add tests

test/integration/targets/handlers/handlers_lockstep_83019-include-nested.yml

@@ -0,0 +1,3 @@
+- name: handler1
+  debug:
+    msg: handler1

test/integration/targets/handlers/handlers_lockstep_83019-include.yml

@@ -0,0 +1,6 @@
+- include_tasks: handlers_lockstep_83019-include-nested.yml
+  when: inventory_hostname == "A"
+
+- name: handler2
+  debug:
+    msg: handler2

test/integration/targets/handlers/handlers_lockstep_83019.yml

@@ -0,0 +1,8 @@
+- hosts: A,B
+  gather_facts: false
+  tasks:
+    - command: echo
+      notify: handler
+  handlers:
+    - name: handler
+      include_tasks: handlers_lockstep_83019-include.yml

test/integration/targets/handlers/runme.sh

@@ -219,3 +219,6 @@ ansible-playbook 82241.yml -i inventory.handlers "$@" 2>&1 | tee out.txt
 
 ansible-playbook handlers_lockstep_82307.yml -i inventory.handlers "$@" 2>&1 | tee out.txt
 [ "$(grep out.txt -ce 'TASK \[handler2\]')" = "0" ]
+
+ansible-playbook handlers_lockstep_83019.yml -i inventory.handlers "$@" 2>&1 | tee out.txt
+[ "$(grep out.txt -ce 'TASK \[handler1\]')" = "0" ]