Fix expect for python 3 (#24912)

* Fix expect for python 3

- Change generator next to python 3 compatible
- Added tests for expect

* Add pexpect to integration.txt

- add pexpect library to requirements for integration tests

* Use ansible_python_interpreter in integration tests for expect

* Use double-quotes for expect integration tests

* Cast user input to string for expect integration tests

* Cast user input to string earlier in expect integration tests

* Use ansible.module_utils.six.moves input for expect integration tests

* Fix yamllint errors in the expect test

* Use cat to trigger timeout for expect integration tests

* Use realpath filter in expect integration tests

lib/ansible/modules/commands/expect.py

@@ -116,7 +116,7 @@ def response_closure(module, question, responses):
 
     def wrapped(info):
         try:
-            return resp_gen.next()
+            return next(resp_gen)
         except StopIteration:
             module.fail_json(msg="No remaining responses for '%s', "
                                  "output was '%s'" %

test/integration/targets/expect/aliases

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

test/integration/targets/expect/files/foo.txt

@@ -0,0 +1 @@
+foo.txt

test/integration/targets/expect/files/test_command.py

@@ -0,0 +1,3 @@
+from ansible.module_utils.six.moves import input
+user_input = input('foo')
+print(user_input)

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

@@ -0,0 +1,96 @@
+# test code for the ping module
+# (c) 2014, James Cammarata <jcammarata@ansible.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: record the test_command file
+  set_fact: test_command_file={{output_dir | expanduser}}/test_command.py
+
+- name: copy script into output directory
+  copy: src=test_command.py dest={{test_command_file}} mode=0444
+
+- name: record the output file
+  set_fact: output_file={{output_dir}}/foo.txt
+
+- copy:
+   content: "foo"
+   dest: "{{output_file}}"
+
+- name: test expect
+  expect:
+    command: "{{ansible_python_interpreter}} {{test_command_file}}"
+    responses:
+      foo: bar
+  register: expect_result
+
+- name: assert expect worked
+  assert:
+    that:
+    - "expect_result.changed == true"
+    - "expect_result.stdout == 'foobar'"
+
+- name: test creates option
+  expect:
+    command: "echo"
+    responses:
+      foo: bar
+    creates: "{{output_file}}"
+  register: creates_result
+
+- name: assert when creates is provided command is not run
+  assert:
+    that:
+    - "creates_result.changed == false"
+
+- name: test chdir
+  expect:
+    command: "pwd"
+    chdir: "{{output_dir}}"
+    responses:
+      foo: bar
+  register: chdir_result
+
+- name: assert chdir works
+  assert:
+    that:
+    - "chdir_result.stdout == '{{output_dir | expanduser | realpath}}'"
+
+- name: test timeout option
+  expect:
+    command: "cat"
+    responses:
+      foo: bar
+    timeout: 0
+  ignore_errors: true
+  register: timeout_result
+
+- name: assert failure message when timeout
+  assert:
+    that:
+    - "timeout_result.msg == 'command exceeded timeout'"
+
+- name: test echo option
+  expect:
+    command: "{{ansible_python_interpreter}} {{test_command_file}}"
+    responses:
+      foo: bar
+    echo: true
+  register: echo_result
+
+- name: assert echo works
+  assert:
+    that:
+    - "'bar' in echo_result.stdout_lines"

test/runner/requirements/integration.txt

@@ -4,5 +4,6 @@ junit-xml
 ordereddict ; python_version < '2.7'
 paramiko
 passlib
+pexpect
 pycrypto
 pyyaml