Print debug output during tests.

tests/integration/targets/alternatives/tasks/subcommands.yml

@@ -32,6 +32,15 @@
     that:
       - cmd.stdout == "dummy2"
 
+- name: Get dummymain alternatives output
+  command:
+    argv: '{{ alternatives_command }} --display dummymain'
+  register: result
+
+- name: Print result
+  debug:
+    var: result.stdout_lines
+
 - name: Subcommands are not removed if not specified
   alternatives:
     name: dummymain
@@ -75,4 +84,13 @@
   assert:
     that:
       - cmd.rc == 2
-      - '"No such file" in cmd.msg'
+      - '"No such file" in cmd.msg'
+
+- name: Get dummymain alternatives output
+  command:
+    argv: '{{ alternatives_command }} --display dummymain'
+  register: result
+
+- name: Print result
+  debug:
+    var: result.stdout_lines

tests/integration/targets/alternatives/vars/Debian.yml

@@ -1,2 +1,3 @@
 ---
 alternatives_dir: /var/lib/dpkg/alternatives/
+alternatives_command: update-alternatives

tests/integration/targets/alternatives/vars/Suse-42.3.yml

@@ -1,2 +1,3 @@
 ---
 alternatives_dir: /var/lib/rpm/alternatives/
+alternatives_command: update-alternatives

tests/integration/targets/alternatives/vars/default.yml

@@ -1,2 +1,3 @@
 ---
 alternatives_dir: /var/lib/alternatives/
+alternatives_command: update-alternatives