chore(signer): migrate tests to assertions (#18504)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: corymhall

packages/@aws-cdk/aws-signer/package.json

@@ -74,7 +74,7 @@
   },
   "license": "Apache-2.0",
   "devDependencies": {
-    "@aws-cdk/assert-internal": "0.0.0",
+    "@aws-cdk/assertions": "0.0.0",
     "@aws-cdk/cdk-build-tools": "0.0.0",
     "@aws-cdk/cfn2ts": "0.0.0",
     "@aws-cdk/pkglint": "0.0.0",

packages/@aws-cdk/aws-signer/test/signing-profile.test.ts

@@ -1,4 +1,4 @@
-import '@aws-cdk/assert-internal/jest';
+import { Template } from '@aws-cdk/assertions';
 import * as cdk from '@aws-cdk/core';
 import * as signer from '../lib';
 
@@ -14,7 +14,7 @@ describe('signing profile', () => {
     const platform = signer.Platform.AWS_LAMBDA_SHA384_ECDSA;
     new signer.SigningProfile( stack, 'SigningProfile', { platform } );
 
-    expect(stack).toHaveResource('AWS::Signer::SigningProfile', {
+    Template.fromStack(stack).hasResourceProperties('AWS::Signer::SigningProfile', {
       PlatformId: platform.platformId,
       SignatureValidityPeriod: {
         Type: 'MONTHS',
@@ -30,7 +30,7 @@ describe('signing profile', () => {
       signatureValidity: cdk.Duration.days( 7 ),
     } );
 
-    expect(stack).toHaveResource('AWS::Signer::SigningProfile', {
+    Template.fromStack(stack).hasResourceProperties('AWS::Signer::SigningProfile', {
       PlatformId: platform.platformId,
       SignatureValidityPeriod: {
         Type: 'DAYS',
@@ -47,7 +47,7 @@ describe('signing profile', () => {
     cdk.Tags.of(signing).add('tag2', 'value2');
     cdk.Tags.of(signing).add('tag3', '');
 
-    expect(stack).toHaveResource('AWS::Signer::SigningProfile', {
+    Template.fromStack(stack).hasResourceProperties('AWS::Signer::SigningProfile', {
       PlatformId: platform.platformId,
       SignatureValidityPeriod: {
         Type: 'MONTHS',
@@ -109,7 +109,7 @@ describe('signing profile', () => {
           ],
         ],
       });
-      expect(stack).toMatchTemplate({});
+      Template.fromStack(stack).templateMatches({});
     });
   } );
 });