backend-test-utils: add version field to mock credentials

The mock credentials created by mockCredentials.none(), .user(), and
.service() were missing the internal version: 'v1' field. This caused
toInternalBackstageCredentials() to throw when used with mock
credentials in tests.

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Fredrik Adelöw <freben@gmail.com>

packages/backend-test-utils/src/services/mockCredentials.test.ts

@@ -20,6 +20,7 @@ describe('mockCredentials', () => {
   it('creates a mocked credentials object for a none principal', () => {
     expect(mockCredentials.none()).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'none' },
     });
   });
@@ -27,11 +28,13 @@ describe('mockCredentials', () => {
   it('creates a mocked credentials object for a user principal', () => {
     expect(mockCredentials.user()).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'user', userEntityRef: 'user:default/mock' },
     });
 
     expect(mockCredentials.user('user:default/other')).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'user', userEntityRef: 'user:default/other' },
     });
   });
@@ -39,11 +42,13 @@ describe('mockCredentials', () => {
   it('creates a mocked credentials object for a limited user principal', () => {
     expect(mockCredentials.limitedUser()).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'user', userEntityRef: 'user:default/mock' },
     });
 
     expect(mockCredentials.limitedUser('user:default/other')).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'user', userEntityRef: 'user:default/other' },
     });
   });
@@ -51,11 +56,13 @@ describe('mockCredentials', () => {
   it('creates a mocked credentials object for a service principal', () => {
     expect(mockCredentials.service()).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'service', subject: 'external:test-service' },
     });
 
     expect(mockCredentials.service('plugin:other')).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'service', subject: 'plugin:other' },
     });
   });
@@ -138,6 +145,7 @@ describe('mockCredentials', () => {
       mockCredentials.service('test', { permissionNames: ['do.it'] }),
     ).toEqual({
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: {
         type: 'service',
         subject: 'test',

packages/backend-test-utils/src/services/mockCredentials.ts

@@ -78,6 +78,7 @@ export namespace mockCredentials {
   export function none(): BackstageCredentials<BackstageNonePrincipal> {
     const result = {
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: { type: 'none' },
     } as const;
     Object.defineProperties(result, {
@@ -122,6 +123,7 @@ export namespace mockCredentials {
     validateUserEntityRef(userEntityRef);
     const result = {
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: {
         type: 'user',
         userEntityRef,
@@ -142,7 +144,10 @@ export namespace mockCredentials {
       token: {
         enumerable: false,
         configurable: true,
-        value: user.token(),
+        value:
+          userEntityRef !== DEFAULT_MOCK_USER_ENTITY_REF || options?.actor
+            ? user.token(userEntityRef, options)
+            : user.token(),
       },
     });
     return result;
@@ -250,6 +255,7 @@ export namespace mockCredentials {
   ): BackstageCredentials<BackstageServicePrincipal> {
     const result = {
       $$type: '@backstage/BackstageCredentials',
+      version: 'v1',
       principal: {
         type: 'service',
         subject,