refactor: move nagios specifs to nagios_test

nagios_test.run takes a function and executes it.
If it returns nothing or 0 and OK nagios message is printed.
If it returns sth. else this will be printed a a warning
If it raises an exception that will result in a CRITICAL report.

This way we can keep the nagios things outside the test cases and just write simple functions that either return 0, a warnign or raise a meaningful exception

1 files changed, 49 insertions, 0 deletions

diff --git a/test/nagios/nagios_test.py b/test/nagios/nagios_test.py
new file mode 100644
index 0000000..3eb8d55
--- /dev/null
+++ b/test/nagios/nagios_test.py
@@ -0,0 +1,49 @@
+import __main__ as main
+import os
+import sys
+import nagios_report
+
+def run(test):
+    """
+    run takes a function and tries it out.
+    If it returns nothing or 0 everything is fine and run prints an OK message
+    with the function name.
+    >>> def this_works_fine(): return
+    >>> run(this_works_fine)
+    0 nagios_test.py - OK - this_works_fine
+    0
+    >>> def this_also_works_fine(): return 0
+    >>> run(this_also_works_fine)
+    0 nagios_test.py - OK - this_also_works_fine
+    0
+
+    If the function returns something else it will be printed as a warning.
+    >>> run(lambda : "this is a warning")
+    1 nagios_test.py - WARNING - this is a warning
+    1
+
+    Errors raised will result in a CRITICAL nagios string.
+    >>> def failure(): raise Exception("something went wrong")
+    >>> run(failure)
+    2 nagios_test.py - CRITICAL - something went wrong
+    2
+    """
+    try:
+        name = os.path.basename(main.__file__)
+    except AttributeError: 
+        name = sys.argv[0]
+    ok, warn, fail, unknown = nagios_report.functions_for_system(name)
+    try:
+        warning = test()
+        if warning and warning != 0:
+            code = warn(warning)
+        else:
+            code = ok(test.__name__)
+    except Exception as exc:
+        code = fail(exc.message or str(exc))
+    return code
+
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()