Megatest

// This file is part of Megatest.
// 
//     Megatest 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.
// 
//     Megatest 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 Megatest.  If not, see <http://www.gnu.org/licenses/>.

Reference
---------

Megatest Use Modes
~~~~~~~~~~~~~~~~~~

.Base commands
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|======================
|Use case	         | Megatest command	|  mtutil
|Start from scratch       |	-rerun-all	|  restart	
|Rerun non-good completed |	-rerun-clean	|  rerunclean	
|Rerun all non-good and not completed yet | -set-state-status KILLREQ; -rerun-|clean | killrerun	
|Continue run             |	-run	        |  resume	
|Remove run	         |      -remove-runs	|  clean	
|Lock run	         |      -lock	        |  lock	
|Unlock run	         |      -unlock	        |  unlock	
|killrun	                 | -set-state-status KILLREQ; -kill-run	| killrun	
|======================

Config File Helpers
~~~~~~~~~~~~~~~~~~~

Various helpers for more advanced config files.

.Helpers
[width="80%",cols="^,2m,2m,2m",frame="topbot",options="header"]

-------------------------
[a/2/b]
VAR1 VAL2
-------------------------

Can use either wildcard of "%" or a regular expression:

-------------------------
[/abc.*def/]
-------------------------

Disk Space Checks

~~~~~~~~~~~~~~~~~

Some parameters you can put in the [setup] section of megatest.config:

-------------------
# minimum space required in a run disk 
minspace 10000000

# minimum space required in dbdir:
dbdir-space-required 100000

# script that takes path as parameter and returns number of bytes available:
free-space-script check-space.sh
-------------------

Trim trailing spaces

~~~~~~~~~~~~~~~~~~~~

------------------
[configf:settings trim-trailing-spaces yes]
------------------

Job Submission Control

~~~~~~~~~~~~~~~~~~~~~~

Submit jobs to Host Types based on Test Name

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.In megatest.config
------------------------
[host-types]
general   nbfake
remote    bsub

.In megatest.config
------------------
[setup]
reruns 5
------------------

Replace the default blacklisted environment variables with user supplied
list.

Default list: USER HOME DISPLAY LS_COLORS XKEYSYMDB EDITOR MAKEFLAGS MAKEF MAKEOVERRIDES

.Add a "bad" variable "PROMPT" to the variables that will be commented out
in the megatest.sh and megatest.csh files:
-----------------
[setup]
blacklistvars USER HOME DISPLAY LS_COLORS XKEYSYMDB EDITOR MAKEFLAGS PROMPT
-----------------

Run time limit
++++++++++++++

-----------------
[setup]
# this will automatically kill the test if it runs for more than 1h 2m and 3s
runtimelim 1h 2m 3s

well in that mode then use "nodot" to turn it off.

-----------------
[setup]
nodot
-----------------

Capturing Test Data
~~~~~~~~~~~~~~~~~~~

In a test you can capture arbitrary variables and roll them up in the
megatest database for viewing on the dashboard or web app.

.In a test as a script
------------------------
$MT_MEGATEST -load-test-data << EOF
foo,bar,   1.2,  1.9, >
foo,rab, 1.0e9, 10e9, 1e9
foo,bla,   1.2,  1.9, <
foo,bal,   1.2,  1.2, <   ,     ,Check for overload
foo,alb,   1.2,  1.2, <=  , Amps,This is the high power circuit test
foo,abl,   1.2,  1.3, 0.1
foo,bra,   1.2, pass, silly stuff
faz,bar,    10,  8mA,     ,     ,"this is a comment"
EOF
------------------------

Alternatively you can use logpro triggers to capture values and inject them
into megatest using the -set-values mechanism:

.Megatest help related to -set-values
------------------------
Test data capture
  -set-values             : update or set values in the testdata table
  :category               : set the category field (optional)
  :variable               : set the variable name (optional)
  :value                  : value measured (required)
  :expected               : value expected (required)
  :tol                    : |value-expect| <= tol (required, can be <, >, >=, <= or number)
  :units                  : name of the units for value, expected_value etc. (optional)
------------------------

Dashboard settings
~~~~~~~~~~~~~~~~~~

.Runs tab buttons, font and size
------------------
[dashboard]
btn-height x14
btn-fontsz 10
cell-width 60
------------------

Database settings
~~~~~~~~~~~~~~~~~

.Database config settings in [setup] section of megatest.config
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|======================
|Var                       | Purpose            | Valid values            | Comments
|delay-on-busy             | Prevent concurrent access issues | yes\|no or not defined | Default=no, may help on some network file systems, may slow things down also.

|faststart		   | All direct file access to sqlite db files | yes\|no or not defined | Default=yes, suggest no for central automated systems and yes for interactive use
|homehost 		   | Start servers on this host | <hostname> | Defaults to local host
|hostname		   | Hostname to bind to | <hostname>\|-	  | On multi-homed hosts allows binding to specific hostname
|lowport		   | Start searching for a port at this portnum| 32768 | 
|required		   | Server required    | yes\|no or not defined  | Default=no, force start of server always
|server-query-threshold	   | Start server when queries take longer than this | number in milliseconds | Default=300
|timeout		   | http api timeout 	| number in hours	  | Default is 1 minute, do not change

The runscript method is a brute force way to run scripts where the
user is responsible for setting STATE and STATUS

-------------------
runscript main.csh
-------------------

Iteration
~~~~~~~~~

.Sections for iteration
------------------
# full combinations
[items]
A x y
B 1 2

# Yields: x/1 x/2 y/1 y/2

# tabled
[itemstable]
A x y
B 1 2

# Yields x/1 y/2
------------------

.Or use files
------------------
[itemopts]
slash path/to/file/with/items
# or
space path/to/file/with/items
------------------

.File format for / delimited
------------------
key1/key2/key3
val1/val2/val2
...
------------------

.File format for space delimited
------------------
key1 key2 key3
val1 val2 val2
...
------------------

Requirements section
~~~~~~~~~~~~~~~~~~~~

.Header
-------------------
[requirements]
-------------------

Wait on Other Tests

~~~~~~~~~~~~~~~~~~~

-------------------
# A normal waiton waits for the prior tests to be COMPLETED 
# and PASS, CHECK or WAIVED
waiton test1 test2
-------------------

Mode

~~~~

The default (i.e. if mode is not specified) is normal. All pre-dependent tests
must be COMPLETED and PASS, CHECK or WAIVED before the test will start

-------------------
[requirements]
mode   normal

Itemmap Handling
~~~~~~~~~~~~~~~~

For cases were the dependent test has a similar but not identical
itempath to the downstream test an itemmap can allow for itemmatch
mode

.example for removing part of itemmap for waiton test (eg: item +foo-x/bar+ depends on waiton's item +y/bar+)
-------------------
[requirements]
mode itemwait
# itemmap <item pattern for this test>  <item replacement pattern for waiton test>
itemmap .*x/ y/

-------------------

.example for removing part of itemmap for waiton test (eg: item +foo/bar/baz+ in this test depends on waiton's item +baz+)
-------------------

# ## pattern replacement notes
#
# ## Example
# ## Remove everything up to the last /
[requirements]
mode itemwait
# itemmap <item pattern for this test> <nothing here indicates removal>
itemmap .*/
-------------------

.example replacing part of itemmap for (eg: item +foo/1234+ will imply waiton's item +bar/1234+)
-------------------

#
# ## Example
# ## Replace foo/ with bar/
[requirements]
mode itemwait
# itemmap <item pattern for this test>  <item replacement pattern for waiton test>
itemmap foo/ bar/

-------------------

.example for backreference (eg: item +foo23/thud+ will imply waiton's item +num-23/bar/thud+
-------------------
#
# ## Example
# ## can use \{number} in replacement pattern to backreference a (capture) from matching pattern similar to sed or perl
[requirements]
mode itemwait
# itemmap <item pattern for this test>  <item replacement pattern for waiton test>
itemmap foo(\d+)/ num-\1/bar/

-------------------

.example multiple itemmaps
-------------------

# multi-line; matches are applied in the listed order
# The following would map:
#   a123b321 to b321fooa123 then to 321fooa123p
#
[requirements]
itemmap (a\d+)(b\d+) \2foo\1
  b(.*) \1p
-------------------


Complex mapping

~~~~~~~~~~~~~~~
Complex mappings can be handled with a separate [itemmap] section (instead if an itemmap line in the [requirements] section)



Each line in an itemmap section starts with a waiton test name followed by an itemmap expression







.eg: The following causes waiton test A item +bar/1234+ to run when our test's +foo/1234+ item is requested as well as causing waiton test B's +blah+ item to run when our test's +stuff/blah+ item is requested

--------------



[itemmap]
A foo/ bar/
B stuff/
--------------


Complex mapping example
~~~~~~~~~~~~~~~~~~~~~~~


// image::itemmap.png[]
image::complex-itemmap.png[]

We accomplish this by configuring the testconfigs of our tests C D and E as follows:

.Testconfig for Test E has
----------------------
[requirements]
waiton C
itemmap (\d+)/res \1/bb
----------------------

.Testconfig for Test D has
----------------------
[requirements]
waiton C
itemmap (\d+)/res \1/aa
----------------------

.Testconfig for Test C has
----------------------
[requirements]
waiton A B

[itemmap]
A (\d+)/aa aa/\1
B (\d+)/bb bb/\1
----------------------

.Testconfigs for Test B and Test A have no waiton or itemmap configured
-------------------
-------------------

.Walk through one item -- we want the following to happen for testpatt +D/1/res+ (see blue boxes in complex itemmaping figure above):

. eg from command line +megatest -run -testpatt D/1/res -target mytarget -runname myrunname+
. Full list to be run is now: +D/1/res+
. Test D has a waiton - test C.  Test D's itemmap rule +itemmap (\d&plus;)/res \1/aa+ ->  causes +C/1/aa+ to run before +D/1/res+
. Full list to be run is now: +D/1/res+, +C/1/aa+
. Test C was a waiton - test A. Test C's rule +A (\d&plus;)/aa aa/\1+ -> causes +A/aa/1+ to run before +C/1/aa+
. Full list to be run is now: +D/1/res+, +C/1/aa+, +A/aa/1+
. Test A has no waitons.  All waitons of all tests in full list have been processed.  Full list is finalized.



itemstable
~~~~~~~~~~
An alternative to defining items is the itemstable section.  This lets you define the itempath in a table format rather than specifying components and relying on getting all permutations of those components.

Dynamic Flow Dependency Tree

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.Autogeneration waiton list for dynamic flow dependency trees
-------------------
[requirements]
# With a toplevel test you may wish to generate your list 
# of tests to run dynamically
#
waiton #{shell get-valid-tests-to-run.sh}
-------------------

Run time limit

~~~~~~~~~~~~~~

-----------------
[requirements]
runtimelim 1h 2m 3s  # this will automatically kill the test if it runs for more than 1h 2m and 3s
-----------------

Skip

~~~~

A test with a skip section will conditional skip running.

.Skip section example
-----------------
[skip]
prevrunning x
# rundelay 30m 15s
-----------------

Skip on Still-running Tests

~~~~~~~~~~~~~~~~~~~~~~~~~~~

-----------------
# NB// If the prevrunning line exists with *any* value the test will
# automatically SKIP if the same-named test is currently RUNNING. The
# "x" can be any string. Comment out the prevrunning line to turn off
# skip.

[skip]
prevrunning x
-----------------

Skip if a File Exists
~~~~~~~~~~~~~~~~~~~~~

-----------------
[skip]
fileexists /path/to/a/file # skip if /path/to/a/file exists
-----------------

Skip if a File Does not Exist
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-----------------
[skip]
filenotexists /path/to/a/file # skip if /path/to/a/file does not exist
-----------------

Skip if a script completes with 0 status
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-----------------
[skip]
script /path/to/a/script # skip if /path/to/a/script completes with 0 status
-----------------

Skip if test ran more recently than specified time

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.Skip if this test has been run in the past fifteen minutes and 15 seconds.
-----------------
[skip]
rundelay 15m 15s
-----------------

Disks

~~~~~

A disks section in testconfig will override the disks section in
megatest.config. This can be used to allocate disks on a per-test or per item
basis.

Controlled waiver propagation

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If test is FAIL and previous test in run with same MT_TARGET is WAIVED then apply the following rules from the testconfig:
If a waiver check is specified in the testconfig apply the check and if it passes then set this FAIL to WAIVED

Waiver check has two parts, 1) a list of waiver, rulename, filepatterns and 2) the rulename script spec (note that "diff" and "logpro" are predefined)

-----------------

  ;;     a blank line indicates the end of the block of text 
  (expect:required in "LogFileBody" > 0 "A file name that should never exist!" #/This is a awfully stupid file name that should never be found in the temp dir/)

-----------------

To transfer the environment to the next step you can do the following:

.Propagate environment to next step
----------------------------
$MT_MEGATEST -env2file .ezsteps/${stepname}	  
----------------------------

Scripts
~~~~~~~

.Specifying scripts inline (best used for only simple scripts)
----------------------------
[scripts]
loaddb #!/bin/bash
  sqlite3 $1 <<EOF
  .mode tabs
  .import $2 data
  .q
  EOF
----------------------------

The above snippet results in the creation of an executable script
called "loaddb" in the test directory. NOTE: every line in the script
must be prefixed with the exact same number of spaces. Lines beginning
with a # will not work as expected. Currently you cannot indent
intermediate lines.

.Full example with ezsteps, logpro rules, scripts etc.
-----------------
# You can include a common file
#
[include #{getenv MT_RUN_AREA_HOME}/global-testconfig.inc]

# Use "var" for a scratch pad
#
[var]
dumpsql select * from data;
sepstr .....................................

# NOT IMPLEMENTED YET!
#
[ezsteps-addendum]
prescript something.sh
postscript something2.sh

# Add additional steps here. Format is "stepname script"
[ezsteps]
importdb loaddb prod.db prod.sql
dumpprod dumpdata prod.db "#{get var dumpsql}"
diff (echo "prod#{get var sepstr}test";diff --side-by-side \
     dumpprod.log reference.log ;echo DIFFDONE)

[scripts]
loaddb #!/bin/bash
  sqlite3 $1 <<EOF
  .mode tabs
  .import $2 data
  .q
  EOF

dumpdata #!/bin/bash
  sqlite3 $1 <<EOF
  .separator ,
  $2
  .q
  EOF

# Test requirements are specified here
[requirements]
waiton setup
priority 0

# Iteration for your test is controlled by the items section
# The complicated if is needed to allow processing of the config for the dashboard when there are no actual runs.
[items]
THINGNAME [system generatethings.sh | sort -u]

# Logpro rules for each step can be captured here in the testconfig
# note: The ;; after the stepname and the leading whitespace are required
#
[logpro]
inputdb ;; 
  (expect:ignore   in "LogFileBody"  < 99 "Ignore error in comments"      #/^\/\/.*error/)
  (expect:warning  in "LogFileBody"  = 0 "Any warning"                    #/warn/)
  (expect:required in "LogFileBody"  > 0 "Some data found"                #/^[a-z]{3,4}[0-9]+_r.*/)

diff ;; 
  (expect:ignore   in "LogFileBody"  < 99 "Ignore error in comments"      #/^\/\/.*error/)
  (expect:warning  in "LogFileBody"  = 0 "Any warning"                    #/warn/)
  (expect:error    in "LogFileBody"  = 0 "< or > indicate missing entry"  (list #/(<|>)/   #/error/i))
  (expect:error    in "LogFileBody"  = 0 "Difference in data"             (list #/\s+\|\s+/ #/error/i))
  (expect:required in "LogFileBody"  > 0 "DIFFDONE Marker found"          #/DIFFDONE/)
  (expect:required in "LogFileBody"  > 0 "Some things found"              #/^[a-z]{3,4}[0-9]+_r.*/)

# NOT IMPLEMENTED YET!
#
## Also: enhance logpro to take list of command files: file1,file2...
[waivers]
createprod{target=%78/%/%/%} ;;
  (disable:required "DIFFDONE Marker found")
  (disable:error    "Some error")
  (expect:waive  in "LogFileBody" < 99 "Waive if failed due to version" #/\w+3\.6.*/)

# test_meta is a section for storing additional data on your test
[test_meta]
author matt
owner  matt
description Compare things
tags tagone,tagtwo
reviewed never
-----------------

Triggers
~~~~~~~~

In your testconfig or megatest.config triggers can be specified 

.Triggers spec
-----------------
[triggers]

# Call script running.sh when test goes to state=RUNNING, status=PASS
RUNNING/PASS running.sh

# Call script running.sh any time state goes to RUNNING
RUNNING/ running.sh

# Call script onpass.sh any time status goes to PASS
PASS/ onpass.sh
-----------------

Scripts called will have; test-id test-rundir trigger test-name item-path state status event-time, added to the commandline.

HINT

To start an xterm (useful for debugging), use a command line like the following:

.Start an xterm using a trigger for test completed.
-----------------
[triggers]
COMPLETED/ xterm -e bash -s -- 
-----------------

NOTE: There is a trailing space after the double-dash

There are a number of environment variables available to the trigger script
but since triggers can be called in various contexts not all variables are
available at all times. The trigger script should check for the variable and
fail gracefully if it doesn't exist.

// ,cols="^,2m"

.Environment variables visible to the trigger script
[width="90%",frame="topbot",options="header"]
|======================
| Variable            | Purpose            
| MT_TEST_RUN_DIR     | The directory where Megatest ran this test                   
| MT_CMDINFO          | Encoded command data for the test                   
| MT_DEBUG_MODE       | Used to pass the debug mode to nested calls to Megatest                   
| MT_RUN_AREA_HOME    | Megatest home area 
| MT_TESTSUITENAME    | The name of this testsuite or area                   
| MT_TEST_NAME        | The name of this test
| MT_ITEM_INFO        | The variable and values for the test item
| MT_MEGATEST         | Which Megatest binary is being used by this area
| MT_TARGET           | The target variable values, separated by '/'
| MT_LINKTREE         | The base of the link tree where all run tests can be found
| MT_ITEMPATH         | The values of the item path variables, separated by '/'
| MT_RUNNAME          | The name of the run
|======================


Override the Toplevel HTML File
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Megatest generates a simple html file summary for top level tests of
iterated tests. The generation can be overridden. NOTE: the output of

# Archives will be organised under these paths like this:
#  <testsuite>/<creationdate>
# Within the archive the data is structured like this:
#  <target>/<runname>/<test>/
archive0 /mfs/myarchive-data/adisk1
--------------

Environment Variables
---------------------

It is often necessary to capture and or manipulate environment
variables. Megatest has some facilities built in to help.

Capture variables
~~~~~~~~~~~~~~~~~

megatest -envcap after startup.db

# write the diff from before to after
megatest -envdelta before-after -dumpmode bash
------------------------------

Dump modes include bash, csh and config. You can include config data
into megatest.config, runconfigs.config and testconfig files. This is
useful for capturing a complex environment in a special-purpose test
and then utilizing that environment in downstream tests.

.Example of generating and using config data
------------------------------
megatest -envcap original
# do some stuff here
megatest -envcap munged
megatest -envdelta original-munged -dumpmode ini -o modified.config
------------------------------

Then in runconfigs.config

.Example of using modified.config in a testconfig
------------------------------


[pre-launch-env-vars]
[include modified.config]
------------------------------

Managing Old Runs
-----------------

It is often desired to keep some older runs around but this must be balanced with the costs of disk space.

. Use -remove-keep
. Use -archive (can also be done from the -remove-keep interface)
. use -remove-runs with -keep-records

.For each target, remove all runs but the most recent 3 if they are over 1 week old
---------------------
# use -precmd 'sleep 5;nbfake' to limit overloading the host computer but to allow the removes to run in parallel.
megatest -actions print,remove-runs -remove-keep 3 -target %/%/%/% -runname % -age 1w -precmd 'sleep 5;nbfake'"
---------------------

Nested Runs
-----------

A Megatest test can run a full Megatest run in either the same
Megatest area or in another area. This is a powerful way of chaining
complex suites of tests and or actions.

If you are not using the current area you can use ezsteps to retrieve
and setup the sub-Megatest run area.

In the testconfig:
---------------
[subrun]

# Required: wait for the run or just launch it
#           if no then the run will be an automatic PASS irrespective of the actual result
run-wait yes|no

# Optional: where to execute the run. Default is the current runarea
run-area /some/path/to/megatest/area

# Optional: method to use to determine pass/fail status of the run
#   auto (default) - roll up the net state/status of the sub-run
#   logpro         - use the provided logpro rules, happens automatically if there is a logpro section
# passfail auto|logpro
# Example of logpro:
passfail logpro

# Optional: 
logpro ;; if this section exists then logpro is used to determine pass/fail
  (expect:required in "LogFileBody" >= 1 "At least one pass" #/PASS/)
  (expect:error     in "LogFileBody"  = 0 "No FAILs allowed"  #/FAIL/)

# Optional: target translator, default is to use the parent target
target #{shell somescript.sh}

# Optional: runname translator/generator, default is to use the parent runname
run-name #{somescript.sh}

# Optional: testpatt spec, default is to first look for TESTPATT spec from runconfigs unless there is a contour spec
test-patt %/item1,test2

# Optional: contour spec, use the named contour from the megatest.config contour spec
contour contourname ### NOTE: Not implemented yet! Let us know if you need this feature.

# Optional: mode-patt, use this spec for testpatt from runconfigs
mode-patt TESTPATT

# Optional: tag-expr, use this tag-expr to select tests
tag-expr quick

# Optional: (not yet implemented, remove-runs is always propagated at this time), propagate these actions from the parent
#           test
#   Note// default is % for all
propagate remove-runs archive ...

---------------

Programming API
---------------

These routines can be called from the megatest repl. 

.API Keys Related Calls
[width="70%",cols="^,2m,2m,2m",frame="topbot",options="header,footer"]
|======================
|API Call                        | Purpose comments   | Returns                 | Comments
|(rmt:get-keys run-id)           |                    | ( key1 key2 ... )       | 
| (rmt:get-key-val-pairs run-id) |                    | #t=success/#f=fail      | Works only if the server is still reachable
|======================


:numbered!: