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tests: add C TAP harness

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Simon Arlott 2017-07-25 21:02:45 +01:00
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.gitignore vendored
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tags
Makefile
*~
*.a
*.o
*.so
*.lo
@ -55,6 +56,7 @@ ircd/version.c
ircd/version.c.last
ssld/ssld
wsockd/wsockd
tests/runtests
testsuite/ircd.pid.*
tools/charybdis-mkpasswd
tools/charybdis-mkfingerprint

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Makefile.am
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@ -12,6 +12,7 @@ SUBDIRS += ircd \
wsockd \
authd \
bandb \
tests \
tools \
modules \
extensions \

1
configure.ac
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@ -660,6 +660,7 @@ AC_CONFIG_FILES( \
extensions/Makefile \
ircd/Makefile \
modules/Makefile \
tests/Makefile \
tools/Makefile \
tools/genssl \
doc/Makefile \

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check_PROGRAMS = runtests
AM_CFLAGS=$(WARNFLAGS)
AM_CPPFLAGS = $(DEFAULT_INCLUDES) -I../librb/include -I..
AM_LDFLAGS = -no-install
LDADD = tap/libtap.a ../librb/src/librb.la ../ircd/libircd.la
# Override -rpath or programs will be linked to installed libraries
libdir=$(abs_top_builddir)
runtests_CPPFLAGS = -DC_TAP_SOURCE='"$(abs_top_srcdir)/tests"' \
-DC_TAP_BUILD='"$(abs_top_builddir)/tests"'
check_LIBRARIES = tap/libtap.a
tap_libtap_a_SOURCES = tap/basic.c tap/basic.h \
tap/float.c tap/float.h tap/macros.h
check-local: $(check_PROGRAMS)
./runtests -l $(abs_top_srcdir)/tests/TESTS

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Writing TAP Tests
Introduction
This is a guide for users of the C TAP Harness package or similar
TAP-based test harnesses explaining how to write tests. If your
package uses C TAP Harness as the test suite driver, you may want to
copy this document to an appropriate file name in your test suite as
documentation for contributors.
About TAP
TAP is the Test Anything Protocol, a protocol for communication
between test cases and a test harness. This is the protocol used by
Perl for its internal test suite and for nearly all Perl modules,
since it's the format used by the build tools for Perl modules to run
tests and report their results.
A TAP-based test suite works with a somewhat different set of
assumptions than an xUnit test suite. In TAP, each test case is a
separate program. That program, when run, must produce output in the
following format:
1..4
ok 1 - the first test
ok 2
# a diagnostic, ignored by the harness
not ok 3 - a failing test
ok 4 # skip a skipped test
The output should all go to standard output. The first line specifies
the number of tests to be run, and then each test produces output that
looks like either "ok <n>" or "not ok <n>" depending on whether the
test succeeded or failed. Additional information about the test can
be provided after the "ok <n>" or "not ok <n>", but is optional.
Additional diagnostics and information can be provided in lines
beginning with a "#".
Processing directives are supported after the "ok <n>" or "not ok <n>"
and start with a "#". The main one of interest is "# skip" which says
that the test was skipped rather than successful and optionally gives
the reason. Also supported is "# todo", which normally annotates a
failing test and indicates that test is expected to fail, optionally
providing a reason for why.
There are three more special cases. First, the initial line stating
the number of tests to run, called the plan, may appear at the end of
the output instead of the beginning. This can be useful if the number
of tests to run is not known in advance. Second, a plan in the form:
1..0 # skip entire test case skipped
can be given instead, which indicates that this entire test case has
been skipped (generally because it depends on facilities or optional
configuration which is not present). Finally, if the test case
encounters a fatal error, it should print the text:
Bail out!
on standard output, optionally followed by an error message, and then
exit. This tells the harness that the test aborted unexpectedly.
The exit status of a successful test case should always be 0. The
harness will report the test as "dubious" if all the tests appeared to
succeed but it exited with a non-zero status.
Writing TAP Tests
Environment
One of the special features of C TAP Harness is the environment that
it sets up for your test cases. If your test program is called under
the runtests driver, the environment variables C_TAP_SOURCE and
C_TAP_BUILD will be set to the top of the test directory in the source
tree and the top of the build tree, respectively. You can use those
environment variables to locate additional test data, programs and
libraries built as part of your software build, and other supporting
information needed by tests.
The C and shell TAP libraries support a test_file_path() function,
which looks for a file under the build tree and then under the source
tree, using the C_TAP_BUILD and C_TAP_SOURCE environment variables,
and return the full path to the file. This can be used to locate
supporting data files. They also support a test_tmpdir() function
that returns a directory that can be used for temporary files during
tests.
Perl
Since TAP is the native test framework for Perl, writing TAP tests in
Perl is very easy and extremely well-supported. If you've never
written tests in Perl before, start by reading the documentation for
Test::Tutorial and Test::Simple, which walks you through the basics,
including the TAP output syntax. Then, the best Perl module to use
for serious testing is Test::More, which provides a lot of additional
functions over Test::Simple including support for skipping tests,
bailing out, and not planning tests in advance. See the documentation
of Test::More for all the details and lots of examples.
C TAP Harness can run Perl test scripts directly and interpret the
results correctly, and similarly the Perl Test::Harness module and
prove command can run TAP tests written in other languages using, for
example, the TAP library that comes with C TAP Harness. You can, if
you wish, use the library that comes with C TAP Harness but use prove
instead of runtests for running the test suite.
C
C TAP Harness provides a basic TAP library that takes away most of the
pain of writing TAP test cases in C. A C test case should start with
a call to plan(), passing in the number of tests to run. Then, each
test should use is_int(), is_string(), is_double(), or is_hex() as
appropriate to compare expected and seen values, or ok() to do a
simpler boolean test. The is_*() functions take expected and seen
values and then a printf-style format string explaining the test
(which may be NULL). ok() takes a boolean and then the printf-style
string.
Here's a complete example test program that uses the C TAP library:
#include <stddef.h>
#include <tap/basic.h>
int
main(void)
{
plan(4);
ok(1, "the first test");
is_int(42, 42, NULL);
diag("a diagnostic, ignored by the harness");
ok(0, "a failing test");
skip("a skipped test");
return 0;
}
This test program produces the output shown above in the section on
TAP and demonstrates most of the functions. The other functions of
interest are sysdiag() (like diag() but adds strerror() results),
bail() and sysbail() for fatal errors, skip_block() to skip a whole
block of tests, and skip_all() which is called instead of plan() to
skip an entire test case.
The C TAP library also provides plan_lazy(), which can be called
instead of plan(). If plan_lazy() is called, the library will keep
track of how many test results are reported and will print out the
plan at the end of execution of the program. This should normally be
avoided since the test may appear to be successful even if it exits
prematurely, but it can make writing tests easier in some
circumstances.
Complete API documentation for the basic C TAP library that comes with
C TAP Harness is available at:
<https://www.eyrie.org/~eagle/software/c-tap-harness/>
It's common to need additional test functions and utility functions
for your C tests, particularly if you have to set up and tear down a
test environment for your test programs, and it's useful to have them
all in the libtap library so that you only have to link your test
programs with one library. Rather than editing tap/basic.c and
tap/basic.h to add those additional functions, add additional *.c and
*.h files into the tap directory with the function implementations and
prototypes, and then add those additional objects to the library.
That way, you can update tap/basic.c and tap/basic.h from subsequent
releases of C TAP Harness without having to merge changes with your
own code.
Libraries of additional useful TAP test functions are available in
rra-c-util at:
<https://www.eyrie.org/~eagle/software/rra-c-util/>
Some of the code there is particularly useful when testing programs
that require Kerberos keys.
If you implement new test functions that compare an expected and seen
value, it's best to name them is_<something> and take the expected
value, the seen value, and then a printf-style format string and
possible arguments to match the calling convention of the functions
provided by C TAP Harness.
Shell
C TAP Harness provides a library of shell functions to make it easier
to write TAP tests in shell. That library includes much of the same
functionality as the C TAP library, but takes its parameters in a
somewhat different order to make better use of shell features.
The libtap.sh file should be installed in a directory named tap in
your test suite area. It can then be loaded by tests written in shell
using the environment set up by runtests with:
. "$C_TAP_SOURCE"/tap/libtap.sh
Here is a complete test case written in shell which produces the same
output as the TAP sample above:
#!/bin/sh
. "$C_TAP_SOURCE"/tap/libtap.sh
cd "$C_TAP_BUILD"
plan 4
ok 'the first test' true
ok '' [ 42 -eq 42 ]
diag a diagnostic, ignored by the harness
ok '' false
skip 'a skipped test'
The shell framework doesn't provide the is_* functions, so you'll use
the ok function more. It takes a string describing the text and then
treats all of its remaining arguments as a condition, evaluated the
same way as the arguments to the "if" statement. If that condition
evaluates to true, the test passes; otherwise, the test fails.
The plan, plan_lazy, diag, and bail functions work the same as with
the C library. skip takes a string and skips the next test with that
explanation. skip_block takes a count and a string and skips that
many tests with that explanation. skip_all takes an optional reason
and skips the entire test case.
Since it's common for shell programs to want to test the output of
commands, there's an additional function ok_program provided by the
shell test library. It takes the test description string, the
expected exit status, the expected program output, and then treats the
rest of its arguments as the program to run. That program is run with
standard error and standard output combined, and then its exit status
and output are tested against the provided values.
A utility function, strip_colon_error, is provided that runs the
command given as its arguments and strips text following a colon and a
space from the output (unless there is no whitespace on the line
before the colon and the space, normally indicating a prefix of the
program name). This function can be used to wrap commands that are
expected to fail with output that has a system- or locale-specific
error message appended, such as the output of strerror().
License
This file is part of the documentation of C TAP Harness, which can be
found at <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
Copyright 2010, 2016 Russ Allbery <eagle@eyrie.org>
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. This file is offered as-is,
without any warranty.

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#

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/*
* Some utility routines for writing tests.
*
* Here are a variety of utility routines for writing tests compatible with
* the TAP protocol. All routines of the form ok() or is*() take a test
* number and some number of appropriate arguments, check to be sure the
* results match the expected output using the arguments, and print out
* something appropriate for that test number. Other utility routines help in
* constructing more complex tests, skipping tests, reporting errors, setting
* up the TAP output format, or finding things in the test environment.
*
* This file is part of C TAP Harness. The current version plus supporting
* documentation is at <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
*
* Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
* Russ Allbery <eagle@eyrie.org>
* Copyright 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2011, 2012, 2013, 2014
* The Board of Trustees of the Leland Stanford Junior University
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
# include <direct.h>
#else
# include <sys/stat.h>
#endif
#include <sys/types.h>
#include <unistd.h>
#include <tests/tap/basic.h>
/* Windows provides mkdir and rmdir under different names. */
#ifdef _WIN32
# define mkdir(p, m) _mkdir(p)
# define rmdir(p) _rmdir(p)
#endif
/*
* The test count. Always contains the number that will be used for the next
* test status. This is exported to callers of the library.
*/
unsigned long testnum = 1;
/*
* Status information stored so that we can give a test summary at the end of
* the test case. We store the planned final test and the count of failures.
* We can get the highest test count from testnum.
*/
static unsigned long _planned = 0;
static unsigned long _failed = 0;
/*
* Store the PID of the process that called plan() and only summarize
* results when that process exits, so as to not misreport results in forked
* processes.
*/
static pid_t _process = 0;
/*
* If true, we're doing lazy planning and will print out the plan based on the
* last test number at the end of testing.
*/
static int _lazy = 0;
/*
* If true, the test was aborted by calling bail(). Currently, this is only
* used to ensure that we pass a false value to any cleanup functions even if
* all tests to that point have passed.
*/
static int _aborted = 0;
/*
* Registered cleanup functions. These are stored as a linked list and run in
* registered order by finish when the test program exits. Each function is
* passed a boolean value indicating whether all tests were successful.
*/
struct cleanup_func {
test_cleanup_func func;
struct cleanup_func *next;
};
static struct cleanup_func *cleanup_funcs = NULL;
/*
* Registered diag files. Any output found in these files will be printed out
* as if it were passed to diag() before any other output we do. This allows
* background processes to log to a file and have that output interleaved with
* the test output.
*/
struct diag_file {
char *name;
FILE *file;
char *buffer;
size_t bufsize;
struct diag_file *next;
};
static struct diag_file *diag_files = NULL;
/*
* Print a specified prefix and then the test description. Handles turning
* the argument list into a va_args structure suitable for passing to
* print_desc, which has to be done in a macro. Assumes that format is the
* argument immediately before the variadic arguments.
*/
#define PRINT_DESC(prefix, format) \
do { \
if (format != NULL) { \
va_list args; \
if (prefix != NULL) \
printf("%s", prefix); \
va_start(args, format); \
vprintf(format, args); \
va_end(args); \
} \
} while (0)
/*
* Form a new string by concatenating multiple strings. The arguments must be
* terminated by (const char *) 0.
*
* This function only exists because we can't assume asprintf. We can't
* simulate asprintf with snprintf because we're only assuming SUSv3, which
* does not require that snprintf with a NULL buffer return the required
* length. When those constraints are relaxed, this should be ripped out and
* replaced with asprintf or a more trivial replacement with snprintf.
*/
static char *
concat(const char *first, ...)
{
va_list args;
char *result;
const char *string;
size_t offset;
size_t length = 0;
/*
* Find the total memory required. Ensure we don't overflow length. See
* the comment for breallocarray for why we're using UINT_MAX here.
*/
va_start(args, first);
for (string = first; string != NULL; string = va_arg(args, const char *)) {
if (length >= UINT_MAX - strlen(string))
bail("strings too long in concat");
length += strlen(string);
}
va_end(args);
length++;
/* Create the string. */
result = bmalloc(length);
va_start(args, first);
offset = 0;
for (string = first; string != NULL; string = va_arg(args, const char *)) {
memcpy(result + offset, string, strlen(string));
offset += strlen(string);
}
va_end(args);
result[offset] = '\0';
return result;
}
/*
* Check all registered diag_files for any output. We only print out the
* output if we see a complete line; otherwise, we wait for the next newline.
*/
static void
check_diag_files(void)
{
struct diag_file *file;
fpos_t where;
size_t length;
int size, incomplete;
/*
* Walk through each file and read each line of output available. The
* general scheme here used is as follows: try to read a line of output at
* a time. If we get NULL, check for EOF; on EOF, advance to the next
* file.
*
* If we get some data, see if it ends in a newline. If it doesn't end in
* a newline, we have one of two cases: our buffer isn't large enough, in
* which case we resize it and try again, or we have incomplete data in
* the file, in which case we rewind the file and will try again next
* time.
*/
for (file = diag_files; file != NULL; file = file->next) {
clearerr(file->file);
/* Store the current position in case we have to rewind. */
if (fgetpos(file->file, &where) < 0)
sysbail("cannot get position in %s", file->name);
/* Continue until we get EOF or an incomplete line of data. */
incomplete = 0;
while (!feof(file->file) && !incomplete) {
size = file->bufsize > INT_MAX ? INT_MAX : (int) file->bufsize;
if (fgets(file->buffer, size, file->file) == NULL) {
if (ferror(file->file))
sysbail("cannot read from %s", file->name);
continue;
}
/*
* See if the line ends in a newline. If not, see which error
* case we have. Use UINT_MAX as a substitute for SIZE_MAX (see
* the comment for breallocarray).
*/
length = strlen(file->buffer);
if (file->buffer[length - 1] != '\n') {
if (length < file->bufsize - 1)
incomplete = 1;
else {
if (file->bufsize >= UINT_MAX - BUFSIZ)
sysbail("line too long in %s", file->name);
file->bufsize += BUFSIZ;
file->buffer = brealloc(file->buffer, file->bufsize);
}
/*
* On either incomplete lines or too small of a buffer, rewind
* and read the file again (on the next pass, if incomplete).
* It's simpler than trying to double-buffer the file.
*/
if (fsetpos(file->file, &where) < 0)
sysbail("cannot set position in %s", file->name);
continue;
}
/* We saw a complete line. Print it out. */
printf("# %s", file->buffer);
}
}
}
/*
* Our exit handler. Called on completion of the test to report a summary of
* results provided we're still in the original process. This also handles
* printing out the plan if we used plan_lazy(), although that's suppressed if
* we never ran a test (due to an early bail, for example), and running any
* registered cleanup functions.
*/
static void
finish(void)
{
int success, primary;
struct cleanup_func *current;
unsigned long highest = testnum - 1;
struct diag_file *file, *tmp;
/* Check for pending diag_file output. */
check_diag_files();
/* Free the diag_files. */
file = diag_files;
while (file != NULL) {
tmp = file;
file = file->next;
fclose(tmp->file);
free(tmp->name);
free(tmp->buffer);
free(tmp);
}
diag_files = NULL;
/*
* Determine whether all tests were successful, which is needed before
* calling cleanup functions since we pass that fact to the functions.
*/
if (_planned == 0 && _lazy)
_planned = highest;
success = (!_aborted && _planned == highest && _failed == 0);
/*
* If there are any registered cleanup functions, we run those first. We
* always run them, even if we didn't run a test. Don't do anything
* except free the diag_files and call cleanup functions if we aren't the
* primary process (the process in which plan or plan_lazy was called),
* and tell the cleanup functions that fact.
*/
primary = (_process == 0 || getpid() == _process);
while (cleanup_funcs != NULL) {
cleanup_funcs->func(success, primary);
current = cleanup_funcs;
cleanup_funcs = cleanup_funcs->next;
free(current);
}
if (!primary)
return;
/* Don't do anything further if we never planned a test. */
if (_planned == 0)
return;
/* If we're aborting due to bail, don't print summaries. */
if (_aborted)
return;
/* Print out the lazy plan if needed. */
fflush(stderr);
if (_lazy && _planned > 0)
printf("1..%lu\n", _planned);
/* Print out a summary of the results. */
if (_planned > highest)
diag("Looks like you planned %lu test%s but only ran %lu", _planned,
(_planned > 1 ? "s" : ""), highest);
else if (_planned < highest)
diag("Looks like you planned %lu test%s but ran %lu extra", _planned,
(_planned > 1 ? "s" : ""), highest - _planned);
else if (_failed > 0)
diag("Looks like you failed %lu test%s of %lu", _failed,
(_failed > 1 ? "s" : ""), _planned);
else if (_planned != 1)
diag("All %lu tests successful or skipped", _planned);
else
diag("%lu test successful or skipped", _planned);
}
/*
* Initialize things. Turns on line buffering on stdout and then prints out
* the number of tests in the test suite. We intentionally don't check for
* pending diag_file output here, since it should really come after the plan.
*/
void
plan(unsigned long count)
{
if (setvbuf(stdout, NULL, _IOLBF, BUFSIZ) != 0)
sysdiag("cannot set stdout to line buffered");
fflush(stderr);
printf("1..%lu\n", count);
testnum = 1;
_planned = count;
_process = getpid();
if (atexit(finish) != 0) {
sysdiag("cannot register exit handler");
diag("cleanups will not be run");
}
}
/*
* Initialize things for lazy planning, where we'll automatically print out a
* plan at the end of the program. Turns on line buffering on stdout as well.
*/
void
plan_lazy(void)
{
if (setvbuf(stdout, NULL, _IOLBF, BUFSIZ) != 0)
sysdiag("cannot set stdout to line buffered");
testnum = 1;
_process = getpid();
_lazy = 1;
if (atexit(finish) != 0)
sysbail("cannot register exit handler to display plan");
}
/*
* Skip the entire test suite and exits. Should be called instead of plan(),
* not after it, since it prints out a special plan line. Ignore diag_file
* output here, since it's not clear if it's allowed before the plan.
*/
void
skip_all(const char *format, ...)
{
fflush(stderr);
printf("1..0 # skip");
PRINT_DESC(" ", format);
putchar('\n');
exit(0);
}
/*
* Takes a boolean success value and assumes the test passes if that value
* is true and fails if that value is false.
*/
int
ok(int success, const char *format, ...)
{
fflush(stderr);
check_diag_files();
printf("%sok %lu", success ? "" : "not ", testnum++);
if (!success)
_failed++;
PRINT_DESC(" - ", format);
putchar('\n');
return success;
}
/*
* Same as ok(), but takes the format arguments as a va_list.
*/
int
okv(int success, const char *format, va_list args)
{
fflush(stderr);
check_diag_files();
printf("%sok %lu", success ? "" : "not ", testnum++);
if (!success)
_failed++;
if (format != NULL) {
printf(" - ");
vprintf(format, args);
}
putchar('\n');
return success;
}
/*
* Skip a test.
*/
void
skip(const char *reason, ...)
{
fflush(stderr);
check_diag_files();
printf("ok %lu # skip", testnum++);
PRINT_DESC(" ", reason);
putchar('\n');
}
/*
* Report the same status on the next count tests.
*/
int
ok_block(unsigned long count, int success, const char *format, ...)
{
unsigned long i;
fflush(stderr);
check_diag_files();
for (i = 0; i < count; i++) {
printf("%sok %lu", success ? "" : "not ", testnum++);
if (!success)
_failed++;
PRINT_DESC(" - ", format);
putchar('\n');
}
return success;
}
/*
* Skip the next count tests.
*/
void
skip_block(unsigned long count, const char *reason, ...)
{
unsigned long i;
fflush(stderr);
check_diag_files();
for (i = 0; i < count; i++) {
printf("ok %lu # skip", testnum++);
PRINT_DESC(" ", reason);
putchar('\n');
}
}
/*
* Takes an expected boolean value and a seen boolean value and assumes the
* test passes if the truth value of both match.
*/
int
is_bool(int wanted, int seen, const char *format, ...)
{
int success;
fflush(stderr);
check_diag_files();
success = (!!wanted == !!seen);
if (success)
printf("ok %lu", testnum++);
else {
diag("wanted: %s", !!wanted ? "true" : "false");
diag(" seen: %s", !!seen ? "true" : "false");
printf("not ok %lu", testnum++);
_failed++;
}
PRINT_DESC(" - ", format);
putchar('\n');
return success;
}
/*
* Takes an expected integer and a seen integer and assumes the test passes
* if those two numbers match.
*/
int
is_int(long wanted, long seen, const char *format, ...)
{
int success;
fflush(stderr);
check_diag_files();
success = (wanted == seen);
if (success)
printf("ok %lu", testnum++);
else {
diag("wanted: %ld", wanted);
diag(" seen: %ld", seen);
printf("not ok %lu", testnum++);
_failed++;
}
PRINT_DESC(" - ", format);
putchar('\n');
return success;
}
/*
* Takes a string and what the string should be, and assumes the test passes
* if those strings match (using strcmp).
*/
int
is_string(const char *wanted, const char *seen, const char *format, ...)
{
int success;
if (wanted == NULL)
wanted = "(null)";
if (seen == NULL)
seen = "(null)";
fflush(stderr);
check_diag_files();
success = (strcmp(wanted, seen) == 0);
if (success)
printf("ok %lu", testnum++);
else {
diag("wanted: %s", wanted);
diag(" seen: %s", seen);
printf("not ok %lu", testnum++);
_failed++;
}
PRINT_DESC(" - ", format);
putchar('\n');
return success;
}
/*
* Takes an expected unsigned long and a seen unsigned long and assumes the
* test passes if the two numbers match. Otherwise, reports them in hex.
*/
int
is_hex(unsigned long wanted, unsigned long seen, const char *format, ...)
{
int success;
fflush(stderr);
check_diag_files();
success = (wanted == seen);
if (success)
printf("ok %lu", testnum++);
else {
diag("wanted: %lx", (unsigned long) wanted);
diag(" seen: %lx", (unsigned long) seen);
printf("not ok %lu", testnum++);
_failed++;
}
PRINT_DESC(" - ", format);
putchar('\n');
return success;
}
/*
* Bail out with an error.
*/
void
bail(const char *format, ...)
{
va_list args;
_aborted = 1;
fflush(stderr);
check_diag_files();
fflush(stdout);
printf("Bail out! ");
va_start(args, format);
vprintf(format, args);
va_end(args);
printf("\n");
exit(255);
}
/*
* Bail out with an error, appending strerror(errno).
*/
void
sysbail(const char *format, ...)
{
va_list args;
int oerrno = errno;
_aborted = 1;
fflush(stderr);
check_diag_files();
fflush(stdout);
printf("Bail out! ");
va_start(args, format);
vprintf(format, args);
va_end(args);
printf(": %s\n", strerror(oerrno));
exit(255);
}
/*
* Report a diagnostic to stderr. Always returns 1 to allow embedding in
* compound statements.
*/
int
diag(const char *format, ...)
{
va_list args;
fflush(stderr);
check_diag_files();
fflush(stdout);
printf("# ");
va_start(args, format);
vprintf(format, args);
va_end(args);
printf("\n");
return 1;
}
/*
* Report a diagnostic to stderr, appending strerror(errno). Always returns 1
* to allow embedding in compound statements.
*/
int
sysdiag(const char *format, ...)
{
va_list args;
int oerrno = errno;
fflush(stderr);
check_diag_files();
fflush(stdout);
printf("# ");
va_start(args, format);
vprintf(format, args);
va_end(args);
printf(": %s\n", strerror(oerrno));
return 1;
}
/*
* Register a new file for diag_file processing.
*/
void
diag_file_add(const char *name)
{
struct diag_file *file, *prev;
file = bcalloc(1, sizeof(struct diag_file));
file->name = bstrdup(name);
file->file = fopen(file->name, "r");
if (file->file == NULL)
sysbail("cannot open %s", name);
file->buffer = bmalloc(BUFSIZ);
file->bufsize = BUFSIZ;
if (diag_files == NULL)
diag_files = file;
else {
for (prev = diag_files; prev->next != NULL; prev = prev->next)
;
prev->next = file;
}
}
/*
* Remove a file from diag_file processing. If the file is not found, do
* nothing, since there are some situations where it can be removed twice
* (such as if it's removed from a cleanup function, since cleanup functions
* are called after freeing all the diag_files).
*/
void
diag_file_remove(const char *name)
{
struct diag_file *file;
struct diag_file **prev = &diag_files;
for (file = diag_files; file != NULL; file = file->next) {
if (strcmp(file->name, name) == 0) {
*prev = file->next;
fclose(file->file);
free(file->name);
free(file->buffer);
free(file);
return;
}
prev = &file->next;
}
}
/*
* Allocate cleared memory, reporting a fatal error with bail on failure.
*/
void *
bcalloc(size_t n, size_t size)
{
void *p;
p = calloc(n, size);
if (p == NULL)
sysbail("failed to calloc %lu", (unsigned long)(n * size));
return p;
}
/*
* Allocate memory, reporting a fatal error with bail on failure.
*/
void *
bmalloc(size_t size)
{
void *p;
p = malloc(size);
if (p == NULL)
sysbail("failed to malloc %lu", (unsigned long) size);
return p;
}
/*
* Reallocate memory, reporting a fatal error with bail on failure.
*/
void *
brealloc(void *p, size_t size)
{
p = realloc(p, size);
if (p == NULL)
sysbail("failed to realloc %lu bytes", (unsigned long) size);
return p;
}
/*
* The same as brealloc, but determine the size by multiplying an element
* count by a size, similar to calloc. The multiplication is checked for
* integer overflow.
*
* We should technically use SIZE_MAX here for the overflow check, but
* SIZE_MAX is C99 and we're only assuming C89 + SUSv3, which does not
* guarantee that it exists. They do guarantee that UINT_MAX exists, and we
* can assume that UINT_MAX <= SIZE_MAX.
*
* (In theory, C89 and C99 permit size_t to be smaller than unsigned int, but
* I disbelieve in the existence of such systems and they will have to cope
* without overflow checks.)
*/
void *
breallocarray(void *p, size_t n, size_t size)
{
if (n > 0 && UINT_MAX / n <= size)
bail("reallocarray too large");
p = realloc(p, n * size);
if (p == NULL)
sysbail("failed to realloc %lu bytes", (unsigned long) (n * size));
return p;
}
/*
* Copy a string, reporting a fatal error with bail on failure.
*/
char *
bstrdup(const char *s)
{
char *p;
size_t len;
len = strlen(s) + 1;
p = malloc(len);
if (p == NULL)
sysbail("failed to strdup %lu bytes", (unsigned long) len);
memcpy(p, s, len);
return p;
}
/*
* Copy up to n characters of a string, reporting a fatal error with bail on
* failure. Don't use the system strndup function, since it may not exist and
* the TAP library doesn't assume any portability support.
*/
char *
bstrndup(const char *s, size_t n)
{
const char *p;
char *copy;
size_t length;
/* Don't assume that the source string is nul-terminated. */
for (p = s; (size_t) (p - s) < n && *p != '\0'; p++)
;
length = (size_t) (p - s);
copy = malloc(length + 1);
if (p == NULL)
sysbail("failed to strndup %lu bytes", (unsigned long) length);
memcpy(copy, s, length);
copy[length] = '\0';
return copy;
}
/*
* Locate a test file. Given the partial path to a file, look under
* C_TAP_BUILD and then C_TAP_SOURCE for the file and return the full path to
* the file. Returns NULL if the file doesn't exist. A non-NULL return
* should be freed with test_file_path_free().
*/
char *
test_file_path(const char *file)
{
char *base;
char *path = NULL;
const char *envs[] = { "C_TAP_BUILD", "C_TAP_SOURCE", NULL };
int i;
for (i = 0; envs[i] != NULL; i++) {
base = getenv(envs[i]);
if (base == NULL)
continue;
path = concat(base, "/", file, (const char *) 0);
if (access(path, R_OK) == 0)
break;
free(path);
path = NULL;
}
return path;
}
/*
* Free a path returned from test_file_path(). This function exists primarily
* for Windows, where memory must be freed from the same library domain that
* it was allocated from.
*/
void
test_file_path_free(char *path)
{
free(path);
}
/*
* Create a temporary directory, tmp, under C_TAP_BUILD if set and the current
* directory if it does not. Returns the path to the temporary directory in
* newly allocated memory, and calls bail on any failure. The return value
* should be freed with test_tmpdir_free.
*
* This function uses sprintf because it attempts to be independent of all
* other portability layers. The use immediately after a memory allocation
* should be safe without using snprintf or strlcpy/strlcat.
*/
char *
test_tmpdir(void)
{
const char *build;
char *path = NULL;
build = getenv("C_TAP_BUILD");
if (build == NULL)
build = ".";
path = concat(build, "/tmp", (const char *) 0);
if (access(path, X_OK) < 0)
if (mkdir(path, 0777) < 0)
sysbail("error creating temporary directory %s", path);
return path;
}
/*
* Free a path returned from test_tmpdir() and attempt to remove the
* directory. If we can't delete the directory, don't worry; something else
* that hasn't yet cleaned up may still be using it.
*/
void
test_tmpdir_free(char *path)
{
if (path != NULL)
rmdir(path);
free(path);
}
/*
* Register a cleanup function that is called when testing ends. All such
* registered functions will be run by finish.
*/
void
test_cleanup_register(test_cleanup_func func)
{
struct cleanup_func *cleanup, **last;
cleanup = bmalloc(sizeof(struct cleanup_func));
cleanup->func = func;
cleanup->next = NULL;
last = &cleanup_funcs;
while (*last != NULL)
last = &(*last)->next;
*last = cleanup;
}

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/*
* Basic utility routines for the TAP protocol.
*
* This file is part of C TAP Harness. The current version plus supporting
* documentation is at <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
*
* Copyright 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
* Russ Allbery <eagle@eyrie.org>
* Copyright 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2011, 2012, 2014
* The Board of Trustees of the Leland Stanford Junior University
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef TAP_BASIC_H
#define TAP_BASIC_H 1
#include <tests/tap/macros.h>
#include <stdarg.h> /* va_list */
#include <stddef.h> /* size_t */
/*
* Used for iterating through arrays. ARRAY_SIZE returns the number of
* elements in the array (useful for a < upper bound in a for loop) and
* ARRAY_END returns a pointer to the element past the end (ISO C99 makes it
* legal to refer to such a pointer as long as it's never dereferenced).
*/
#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
#define ARRAY_END(array) (&(array)[ARRAY_SIZE(array)])
BEGIN_DECLS
/*
* The test count. Always contains the number that will be used for the next
* test status.
*/
extern unsigned long testnum;
/* Print out the number of tests and set standard output to line buffered. */
void plan(unsigned long count);
/*
* Prepare for lazy planning, in which the plan will be printed automatically
* at the end of the test program.
*/
void plan_lazy(void);
/* Skip the entire test suite. Call instead of plan. */
void skip_all(const char *format, ...)
__attribute__((__noreturn__, __format__(printf, 1, 2)));
/*
* Basic reporting functions. The okv() function is the same as ok() but
* takes the test description as a va_list to make it easier to reuse the
* reporting infrastructure when writing new tests. ok() and okv() return the
* value of the success argument.
*/
int ok(int success, const char *format, ...)
__attribute__((__format__(printf, 2, 3)));
int okv(int success, const char *format, va_list args)
__attribute__((__format__(printf, 2, 0)));
void skip(const char *reason, ...)
__attribute__((__format__(printf, 1, 2)));
/*
* Report the same status on, or skip, the next count tests. ok_block()
* returns the value of the success argument.
*/
int ok_block(unsigned long count, int success, const char *format, ...)
__attribute__((__format__(printf, 3, 4)));
void skip_block(unsigned long count, const char *reason, ...)
__attribute__((__format__(printf, 2, 3)));
/*
* Check an expected value against a seen value. Returns true if the test
* passes and false if it fails. is_bool takes an int since the bool type
* isn't fully portable yet, but interprets both arguments for their truth
* value, not for their numeric value.
*/
int is_bool(int wanted, int seen, const char *format, ...)
__attribute__((__format__(printf, 3, 4)));
int is_int(long wanted, long seen, const char *format, ...)
__attribute__((__format__(printf, 3, 4)));
int is_string(const char *wanted, const char *seen, const char *format, ...)
__attribute__((__format__(printf, 3, 4)));
int is_hex(unsigned long wanted, unsigned long seen, const char *format, ...)
__attribute__((__format__(printf, 3, 4)));
/* Bail out with an error. sysbail appends strerror(errno). */
void bail(const char *format, ...)
__attribute__((__noreturn__, __nonnull__, __format__(printf, 1, 2)));
void sysbail(const char *format, ...)
__attribute__((__noreturn__, __nonnull__, __format__(printf, 1, 2)));
/* Report a diagnostic to stderr prefixed with #. */
int diag(const char *format, ...)
__attribute__((__nonnull__, __format__(printf, 1, 2)));
int sysdiag(const char *format, ...)
__attribute__((__nonnull__, __format__(printf, 1, 2)));
/*
* Register or unregister a file that contains supplementary diagnostics.
* Before any other output, all registered files will be read, line by line,
* and each line will be reported as a diagnostic as if it were passed to
* diag(). Nul characters are not supported in these files and will result in
* truncated output.
*/
void diag_file_add(const char *file)
__attribute__((__nonnull__));
void diag_file_remove(const char *file)
__attribute__((__nonnull__));
/* Allocate memory, reporting a fatal error with bail on failure. */
void *bcalloc(size_t, size_t)
__attribute__((__alloc_size__(1, 2), __malloc__, __warn_unused_result__));
void *bmalloc(size_t)
__attribute__((__alloc_size__(1), __malloc__, __warn_unused_result__));
void *breallocarray(void *, size_t, size_t)
__attribute__((__alloc_size__(2, 3), __malloc__, __warn_unused_result__));
void *brealloc(void *, size_t)
__attribute__((__alloc_size__(2), __malloc__, __warn_unused_result__));
char *bstrdup(const char *)
__attribute__((__malloc__, __nonnull__, __warn_unused_result__));
char *bstrndup(const char *, size_t)
__attribute__((__malloc__, __nonnull__, __warn_unused_result__));
/*
* Find a test file under C_TAP_BUILD or C_TAP_SOURCE, returning the full
* path. The returned path should be freed with test_file_path_free().
*/
char *test_file_path(const char *file)
__attribute__((__malloc__, __nonnull__, __warn_unused_result__));
void test_file_path_free(char *path);
/*
* Create a temporary directory relative to C_TAP_BUILD and return the path.
* The returned path should be freed with test_tmpdir_free().
*/
char *test_tmpdir(void)
__attribute__((__malloc__, __warn_unused_result__));
void test_tmpdir_free(char *path);
/*
* Register a cleanup function that is called when testing ends. All such
* registered functions will be run during atexit handling (and are therefore
* subject to all the same constraints and caveats as atexit functions).
*
* The function must return void and will be passed two arguments: an int that
* will be true if the test completed successfully and false otherwise, and an
* int that will be true if the cleanup function is run in the primary process
* (the one that called plan or plan_lazy) and false otherwise.
*/
typedef void (*test_cleanup_func)(int, int);
void test_cleanup_register(test_cleanup_func)
__attribute__((__nonnull__));
END_DECLS
#endif /* TAP_BASIC_H */

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/*
* Utility routines for writing floating point tests.
*
* Currently provides only one function, which checks whether a double is
* equal to an expected value within a given epsilon. This is broken into a
* separate source file from the rest of the basic C TAP library because it
* may require linking with -lm on some platforms, and the package may not
* otherwise care about floating point.
*
* This file is part of C TAP Harness. The current version plus supporting
* documentation is at <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
*
* Copyright 2008, 2010, 2012, 2013, 2014, 2015, 2016
* Russ Allbery <eagle@eyrie.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/* Required for isnan() and isinf(). */
#if defined(__STRICT_ANSI__) || defined(PEDANTIC)
# ifndef _XOPEN_SOURCE
# define _XOPEN_SOURCE 600
# endif
#endif
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
#include <tests/tap/basic.h>
#include <tests/tap/float.h>
/*
* Takes an expected double and a seen double and assumes the test passes if
* those two numbers are within delta of each other.
*/
int
is_double(double wanted, double seen, double epsilon, const char *format, ...)
{
va_list args;
int success;
va_start(args, format);
fflush(stderr);
if ((isnan(wanted) && isnan(seen))
|| (isinf(wanted) && isinf(wanted) == isinf(seen))
|| fabs(wanted - seen) <= epsilon) {
success = 1;
okv(1, format, args);
} else {
success = 0;
diag("wanted: %g", wanted);
diag(" seen: %g", seen);
okv(0, format, args);
}
va_end(args);
return success;
}

42
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/*
* Floating point check function for the TAP protocol.
*
* This file is part of C TAP Harness. The current version plus supporting
* documentation is at <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
*
* Copyright 2008, 2010, 2012, 2014 Russ Allbery <eagle@eyrie.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef TAP_FLOAT_H
#define TAP_FLOAT_H 1
#include <tests/tap/macros.h>
BEGIN_DECLS
/* Check an expected value against a seen value within epsilon. */
int is_double(double wanted, double seen, double epsilon,
const char *format, ...)
__attribute__((__format__(printf, 4, 5)));
END_DECLS
#endif /* TAP_FLOAT_H */

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# Shell function library for test cases.
#
# Note that while many of the functions in this library could benefit from
# using "local" to avoid possibly hammering global variables, Solaris /bin/sh
# doesn't support local and this library aspires to be portable to Solaris
# Bourne shell. Instead, all private variables are prefixed with "tap_".
#
# This file provides a TAP-compatible shell function library useful for
# writing test cases. It is part of C TAP Harness, which can be found at
# <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
#
# Written by Russ Allbery <eagle@eyrie.org>
# Copyright 2009, 2010, 2011, 2012, 2016 Russ Allbery <eagle@eyrie.org>
# Copyright 2006, 2007, 2008, 2013
# The Board of Trustees of the Leland Stanford Junior University
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
# Print out the number of test cases we expect to run.
plan () {
count=1
planned="$1"
failed=0
echo "1..$1"
trap finish 0
}
# Prepare for lazy planning.
plan_lazy () {
count=1
planned=0
failed=0
trap finish 0
}
# Report the test status on exit.
finish () {
tap_highest=`expr "$count" - 1`
if [ "$planned" = 0 ] ; then
echo "1..$tap_highest"
planned="$tap_highest"
fi
tap_looks='# Looks like you'
if [ "$planned" -gt 0 ] ; then
if [ "$planned" -gt "$tap_highest" ] ; then
if [ "$planned" -gt 1 ] ; then
echo "$tap_looks planned $planned tests but only ran" \
"$tap_highest"
else
echo "$tap_looks planned $planned test but only ran" \
"$tap_highest"
fi
elif [ "$planned" -lt "$tap_highest" ] ; then
tap_extra=`expr "$tap_highest" - "$planned"`
if [ "$planned" -gt 1 ] ; then
echo "$tap_looks planned $planned tests but ran" \
"$tap_extra extra"
else
echo "$tap_looks planned $planned test but ran" \
"$tap_extra extra"
fi
elif [ "$failed" -gt 0 ] ; then
if [ "$failed" -gt 1 ] ; then
echo "$tap_looks failed $failed tests of $planned"
else
echo "$tap_looks failed $failed test of $planned"
fi
elif [ "$planned" -gt 1 ] ; then
echo "# All $planned tests successful or skipped"
else
echo "# $planned test successful or skipped"
fi
fi
}
# Skip the entire test suite. Should be run instead of plan.
skip_all () {
tap_desc="$1"
if [ -n "$tap_desc" ] ; then
echo "1..0 # skip $tap_desc"
else
echo "1..0 # skip"
fi
exit 0
}
# ok takes a test description and a command to run and prints success if that
# command is successful, false otherwise. The count starts at 1 and is
# updated each time ok is printed.
ok () {
tap_desc="$1"
if [ -n "$tap_desc" ] ; then
tap_desc=" - $tap_desc"
fi
shift
if "$@" ; then
echo ok "$count$tap_desc"
else
echo not ok "$count$tap_desc"
failed=`expr $failed + 1`
fi
count=`expr $count + 1`
}
# Skip the next test. Takes the reason why the test is skipped.
skip () {
echo "ok $count # skip $*"
count=`expr $count + 1`
}
# Report the same status on a whole set of tests. Takes the count of tests,
# the description, and then the command to run to determine the status.
ok_block () {
tap_i=$count
tap_end=`expr $count + $1`
shift
while [ "$tap_i" -lt "$tap_end" ] ; do
ok "$@"
tap_i=`expr $tap_i + 1`
done
}
# Skip a whole set of tests. Takes the count and then the reason for skipping
# the test.
skip_block () {
tap_i=$count
tap_end=`expr $count + $1`
shift
while [ "$tap_i" -lt "$tap_end" ] ; do
skip "$@"
tap_i=`expr $tap_i + 1`
done
}
# Portable variant of printf '%s\n' "$*". In the majority of cases, this
# function is slower than printf, because the latter is often implemented
# as a builtin command. The value of the variable IFS is ignored.
#
# This macro must not be called via backticks inside double quotes, since this
# will result in bizarre escaping behavior and lots of extra backslashes on
# Solaris.
puts () {
cat << EOH
$@
EOH
}
# Run a program expected to succeed, and print ok if it does and produces the
# correct output. Takes the description, expected exit status, the expected
# output, the command to run, and then any arguments for that command.
# Standard output and standard error are combined when analyzing the output of
# the command.
#
# If the command may contain system-specific error messages in its output,
# add strip_colon_error before the command to post-process its output.
ok_program () {
tap_desc="$1"
shift
tap_w_status="$1"
shift
tap_w_output="$1"
shift
tap_output=`"$@" 2>&1`
tap_status=$?
if [ $tap_status = $tap_w_status ] \
&& [ x"$tap_output" = x"$tap_w_output" ] ; then
ok "$tap_desc" true
else
echo "# saw: ($tap_status) $tap_output"
echo "# not: ($tap_w_status) $tap_w_output"
ok "$tap_desc" false
fi
}
# Strip a colon and everything after it off the output of a command, as long
# as that colon comes after at least one whitespace character. (This is done
# to avoid stripping the name of the program from the start of an error
# message.) This is used to remove system-specific error messages (coming
# from strerror, for example).
strip_colon_error() {
tap_output=`"$@" 2>&1`
tap_status=$?
tap_output=`puts "$tap_output" | sed 's/^\([^ ]* [^:]*\):.*/\1/'`
puts "$tap_output"
return $tap_status
}
# Bail out with an error message.
bail () {
echo 'Bail out!' "$@"
exit 255
}
# Output a diagnostic on standard error, preceded by the required # mark.
diag () {
echo '#' "$@"
}
# Search for the given file first in $C_TAP_BUILD and then in $C_TAP_SOURCE
# and echo the path where the file was found, or the empty string if the file
# wasn't found.
#
# This macro uses puts, so don't run it using backticks inside double quotes
# or bizarre quoting behavior will happen with Solaris sh.
test_file_path () {
if [ -n "$C_TAP_BUILD" ] && [ -f "$C_TAP_BUILD/$1" ] ; then
puts "$C_TAP_BUILD/$1"
elif [ -n "$C_TAP_SOURCE" ] && [ -f "$C_TAP_SOURCE/$1" ] ; then
puts "$C_TAP_SOURCE/$1"
else
echo ''
fi
}
# Create $C_TAP_BUILD/tmp for use by tests for storing temporary files and
# return the path (via standard output).
#
# This macro uses puts, so don't run it using backticks inside double quotes
# or bizarre quoting behavior will happen with Solaris sh.
test_tmpdir () {
if [ -z "$C_TAP_BUILD" ] ; then
tap_tmpdir="./tmp"
else
tap_tmpdir="$C_TAP_BUILD"/tmp
fi
if [ ! -d "$tap_tmpdir" ] ; then
mkdir "$tap_tmpdir" || bail "Error creating $tap_tmpdir"
fi
puts "$tap_tmpdir"
}

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/*
* Helpful macros for TAP header files.
*
* This is not, strictly speaking, related to TAP, but any TAP add-on is
* probably going to need these macros, so define them in one place so that
* everyone can pull them in.
*
* This file is part of C TAP Harness. The current version plus supporting
* documentation is at <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
*
* Copyright 2008, 2012, 2013, 2015 Russ Allbery <eagle@eyrie.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef TAP_MACROS_H
#define TAP_MACROS_H 1
/*
* __attribute__ is available in gcc 2.5 and later, but only with gcc 2.7
* could you use the __format__ form of the attributes, which is what we use
* (to avoid confusion with other macros), and only with gcc 2.96 can you use
* the attribute __malloc__. 2.96 is very old, so don't bother trying to get
* the other attributes to work with GCC versions between 2.7 and 2.96.
*/
#ifndef __attribute__
# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
# define __attribute__(spec) /* empty */
# endif
#endif
/*
* We use __alloc_size__, but it was only available in fairly recent versions
* of GCC. Suppress warnings about the unknown attribute if GCC is too old.
* We know that we're GCC at this point, so we can use the GCC variadic macro
* extension, which will still work with versions of GCC too old to have C99
* variadic macro support.
*/
#if !defined(__attribute__) && !defined(__alloc_size__)
# if defined(__GNUC__) && !defined(__clang__)
# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 3)
# define __alloc_size__(spec, args...) /* empty */
# endif
# endif
#endif
/* Suppress __warn_unused_result__ if gcc is too old. */
#if !defined(__attribute__) && !defined(__warn_unused_result__)
# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
# define __warn_unused_result__ /* empty */
# endif
#endif
/*
* LLVM and Clang pretend to be GCC but don't support all of the __attribute__
* settings that GCC does. For them, suppress warnings about unknown
* attributes on declarations. This unfortunately will affect the entire
* compilation context, but there's no push and pop available.
*/
#if !defined(__attribute__) && (defined(__llvm__) || defined(__clang__))
# pragma GCC diagnostic ignored "-Wattributes"
#endif
/* Used for unused parameters to silence gcc warnings. */
#define UNUSED __attribute__((__unused__))
/*
* BEGIN_DECLS is used at the beginning of declarations so that C++
* compilers don't mangle their names. END_DECLS is used at the end.
*/
#undef BEGIN_DECLS
#undef END_DECLS
#ifdef __cplusplus
# define BEGIN_DECLS extern "C" {
# define END_DECLS }
#else
# define BEGIN_DECLS /* empty */
# define END_DECLS /* empty */
#endif
#endif /* TAP_MACROS_H */