doc/man3/tst_res.3

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.TH TST_RES 3 01/21/2011 "Linux Test Project"
.SH NAME
tst_resm \- Print result message
.sp
tst_resm_hexd \- Print result message, including specified buffer in hexadecimal format
.sp
tst_brkm \- Print result message and break remaining test cases
.sp
tst_old_flush \- Print any messages pending because of CONDENSE mode, and flush output stream
.sp
tst_exit \- Exit test with a meaningful exit value
.sp
tst_environ \- Keep results coming to original stdout
.SH SYNOPSIS
\fB#include "test.h"\fR
.P
.P
\fBvoid tst_resm(int \fIttype\fB, char *\fItmesg, [arg ...]\fR)
.P
\fBvoid tst_resm_hexd(int \fIttype\fB, const void *\fIbuf\fB, size_t \fIsize\fB,
char *\fItmesg, [arg ...]\fR)
.P
\fBvoid tst_brkm(int \fIttype\fB, void (*\fIfunc\fB)(), char *\fItmesg,
[arg ...]\fR)
.P
\fBvoid tst_old_flush()
.P
\fBvoid tst_exit()
.P
\fBint  tst_environ()
.P
\fBextern int tst_count;
.br
extern int tst_range;
.br
\fR
.SH DESCRIPTION
.SS Introduction
This library of functions are used by UNICOS tests to report results to
standard output in a consistent manner.  It is assumed that tests using this
library have a distinct number of test cases, and that each test case is
distinct and uniquely identified by the test case number.  It is also assumed
that test case results are printed in consecutive order, starting with 1.
The library maintains a set of global variables (\fBTCID\fR, \fBTST_TOTAL\fR,
\fBtst_count\fR), which are used by the various functions to format the
results and to keep track of the current result reporting state (i.e. how many
total test cases there are, and how many have been reported so far) for the
calling test.
.P
The \fBTCID\fR and \fBTST_TOTAL\fR global variables are externed in the
library, and MUST be defined/initialized by tests using the library.
\fBTCID\fR must be set to the \fBT\fRest \fBC\fRase \fBID\fRentifier, and
\fBTST_TOTAL\fR must be set to the total number of test cases that will be
reported.
.P
The other global variables are available as externs to tests linked with
tst_res.o.  \fBtst_count\fR is the running count of the number of test
results that have been reported so far.  The library initializes it to 0, and
it should not be modified by the test.
The details are described below under the appropriate functions.
.SS Arguments
.RS 5
.TP 10
.I ttype
test result type; one of \fBTPASS, TFAIL, TBROK, TCONF, TWARN\fR, or
\fBTINFO\fR (explained below).
.TP 10
.I fname
pointer to a character string holding the name of a file whose contents will
be printed on a new line following \fItmesg\fR.  If this pointer is NULL, it
is ignored.
.TP 10
.I tmesg, [arg ...]
pointer to a character string containing a message explaining the test
result.  This character string can contain percent-sign conversion
specifications as in \fBprintf\fR(3C) with corresponding \fIarg\fR arguments
following the \fItmesg\fR argument.
.br
\fBNOTE:\fR These routines use static space internally to hold the
expanded message.  The maximum size allowed for an expanded message is
2048 bytes.
.TP 10
.I func
pointer to a function which performs either the cleanup necessary prior to
exiting the test or some function executed at the end of each iteration of a
loop.
.TP 10
.I buf
pointer to a buffer whose contents will be printed in hexadecimal format.
.TP 10
.I size
size of the buffer.
.RE
.SS Result Types
The possible test result types defined in \fBtest.h\fR are as follows:
.RS 5
.TP 10
.B TPASS
The test case produced expected results.
.TP 10
.B TFAIL
The test case produced unexpected results.
.TP 10
.B TBROK
A resource needed to execute the test case was not available (e.g. a
temporary file could not be opened).
.TP 10
.B TCONF
The test case was not appropriate for the current hardware or software
configuration (e.g. MLS was not enabled).
.TP 10
.B TWARN
The testing procedure caused undesirable side effects that did not affect
test results (e.g. a temporary file could not be removed after all test
results were recorded).
.TP 10
.B TINFO
An informative message about the execution of the test that does not
correspond to a test case result and does not indicate a problem.
.RE
.SS Function Descriptions

\fBtst_resm()\fR and \fBtst_resm_hexd()\fR are the basic
result reporting functions. They report 1 or more test case results of the
specified \fIttype\fR.  All result types are valid for these functions.  The
\fBtst_range\fR global variable indicates the number of results that will be
reported for each call to one of these functions.  It is initialized by the
library to 1, but may be set to a value > 1 by the test.  Each call to one of
these functions will result in \fBtst_range\fR test case results being
reported, each with an identical message (\fItmesg\fR).  \fBtst_range\fR is
always reset to 1 by the library before returning to the caller.
.P
\fBtst_brk()\fR and \fBtst_brkm()\fR are used to report results for all test
cases remaining in the test, and then call a cleanup function.  The only
result types that are valid for these functions are: \fBTFAIL, TBROK,
and TCONF\fR.  When called with a \fIttype\fR of \fBTFAIL\fR or
\fBTBROK\fR, one result of the specified \fIttype\fR will be printed,
followed by results of type \fBTBROK\fR for the remaining test cases.  When
called with a \fIttype\fR of \fBTCONF\fR, the specified
\fIttype\fR will be printed for all remaining test cases.  If \fIfunc\fR is
not NULL, \fBtst_brk()\fR and \fBtst_brkm()\fR will call \fIfunc\fR after all
results have been printed.  If the call to \fIfunc\fR returns,
\fBtst_brk()\fR and \fBtst_brkm()\fR will then call \fBtst_exit()\fR.  If
\fIfunc\fR is NULL, \fBtst_brk()\fR and \fBtst_brkm()\fR return to the caller
after all results have been printed.  If \fBtst_brk()\fR is called with a
\fIfname\fR argument, the contents of the file will only be printed for the
first reported result.  \fBtst_brk()\fR takes the \fIfname\fR argument
whereas \fBtst_brkm()\fR does not.
.P
\fBtst_old_flush()\fR is used to print any results pending because of
\fBCONDENSE\fR or \fBNOPASS\fR modes (described below), and flushes the
output stream.
.P
\fBtst_exit()\fR is used to allow tests to exit with a meaningful exit
value.  A bit is set in the exit value for each of the non passing test
case result types (TFAIL, TBROK, and TWARN) encountered by the library.
Thus any bit which is set in the exit value indicates that the
corresponding result flag was used at least once in the test run.
.P
The current bit fields for the result types are as follows:
.RS 5
.TP 10
TPASS
0000	/* .... .... */
.TP 10
TFAIL
0001	/* .... ...1 */
.TP 10
TBROK
0002	/* .... ..1. */
.TP 10
TWARN
0004	/* .... .1.. */
.TP 10
TINFO
0020	/* ...1 .... */
.TP 10
TCONF
0040	/* ..1. .... */
.RE
.P
NOTE: \fBTPASS and TINFO\fR do not have an effect
on the test program exit status.
.P
\fBtst_environ()\fR is used to ensure that results reported by this library
will go to the original stdout, even if the test changes the original stdout
to another file, or closes it.  A test may want to do this in order to
redirect output that normally goes to stdout (e.g. printf() output) to a
file.  \fBtst_environ()\fR returns 0 upon successful completion, and -1 if it
encountered any problems.
.SS Output Modes
Four output display modes are supported by the \fBtst_resm()\fR family of
functions to enhance output readability. The active mode is controlled via
the environment variable \fBTOUTPUT\fR, which must be set prior to the start
of the test in order to have any effect (see \fBksh\fR(1) for information on
environment variables).  The supported modes are as follows:
.RS 5
.TP 15
.B VERBOSE
A test result output line is generated for each test result.  This is the
default mode.
.TP 15
.B CONDENSE
Consecutive, identical PASS, FAIL, BROK, CONF, and RETR test results are
condensed into one output line.  The test case number field contains the range
of results involved.  WARN and INFO output lines are not condensed, but
printed as usual.
.TP 15
.B NOPASS
All PASS, CONF, INFO, and RETR output lines are discarded (i.e. not printed),
and consecutive, identical FAIL and BROK output lines are condensed as in
\fBCONDENSE\fR mode.  WARN output lines are printed as usual.
.TP 15
.B DISCARD
All output lines are discarded.
.RE
.SH EXAMPLES
.nf
#include "test.h"

char *TCID = "tsttcs01"; /* set test case identifier */
int TST_TOTAL = 15;      /* set total number of test results */

main()
{
		.
		.
	/* a successful test result */
	tst_resm(TPASS, "\fIwhat was tested\fR");
		.
		.

	/* break all remaining test results */
	tst_brkm(TBROK, cleanup, "\fIwhat didn't work\fR");
		/* or */
	tst_brk(TBROK, file, cleanup, "\fIwhat didn't work\fR");
		.
		.

	/* exit after all test results have been passed to tst_res */
	tst_exit();
}
.fi
.P
Sample output:
.RS 5
.nf
tsttcs01    1       PASS  :  Able to create MAXUP processes
tsttcs01    2       FAIL  :  Too many processes (MAXUP+1) created
tsttcs01    3       BROK  :  tabinfo(PROCTAB, &tbs) failed; errno = 13: Permission denied
.fi
.SH "SEE ALSO"
tst_setup(1),
printf(3C),
ksh(1).
.SH DIAGNOSTICS
.P
A WARN result message will be printed if any of the following occur:
.RS 5
.P
If an invalid test type is specified.
.P
If \fBtst_count\fR is negative.
.P
If one of the \fBtst_brk[m]()\fR routines is called with a test type
other than \fBTFAIL, TBROK, TCONF\fR.
.P
If there are any problems opening/reading/writing the contents of \fIfname\fR.
.RE
.SH LIMITATIONS
If \fIfname\fR is NULL and \fItmesg\fR is NULL or empty, the result message
will be empty.  This allows a test to not print a message for a result, but
it is not advised.
.SH NOTES
In multithreaded environment, output of \fBtst_resm_hexd()\fR may be interleaved
with messages produced by other threads.
.SH BUGS
.P
The programmer is free to alter the value of \fBtst_count\fR causing possible
test result order problems.