win_chocolatey: Add integration tests (#21930)

And also fix a known issue.

lib/ansible/modules/windows/win_chocolatey.ps1

@@ -110,7 +110,7 @@ Function Choco-IsInstalled
         Throw "Error checking installation status for $package"
     }
 
-    If ("$results" -match "$package .* (\d+) packages installed.")
+    If ("$output" -match "(\d+) packages installed.")
     {
         return $matches[1] -gt 0
     }
@@ -200,7 +200,7 @@ Function Choco-Upgrade
         Throw "Error installing $package"
     }
 
-    if ("$results" -match ' upgraded (\d+)/\d+ package\(s\)\. ')
+    if ("$output" -match ' upgraded (\d+)/\d+ package\(s\)\. ')
     {
         if ($matches[1] -gt 0)
         {

test/integration/targets/win_chocolatey/aliases

@@ -0,0 +1 @@
+windows/ci/group2

test/integration/targets/win_chocolatey/tasks/main.yml

@@ -0,0 +1,61 @@
+# test code for the win_chocolatey module
+# (c) 2017, Dag Wieers <dag@wieers.com>
+
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+- name: install sysinternals
+  win_chocolatey:
+    name: sysinternals
+    state: present
+  register: install_sysinternals
+
+- name: verify install sysinternals
+  assert:
+    that:
+    - 'install_sysinternals.changed == true'
+
+- name: install sysinternals again
+  win_chocolatey:
+    name: sysinternals
+    state: present
+  register: install_sysinternals_again
+
+- name: verify install sysinternals again
+  assert:
+    that:
+    - 'install_sysinternals_again.changed == false'
+
+- name: remove sysinternals
+  win_chocolatey:
+    name: sysinternals
+    state: absent
+  register: remove_sysinternals
+
+- name: verify remove sysinternals
+  assert:
+    that:
+    - 'remove_sysinternals.changed == true'
+
+- name: remove sysinternals again
+  win_chocolatey:
+    name: sysinternals
+    state: absent
+  register: remove_sysinternals_again
+
+- name: verify remove sysinternals again
+  assert:
+    that:
+    - 'remove_sysinternals_again.changed == false'