refactor(saltcheck): relocate .tst files according to 1:1 .sls files

* https://github.com/saltstack-formulas/cron-formula/pull/4#issuecomment-544140377

cron/config/saltcheck-tests/file.tst

@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+# vim: ft=sls
+
+{%- set cron = salt['pillar.get']('cron', {}) %}
+
+{%- for task, task_options in cron.get('tasks', {}).items() %}
+{%-   set cron_type = task_options.type|d('present') %}
+
+validate_cron.{{ task }}_{{ cron_type }}:
+  module_and_function: cron.get_entry
+  args:
+    - {{ task_options.user|d('root') }}
+    - {{ task }}
+  {%- if cron_type == 'absent' %}
+  assertion: assertFalse
+  {%- else %}
+  assertion: assertEqual
+  assertion_section: identifier
+  expected-return: {{ task }}
+  {%- endif %}
+
+{%-   if cron_type == 'present' %}
+validate_cron.{{ task }}_commented:
+  module_and_function: cron.get_entry
+  args:
+    - {{ task_options.user|d('root') }}
+    - {{ task }}
+  assertion: {{ 'assertTrue' if task_options.commented|d(False) else 'assertFalse' }}
+  assertion_section: commented
+
+{#-     Note: `special` is `spec` in the module #}
+{%-     for section in ['minute', 'hour', 'daymonth', 'month', 'dayweek', 'comment', 'spec'] %}
+{%-       if section in task_options %}
+{%-         set expected = task_options[section] %}
+validate_cron.{{ task }}_{{ section }}:
+  module_and_function: cron.get_entry
+  args:
+    - {{ task_options.user|d('root') }}
+    - {{ task }}
+  assertion: {{ 'assertLessEqual' if expected == 'random' else 'assertEqual' }}
+  assertion_section: {{ section }}
+  expected-return: '{{ 0 if expected == 'random' else expected }}'
+{%-       endif %}
+{%-     endfor %}
+{%-   endif %}
+
+{%- endfor %}