Adding listen to set of test

Signed-off-by: Francisco Javier Tirado Sarti <ftirados@redhat.com>

Author: fjtirado

api/src/test/java/io/serverlessworkflow/api/FeaturesTest.java

@@ -42,7 +42,8 @@ public class FeaturesTest {
         "features/raise.yaml",
         "features/set.yaml",
         "features/switch.yaml",
-        "features/try.yaml"
+        "features/try.yaml",
+        "features/listen.yaml"
       })
   public void testSpecFeaturesParsing(String workflowLocation) throws IOException {
     Workflow workflow = readWorkflowFromClasspath(workflowLocation);

api/src/test/resources/features/listen.yaml

@@ -0,0 +1,12 @@
+document:
+  dsl: 1.0.0-alpha1
+  namespace: default
+  name: listen-task
+do:
+  - listenToSomething:
+      listen:
+        to:
+          any:
+            with: 
+              source: pepe
+              type: pepe