Provided by: libtest-cmd-perl_1.05-9_all 
NAME
Test::Cmd - Perl module for portable testing of commands and scripts
SYNOPSIS
use Test::Cmd;
$test = Test::Cmd->new(prog => 'program_or_script_to_test',
interpreter => 'script_interpreter',
string => 'identifier_string',
workdir => '',
subdir => 'dir',
match_sub => $code_ref,
verbose => 1);
$test->verbose(1);
$test->prog('program_or_script_to_test');
$test->basename(@suffixlist);
$test->interpreter('script_interpreter');
$test->string('identifier string');
$test->workdir('prefix');
$test->workpath('subdir', 'file');
$test->subdir('subdir', ...);
$test->subdir(['sub', 'dir'], ...);
$test->write('file', <<'EOF');
contents of file
EOF
$test->write(['subdir', 'file'], <<'EOF');
contents of file
EOF
$test->read(\$contents, 'file');
$test->read(\@lines, 'file');
$test->read(\$contents, ['subdir', 'file']);
$test->read(\@lines, ['subdir', 'file']);
$test->writable('dir');
$test->writable('dir', $rwflag);
$test->writable('dir', $rwflag, \%errors);
$test->preserve(condition, ...);
$test->cleanup(condition);
$test->run(prog => 'program_or_script_to_test',
interpreter => 'script_interpreter',
chdir => 'dir', args => 'arguments', stdin => <<'EOF');
input to program
EOF
$test->pass(condition);
$test->pass(condition, \&func);
$test->fail(condition);
$test->fail(condition, \&func);
$test->fail(condition, \&func, $caller);
$test->no_result(condition);
$test->no_result(condition, \&func);
$test->no_result(condition, \&func, $caller);
$test->stdout;
$test->stdout($run_number);
$test->stderr;
$test->stderr($run_number);
$test->match(\@lines, \@matches);
$test->match($lines, $matches);
$test->match_exact(\@lines, \@matches);
$test->match_exact($lines, $matches);
$test->match_regex(\@lines, \@regexes);
$test->match_regex($lines, $regexes);
$test->diff_exact(\@lines, \@matches, \@output);
$test->diff_exact($lines, $matches, \@output);
$test->diff_regex(\@lines, \@regexes, \@output);
$test->diff_regex($lines, $regexes, \@output);
sub func {
my ($self, $lines, $matches) = @_;
# code to match $lines and $matches
}
$test->match_sub(\&func);
$test->match_sub(sub { code to match $_[1] and $_[2] });
$test->here;
DESCRIPTION
The "Test::Cmd" module provides a low-level framework for portable automated testing of executable
commands and scripts (in any language, not just Perl), especially commands and scripts that interact with
the file system.
The "Test::Cmd" module makes no assumptions about what constitutes a successful or failed test.
Attempting to read a file that doesn't exist, for example, may or may not be an error, depending on the
software being tested.
Consequently, no "Test::Cmd" methods (including the "new()" method) exit, die or throw any other sorts of
exceptions (but they all do return useful error indications). Exceptions or other error status should be
handled by a higher layer: a subclass of "Test::Cmd", or another testing framework such as the "Test" or
"Test::Simple" Perl modules, or by the test itself.
(That said, see the "Test::Cmd::Common" module if you want a similar module that provides exception
handling, either to use directly in your own tests, or as an example of how to use "Test::Cmd".)
In addition to running tests and evaluating conditions, the "Test::Cmd" module manages and cleans up one
or more temporary workspace directories, and provides methods for creating files and directories in those
workspace directories from in-line data (that is, here-documents), allowing tests to be completely self-
contained. When used in conjunction with another testing framework, the "Test::Cmd" module can function
as a fixture (common startup code for multiple tests) for simple management of command execution and
temporary workspaces.
The "Test::Cmd" module inherits "File::Spec" methods ("file_name_is_absolute()", "catfile()", etc.) to
support writing tests portably across a variety of operating and file systems.
A "Test::Cmd" environment object is created via the usual invocation:
$test = Test::Cmd->new();
Arguments to the "Test::Cmd::new" method are keyword-value pairs that may be used to initialize the
object, typically by invoking the same-named method as the keyword.
TESTING FRAMEWORKS
As mentioned, because the "Test::Cmd" module makes no assumptions about what constitutes success or
failure of a test, it can be used to provide temporary workspaces, other file system interaction, or
command execution for a variety of testing frameworks. This section describes how to use the "Test::Cmd"
with several different higher-layer testing frameworks.
Note that you should not intermix multiple testing frameworks in a single testing script.
"Test::Harness"
The "Test::Cmd" module may be used in tests that print results in a format suitable for the standard Perl
"Test::Harness" module:
use Test::Cmd;
print "1..5\n";
$test = Test::Cmd->new(prog => 'test_program', workdir => '');
if ($test) { print "ok 1\n"; } else { print "not ok 1\n"; }
$input = <<_EOF;
test_program should process this input
and exit successfully (status 0).
_EOF_
$wrote_file = $test->write('input_file', $input);
if ($wrote_file) { print "ok 2\n"; } else { print "not ok 2\n"; }
$test->run(args => '-x input_file');
if ($? == 0) { print "ok 3\n"; } else { print "not ok 3\n"; }
$wrote_file = $test->write('input_file', $input);
if ($wrote_file) { print "ok 4\n"; } else { print "not ok 4\n"; }
$test->run(args => '-y input_file');
if ($? == 0) { print "ok 5\n"; } else { print "not ok 5\n"; }
Several other Perl modules simplify the use of "Test::Harness" by eliminating the need to hand-code the
"print" statements and test numbers. The "Test" module, the "Test::Simple" module, and the "Test::More"
module all export an "ok()" subroutine to test conditions. Here is how the above example would look
rewritten to use "Test::Simple":
use Test::Simple tests => 5;
use Test::Cmd;
$test = Test::Cmd->new(prog => 'test_program', workdir => '');
ok($test, "creating Test::Cmd object");
$input = <<_EOF;
test_program should process this input
and exit successfully (status 0).
_EOF_
$wrote_file = $test->write('input_file', $input);
ok($wrote_file, "writing input_file");
$test->run(args => '-x input_file');
ok($? == 0, "executing test_program -x input_file");
$wrote_file = $test->write('input_file', $input);
ok($wrote_file, "writing input_file");
$test->run(args => '-y input_file');
ok($? == 0, "executing test_program -y input_file");
"Test::Unit"
The Perl "Test::Unit" package provides a procedural testing interface modeled after a testing framework
widely used in the eXtreme Programming development methodology. The "Test::Cmd" module can function as
part of a "Test::Unit" fixture that can set up workspaces as needed for a set of tests. This avoids
having to repeat code to re-initialize an input file multiple times:
use Test::Unit;
use Test::Cmd;
my $test;
$input = <<'EOF';
test_program should process this input
and exit successfully (status 0).
EOF
sub set_up {
$test = Test::Cmd->new(prog => 'test_program', workdir => '');
$test->write('input_file', $input);
}
sub test_x {
my $result = $test->run(args => '-x input_file');
assert($result == 0, "failed test_x\n");
}
sub test_y {
my $result = $test->run(args => '-y input_file');
assert($result == 0, "failed test_y\n");
}
create_suite();
run_suite;
Note that, because the "Test::Cmd" module takes care of cleaning up temporary workspaces on exit, there
is no need to remove explicitly the workspace in a "tear_down" subroutine. (There may, of course, be
other things in the test that need a "tear_down" subroutine.)
Aegis
Alternatively, the "Test::Cmd" module provides "pass()", "fail()", and "no_result()" methods that can be
used to provide an appropriate exit status and simple printed indication for a test. These methods
terminate the test immediately, reporting "PASSED", "FAILED", or "NO RESULT" respectively, and exiting
with status 0 (success), 1 or 2 respectively.
The separate "fail()" and "no_result()" methods allow for a distinction between an actual failed test and
a test that could not be properly evaluated because of an external condition (such as a full file system
or incorrect permissions).
The exit status values happen to match the requirements of the Aegis change management system, and the
printed strings are based on existing Aegis conventions. They are not really Aegis-specific, however,
and provide a simple, useful starting point if you don't already have another testing framework:
use Test::Cmd;
$test = Test::Cmd->new(prog => 'test_program', workdir => '');
Test::Cmd->no_result(! $test);
$input = <<EOF;
test_program should process this input
and exit successfully (status 0).
EOF
$wrote_file = $test->write('input_file', $input);
$test->no_result(! $wrote_file);
$test->run(args => '-x input_file');
$test->fail($? != 0);
$wrote_file = $test->write('input_file', $input);
$test->no_result(! $wrote_file);
$test->run(args => '-y input_file');
$test->fail($? != 0);
$test->pass;
Note that the separate "Test::Cmd::Common" wrapper module can simplify the above example even further by
taking care of common exception handling cases within the testing object itself.
use Test::Cmd::Common;
$test = Test::Cmd::Common->new(prog => 'test_program', workdir => '');
$input = <<EOF;
test_program should process this input
and exit successfully (status 0).
EOF
$wrote_file = $test->write('input_file', $input);
$test->run(args => '-x input_file');
$wrote_file = $test->write('input_file', $input);
$test->run(args => '-y input_file');
$test->pass;
See the "Test::Cmd::Common" module for details.
METHODS
Methods supported by the "Test::Cmd" module include:
"new"
Create a new "Test::Cmd" environment. Arguments with which to initialize the environment are passed
in as keyword-value pairs. Fails if a specified temporary working directory or subdirectory cannot
be created. Does NOT die or exit on failure, but returns FALSE if the test environment object cannot
be created.
"verbose"
Sets the verbose level for the environment object to the specified value.
"prog"
Specifies the executable program or script to be tested. Returns the absolute path name of the
current program or script.
"basename"
Returns the basename of the current program or script. Any specified arguments are a list of file
suffixes that may be stripped from the basename.
"interpreter"
Specifies the program to be used to interpret "prog" as a script. Returns the current value of
"interpreter".
"string"
Specifies an identifier string for the functionality being tested to be printed on failure or no
result.
"workdir"
When an argument is specified, creates a temporary working directory with the specified name. If the
argument is a NULL string (''), the directory is named "testcmd" by default, followed by the unique
ID of the executing process.
Returns the absolute pathname to the temporary working directory, or FALSE if the directory could not
be created.
"workpath"
Returns the absolute path name to a subdirectory or file under the current temporary working
directory by concatenating the temporary working directory name with the specified arguments.
"subdir"
Creates new subdirectories under the temporary working dir, one for each argument. An argument may
be an array reference, in which case the array elements are concatenated together using the
"File::Spec-&"catfile> method. Subdirectories multiple levels deep must be created via a separate
argument for each level:
$test->subdir('sub', ['sub', 'dir'], [qw(sub dir ectory)]);
Returns the number of subdirectories actually created.
"write"
Writes the specified text (second argument) to the specified file name (first argument). The file
name may be an array reference, in which case all the array elements except the last are subdirectory
names to be concatenated together. The file is created under the temporary working directory. Any
subdirectories in the path must already exist.
"read"
Reads the contents of the specified file name (second argument) into the scalar or array referred to
by the first argument. The file name may be an array reference, in which case all the array elements
except the last are subdirectory names to be concatenated together. The file is assumed to be under
the temporary working directory unless it is an absolute path name.
Returns TRUE on successfully opening and reading the file, FALSE otherwise.
"writable"
Makes every file and directory within the specified directory tree writable ("rwflag" == TRUE) or not
writable ("rwflag" == FALSE). The default is to make the directory tree writable. Optionally fills
in the supplied hash reference with a hash of path names that could not have their permissions set
appropriately, with the reason why each could not be set.
"preserve"
Arranges for the temporary working directories for the specified "Test::Cmd" environment to be
preserved for one or more conditions. If no conditions are specified, arranges for the temporary
working directories to be preserved for all conditions.
"cleanup"
Removes any temporary working directories for the specified "Test::Cmd" environment. If the
environment variable "PRESERVE" was set when the "Test::Cmd" module was loaded, temporary working
directories are not removed. If any of the environment variables "PRESERVE_PASS", "PRESERVE_FAIL",
or "PRESERVE_NO_RESULT" were set when the "Test::Cmd" module was loaded, then temporary working
directories are not removed if the test passed, failed, or had no result, respectively. Temporary
working directories are also preserved for conditions specified via the "preserve" method.
Typically, this method is not called directly, but is used when the script exits to clean up
temporary working directories as appropriate for the exit status.
"run"
Runs a test of the program or script for the test environment. Standard output and error output are
saved for future retrieval via the "stdout" and "stderr" methods.
Arguments are supplied as keyword-value pairs:
"args"
Specifies the command-line arguments to be supplied to the program or script under test for this
run:
$test->run(args => 'arg1 arg2');
"chdir"
Changes directory to the path specified as the value argument:
$test->run(chdir => 'xyzzy');
If the specified path is not an absolute path name (begins with '/' on Unix systems), then the
subdirectory is relative to the temporary working directory for the environment
("$test-&"workdir>). Note that, by default, the "Test::Cmd" module does NOT chdir to the
temporary working directory, so to execute the test under the temporary working directory, you
must specify an explicit "chdir" to the current directory:
$test->run(chdir => '.'); # Unix-specific
$test->run(chdir => $test->curdir); # portable
"interpreter"
Specifies the program to be used to interpret "prog" as a script, for this run only. This does
not change the "$test-&"interpreter> value of the test environment.
"prog"
Specifies the executable program or script to be run, for this run only. This does not change
the "$test-&"prog> value of the test environment.
"stdin"
Pipes the specified value (string or array ref) to the program or script under test for this run:
$test->run(stdin => <<_EOF_);
input to the program under test
_EOF_
Returns the exit status of the program or script.
"pass"
Exits the test successfully. Reports "PASSED" on the error output and exits with a status of 0. If
a condition is supplied, only exits the test if the condition evaluates TRUE. If a function
reference is supplied, executes the function before reporting and exiting.
"fail"
Exits the test unsuccessfully. Reports "FAILED test of {string} at line {line} of {file}." on the
error output and exits with a status of 1. If a condition is supplied, only exits the test if the
condition evaluates TRUE. If a function reference is supplied, executes the function before
reporting and exiting. If a caller level is supplied, prints a simple calling trace N levels deep as
part of reporting the failure.
"no_result"
Exits the test with an indeterminate result (the test could not be performed due to external
conditions such as, for example, a full file system). Reports "NO RESULT for test of {string} at
line {line} of {file}." on the error output and exits with a status of 2. If a condition is
supplied, only exits the test if the condition evaluates TRUE. If a function reference is supplied,
executes the function before reporting and exiting. If a caller level is supplied, prints a simple
calling trace N levels deep as part of reporting the failure.
"stdout"
Returns the standard output from the specified run number. If there is no specified run number, then
returns the standard output of the last run. Returns the standard output as either a scalar or an
array of output lines, as appropriate for the calling context. Returns "undef" if there has been no
test run.
"stderr"
Returns the error output from the specified run number. If there is no specified run number, then
returns the error output of the last run. Returns the error output as either a scalar or an array of
output lines, as apporpriate for the calling context. Returns "undef" if there has been no test run.
"match"
Matches one or more input lines against an equal number of expected lines using the currently-
registered line-matching function. The default line-matching function is the "match_regex" method,
which means that the default is to match lines against regular expressions.
"match_exact"
Compares two arrays of lines for exact matches. The arguments are passed in as either scalars, in
which case each is split on newline boundaries, or as array references. An unequal number of lines
in the two arrays fails immediately and returns FALSE before any comparisons are performed.
Returns TRUE if each line matched its corresponding line in the other array, FALSE otherwise.
"match_regex"
Matches one or more input lines against an equal number of regular expressions. The arguments are
passed in as either scalars, in which case each is split on newline boundaries, or as array
references. Trailing newlines are stripped from each line and regular expression. An unequal number
of lines and regular expressions fails immediately and returns FALSE before any comparisons are
performed. Comparison is performed for each entire line, that is, with each regular expression
anchored at both the start of line (^) and end of line ($).
Returns TRUE if each line matched each regular expression, FALSE otherwise.
"diff_exact"
Diffs two arrays of lines in a manner similar to the UNIX diff(1) utility.
If the "Algorithm::DiffOld" package is installed on the local system, output describing the
differences between the input lines and the matching lines, in diff(1) format, is saved to the
$output array reference. In the diff output, the expected output lines are considered the "old"
(left-hand) file, and the actual output is considered the "new" (right-hand) file.
If the "Algorithm::DiffOld" package is not installed on the local system, the Expected and Actual
contents are saved as-is to the $output array reference.
The "lines" and "matches" arguments are passed in as either scalars, in which case each is split on
newline boundaries, or as array references. Trailing newlines are stripped from each line and
regular expression.
Returns TRUE if each line matched its corresponding line in the expected matches, FALSE otherwise, in
order to conform to the conventions of the "match" method.
Typical invocation:
if (! $test->diff_exact($test->stdout,
\@expected_lines,
\@diff)) {
print @diff;
}
"diff_regex"
Diffs one or more input lines against one or more regular expressions in a manner similar to the UNIX
diff(1) utility.
If the "Algorithm::DiffOld" package is installed on the local system, output describing the
differences between the input lines and the matching lines, in diff(1) format, is saved to the
$output array reference. In the diff output, the expected output lines are considered the "old"
(left-hand) file, and the actual output is considered the "new" (right-hand) file.
If the "Algorithm::DiffOld" package is not installed on the local system, the Expected and Actual
contents are saved as-is to the $output array reference.
The "lines" and "regexes" arguments are passed in as either scalars, in which case each is split on
newline boundaries, or as array references. Trailing newlines are stripped from each line and
regular expression. Comparison is performed for each entire line, that is, with each regular
expression anchored at both the start of line (^) and end of line ($).
Returns TRUE if each line matched each regular expression, FALSE otherwise, in order to conform to
the conventions of the "match" method.
Typical invocation:
if (! $test->diff_regex($test->stdout,
\@expected_lines,
\@diff)) {
print @diff;
}
"match_sub"
Registers the specified code reference as the line-matching function to be called by the "match"
method. This can be a user-supplied subroutine, or the "match_exact", "match_regex", "diff_exact",
or "diff_regex" methods supplied by the "Test::Cmd" module:
$test->match_sub(\&Test::Cmd::match_exact);
$test->match_sub(\&Test::Cmd::match_regex);
$test->match_sub(\&Test::Cmd::diff_exact);
$test->match_sub(\&Test::Cmd::diff_regex);
The "match_exact", "match_regex", "diff_exact" and "diff_regex" subroutine names are exportable from
the "Test::Cmd" module, and may be specified at object initialization:
use Test::Cmd qw(match_exact match_regex diff_exact diff_regex);
$test_exact = Test::Cmd->new(match_sub => \&match_exact);
$test_regex = Test::Cmd->new(match_sub => \&match_regex);
$test_exact = Test::Cmd->new(match_sub => \&diff_exact);
$test_regex = Test::Cmd->new(match_sub => \&diff_regex);
"here"
Returns the absolute path name of the current working directory. (This is essentially the same as
the "Cwd::cwd" method, except that the "Test::Cmd::here" method preserves the directory separators
exactly as returned by the underlying operating-system-dependent method. The "Cwd::cwd" method
canonicalizes all directory separators to '/', which makes for consistent path name representations
within Perl, but may mess up another program or script to which you try to pass the path name.)
ENVIRONMENT
Several environment variables affect the default values in a newly created "Test::Cmd" environment
object. These environment variables must be set when the module is loaded, not when the object is
created.
"PRESERVE"
If set to a true value, all temporary working directories will be preserved on exit, regardless of
success or failure of the test. The full path names of all temporary working directories will be
reported on error output.
"PRESERVE_FAIL"
If set to a true value, all temporary working directories will be preserved on exit from a failed
test. The full path names of all temporary working directories will be reported on error output.
"PRESERVE_NO_RESULT"
If set to a true value, all temporary working directories will be preserved on exit from a test for
which there is no result. The full path names of all temporary working directories will be reported
on error output.
"PRESERVE_PASS"
If set to a true value, all temporary working directories will be preserved on exit from a successful
test. The full path names of all temporary working directories will be reported on error output.
"VERBOSE"
When set to a true value, enables verbose reporting of various internal things (path names, exact
command line being executed, etc.).
PORTABLE TESTS
Although the "Test::Cmd" module is intended to make it easier to write portable tests for portable
utilities that interact with file systems, it is still very easy to write non-portable tests if you're
not careful.
The best and most comprehensive set of portability guidelines is the standard "Writing portable Perl"
document at:
http://www.perl.com/pub/doc/manual/html/pod/perlport.html
To reiterate one important point from the "WpP" document: Not all Perl programs have to be portable. If
the program or script you're testing is UNIX-specific, you can (and should) use the "Test::Cmd" module to
write UNIX-specific tests.
That having been said, here are some hints that may help keep your tests portable, if that's a
requirement.
Use the "Test::Cmd-&"here> method for current directory path.
The normal Perl way to fetch the current working directory is to use the "Cwd::cwd" method.
Unfortunately, the "Cwd::cwd" method canonicalizes the path name it returns, changing the native
directory separators into the forward slashes favored by Perl and UNIX. For most Perl scripts, this
makes a great deal of sense and keeps code uncluttered.
Passing in a file name that has had its directory separators altered, however, may confuse the
command or script under test, or make it difficult to compare output from the command or script with
an expected result. The "Test::Cmd::here" method returns the absolute path name of the current
working directory, like "Cwd::cwd", but does not manipulate the returned path in any way.
Use "File::Spec" methods for manipulating path names.
The "File::Spec" module provides a system-independent interface for manipulating path names. Because
the "Test::Cmd" class is a sub-class of the "File::Spec" class, you can use these methods directly as
follows:
if (! Test::Cmd->file_name_is_absolute($prog)) {
my $prog = Test::Cmd->catfile(Test::Cmd->here, $prog);
}
For details about the available methods and their use, see the documentation for the "File::Spec"
module and its sub-modules, especially the "File::Spec::Unix" modules.
Use "Config" for file-name suffixes, where possible.
The standard "Config" module provides values that reflect the file-name suffixes on the system for
which the Perl executable was built. This provides convenient portability for situations where a
file name may have different extensions on different systems:
$foo_exe = "foo$Config{_exe}";
ok(-f $foo_exe);
(Unfortunately, there is no existing $Config value that specifies the suffix for a directly-
executable Perl script.)
Avoid generating executable programs or scripts.
How to make a file or script executable varies widely from system to system, some systems using file
name extensions to indicate executability, others using a file permission bit. The differences are
complicated to accommodate in a portable test script. The easiest way to deal with this complexity
is to avoid it if you can.
If your test somehow requires executing a script that you generate from the test itself, the best way
is to generate the script in Perl and then explicitly feed it to the Perl executable on the local
system. To be maximally portable, use the $^X variable instead of hard-coding "perl" into the string
you execute:
$line = "This is output from the generated perl script.";
$test->write('script', <<EOF);
print STDOUT "$line\\n";
EOF
$output = `$^X script`;
ok($output eq "$line\n");
This completely avoids having to make the "script" file itself executable. (Since you're writing
your test in Perl, it's safe to assume that Perl itself is executable.)
If you must generate a directly-executable script, then use the $Config{'startperl'} variable at the
start of the script to generate the appropriate magic that will execute it as a Perl script:
use Config;
$line = "This is output from the generated perl script.";
$test->write('script', <<EOF);
$Config{'startperl'};
print STDOUT "$line\\n";
EOF
chdir($test->workdir);
chmod(0755, 'script'); # POSIX-SPECIFIC
$output = `script`;
ok($output eq "$line\n");
Addtional hints on writing portable tests are welcome.
SEE ALSO
perl(1), Algorithm::DiffOld(3), File::Find(3), File::Spec(3), Test(3), Test::Cmd::Common(3),
Test::Harness(3), Test::More(3), Test::Simple(3), Test::Unit(3).
A rudimentary page for the "Test::Cmd" module is available at:
http://www.baldmt.com/Test-Cmd/
The most involved example of using the "Test::Cmd" package to test a real-world application is the
"cons-test" testing suite for the Cons software construction utility. The suite uses a sub-class of
"Test::Cmd::Common" (which in turn is a sub-class of "Test::Cmd") to provide common, application-specific
infrastructure across a large number of end-to-end application tests. The suite, and other information
about Cons, is available at:
http://www.dsmit.com/cons
AUTHORS
Steven Knight, knight@baldmt.com
COPYRIGHT
Copyright 1999-2001 Steven Knight. All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
ACKNOWLEDGEMENTS
Thanks to Greg Spencer for the inspiration to create this package and the initial draft of its
implementation as a specific testing package for the Cons software construction utility. Information
about Cons is available at:
http://www.dsmit.com/cons/
The general idea of managing temporary working directories in this way, as well as the test reporting of
the "pass", "fail" and "no_result" methods, come from the testing framework invented by Peter Miller for
his Aegis project change supervisor. Aegis is an excellent bit of work which integrates creation and
execution of regression tests into the software development process. Information about Aegis is
available at:
http://www.tip.net.au/~millerp/aegis.html
Thanks to Michael Schwern for all of the thoughtful work he's put into Perl's standard testing
methodology, including the "Test::Simple" and "Test::More" modules, and enhancement and maintenance of
the "Test" and "Test::Harness" modules. Thanks also to Christian Lemburg for the impressively complete
"Test::Unit" framework of modules. Ideas from both have helped keep "Test::Cmd" flexible enough to be
useful in multiple testing frameworks.
perl v5.18.1 2014-01-12 Cmd(3pm)