fix test cases

Author: sanchitmehtagit

auth0_flutter/EXAMPLES.md

@@ -703,7 +703,10 @@ final didStore =
 
 ### Custom Token Exchange
 
-[Custom Token Exchange](https://auth0.com/docs/authenticate/custom-token-exchange) allows you to exchange tokens from external identity providers for Auth0 tokens. This is useful for migrating users from legacy systems or integrating with third-party identity providers.
+[Custom Token Exchange](https://auth0.com/docs/authenticate/custom-token-exchange) allows you to enable applications to exchange their existing tokens for Auth0 tokens when calling the /oauth/token endpoint. This is useful for advanced integration use cases, such as:
+- Get Auth0 tokens for another audience
+- Integrate an external identity provider 
+- Migrate to Auth0
 
 > **Note:** This feature is currently available in [Early Access](https://auth0.com/docs/troubleshoot/product-lifecycle/product-release-stages#early-access). Please reach out to Auth0 support to enable it for your tenant.
 
@@ -739,11 +742,6 @@ final credentials = await auth0Web.customTokenExchange(
 
 </details>
 
-**Required setup:**
-1. Configure a Custom Token Exchange profile in your Auth0 Dashboard
-2. Implement validation logic in an Auth0 Action to verify the external token
-3. Grant your Auth0 application the `urn:auth0:oauth2:grant-type:token-exchange` permission
-
 > 💡 For more information, see the [Custom Token Exchange documentation](https://auth0.com/docs/authenticate/custom-token-exchange) and [RFC 8693](https://tools.ietf.org/html/rfc8693).
 
 ### Errors

auth0_flutter/test/web/auth0_flutter_web_test.dart

@@ -416,7 +416,7 @@ void main() {
   group('customTokenExchange', () {
     test('customTokenExchange is called with required parameters and succeeds',
         () async {
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(webCredentials));
 
       final result = await auth0.customTokenExchange(
@@ -440,7 +440,7 @@ void main() {
 
     test('customTokenExchange is called with all optional parameters',
         () async {
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(webCredentials));
 
       await auth0.customTokenExchange(
@@ -460,7 +460,7 @@ void main() {
     });
 
     test('customTokenExchange is called with custom parameters', () async {
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(webCredentials));
 
       await auth0.customTokenExchange(
@@ -479,7 +479,7 @@ void main() {
     });
 
     test('customTokenExchange handles empty scopes correctly', () async {
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(webCredentials));
 
       await auth0.customTokenExchange(
@@ -493,7 +493,7 @@ void main() {
     });
 
     test('customTokenExchange throws WebException on error', () async {
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenThrow(createJsException('invalid_token', 'Token is invalid'));
 
       expect(
@@ -515,7 +515,7 @@ void main() {
       ];
 
       for (final errorCase in errorCases) {
-        when(mockClientProxy.exchangeToken(argThat(anything)))
+        when(mockClientProxy.exchangeToken(any))
             .thenThrow(createJsException(errorCase['code']!, errorCase['message']!));
 
         expect(
@@ -539,7 +539,7 @@ void main() {
           scope: 'openid profile email read:data write:data',
           expires_in: 0.toJS);
 
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(customScopeCredentials));
 
       final result = await auth0.customTokenExchange(
@@ -558,7 +558,7 @@ void main() {
           scope: 'openid',
           expires_in: 0.toJS);
 
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(credentialsNoRefresh));
 
       final result = await auth0.customTokenExchange(
@@ -571,7 +571,7 @@ void main() {
 
     test('customTokenExchange converts JS credentials to Dart Credentials',
         () async {
-      when(mockClientProxy.exchangeToken(argThat(anything)))
+      when(mockClientProxy.exchangeToken(any))
           .thenAnswer((final _) => Future.value(webCredentials));
 
       final result = await auth0.customTokenExchange(

auth0_flutter/test/web/auth0_flutter_web_test.mocks.dart

@@ -135,6 +135,23 @@ class MockAuth0FlutterWebClientProxy extends _i1.Mock
         )) as _i2.WebCredentials),
       ) as _i4.Future<_i2.WebCredentials>);
 
+  @override
+  _i4.Future<_i2.WebCredentials> exchangeToken(_i2.ExchangeTokenOptions? options) =>
+      (super.noSuchMethod(
+        Invocation.method(
+          #exchangeToken,
+          [options],
+        ),
+        returnValue: _i4.Future<_i2.WebCredentials>.value(
+            createJSInteropWrapper<_FakeWebCredentials_1>(_FakeWebCredentials_1(
+          this,
+          Invocation.method(
+            #exchangeToken,
+            [options],
+          ),
+        )) as _i2.WebCredentials),
+      ) as _i4.Future<_i2.WebCredentials>);
+
   @override
   _i4.Future<_i2.RedirectLoginResult> handleRedirectCallback([String? url]) =>
       (super.noSuchMethod(