unit test helper: big revamp (#8894)

* initial commit

* multiple changes:

- TestCaseContext fixture no longer need to autouse=True
- Helper.from_module() allows extra param to specify yaml file
- test_django_check: adjusted .py and .yaml

* set fixtures per testcase

* set fixtures per testcase

* rollback to original state

* patch_ansible_module fixture

- now it works not only in parametrized functions but also directly with args

* tests/unit/plugins/modules/helper.py

- improved encapsulation, class Helper no longer knows details about test cases
- test functions no longer parametrized, that allows using test case fixtures per test function
- renamed 'context' to 'mock'

* enable Helper.from_list(), better param name 'ansible_module'

* adjusted test fiels to new helper

* remove unnecessary .license file

* fix bracket

* fix reference name

* Update tests/unit/plugins/modules/helper.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* revert to parametrized test func instead of multiple funcs

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

tests/unit/plugins/modules/test_cpanm.yaml

@@ -10,7 +10,8 @@
     mode: compatibility
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/perl, -le, 'use Dancer;']
       environ: &env-def-false {environ_update: {LANGUAGE: C, LC_ALL: C}, check_rc: false}
       rc: 2
@@ -27,7 +28,8 @@
     mode: compatibility
   output:
     changed: false
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/perl, -le, 'use Dancer;']
       environ: *env-def-false
       rc: 0
@@ -38,7 +40,8 @@
     name: Dancer
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, Dancer]
       environ: *env-def-true
       rc: 0
@@ -50,7 +53,8 @@
     mode: compatibility
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, MIYAGAWA/Plack-0.99_05.tar.gz]
       environ: *env-def-true
       rc: 0
@@ -61,7 +65,8 @@
     name: MIYAGAWA/Plack-0.99_05.tar.gz
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, MIYAGAWA/Plack-0.99_05.tar.gz]
       environ: *env-def-true
       rc: 0
@@ -74,7 +79,8 @@
     locallib: /srv/webapps/my_app/extlib
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, --local-lib, /srv/webapps/my_app/extlib, Dancer]
       environ: *env-def-true
       rc: 0
@@ -86,7 +92,8 @@
     mode: new
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, /srv/webapps/my_app/src/]
       environ: *env-def-true
       rc: 0
@@ -100,7 +107,8 @@
     locallib: /srv/webapps/my_app/extlib
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, --notest, --local-lib, /srv/webapps/my_app/extlib, Dancer]
       environ: *env-def-true
       rc: 0
@@ -113,7 +121,8 @@
     mirror: "http://cpan.cpantesters.org/"
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, --mirror, "http://cpan.cpantesters.org/", Dancer]
       environ: *env-def-true
       rc: 0
@@ -126,7 +135,8 @@
     system_lib: true
   output:
     failed: true
-  run_command_calls: []
+  mocks:
+    run_command: []
 - id: install_minversion_implicit
   input:
     name: Dancer
@@ -134,7 +144,8 @@
     version: "1.0"
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, Dancer~1.0]
       environ: *env-def-true
       rc: 0
@@ -147,7 +158,8 @@
     version: "~1.5"
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, Dancer~1.5]
       environ: *env-def-true
       rc: 0
@@ -160,7 +172,8 @@
     version: "@1.7"
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, Dancer@1.7]
       environ: *env-def-true
       rc: 0
@@ -174,7 +187,8 @@
   output:
     failed: true
     msg: parameter 'version' must not be used when installing from a file
-  run_command_calls: []
+  mocks:
+    run_command: []
 - id: install_specific_version_from_directory_error
   input:
     from_path: ~/
@@ -183,7 +197,8 @@
   output:
     failed: true
     msg: parameter 'version' must not be used when installing from a directory
-  run_command_calls: []
+  mocks:
+    run_command: []
 - id: install_specific_version_from_git_url_explicit
   input:
     name: "git://github.com/plack/Plack.git"
@@ -191,7 +206,8 @@
     version: "@1.7"
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, "git://github.com/plack/Plack.git@1.7"]
       environ: *env-def-true
       rc: 0
@@ -204,7 +220,8 @@
     version: "2.5"
   output:
     changed: true
-  run_command_calls:
+  mocks:
+    run_command:
     - command: [/testbin/cpanm, "git://github.com/plack/Plack.git@2.5"]
       environ: *env-def-true
       rc: 0
@@ -218,4 +235,5 @@
   output:
     failed: true
     msg: operator '~' not allowed in version parameter when installing from git repository
-  run_command_calls: []
+  mocks:
+    run_command: []