Update ID token unit tests

lemonldap-ng-portal/t/32-Auth-and-issuer-OIDC-implicit.t

@@ -159,9 +159,10 @@ count(4);
 
 # Check attributes in ID Token
 my $id_token_decoded = id_token_payload( $prms{id_token} );
-ok( $id_token_decoded->{sub} eq "dwho", 'Check sub value' );
+is( $id_token_decoded->{sub}, "dwho", 'Check sub value' );
 ok( !$id_token_decoded->{name},         'Claim name must not be in ID token' );
-count(2);
+is( $id_token_decoded->{azp}, 'rpid',   ' azp found' );
+count(3);
 
 $op->logout($idpId);
 

lemonldap-ng-portal/t/32-OIDC-Offline-Session.t

@@ -51,6 +51,8 @@ sub runTest {
     ok( $id_token,      "Got ID token" );
 
     my $id_token_payload = id_token_payload($id_token);
+    my $auth_time = $id_token_payload->{auth_time};
+    ok( $auth_time, "Authentication date found in token");
     is(
         $id_token_payload->{name},
         'Frédéric Accents',
@@ -117,6 +119,7 @@ sub runTest {
     ok( !defined $refresh_token2, "Refresh token not present" );
 
     $id_token_payload = id_token_payload($id_token);
+    is( $id_token_payload->{auth_time}, $auth_time, 'Original auth_time retained' );
     is(
         $id_token_payload->{name},
         'Frédéric Accents',