#10583 - bring forward test that was never merged in Grails 3.3

app1/grails-app/controllers/functionaltests/UrlMappings.groovy

@@ -22,6 +22,8 @@ class UrlMappings {
         "/old-controller-action-with-params"(redirect: [controller: 'baz', action: 'newUrl', keepParamsWhenRedirect: true])
         "/new-url"(controller: 'baz', 'action': 'newUrl')
 
+        "/forward/$param1"(controller: 'forwarding', action: 'two')
+
         "/"(view:"/index")
         "500"(view:'/error')
         "404"(controller:"errors", action:"notFound")

app1/src/integration-test/groovy/functionaltests/ForwardingSpec.groovy

@@ -9,6 +9,19 @@ import grails.testing.mixin.integration.Integration
 @Integration(applicationClass = Application)
 @Rollback
 class ForwardingSpec extends ContainerGebSpec {
+    void "params extracted from the URL path by a custom UrlMapping are forwarded"() {
+        when: 'a url mapping such as /forward/$param1 is matched'
+        go '/forward/test'
+        then: 'param1 is passed to the forwarded action'
+        $().text() == 'Forward Destination. Params: test'
+    }
+
+    void "verifies params from the original url are passed to the forwarded action but not duplicated"() {
+        when:
+        go '/forwarding/two?param1=test'
+        then:
+        $().text() == 'Forward Destination. Params: test'
+    }
 
     void "Test forward to same controller"() {
         when:"A forward is issued to an action in the same controller"