (s.length - idx) / 2
+            }
+            return oldResult
+        }
+        const prevGetLblen = ASN1HEX.getLblen
+        ASN1HEX.getLblen = function(s, idx) {
+            const oldResult = prevGetLblen(s, idx)
+            // The length for the length byte for 80 00 is 1
+            if (oldResult == -1) {
+                return 1
+            }
+            return oldResult
+        }
+        try {
+            let receiptInfo = ASN1HEX.getVbyList(Buffer.from(appReceipt, 'base64').toString('hex'), 0, [1, 0, 2, 1, 0]) as string
+            if (receiptInfo.length > 2 && receiptInfo.startsWith('04')) {
+                // We are still in an Octet String, Xcode wraps with an extra Octet, decode it here
+                receiptInfo = ASN1HEX.getV(receiptInfo, 0)
+            }
+            let index = 0;
+            while(ASN1HEX.getVbyList(receiptInfo, 0, [index, 0])) {
+                const val = ASN1HEX.getVbyList(receiptInfo, 0, [index, 0]) as string
+                if (IN_APP_TYPE_ID === parseInt(val, 16)) {
+                    const inAppInfo = ASN1HEX.getVbyList(receiptInfo, 0, [index, 2]) as string
+                    let inAppIndex = 0;
+                    while(ASN1HEX.getVbyList(inAppInfo, 0, [inAppIndex, 0])) {
+                        const val = ASN1HEX.getVbyList(inAppInfo, 0, [inAppIndex, 0]) as string
+                        if (TRANSACTION_IDENTIFIER_TYPE_ID === parseInt(val, 16) || ORIGINAL_TRANSACTION_IDENTIFIER_TYPE_ID === parseInt(val, 16)) {
+                            const transactionIdUTF8String = ASN1HEX.getVbyList(inAppInfo, 0, [inAppIndex, 2]) as string
+                            const transactionId = ASN1HEX.getVbyList(transactionIdUTF8String, 0, []) as string
+                            return Buffer.from(transactionId, 'hex').toString()
+                        }
+                        inAppIndex = inAppIndex + 1
                     }
-                    inAppIndex = inAppIndex + 1
                 }
+                index = index + 1
             }
-            index = index + 1
+            return null
+        } finally {
+            ASN1HEX.getLblen = prevGetLblen
+            ASN1HEX.getVblen = prevGetVblenFunction
         }
-        return null
     }
 
     /**
diff --git a/tests/resources/certs/testCA.der b/tests/resources/certs/testCA.der
new file mode 100644
index 0000000..54a42b6
Binary files /dev/null and b/tests/resources/certs/testCA.der differ
diff --git a/tests/resources/certs/testSigningKey.p8 b/tests/resources/certs/testSigningKey.p8
new file mode 100644
index 0000000..0622800
--- /dev/null
+++ b/tests/resources/certs/testSigningKey.p8
@@ -0,0 +1,5 @@
+-----BEGIN PRIVATE KEY-----
+MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgSpP55ELdXswj9JRZ
+APRwtTfS4CNRqpKIs+28rNHiPAqhRANCAASs8nLES7b+goKslppNVOurf0MonZdw
+3pb6TxS8Z/5j+UNY1sWK1ChxpuwNS9I3R50cfdQo/lA9PPhw6XIg8ytd
+-----END PRIVATE KEY-----
diff --git a/tests/resources/mock_signed_data/legacyTransaction b/tests/resources/mock_signed_data/legacyTransaction
new file mode 100644
index 0000000..534391d
--- /dev/null
+++ b/tests/resources/mock_signed_data/legacyTransaction
@@ -0,0 +1 @@
+ewoicHVyY2hhc2UtaW5mbyIgPSAiZXdvaWRISmhibk5oWTNScGIyNHRhV1FpSUQwZ0lqTXpPVGt6TXprNUlqc0tmUW89IjsKfQo=
\ No newline at end of file
diff --git a/tests/resources/mock_signed_data/missingX5CHeaderClaim b/tests/resources/mock_signed_data/missingX5CHeaderClaim
new file mode 100644
index 0000000..b4112b4
--- /dev/null
+++ b/tests/resources/mock_signed_data/missingX5CHeaderClaim
@@ -0,0 +1 @@
+eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsIng1Y3dyb25nIjpbIk1JSUJvRENDQVVhZ0F3SUJBZ0lCRERBS0JnZ3Foa2pPUFFRREF6QkZNUXN3Q1FZRFZRUUdFd0pWVXpFTE1Ba0dBMVVFQ0F3Q1EwRXhFakFRQmdOVkJBY01DVU4xY0dWeWRHbHViekVWTUJNR0ExVUVDZ3dNU1c1MFpYSnRaV1JwWVhSbE1CNFhEVEl6TURFd05USXhNekV6TkZvWERUTXpNREV3TVRJeE16RXpORm93UFRFTE1Ba0dBMVVFQmhNQ1ZWTXhDekFKQmdOVkJBZ01Ba05CTVJJd0VBWURWUVFIREFsRGRYQmxjblJwYm04eERUQUxCZ05WQkFvTUJFeGxZV1l3V1RBVEJnY3Foa2pPUFFJQkJnZ3Foa2pPUFFNQkJ3TkNBQVRpdFlIRWFZVnVjOGc5QWpUT3dFck12R3lQeWtQYStwdXZUSThoSlRIWlpETEdhczJxWDErRXJ4Z1FUSmdWWHY3Nm5tTGhoUkpIK2oyNUFpQUk4aUdzb3k4d0xUQUpCZ05WSFJNRUFqQUFNQTRHQTFVZER3RUIvd1FFQXdJSGdEQVFCZ29xaGtpRzkyTmtCZ3NCQkFJRkFEQUtCZ2dxaGtqT1BRUURBd05JQURCRkFpQlg0YytUMEZwNW5KNVFSQ2xSZnU1UFNCeVJ2TlB0dWFUc2swdlBCM1dBSUFJaEFOZ2FhdUFqL1lQOXMwQWtFaHlKaHhRTy82UTJ6b3VaK0gxQ0lPZWhuTXpRIiwiTUlJQm56Q0NBVVdnQXdJQkFnSUJDekFLQmdncWhrak9QUVFEQXpBMk1Rc3dDUVlEVlFRR0V3SlZVekVUTUJFR0ExVUVDQXdLUTJGc2FXWnZjbTVwWVRFU01CQUdBMVVFQnd3SlEzVndaWEowYVc1dk1CNFhEVEl6TURFd05USXhNekV3TlZvWERUTXpNREV3TVRJeE16RXdOVm93UlRFTE1Ba0dBMVVFQmhNQ1ZWTXhDekFKQmdOVkJBZ01Ba05CTVJJd0VBWURWUVFIREFsRGRYQmxjblJwYm04eEZUQVRCZ05WQkFvTURFbHVkR1Z5YldWa2FXRjBaVEJaTUJNR0J5cUdTTTQ5QWdFR0NDcUdTTTQ5QXdFSEEwSUFCQlVONVY5cktqZlJpTUFJb2pFQTBBdjVNcDBvRitPMGNMNGd6clRGMTc4aW5VSHVnajdFdDQ2TnJrUTdoS2dNVm5qb2dxNDVRMXJNcytjTUhWTklMV3FqTlRBek1BOEdBMVVkRXdRSU1BWUJBZjhDQVFBd0RnWURWUjBQQVFIL0JBUURBZ0VHTUJBR0NpcUdTSWIzWTJRR0FnRUVBZ1VBTUFvR0NDcUdTTTQ5QkFNREEwZ0FNRVVDSVFDbXNJS1lzNDF1bGxzc0hYNHJWdmVVVDBaN0lzNS9oTEsxbEZQVHR1bjNoQUlnYzIrMlJHNStnTmNGVmNzK1hKZUVsNEdaK29qbDNST09tbGwreWU3ZHluUT0iLCJNSUlCZ2pDQ0FTbWdBd0lCQWdJSkFMVWM1QUxpSDVwYk1Bb0dDQ3FHU000OUJBTURNRFl4Q3pBSkJnTlZCQVlUQWxWVE1STXdFUVlEVlFRSURBcERZV3hwWm05eWJtbGhNUkl3RUFZRFZRUUhEQWxEZFhCbGNuUnBibTh3SGhjTk1qTXdNVEExTWpFek1ESXlXaGNOTXpNd01UQXlNakV6TURJeVdqQTJNUXN3Q1FZRFZRUUdFd0pWVXpFVE1CRUdBMVVFQ0F3S1EyRnNhV1p2Y201cFlURVNNQkFHQTFVRUJ3d0pRM1Z3WlhKMGFXNXZNRmt3RXdZSEtvWkl6ajBDQVFZSUtvWkl6ajBEQVFjRFFnQUVjKy9CbCtnb3NwbzZ0ZjlaN2lvNXRkS2RybE4xWWRWbnFFaEVEWERTaHpkQUpQUWlqYW1YSU1IZjh4V1dUYTF6Z29ZVHhPS3BidUp0RHBsejFYcmlUYU1nTUI0d0RBWURWUjBUQkFVd0F3RUIvekFPQmdOVkhROEJBZjhFQkFNQ0FRWXdDZ1lJS29aSXpqMEVBd01EUndBd1JBSWdlbVdRWG5NQWRUYWQySkRKV25nOVU0dUJCTDVtQTdXSTA1SDdvSDdjNmlRQ0lIaVJxTWpOZnpVQXlpdTloNnJPVS9LK2lUUjBJLzNZL05TV3NYSFgrYWNjIl19.eyJkYXRhIjp7ImJ1bmRsZUlkIjoiY29tLmV4YW1wbGUifSwibm90aWZpY2F0aW9uVVVJRCI6IjlhZDU2YmQyLTBiYzYtNDJlMC1hZjI0LWZkOTk2ZDg3YTFlNiIsIm5vdGlmaWNhdGlvblR5cGUiOiJURVNUIn0.1TFhjDR4WwQJNgizVGYXz3WE3ajxTdH1wKLQQ71MtrkadSxxOo3yPo_6L9Z03unIU7YK-NRNzSIb5bh5WqTprQ
\ No newline at end of file
diff --git a/tests/resources/mock_signed_data/renewalInfo b/tests/resources/mock_signed_data/renewalInfo
new file mode 100644
index 0000000..d14a20d
--- /dev/null
+++ b/tests/resources/mock_signed_data/renewalInfo
@@ -0,0 +1 @@
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.eyJlbnZpcm9ubWVudCI6IlNhbmRib3giLCJzaWduZWREYXRlIjoxNjcyOTU2MTU0MDAwfQ.FbK2OL-t6l4892W7fzWyus_g9mIl2CzWLbVt7Kgcnt6zzVulF8bzovgpe0v_y490blROGixy8KDoe2dSU53-Xw
\ No newline at end of file
diff --git a/tests/resources/mock_signed_data/testNotification b/tests/resources/mock_signed_data/testNotification
new file mode 100644
index 0000000..7bb78cf
--- /dev/null
+++ b/tests/resources/mock_signed_data/testNotification
@@ -0,0 +1 @@
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.eyJkYXRhIjp7ImFwcEFwcGxlSWQiOjEyMzQsImVudmlyb25tZW50IjoiU2FuZGJveCIsImJ1bmRsZUlkIjoiY29tLmV4YW1wbGUifSwibm90aWZpY2F0aW9uVVVJRCI6IjlhZDU2YmQyLTBiYzYtNDJlMC1hZjI0LWZkOTk2ZDg3YTFlNiIsInNpZ25lZERhdGUiOjE2ODEzMTQzMjQwMDAsIm5vdGlmaWNhdGlvblR5cGUiOiJURVNUIn0.VVXYwuNm2Y3XsOUva-BozqatRCsDuykA7xIe_CCRw6aIAAxJ1nb2sw871jfZ6dcgNhUuhoZ93hfbc1v_5zB7Og
\ No newline at end of file
diff --git a/tests/resources/mock_signed_data/transactionInfo b/tests/resources/mock_signed_data/transactionInfo
new file mode 100644
index 0000000..3ddf0b0
--- /dev/null
+++ b/tests/resources/mock_signed_data/transactionInfo
@@ -0,0 +1 @@
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.eyJlbnZpcm9ubWVudCI6IlNhbmRib3giLCJidW5kbGVJZCI6ImNvbS5leGFtcGxlIiwic2lnbmVkRGF0ZSI6MTY3Mjk1NjE1NDAwMH0.PnHWpeIJZ8f2Q218NSGLo_aR0IBEJvC6PxmxKXh-qfYTrZccx2suGl223OSNAX78e4Ylf2yJCG2N-FfU-NIhZQ
\ No newline at end of file
diff --git a/tests/resources/mock_signed_data/wrongBundleId b/tests/resources/mock_signed_data/wrongBundleId
new file mode 100644
index 0000000..cc7091e
--- /dev/null
+++ b/tests/resources/mock_signed_data/wrongBundleId
@@ -0,0 +1 @@
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.eyJkYXRhIjp7ImJ1bmRsZUlkIjoiY29tLmV4YW1wbGUud3JvbmcifSwibm90aWZpY2F0aW9uVVVJRCI6IjlhZDU2YmQyLTBiYzYtNDJlMC1hZjI0LWZkOTk2ZDg3YTFlNiIsIm5vdGlmaWNhdGlvblR5cGUiOiJURVNUIn0.WWE31hTB_mcv2O_lf-xI-MNY3d8txc0MzpqFx4QnYDfFIxB95Lo2Fm3r46YSjLLdL7xCWdEJrJP5bHgRCejAGg
\ No newline at end of file
diff --git a/tests/resources/models/apiException.json b/tests/resources/models/apiException.json
new file mode 100644
index 0000000..a270c53
--- /dev/null
+++ b/tests/resources/models/apiException.json
@@ -0,0 +1,4 @@
+{
+  "errorCode": 5000000,
+  "errorMessage": "An unknown error occurred."
+}
\ No newline at end of file
diff --git a/tests/resources/models/apiTooManyRequestsException.json b/tests/resources/models/apiTooManyRequestsException.json
new file mode 100644
index 0000000..3b3cb9c
--- /dev/null
+++ b/tests/resources/models/apiTooManyRequestsException.json
@@ -0,0 +1,4 @@
+{
+  "errorCode": 4290000,
+  "errorMessage": "Rate limit exceeded."
+}
\ No newline at end of file
diff --git a/tests/resources/models/apiUnknownError.json b/tests/resources/models/apiUnknownError.json
new file mode 100644
index 0000000..9377dd7
--- /dev/null
+++ b/tests/resources/models/apiUnknownError.json
@@ -0,0 +1,4 @@
+{
+  "errorCode": 9990000,
+  "errorMessage": "Testing error."
+}
\ No newline at end of file
diff --git a/tests/resources/models/appTransaction.json b/tests/resources/models/appTransaction.json
new file mode 100644
index 0000000..b3b937b
--- /dev/null
+++ b/tests/resources/models/appTransaction.json
@@ -0,0 +1,13 @@
+{
+  "receiptType": "LocalTesting",
+  "appAppleId": 531412,
+  "bundleId": "com.example",
+  "applicationVersion": "1.2.3",
+  "versionExternalIdentifier": 512,
+  "receiptCreationDate": 1698148900000,
+  "originalPurchaseDate": 1698148800000,
+  "originalApplicationVersion": "1.1.2",
+  "deviceVerification": "device_verification_value",
+  "deviceVerificationNonce": "48ccfa42-7431-4f22-9908-7e88983e105a",
+  "preorderDate": 1698148700000
+}
\ No newline at end of file
diff --git a/tests/resources/models/extendRenewalDateForAllActiveSubscribersResponse.json b/tests/resources/models/extendRenewalDateForAllActiveSubscribersResponse.json
new file mode 100644
index 0000000..21fd582
--- /dev/null
+++ b/tests/resources/models/extendRenewalDateForAllActiveSubscribersResponse.json
@@ -0,0 +1,3 @@
+{
+  "requestIdentifier": "758883e8-151b-47b7-abd0-60c4d804c2f5"
+}
\ No newline at end of file
diff --git a/tests/resources/models/extendSubscriptionRenewalDateResponse.json b/tests/resources/models/extendSubscriptionRenewalDateResponse.json
new file mode 100644
index 0000000..6c5f89f
--- /dev/null
+++ b/tests/resources/models/extendSubscriptionRenewalDateResponse.json
@@ -0,0 +1,6 @@
+{
+  "originalTransactionId": "2312412",
+  "webOrderLineItemId": "9993",
+  "success": true,
+  "effectiveDate": 1698148900000
+}
\ No newline at end of file
diff --git a/tests/resources/models/getAllSubscriptionStatusesResponse.json b/tests/resources/models/getAllSubscriptionStatusesResponse.json
new file mode 100644
index 0000000..b5d139c
--- /dev/null
+++ b/tests/resources/models/getAllSubscriptionStatusesResponse.json
@@ -0,0 +1,35 @@
+{
+  "environment": "LocalTesting",
+  "bundleId": "com.example",
+  "appAppleId": 5454545,
+  "data": [
+    {
+      "subscriptionGroupIdentifier": "sub_group_one",
+      "lastTransactions": [
+        {
+          "status": 1,
+          "originalTransactionId": "3749183",
+          "signedTransactionInfo": "signed_transaction_one",
+          "signedRenewalInfo": "signed_renewal_one"
+        },
+        {
+          "status": 5,
+          "originalTransactionId": "5314314134",
+          "signedTransactionInfo": "signed_transaction_two",
+          "signedRenewalInfo": "signed_renewal_two"
+        }
+      ]
+    },
+    {
+      "subscriptionGroupIdentifier": "sub_group_two",
+      "lastTransactions": [
+        {
+          "status": 2,
+          "originalTransactionId": "3413453",
+          "signedTransactionInfo": "signed_transaction_three",
+          "signedRenewalInfo": "signed_renewal_three"
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/resources/models/getNotificationHistoryResponse.json b/tests/resources/models/getNotificationHistoryResponse.json
new file mode 100644
index 0000000..75c27b7
--- /dev/null
+++ b/tests/resources/models/getNotificationHistoryResponse.json
@@ -0,0 +1,27 @@
+{
+  "paginationToken": "57715481-805a-4283-8499-1c19b5d6b20a",
+  "hasMore": true,
+  "notificationHistory": [
+    {
+      "sendAttempts": [
+        {
+          "attemptDate": 1698148900000,
+          "sendAttemptResult": "NO_RESPONSE"
+        }, {
+          "attemptDate": 1698148950000,
+          "sendAttemptResult": "SUCCESS"
+        }
+      ],
+      "signedPayload": "signed_payload_one"
+    },
+    {
+      "sendAttempts": [
+        {
+          "attemptDate": 1698148800000,
+          "sendAttemptResult": "CIRCULAR_REDIRECT"
+        }
+      ],
+      "signedPayload": "signed_payload_two"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/resources/models/getRefundHistoryResponse.json b/tests/resources/models/getRefundHistoryResponse.json
new file mode 100644
index 0000000..d1ff65a
--- /dev/null
+++ b/tests/resources/models/getRefundHistoryResponse.json
@@ -0,0 +1,8 @@
+{
+  "signedTransactions": [
+    "signed_transaction_one",
+    "signed_transaction_two"
+  ],
+  "revision": "revision_output",
+  "hasMore": true
+}
\ No newline at end of file
diff --git a/tests/resources/models/getStatusOfSubscriptionRenewalDateExtensionsResponse.json b/tests/resources/models/getStatusOfSubscriptionRenewalDateExtensionsResponse.json
new file mode 100644
index 0000000..9bd7ddc
--- /dev/null
+++ b/tests/resources/models/getStatusOfSubscriptionRenewalDateExtensionsResponse.json
@@ -0,0 +1,7 @@
+{
+  "requestIdentifier": "20fba8a0-2b80-4a7d-a17f-85c1854727f8",
+  "complete": true,
+  "completeDate": 1698148900000,
+  "succeededCount": 30,
+  "failedCount": 2
+}
\ No newline at end of file
diff --git a/tests/resources/models/getTestNotificationStatusResponse.json b/tests/resources/models/getTestNotificationStatusResponse.json
new file mode 100644
index 0000000..9f83b90
--- /dev/null
+++ b/tests/resources/models/getTestNotificationStatusResponse.json
@@ -0,0 +1,12 @@
+{
+  "signedPayload": "signed_payload",
+  "sendAttempts": [
+    {
+      "attemptDate": 1698148900000,
+      "sendAttemptResult": "NO_RESPONSE"
+    }, {
+      "attemptDate": 1698148950000,
+      "sendAttemptResult": "SUCCESS"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/resources/models/lookupOrderIdResponse.json b/tests/resources/models/lookupOrderIdResponse.json
new file mode 100644
index 0000000..09a43d5
--- /dev/null
+++ b/tests/resources/models/lookupOrderIdResponse.json
@@ -0,0 +1,7 @@
+{
+  "status": 1,
+  "signedTransactions": [
+    "signed_transaction_one",
+    "signed_transaction_two"
+  ]
+}
\ No newline at end of file
diff --git a/tests/resources/models/requestTestNotificationResponse.json b/tests/resources/models/requestTestNotificationResponse.json
new file mode 100644
index 0000000..3ecc9e2
--- /dev/null
+++ b/tests/resources/models/requestTestNotificationResponse.json
@@ -0,0 +1,3 @@
+{
+  "testNotificationToken": "ce3af791-365e-4c60-841b-1674b43c1609"
+}
\ No newline at end of file
diff --git a/tests/resources/models/signedNotification.json b/tests/resources/models/signedNotification.json
new file mode 100644
index 0000000..bd473c4
--- /dev/null
+++ b/tests/resources/models/signedNotification.json
@@ -0,0 +1,16 @@
+{
+  "notificationType": "SUBSCRIBED",
+  "subtype": "INITIAL_BUY",
+  "notificationUUID": "002e14d5-51f5-4503-b5a8-c3a1af68eb20",
+  "data": {
+    "environment": "LocalTesting",
+    "appAppleId": 41234,
+    "bundleId": "com.example",
+    "bundleVersion": "1.2.3",
+    "signedTransactionInfo": "signed_transaction_info_value",
+    "signedRenewalInfo": "signed_renewal_info_value",
+    "status": 1
+  },
+  "version": "2.0",
+  "signedDate": 1698148900000
+}
\ No newline at end of file
diff --git a/tests/resources/models/signedRenewalInfo.json b/tests/resources/models/signedRenewalInfo.json
new file mode 100644
index 0000000..17c07a8
--- /dev/null
+++ b/tests/resources/models/signedRenewalInfo.json
@@ -0,0 +1,16 @@
+{
+  "expirationIntent": 1,
+  "originalTransactionId": "12345",
+  "autoRenewProductId": "com.example.product.2",
+  "productId": "com.example.product",
+  "autoRenewStatus": 1,
+  "isInBillingRetryPeriod": true,
+  "priceIncreaseStatus": 0,
+  "gracePeriodExpiresDate": 1698148900000,
+  "offerType": 2,
+  "offerIdentifier": "abc.123",
+  "signedDate": 1698148800000,
+  "environment": "LocalTesting",
+  "recentSubscriptionStartDate": 1698148800000,
+  "renewalDate": 1698148850000
+}
\ No newline at end of file
diff --git a/tests/resources/models/signedSummaryNotification.json b/tests/resources/models/signedSummaryNotification.json
new file mode 100644
index 0000000..3a22ec0
--- /dev/null
+++ b/tests/resources/models/signedSummaryNotification.json
@@ -0,0 +1,21 @@
+{
+  "notificationType": "RENEWAL_EXTENSION",
+  "subtype": "SUMMARY",
+  "notificationUUID": "002e14d5-51f5-4503-b5a8-c3a1af68eb20",
+  "version": "2.0",
+  "signedDate": 1698148900000,
+  "summary": {
+    "environment": "LocalTesting",
+    "appAppleId": 41234,
+    "bundleId": "com.example",
+    "productId": "com.example.product",
+    "requestIdentifier": "efb27071-45a4-4aca-9854-2a1e9146f265",
+    "storefrontCountryCodes": [
+      "CAN",
+      "USA",
+      "MEX"
+    ],
+    "succeededCount": 5,
+    "failedCount": 2
+  }
+}
\ No newline at end of file
diff --git a/tests/resources/models/signedTransaction.json b/tests/resources/models/signedTransaction.json
new file mode 100644
index 0000000..3c44a56
--- /dev/null
+++ b/tests/resources/models/signedTransaction.json
@@ -0,0 +1,25 @@
+{
+  "transactionId":"23456",
+  "originalTransactionId":"12345",
+  "webOrderLineItemId":"34343",
+  "bundleId":"com.example",
+  "productId":"com.example.product",
+  "subscriptionGroupIdentifier":"55555",
+  "purchaseDate":1698148900000,
+  "originalPurchaseDate":1698148800000,
+  "expiresDate":1698149000000,
+  "quantity":1,
+  "type":"Auto-Renewable Subscription",
+  "appAccountToken": "7e3fb20b-4cdb-47cc-936d-99d65f608138",
+  "inAppOwnershipType":"PURCHASED",
+  "signedDate":1698148900000,
+  "revocationReason": 1,
+  "revocationDate": 1698148950000,
+  "isUpgraded": true,
+  "offerType":1,
+  "offerIdentifier": "abc.123",
+  "environment":"LocalTesting",
+  "transactionReason":"PURCHASE",
+  "storefront":"USA",
+  "storefrontId":"143441"
+}
\ No newline at end of file
diff --git a/tests/resources/models/transactionHistoryResponse.json b/tests/resources/models/transactionHistoryResponse.json
new file mode 100644
index 0000000..c5cc638
--- /dev/null
+++ b/tests/resources/models/transactionHistoryResponse.json
@@ -0,0 +1,11 @@
+{
+  "revision": "revision_output",
+  "hasMore": true,
+  "bundleId": "com.example",
+  "appAppleId": 323232,
+  "environment": "LocalTesting",
+  "signedTransactions": [
+    "signed_transaction_value",
+    "signed_transaction_value2"
+  ]
+}
\ No newline at end of file
diff --git a/tests/resources/models/transactionInfoResponse.json b/tests/resources/models/transactionInfoResponse.json
new file mode 100644
index 0000000..57d84e2
--- /dev/null
+++ b/tests/resources/models/transactionInfoResponse.json
@@ -0,0 +1,3 @@
+{
+  "signedTransactionInfo": "signed_transaction_info_value"
+}
\ No newline at end of file
diff --git a/tests/resources/xcode/xcode-app-receipt-empty b/tests/resources/xcode/xcode-app-receipt-empty
new file mode 100644
index 0000000..f5acce8
--- /dev/null
+++ b/tests/resources/xcode/xcode-app-receipt-empty
@@ -0,0 +1 @@
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
\ No newline at end of file
diff --git a/tests/resources/xcode/xcode-app-receipt-with-transaction b/tests/resources/xcode/xcode-app-receipt-with-transaction
new file mode 100644
index 0000000..6b2d6e7
--- /dev/null
+++ b/tests/resources/xcode/xcode-app-receipt-with-transaction
@@ -0,0 +1 @@
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
\ No newline at end of file
diff --git a/tests/resources/xcode/xcode-signed-app-transaction b/tests/resources/xcode/xcode-signed-app-transaction
new file mode 100644
index 0000000..3d11326
--- /dev/null
+++ b/tests/resources/xcode/xcode-signed-app-transaction
@@ -0,0 +1 @@
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.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.Dpdk_VsO2MUCevwyS407alJpPc1Nq_UIP9EiDHaQBxlyi35NFnsKUVNuFNcGWrGRCCImnb4QGBKHfQC2i4sPCg
\ No newline at end of file
diff --git a/tests/resources/xcode/xcode-signed-renewal-info b/tests/resources/xcode/xcode-signed-renewal-info
new file mode 100644
index 0000000..d18123c
--- /dev/null
+++ b/tests/resources/xcode/xcode-signed-renewal-info
@@ -0,0 +1 @@
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.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.WnT3aB9Lwjbr0ICUGn_5CdglzedVd7eOkrqirhcWFvwJZzN1FajuMV6gFEbgD82aL0Ix6HGZcwkNDlVNLvYOEQ
\ No newline at end of file
diff --git a/tests/resources/xcode/xcode-signed-transaction b/tests/resources/xcode/xcode-signed-transaction
new file mode 100644
index 0000000..6daf517
--- /dev/null
+++ b/tests/resources/xcode/xcode-signed-transaction
@@ -0,0 +1 @@
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.eyJpbkFwcE93bmVyc2hpcFR5cGUiOiJQVVJDSEFTRUQiLCJwdXJjaGFzZURhdGUiOjE2OTc2Nzk5MzYwNDkuNzI5Nywic3Vic2NyaXB0aW9uR3JvdXBJZGVudGlmaWVyIjoiNkYzQTkzQUIiLCJzaWduZWREYXRlIjoxNjk3Njc5OTM2MDU2LjQ4NSwib3JpZ2luYWxQdXJjaGFzZURhdGUiOjE2OTc2Nzk5MzYwNDkuNzI5NywiaXNVcGdyYWRlZCI6ZmFsc2UsImRldmljZVZlcmlmaWNhdGlvbiI6InNHRG5wZytvemI4dXdEU3VDRFoyb1ZabzFDS3JiQjh1alI4VnhDeGh5a1J3eUJJSzZ4NlhDeUVSbTh5V3J6RTgiLCJvZmZlclR5cGUiOjEsInF1YW50aXR5IjoxLCJ0cmFuc2FjdGlvbklkIjoiMCIsInR5cGUiOiJBdXRvLVJlbmV3YWJsZSBTdWJzY3JpcHRpb24iLCJ0cmFuc2FjdGlvblJlYXNvbiI6IlBVUkNIQVNFIiwicHJvZHVjdElkIjoicGFzcy5wcmVtaXVtIiwiZXhwaXJlc0RhdGUiOjE3MDAzNTgzMzYwNDkuNzI5NywiZW52aXJvbm1lbnQiOiJYY29kZSIsInN0b3JlZnJvbnRJZCI6IjE0MzQ0MSIsIm9yaWdpbmFsVHJhbnNhY3Rpb25JZCI6IjAiLCJidW5kbGVJZCI6ImNvbS5leGFtcGxlLm5hdHVyZWxhYi5iYWNreWFyZGJpcmRzLmV4YW1wbGUiLCJkZXZpY2VWZXJpZmljYXRpb25Ob25jZSI6IjdlZGVhODdkLTk4ZjAtNDJkMC05NjgyLTQ5Y2E4MTAyMmY3MyIsIndlYk9yZGVyTGluZUl0ZW1JZCI6IjAiLCJzdG9yZWZyb250IjoiVVNBIn0.rkJYnvujStteRkMHhoIR2ThmNFnyKcx5XxIakXYdh-1oKtEVEU5zQAiONaLDpBDO5JhLLrTbfp7LS5tMiqmgHw
\ No newline at end of file
diff --git a/tests/unit-tests/jwt_verification.test.ts b/tests/unit-tests/jwt_verification.test.ts
index 09fcd75..d66eaa9 100644
--- a/tests/unit-tests/jwt_verification.test.ts
+++ b/tests/unit-tests/jwt_verification.test.ts
@@ -4,6 +4,7 @@ import assert = require("assert");
 import { KeyObject, X509Certificate } from "crypto";
 import { SignedDataVerifier, VerificationException, VerificationStatus } from "../../jwt_verification";
 import { Environment } from "../../models/Environment";
+import { readFile, getSignedPayloadVerifierWithDefaultAppAppleId, getDefaultSignedPayloadVerifier } from "../util";
 
 const ROOT_CA_BASE64_ENCODED = "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";
 const INTERMEDIATE_CA_BASE64_ENCODED = "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";
@@ -114,18 +115,12 @@ describe("Chain Verification Checks", () => {
     })
 })
 
-
-const TEST_NOTIFICATION = "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.eyJkYXRhIjp7ImFwcEFwcGxlSWQiOjEyMzQsImVudmlyb25tZW50IjoiU2FuZGJveCIsImJ1bmRsZUlkIjoiY29tLmV4YW1wbGUifSwibm90aWZpY2F0aW9uVVVJRCI6IjlhZDU2YmQyLTBiYzYtNDJlMC1hZjI0LWZkOTk2ZDg3YTFlNiIsInNpZ25lZERhdGUiOjE2ODEzMTQzMjQwMDAsIm5vdGlmaWNhdGlvblR5cGUiOiJURVNUIn0.VVXYwuNm2Y3XsOUva-BozqatRCsDuykA7xIe_CCRw6aIAAxJ1nb2sw871jfZ6dcgNhUuhoZ93hfbc1v_5zB7Og";
-const MISSING_X5C_HEADER_CLAIM = "eyJ0eXAiOiJKV1QiLCJhbGciOiJFUzI1NiIsIng1Y3dyb25nIjpbIk1JSUJvRENDQVVhZ0F3SUJBZ0lCRERBS0JnZ3Foa2pPUFFRREF6QkZNUXN3Q1FZRFZRUUdFd0pWVXpFTE1Ba0dBMVVFQ0F3Q1EwRXhFakFRQmdOVkJBY01DVU4xY0dWeWRHbHViekVWTUJNR0ExVUVDZ3dNU1c1MFpYSnRaV1JwWVhSbE1CNFhEVEl6TURFd05USXhNekV6TkZvWERUTXpNREV3TVRJeE16RXpORm93UFRFTE1Ba0dBMVVFQmhNQ1ZWTXhDekFKQmdOVkJBZ01Ba05CTVJJd0VBWURWUVFIREFsRGRYQmxjblJwYm04eERUQUxCZ05WQkFvTUJFeGxZV1l3V1RBVEJnY3Foa2pPUFFJQkJnZ3Foa2pPUFFNQkJ3TkNBQVRpdFlIRWFZVnVjOGc5QWpUT3dFck12R3lQeWtQYStwdXZUSThoSlRIWlpETEdhczJxWDErRXJ4Z1FUSmdWWHY3Nm5tTGhoUkpIK2oyNUFpQUk4aUdzb3k4d0xUQUpCZ05WSFJNRUFqQUFNQTRHQTFVZER3RUIvd1FFQXdJSGdEQVFCZ29xaGtpRzkyTmtCZ3NCQkFJRkFEQUtCZ2dxaGtqT1BRUURBd05JQURCRkFpQlg0YytUMEZwNW5KNVFSQ2xSZnU1UFNCeVJ2TlB0dWFUc2swdlBCM1dBSUFJaEFOZ2FhdUFqL1lQOXMwQWtFaHlKaHhRTy82UTJ6b3VaK0gxQ0lPZWhuTXpRIiwiTUlJQm56Q0NBVVdnQXdJQkFnSUJDekFLQmdncWhrak9QUVFEQXpBMk1Rc3dDUVlEVlFRR0V3SlZVekVUTUJFR0ExVUVDQXdLUTJGc2FXWnZjbTVwWVRFU01CQUdBMVVFQnd3SlEzVndaWEowYVc1dk1CNFhEVEl6TURFd05USXhNekV3TlZvWERUTXpNREV3TVRJeE16RXdOVm93UlRFTE1Ba0dBMVVFQmhNQ1ZWTXhDekFKQmdOVkJBZ01Ba05CTVJJd0VBWURWUVFIREFsRGRYQmxjblJwYm04eEZUQVRCZ05WQkFvTURFbHVkR1Z5YldWa2FXRjBaVEJaTUJNR0J5cUdTTTQ5QWdFR0NDcUdTTTQ5QXdFSEEwSUFCQlVONVY5cktqZlJpTUFJb2pFQTBBdjVNcDBvRitPMGNMNGd6clRGMTc4aW5VSHVnajdFdDQ2TnJrUTdoS2dNVm5qb2dxNDVRMXJNcytjTUhWTklMV3FqTlRBek1BOEdBMVVkRXdRSU1BWUJBZjhDQVFBd0RnWURWUjBQQVFIL0JBUURBZ0VHTUJBR0NpcUdTSWIzWTJRR0FnRUVBZ1VBTUFvR0NDcUdTTTQ5QkFNREEwZ0FNRVVDSVFDbXNJS1lzNDF1bGxzc0hYNHJWdmVVVDBaN0lzNS9oTEsxbEZQVHR1bjNoQUlnYzIrMlJHNStnTmNGVmNzK1hKZUVsNEdaK29qbDNST09tbGwreWU3ZHluUT0iLCJNSUlCZ2pDQ0FTbWdBd0lCQWdJSkFMVWM1QUxpSDVwYk1Bb0dDQ3FHU000OUJBTURNRFl4Q3pBSkJnTlZCQVlUQWxWVE1STXdFUVlEVlFRSURBcERZV3hwWm05eWJtbGhNUkl3RUFZRFZRUUhEQWxEZFhCbGNuUnBibTh3SGhjTk1qTXdNVEExTWpFek1ESXlXaGNOTXpNd01UQXlNakV6TURJeVdqQTJNUXN3Q1FZRFZRUUdFd0pWVXpFVE1CRUdBMVVFQ0F3S1EyRnNhV1p2Y201cFlURVNNQkFHQTFVRUJ3d0pRM1Z3WlhKMGFXNXZNRmt3RXdZSEtvWkl6ajBDQVFZSUtvWkl6ajBEQVFjRFFnQUVjKy9CbCtnb3NwbzZ0ZjlaN2lvNXRkS2RybE4xWWRWbnFFaEVEWERTaHpkQUpQUWlqYW1YSU1IZjh4V1dUYTF6Z29ZVHhPS3BidUp0RHBsejFYcmlUYU1nTUI0d0RBWURWUjBUQkFVd0F3RUIvekFPQmdOVkhROEJBZjhFQkFNQ0FRWXdDZ1lJS29aSXpqMEVBd01EUndBd1JBSWdlbVdRWG5NQWRUYWQySkRKV25nOVU0dUJCTDVtQTdXSTA1SDdvSDdjNmlRQ0lIaVJxTWpOZnpVQXlpdTloNnJPVS9LK2lUUjBJLzNZL05TV3NYSFgrYWNjIl19.eyJkYXRhIjp7ImJ1bmRsZUlkIjoiY29tLmV4YW1wbGUifSwibm90aWZpY2F0aW9uVVVJRCI6IjlhZDU2YmQyLTBiYzYtNDJlMC1hZjI0LWZkOTk2ZDg3YTFlNiIsIm5vdGlmaWNhdGlvblR5cGUiOiJURVNUIn0.1TFhjDR4WwQJNgizVGYXz3WE3ajxTdH1wKLQQ71MtrkadSxxOo3yPo_6L9Z03unIU7YK-NRNzSIb5bh5WqTprQ";
-const WRONG_BUNDLE_ID = "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.eyJkYXRhIjp7ImJ1bmRsZUlkIjoiY29tLmV4YW1wbGUud3JvbmcifSwibm90aWZpY2F0aW9uVVVJRCI6IjlhZDU2YmQyLTBiYzYtNDJlMC1hZjI0LWZkOTk2ZDg3YTFlNiIsIm5vdGlmaWNhdGlvblR5cGUiOiJURVNUIn0.WWE31hTB_mcv2O_lf-xI-MNY3d8txc0MzpqFx4QnYDfFIxB95Lo2Fm3r46YSjLLdL7xCWdEJrJP5bHgRCejAGg";
-const RENEWAL_INFO = "eyJ4NWMiOlsiTUlJQm9EQ0NBVWFnQXdJQkFnSUJEREFLQmdncWhrak9QUVFEQXpCRk1Rc3dDUVlEVlFRR0V3SlZVekVMTUFrR0ExVUVDQXdDUTBFeEVqQVFCZ05WQkFjTUNVTjFjR1Z5ZEdsdWJ6RVZNQk1HQTFVRUNnd01TVzUwWlhKdFpXUnBZWFJsTUI0WERUSXpNREV3TlRJeE16RXpORm9YRFRNek1ERXdNVEl4TXpFek5Gb3dQVEVMTUFrR0ExVUVCaE1DVlZNeEN6QUpCZ05WQkFnTUFrTkJNUkl3RUFZRFZRUUhEQWxEZFhCbGNuUnBibTh4RFRBTEJnTlZCQW9NQkV4bFlXWXdXVEFUQmdjcWhrak9QUUlCQmdncWhrak9QUU1CQndOQ0FBVGl0WUhFYVlWdWM4ZzlBalRPd0VyTXZHeVB5a1BhK3B1dlRJOGhKVEhaWkRMR2FzMnFYMStFcnhnUVRKZ1ZYdjc2bm1MaGhSSkgrajI1QWlBSThpR3NveTh3TFRBSkJnTlZIUk1FQWpBQU1BNEdBMVVkRHdFQi93UUVBd0lIZ0RBUUJnb3Foa2lHOTJOa0Jnc0JCQUlGQURBS0JnZ3Foa2pPUFFRREF3TklBREJGQWlCWDRjK1QwRnA1bko1UVJDbFJmdTVQU0J5UnZOUHR1YVRzazB2UEIzV0FJQUloQU5nYWF1QWovWVA5czBBa0VoeUpoeFFPLzZRMnpvdVorSDFDSU9laG5NelEiLCJNSUlCbnpDQ0FVV2dBd0lCQWdJQkN6QUtCZ2dxaGtqT1BRUURBekEyTVFzd0NRWURWUVFHRXdKVlV6RVRNQkVHQTFVRUNBd0tRMkZzYVdadmNtNXBZVEVTTUJBR0ExVUVCd3dKUTNWd1pYSjBhVzV2TUI0WERUSXpNREV3TlRJeE16RXdOVm9YRFRNek1ERXdNVEl4TXpFd05Wb3dSVEVMTUFrR0ExVUVCaE1DVlZNeEN6QUpCZ05WQkFnTUFrTkJNUkl3RUFZRFZRUUhEQWxEZFhCbGNuUnBibTh4RlRBVEJnTlZCQW9NREVsdWRHVnliV1ZrYVdGMFpUQlpNQk1HQnlxR1NNNDlBZ0VHQ0NxR1NNNDlBd0VIQTBJQUJCVU41VjlyS2pmUmlNQUlvakVBMEF2NU1wMG9GK08wY0w0Z3pyVEYxNzhpblVIdWdqN0V0NDZOcmtRN2hLZ01WbmpvZ3E0NVExck1zK2NNSFZOSUxXcWpOVEF6TUE4R0ExVWRFd1FJTUFZQkFmOENBUUF3RGdZRFZSMFBBUUgvQkFRREFnRUdNQkFHQ2lxR1NJYjNZMlFHQWdFRUFnVUFNQW9HQ0NxR1NNNDlCQU1EQTBnQU1FVUNJUUNtc0lLWXM0MXVsbHNzSFg0clZ2ZVVUMFo3SXM1L2hMSzFsRlBUdHVuM2hBSWdjMisyUkc1K2dOY0ZWY3MrWEplRWw0R1orb2psM1JPT21sbCt5ZTdkeW5RPSIsIk1JSUJnakNDQVNtZ0F3SUJBZ0lKQUxVYzVBTGlINXBiTUFvR0NDcUdTTTQ5QkFNRE1EWXhDekFKQmdOVkJBWVRBbFZUTVJNd0VRWURWUVFJREFwRFlXeHBabTl5Ym1saE1SSXdFQVlEVlFRSERBbERkWEJsY25ScGJtOHdIaGNOTWpNd01UQTFNakV6TURJeVdoY05Nek13TVRBeU1qRXpNREl5V2pBMk1Rc3dDUVlEVlFRR0V3SlZVekVUTUJFR0ExVUVDQXdLUTJGc2FXWnZjbTVwWVRFU01CQUdBMVVFQnd3SlEzVndaWEowYVc1dk1Ga3dFd1lIS29aSXpqMENBUVlJS29aSXpqMERBUWNEUWdBRWMrL0JsK2dvc3BvNnRmOVo3aW81dGRLZHJsTjFZZFZucUVoRURYRFNoemRBSlBRaWphbVhJTUhmOHhXV1RhMXpnb1lUeE9LcGJ1SnREcGx6MVhyaVRhTWdNQjR3REFZRFZSMFRCQVV3QXdFQi96QU9CZ05WSFE4QkFmOEVCQU1DQVFZd0NnWUlLb1pJemowRUF3TURSd0F3UkFJZ2VtV1FYbk1BZFRhZDJKREpXbmc5VTR1QkJMNW1BN1dJMDVIN29IN2M2aVFDSUhpUnFNak5melVBeWl1OWg2ck9VL0sraVRSMEkvM1kvTlNXc1hIWCthY2MiXSwidHlwIjoiSldUIiwiYWxnIjoiRVMyNTYifQ.eyJlbnZpcm9ubWVudCI6IlNhbmRib3giLCJzaWduZWREYXRlIjoxNjcyOTU2MTU0MDAwfQ.FbK2OL-t6l4892W7fzWyus_g9mIl2CzWLbVt7Kgcnt6zzVulF8bzovgpe0v_y490blROGixy8KDoe2dSU53-Xw";
-const TRANSACTION_INFO = "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.eyJlbnZpcm9ubWVudCI6IlNhbmRib3giLCJidW5kbGVJZCI6ImNvbS5leGFtcGxlIiwic2lnbmVkRGF0ZSI6MTY3Mjk1NjE1NDAwMH0.PnHWpeIJZ8f2Q218NSGLo_aR0IBEJvC6PxmxKXh-qfYTrZccx2suGl223OSNAX78e4Ylf2yJCG2N-FfU-NIhZQ";
-
 describe("Decoding checks", () => {
     it('should fail to verify with a missing x5c header', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.PRODUCTION, "com.example");
+        const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.PRODUCTION, "com.example")
         try {
-            await verifier.verifyAndDecodeNotification(MISSING_X5C_HEADER_CLAIM)
+            const missingX5CHeaderClaim = readFile('tests/resources/mock_signed_data/missingX5CHeaderClaim')
+            await verifier.verifyAndDecodeNotification(missingX5CHeaderClaim)
             assert(false)
         } catch (e) {
             expect(e).toBeInstanceOf(VerificationException)
@@ -134,9 +129,10 @@ describe("Decoding checks", () => {
     })
 
     it('should fail to verify with an invalid bundle id', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example");
+        const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example")
         try {
-            await verifier.verifyAndDecodeNotification(WRONG_BUNDLE_ID)
+            const wrongBundelId = readFile('tests/resources/mock_signed_data/wrongBundleId')
+            await verifier.verifyAndDecodeNotification(wrongBundelId)
             assert(false)
         } catch (e) {
             expect(e).toBeInstanceOf(VerificationException)
@@ -145,9 +141,10 @@ describe("Decoding checks", () => {
     })
 
     it('should fail to verify with an invalid bundle id for transaction', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example.x");
         try {
-            await verifier.verifyAndDecodeTransaction(TRANSACTION_INFO)
+            const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example.x")
+            const transactionInfo = readFile('tests/resources/mock_signed_data/transactionInfo')
+            await verifier.verifyAndDecodeTransaction(transactionInfo)
             assert(false)
         } catch (e) {
             expect(e).toBeInstanceOf(VerificationException)
@@ -156,9 +153,11 @@ describe("Decoding checks", () => {
     })
 
     it('should fail to verify with an invalid environment', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.PRODUCTION, "com.example", 1234);
         try {
-            await verifier.verifyAndDecodeNotification(TEST_NOTIFICATION)
+            const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.PRODUCTION, "com.example")
+            const testNotification = readFile('tests/resources/mock_signed_data/testNotification')
+            const notification = await verifier.verifyAndDecodeNotification(testNotification)
+            await verifier.verifyAndDecodeNotification(testNotification)
             assert(false)
         } catch (e) {
             expect(e).toBeInstanceOf(VerificationException)
@@ -167,45 +166,47 @@ describe("Decoding checks", () => {
     })
 
     it('should fail to verify with a malformed JWT with too many parts', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example");
+        const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example")
         try {
             await verifier.verifyAndDecodeNotification("a.b.c.d")
             assert(false)
         } catch (e) {
             expect(e).toBeInstanceOf(VerificationException)
-            expect((e as VerificationException).status).toEqual(VerificationStatus.INVALID_CERTIFICATE)
+            expect((e as VerificationException).status).toEqual(VerificationStatus.VERIFICATION_FAILURE)
         }
     })
 
     it('should fail to verify with a malformed JWT', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example");
+        const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example")
         try {
             await verifier.verifyAndDecodeNotification("a.b.c")
             assert(false)
         } catch (e) {
             expect(e).toBeInstanceOf(VerificationException)
-            expect((e as VerificationException).status).toEqual(VerificationStatus.INVALID_CERTIFICATE)
+            expect((e as VerificationException).status).toEqual(VerificationStatus.VERIFICATION_FAILURE)
         }
     })
 
     it('should verify and decode a valid notification', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example");
-
-        const notification = await verifier.verifyAndDecodeNotification(TEST_NOTIFICATION)
+        const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example")
+        const testNotification = readFile('tests/resources/mock_signed_data/testNotification')
+        const notification = await verifier.verifyAndDecodeNotification(testNotification)
         expect(notification.notificationType).toEqual("TEST")
     })
 
     it('should verify and decode a valid renewal info', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example");
+        const verifier =getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example")
 
-        const notification = await verifier.verifyAndDecodeRenewalInfo(RENEWAL_INFO)
+        const renewalInfo = readFile('tests/resources/mock_signed_data/renewalInfo')
+        const notification = await verifier.verifyAndDecodeRenewalInfo(renewalInfo)
         expect(notification.environment).toEqual(Environment.SANDBOX)
     })
 
     it('should verify and decode a valid transaction info', async () => {
-        const verifier = new SignedJWTVerifierTest([Buffer.from(ROOT_CA_BASE64_ENCODED, 'base64')], false, Environment.SANDBOX, "com.example");
+        const verifier = getSignedPayloadVerifierWithDefaultAppAppleId(Environment.SANDBOX, "com.example")
 
-        const notification = await verifier.verifyAndDecodeRenewalInfo(TRANSACTION_INFO)
+        const transactionInfo = readFile('tests/resources/mock_signed_data/transactionInfo')
+        const notification = await verifier.verifyAndDecodeRenewalInfo(transactionInfo)
         expect(notification.environment).toEqual(Environment.SANDBOX)
     })
 });
\ No newline at end of file
diff --git a/tests/unit-tests/receipt_utility.test.ts b/tests/unit-tests/receipt_utility.test.ts
new file mode 100644
index 0000000..7717925
--- /dev/null
+++ b/tests/unit-tests/receipt_utility.test.ts
@@ -0,0 +1,26 @@
+// Copyright (c) 2023 Apple Inc. Licensed under MIT License.
+
+import { ReceiptUtility } from "../../receipt_utility"
+import { readFile } from "../util"
+
+
+describe('Receipt Utility Tets', () => {
+    it('should not extract a transaction id from an xcode receipt without a transaction', async () => {
+        const receipt = readFile('tests/resources/xcode/xcode-app-receipt-empty')
+        const receipt_utility = new ReceiptUtility()
+        const extracted_transaction_id = receipt_utility.extractTransactionIdFromAppReceipt(receipt)
+        expect(extracted_transaction_id).toBeNull()
+    })
+    it('should extract a transaction id from an xcode receipt with a transaction', async () => {
+        const receipt = readFile('tests/resources/xcode/xcode-app-receipt-with-transaction')
+        const receipt_utility = new ReceiptUtility()
+        const extracted_transaction_id = receipt_utility.extractTransactionIdFromAppReceipt(receipt)
+        expect(extracted_transaction_id).toBe("0")
+    })
+    it('should extract a transaction id from an xcode transaction receipt', async () => {
+        const receipt = readFile('tests/resources/mock_signed_data/legacyTransaction')
+        const receipt_utility = new ReceiptUtility()
+        const extracted_transaction_id = receipt_utility.extractTransactionIdFromTransactionReceipt(receipt)
+        expect(extracted_transaction_id).toBe("33993399")
+    })
+})
\ No newline at end of file
diff --git a/tests/unit-tests/transaction_decoding.test.ts b/tests/unit-tests/transaction_decoding.test.ts
new file mode 100644
index 0000000..0b7e3d1
--- /dev/null
+++ b/tests/unit-tests/transaction_decoding.test.ts
@@ -0,0 +1,126 @@
+// Copyright (c) 2023 Apple Inc. Licensed under MIT License.
+
+import { AutoRenewStatus } from "../../models/AutoRenewStatus";
+import { Environment } from "../../models/Environment";
+import { ExpirationIntent } from "../../models/ExpirationIntent";
+import { NotificationTypeV2 } from "../../models/NotificationTypeV2";
+import { OfferType } from "../../models/OfferType";
+import { PriceIncreaseStatus } from "../../models/PriceIncreaseStatus";
+import { Status } from "../../models/Status";
+import { Subtype } from "../../models/Subtype";
+import { createSignedDataFromJson, getDefaultSignedPayloadVerifier } from "../util"
+import { InAppOwnershipType } from "../../models/InAppOwnershipType";
+import { RevocationReason } from "../../models/RevocationReason";
+import { TransactionReason } from "../../models/TransactionReason";
+import { Type } from "../../models/Type";
+
+
+describe('Testing decoding of signed data', () => {
+    it('should decode an app transaction', async () => {
+        const signedAppTransaction = createSignedDataFromJson("tests/resources/models/appTransaction.json")
+
+        const appTransaction = await getDefaultSignedPayloadVerifier().verifyAndDecodeAppTransaction(signedAppTransaction)
+
+        expect(Environment.LOCAL_TESTING).toBe(appTransaction.receiptType)
+        expect(531412).toBe(appTransaction.appAppleId)
+        expect("com.example").toBe(appTransaction.bundleId)
+        expect("1.2.3").toBe(appTransaction.applicationVersion)
+        expect(512).toBe(appTransaction.versionExternalIdentifier)
+        expect(1698148900000).toBe(appTransaction.receiptCreationDate)
+        expect(1698148800000).toBe(appTransaction.originalPurchaseDate)
+        expect("1.1.2").toBe(appTransaction.originalApplicationVersion)
+        expect("device_verification_value").toBe(appTransaction.deviceVerification)
+        expect("48ccfa42-7431-4f22-9908-7e88983e105a").toBe(appTransaction.deviceVerificationNonce)
+        expect(1698148700000).toBe(appTransaction.preorderDate)
+    })
+    it('should decode a renewal info', async () => {
+        const signedRenewalInfo = createSignedDataFromJson("tests/resources/models/signedRenewalInfo.json")
+
+        const renewalInfo = await getDefaultSignedPayloadVerifier().verifyAndDecodeRenewalInfo(signedRenewalInfo)
+
+        expect(ExpirationIntent.CUSTOMER_CANCELLED).toBe(renewalInfo.expirationIntent)
+        expect("12345").toBe(renewalInfo.originalTransactionId)
+        expect("com.example.product.2").toBe(renewalInfo.autoRenewProductId)
+        expect("com.example.product").toBe(renewalInfo.productId)
+        expect(AutoRenewStatus.ON).toBe(renewalInfo.autoRenewStatus)
+        expect(renewalInfo.isInBillingRetryPeriod).toBe(true)
+        expect(PriceIncreaseStatus.CUSTOMER_HAS_NOT_RESPONDED).toBe(renewalInfo.priceIncreaseStatus)
+        expect(1698148900000).toBe(renewalInfo.gracePeriodExpiresDate)
+        expect(OfferType.PROMOTIONAL_OFFER).toBe(renewalInfo.offerType)
+        expect("abc.123").toBe(renewalInfo.offerIdentifier)
+        expect(1698148800000).toBe(renewalInfo.signedDate)
+        expect(Environment.LOCAL_TESTING).toBe(renewalInfo.environment)
+        expect(1698148800000).toBe(renewalInfo.recentSubscriptionStartDate)
+        expect(1698148850000).toBe(renewalInfo.renewalDate)
+    })
+    it('should decode a transaction info', async () => {
+        const signedTransaction = createSignedDataFromJson("tests/resources/models/signedTransaction.json")
+
+        const transaction = await getDefaultSignedPayloadVerifier().verifyAndDecodeTransaction(signedTransaction)
+
+        expect("12345").toBe(transaction.originalTransactionId)
+        expect("23456").toBe(transaction.transactionId)
+        expect("34343").toBe(transaction.webOrderLineItemId)
+        expect("com.example").toBe(transaction.bundleId)
+        expect("com.example.product").toBe(transaction.productId)
+        expect("55555").toBe(transaction.subscriptionGroupIdentifier)
+        expect(1698148800000).toBe(transaction.originalPurchaseDate)
+        expect(1698148900000).toBe(transaction.purchaseDate)
+        expect(1698148950000).toBe(transaction.revocationDate)
+        expect(1698149000000).toBe(transaction.expiresDate)
+        expect(1).toBe(transaction.quantity)
+        expect(Type.AUTO_RENEWABLE_SUBSCRIPTION).toBe(transaction.type)
+        expect("7e3fb20b-4cdb-47cc-936d-99d65f608138").toBe(transaction.appAccountToken)
+        expect(InAppOwnershipType.PURCHASED).toBe(transaction.inAppOwnershipType)
+        expect(1698148900000).toBe(transaction.signedDate)
+        expect(RevocationReason.REFUNDED_DUE_TO_ISSUE).toBe(transaction.revocationReason)
+        expect("abc.123").toBe(transaction.offerIdentifier)
+        expect(transaction.isUpgraded).toBe(true)
+        expect(OfferType.INTRODUCTORY_OFFER).toBe(transaction.offerType)
+        expect("USA").toBe(transaction.storefront)
+        expect("143441").toBe(transaction.storefrontId)
+        expect(TransactionReason.PURCHASE).toBe(transaction.transactionReason)
+        expect(Environment.LOCAL_TESTING).toBe(transaction.environment)
+    })
+    it('should decode a signed notification', async () => {
+        const signedNotification = createSignedDataFromJson("tests/resources/models/signedNotification.json")
+
+        const notification = await getDefaultSignedPayloadVerifier().verifyAndDecodeNotification(signedNotification)
+
+        expect(NotificationTypeV2.SUBSCRIBED).toBe(notification.notificationType)
+        expect(Subtype.INITIAL_BUY).toBe(notification.subtype)
+        expect("002e14d5-51f5-4503-b5a8-c3a1af68eb20").toBe(notification.notificationUUID)
+        expect("2.0").toBe(notification.version)
+        expect(1698148900000).toBe(notification.signedDate)
+        expect(notification.data).toBeTruthy()
+        expect(notification.summary).toBeFalsy()
+        expect(Environment.LOCAL_TESTING).toBe(notification.data!.environment)
+        expect(41234).toBe(notification.data!.appAppleId)
+        expect("com.example").toBe(notification.data!.bundleId)
+        expect("1.2.3").toBe(notification.data!.bundleVersion)
+        expect("signed_transaction_info_value").toBe(notification.data!.signedTransactionInfo)
+        expect("signed_renewal_info_value").toBe(notification.data!.signedRenewalInfo)
+        expect(Status.ACTIVE).toBe(notification.data!.status)
+    })
+    it('should decode a signed summary notification', async () => {
+        const signedNotification = createSignedDataFromJson("tests/resources/models/signedSummaryNotification.json")
+
+        const notification = await getDefaultSignedPayloadVerifier().verifyAndDecodeNotification(signedNotification)
+
+        expect(NotificationTypeV2.RENEWAL_EXTENSION).toBe(notification.notificationType)
+        expect(Subtype.SUMMARY).toBe(notification.subtype)
+        expect("002e14d5-51f5-4503-b5a8-c3a1af68eb20").toBe(notification.notificationUUID)
+        expect("2.0").toBe(notification.version)
+        expect(1698148900000).toBe(notification.signedDate)
+        expect(notification.data).toBeFalsy();
+        expect(notification.summary).toBeTruthy();
+        expect(Environment.LOCAL_TESTING).toBe(notification.summary!.environment)
+        expect(41234).toBe(notification.summary!.appAppleId)
+        expect("com.example").toBe(notification.summary!.bundleId)
+        expect("com.example.product").toBe(notification.summary!.productId)
+        expect("efb27071-45a4-4aca-9854-2a1e9146f265").toBe(notification.summary!.requestIdentifier)
+        expect(["CAN", "USA", "MEX"]).toStrictEqual(notification.summary!.storefrontCountryCodes)
+        expect(5).toBe(notification.summary!.succeededCount)
+        expect(2).toBe(notification.summary!.failedCount)
+    })
+})
\ No newline at end of file
diff --git a/tests/util.ts b/tests/util.ts
new file mode 100644
index 0000000..93f8a21
--- /dev/null
+++ b/tests/util.ts
@@ -0,0 +1,47 @@
+// Copyright (c) 2023 Apple Inc. Licensed under MIT License.
+
+import * as fs from 'fs';
+import { Environment } from '../models/Environment';
+import { SignedDataVerifier } from '../jwt_verification';
+import { ECKeyPairOptions, generateKeyPairSync } from 'crypto';
+import jsonwebtoken = require('jsonwebtoken');
+
+export function readFile(path: string): string {
+    return fs.readFileSync(path, {
+        encoding: 'utf8'
+    })
+}
+
+export function readBytes(path: string): Buffer {
+    return fs.readFileSync(path)
+}
+
+export function getSignedPayloadVerifier(environment: Environment, bundleId: string, appAppleId: number): SignedDataVerifier {
+    return new SignedDataVerifier([readBytes('tests/resources/certs/testCA.der')], false, environment, bundleId, appAppleId)
+}
+
+export function getSignedPayloadVerifierWithDefaultAppAppleId(environment: Environment, bundleId: string): SignedDataVerifier {
+    return getSignedPayloadVerifier(environment, bundleId, 1234)
+}
+
+export function getDefaultSignedPayloadVerifier(): SignedDataVerifier {
+    return getSignedPayloadVerifierWithDefaultAppAppleId(Environment.LOCAL_TESTING, "com.example")
+}
+
+export function createSignedDataFromJson(path: string): string {
+    const fileContents = readFile(path)
+    const keyPairOptions: ECKeyPairOptions<'pem', 'pem'> = {
+        namedCurve: 'prime256v1',
+        publicKeyEncoding: {
+            type: 'spki',
+            format: 'pem'
+        },
+        privateKeyEncoding: {
+            type: 'pkcs8',
+            format: 'pem'
+        }
+    }
+    const keypair = generateKeyPairSync("ec", keyPairOptions)
+    const privateKey = keypair.privateKey
+    return jsonwebtoken.sign(fileContents, privateKey, { algorithm: 'ES256'});
+}
\ No newline at end of file