CONS-TEST(1) Cons-Test - Regression Tests for Cons CONS-TEST(1)NAMEcons-test - Run Cons tests
SYNOPSIScons-test [-qw] [-d dir] [-I dir] [-x cons] [test_script ...]
-d dir search for tests in specified dir
-I dir add dir to Perl search path
-q quiet, supress warnings about undefined variables
-w execute the cons script with perl -w flag
-x cons test specified cons script
DESCRIPTION
By default, the `cons-test' script will test the script `cons' or
`cons.pl' in the current directory.
An alternate `cons' script name may be specified via the `-x' flag:
$ cons-test-x cons.NEW
$ cons-test-x /usr/foo/cons.experiment/cons
The `cons-test' script will arrange for each test to use the specified
`cons' script. The `cons' script under test need not have execute per‐
mission set.
The `cons' script under test may be executed with the Perl `-w' flag,
which warns about conditions such as uninitialized variables:
$ cons-test-w
By default, the `cons-test' script executes all the tests it finds in
the following directories:
.
t
/usr/lib/cons-2.2.0/test/t
/usr/lib/cons/test/t
Any file with a `.t' extension is assumed to be a test. The
`cons-test' script can also execute tests with `.pl' or `.sh' exten‐
sions, although they must be explicitly listed on the command line.
By default, the executed tests use the supporting `Test::Cmd' and
`Test::Cmd::Cons' perl modules found under the current directory or
/usr/lib/cons-2.2.0. Additional directories to be searched for these
modules may be specified with `-I' flag.
Each test is executed with the specified `cons' script passed in via
the `CONS' environment variable. The `cons' script will be executed
with any Perl flags specified via the `PERLFLAGS' environment variable.
After all the tests have been executed, the `cons-test' script reports
a summary of the pass/fail score:
cons-test: 'cons' passed all 130 tests.
cons-test: 'cons' passed 128 tests, failed 2:
/usr/lib/cons-2.2.0/test/t/t0003.t
/usr/lib/cons-2.2.0/test/t/t0026.t
The `cons-test' script can be given one or more tests as arguments, in
which case it will only execute the specified tests:
$ perl cons-test t0007.t t0023.t
cons-test: perl -w /usr/lib/cons-2.2.0/test/t/t0007.t
PASSED
cons-test: perl -w /usr/lib/cons-2.2.0/test/t/t0023.t
PASSED
cons-test: 'cons' passed all 2 tests.
$
The `cons-test' script may also be given environment variable assign‐
ments as arguments. These will be evaluated in order with the test
arguments. This allows, for example, executing the same test(s) with
different compilers in the same `cons-test' invocation:
$ perl cons-test CC=gcc t/t0001.t CC=no_compiler t/t0001.t
cons-test: perl -w /usr/lib/cons-2.2.0/test/t/t0001.t
PASSED
cons-test: perl -w /usr/lib/cons-2.2.0/test/t/t0001.t
FAILED test #1 of cons [single-module Program]:
no_compiler -c foo.c -o foo.o
cons: failed to execute "no_compiler" (No such file or directory). Is this an executable on path "/bin:/usr/bin"?
cons: *** [foo.o] Error 2
cons: errors constructing foo.o
FAILED test #1 of cons [single-module Program]
cons-test: 'cons' passed 1 tests, failed 1:
/usr/lib/cons-2.2.0/test/t/t0001.t
$
By default, the `cons-test' script expects that the environment vari‐
ables `CC', `AR', and `RANLIB' are set, and will generate warnings if
they are not. A `-q' option may be used to suppress these warnings.
TESTS
Tests conform to requirements of the Aegis project change supervisor,
which integrates creation and execution of regression tests into the
software development process. Information about Aegis can be found at:
http://www.tip.net.au/~millerp/aegis.html
Each test is a completely self-contained Perl script, and may be
directly executed by explicitly passing it to perl (`-w' flag pre‐
ferred):
$ perl -w t/t0001.t
The cryptic names are by Aegis convention only, and could have been
named to reflect the functionality being tested. The numbering has
been preserved to try to give order to the tests: Simpler, underlying
functionality is tested before more complicated features that rely on
functionality tested by prior tests.
Each test creates a temporary work directory under `$TMPDIR' (under
/tmp by default) and populates it with files from in-line here docu‐
ments.
Each test checks the return value from every subroutine it calls and
ever command it executes, expecting a successful return value or exit
code from each. When it's important, each test compares actual command
output against expected output. Note that, in the usual case, this is
actually output of the executables generated by Cons, not the "cc" com‐
mand lines reported as the actions Cons executes to build the test exe‐
cutables. There are some exceptions, tests which do examine the build
actions; these are noted in the `Tests.txt' file and in the commentary
at the top of each test.
By default, the tests rely on having normal C compilation, linking and
archiving tools available through the environment's `PATH', and expect
that `printf()' is available through whatever library is linked into a
program via the default Cons build environment. These tests use the
following environment variables for specification of alternate paths to
various utilities:
AR (default: 'ar') library archiver
CC (default: 'cc') C compiler
RANLIB (default: 'ranlib') ranlib
As described previously, the `cons-test' script accepts environment
variable assignments in its command-line arguments. This may be used,
for example, to specify different C compilers for different test invo‐
cations:
$ perl cons-test CC=gcc t/t0001.t CC=cc t/t0001.t
Each test reports one of three results:
PASSED
The Cons script being tested passed this test.
FAILED test of [functionality]
The Cons script being tested failed this test.
NO RESULT for test of [functionality]
The Cons script could not be tested due to some non-Cons problem
(e.g., unable to create temporary directory or file).
Each test removes its temporary work directory upon completion.
ENVIRONMENT VARIABLES
For post facto debugging, the work directory can be preserved (and its
name reported) by setting environment variables:
PRESERVE
Don't remove the work directory.
PRESERVE_PASS
Don't remove the work directory if the test passes.
PRESERVE_FAIL
Don't remove the work directory if the test fails.
PRESERVE_NO_RESULT
Don't remove the work directory if there is no valid test result.
FILES
/usr/lib/cons-2.2.0/test/Test/Cmd/Cons.pm
Perl module for testing Cons.
/usr/lib/cons-2.2.0/test/Tests.txt
Summary descriptions of all tests.
/usr/lib/cons-2.2.0/test/t/
Subdirectory containing the default set of tests.
AUTHOR
Steven Knight <knight@baldmt.com>
REPORTING BUGS
Report bugs to <bug-cons@gnu.org>.
COPYRIGHT
Copyright 2000 Free Software Foundation, Inc. This is free software;
see the source for copying conditions. There is NO warranty; not even
for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
the cons manpage
3rd Berkeley Distribution 2.2.0 CONS-TEST(1)
