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tests: add C TAP harness
2017-07-25 20:02:45 +00:00
/*
* Run a set of tests, reporting results.
*
* Usage:
*
* runtests [-hv] [-b <build-dir>] [-s <source-dir>] -l <test-list>
* runtests [-hv] [-b <build-dir>] [-s <source-dir>] <test> [<test> ...]
* runtests -o [-h] [-b <build-dir>] [-s <source-dir>] <test>
*
* In the first case, expects a list of executables located in the given file,
* one line per executable. For each one, runs it as part of a test suite,
* reporting results. In the second case, use the same infrastructure, but
* run only the tests listed on the command line.
*
* Test output should start with a line containing the number of tests
* (numbered from 1 to this number), optionally preceded by "1..", although
* that line may be given anywhere in the output. Each additional line should
* be in the following format:
*
* ok <number>
* not ok <number>
* ok <number> # skip
* not ok <number> # todo
*
* where <number> is the number of the test. An optional comment is permitted
* after the number if preceded by whitespace. ok indicates success, not ok
* indicates failure. "# skip" and "# todo" are a special cases of a comment,
* and must start with exactly that formatting. They indicate the test was
* skipped for some reason (maybe because it doesn't apply to this platform)
* or is testing something known to currently fail. The text following either
* "# skip" or "# todo" and whitespace is the reason.
*
* As a special case, the first line of the output may be in the form:
*
* 1..0 # skip some reason
*
* which indicates that this entire test case should be skipped and gives a
* reason.
*
* Any other lines are ignored, although for compliance with the TAP protocol
* all lines other than the ones in the above format should be sent to
* standard error rather than standard output and start with #.
*
* This is a subset of TAP as documented in Test::Harness::TAP or
* TAP::Parser::Grammar, which comes with Perl.
*
* If the -o option is given, instead run a single test and display all of its
* output. This is intended for use with failing tests so that the person
* running the test suite can get more details about what failed.
*
* If built with the C preprocessor symbols C_TAP_SOURCE and C_TAP_BUILD
* defined, C TAP Harness will export those values in the environment so that
* tests can find the source and build directory and will look for tests under
* both directories. These paths can also be set with the -b and -s
* command-line options, which will override anything set at build time.
*
* If the -v option is given, or the C_TAP_VERBOSE environment variable is set,
* display the full output of each test as it runs rather than showing a
* summary of the results of each test.
*
* Any bug reports, bug fixes, and improvements are very much welcome and
* should be sent to the e-mail address below. This program is part of C TAP
* Harness <https://www.eyrie.org/~eagle/software/c-tap-harness/>.
*
* Copyright 2000, 2001, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 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 fdopen(), getopt(), and putenv(). */
#if defined(__STRICT_ANSI__) || defined(PEDANTIC)
# ifndef _XOPEN_SOURCE
# define _XOPEN_SOURCE 500
# endif
#endif
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
/* sys/time.h must be included before sys/resource.h on some platforms. */
#include <sys/resource.h>
/* AIX 6.1 (and possibly later) doesn't have WCOREDUMP. */
#ifndef WCOREDUMP
# define WCOREDUMP(status) ((unsigned)(status) & 0x80)
#endif
/*
* POSIX requires that these be defined in <unistd.h>, but they're not always
* available. If one of them has been defined, all the rest almost certainly
* have.
*/
#ifndef STDIN_FILENO
# define STDIN_FILENO 0
# define STDOUT_FILENO 1
# define STDERR_FILENO 2
#endif
/*
* Used for iterating through arrays. Returns the number of elements in the
* array (useful for a < upper bound in a for loop).
*/
#define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
/*
* The source and build versions of the tests directory. This is used to set
* the C_TAP_SOURCE and C_TAP_BUILD environment variables (and the SOURCE and
* BUILD environment variables set for backward compatibility) and find test
* programs, if set. Normally, this should be set as part of the build
* process to the test subdirectories of $(abs_top_srcdir) and
* $(abs_top_builddir) respectively.
*/
#ifndef C_TAP_SOURCE
# define C_TAP_SOURCE NULL
#endif
#ifndef C_TAP_BUILD
# define C_TAP_BUILD NULL
#endif
/* Test status codes. */
enum test_status {
TEST_FAIL,
TEST_PASS,
TEST_SKIP,
TEST_INVALID
};
/* Really, just a boolean, but this is more self-documenting. */
enum test_verbose {
CONCISE = 0,
VERBOSE = 1
};
/* Indicates the state of our plan. */
enum plan_status {
PLAN_INIT, /* Nothing seen yet. */
PLAN_FIRST, /* Plan seen before any tests. */
PLAN_PENDING, /* Test seen and no plan yet. */
PLAN_FINAL /* Plan seen after some tests. */
};
/* Error exit statuses for test processes. */
#define CHILDERR_DUP 100 /* Couldn't redirect stderr or stdout. */
#define CHILDERR_EXEC 101 /* Couldn't exec child process. */
#define CHILDERR_STDIN 102 /* Couldn't open stdin file. */
#define CHILDERR_STDERR 103 /* Couldn't open stderr file. */
/* Structure to hold data for a set of tests. */
struct testset {
char *file; /* The file name of the test. */
char *path; /* The path to the test program. */
enum plan_status plan; /* The status of our plan. */
unsigned long count; /* Expected count of tests. */
unsigned long current; /* The last seen test number. */
unsigned int length; /* The length of the last status message. */
unsigned long passed; /* Count of passing tests. */
unsigned long failed; /* Count of failing lists. */
unsigned long skipped; /* Count of skipped tests (passed). */
unsigned long allocated; /* The size of the results table. */
enum test_status *results; /* Table of results by test number. */
unsigned int aborted; /* Whether the set was aborted. */
int reported; /* Whether the results were reported. */
int status; /* The exit status of the test. */
unsigned int all_skipped; /* Whether all tests were skipped. */
char *reason; /* Why all tests were skipped. */
};
/* Structure to hold a linked list of test sets. */
struct testlist {
struct testset *ts;
struct testlist *next;
};
/*
* Usage message. Should be used as a printf format with four arguments: the
* path to runtests, given three times, and the usage_description. This is
* split into variables to satisfy the pedantic ISO C90 limit on strings.
*/
static const char usage_message[] = "\
Usage: %s [-hv] [-b <build-dir>] [-s <source-dir>] <test> ...\n\
%s [-hv] [-b <build-dir>] [-s <source-dir>] -l <test-list>\n\
%s -o [-h] [-b <build-dir>] [-s <source-dir>] <test>\n\
\n\
Options:\n\
-b <build-dir> Set the build directory to <build-dir>\n\
%s";
static const char usage_extra[] = "\
-l <list> Take the list of tests to run from <test-list>\n\
-o Run a single test rather than a list of tests\n\
-s <source-dir> Set the source directory to <source-dir>\n\
-v Show the full output of each test\n\
\n\
runtests normally runs each test listed on the command line. With the -l\n\
option, it instead runs every test listed in a file. With the -o option,\n\
it instead runs a single test and shows its complete output.\n";
/*
* Header used for test output. %s is replaced by the file name of the list
* of tests.
*/
static const char banner[] = "\n\
Running all tests listed in %s. If any tests fail, run the failing\n\
test program with runtests -o to see more details.\n\n";
/* Header for reports of failed tests. */
static const char header[] = "\n\
Failed Set Fail/Total (%) Skip Stat Failing Tests\n\
-------------------------- -------------- ---- ---- ------------------------";
/* Include the file name and line number in malloc failures. */
#define xcalloc(n, size) x_calloc((n), (size), __FILE__, __LINE__)
#define xmalloc(size) x_malloc((size), __FILE__, __LINE__)
#define xstrdup(p) x_strdup((p), __FILE__, __LINE__)
#define xreallocarray(p, n, size) \
x_reallocarray((p), (n), (size), __FILE__, __LINE__)
/*
* __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).
*/
#ifndef __attribute__
# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
# 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
/*
* 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
/* Declare internal functions that benefit from compiler attributes. */
static void sysdie(const char *, ...)
__attribute__((__nonnull__, __noreturn__, __format__(printf, 1, 2)));
static void *x_calloc(size_t, size_t, const char *, int)
__attribute__((__alloc_size__(1, 2), __malloc__, __nonnull__));
static void *x_malloc(size_t, const char *, int)
__attribute__((__alloc_size__(1), __malloc__, __nonnull__));
static void *x_reallocarray(void *, size_t, size_t, const char *, int)
__attribute__((__alloc_size__(2, 3), __malloc__, __nonnull__(4)));
static char *x_strdup(const char *, const char *, int)
__attribute__((__malloc__, __nonnull__));
/*
* Report a fatal error, including the results of strerror, and exit.
*/
static void
sysdie(const char *format, ...)
{
int oerrno;
va_list args;
oerrno = errno;
fflush(stdout);
fprintf(stderr, "runtests: ");
va_start(args, format);
vfprintf(stderr, format, args);
va_end(args);
fprintf(stderr, ": %s\n", strerror(oerrno));
exit(1);
}
/*
* Allocate zeroed memory, reporting a fatal error and exiting on failure.
*/
static void *
x_calloc(size_t n, size_t size, const char *file, int line)
{
void *p;
n = (n > 0) ? n : 1;
size = (size > 0) ? size : 1;
p = calloc(n, size);
if (p == NULL)
sysdie("failed to calloc %lu bytes at %s line %d",
(unsigned long) size, file, line);
return p;
}
/*
* Allocate memory, reporting a fatal error and exiting on failure.
*/
static void *
x_malloc(size_t size, const char *file, int line)
{
void *p;
p = malloc(size);
if (p == NULL)
sysdie("failed to malloc %lu bytes at %s line %d",
(unsigned long) size, file, line);
return p;
}
/*
* Reallocate memory, reporting a fatal error and exiting on failure.
*
* 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. And we should not be allocating
* anything anywhere near that large.
*
* (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.)
*/
static void *
x_reallocarray(void *p, size_t n, size_t size, const char *file, int line)
{
if (n > 0 && UINT_MAX / n <= size)
sysdie("realloc too large at %s line %d", file, line);
p = realloc(p, n * size);
if (p == NULL)
sysdie("failed to realloc %lu bytes at %s line %d",
(unsigned long) (n * size), file, line);
return p;
}
/*
* Copy a string, reporting a fatal error and exiting on failure.
*/
static char *
x_strdup(const char *s, const char *file, int line)
{
char *p;
size_t len;
len = strlen(s) + 1;
p = malloc(len);
if (p == NULL)
sysdie("failed to strdup %lu bytes at %s line %d",
(unsigned long) len, file, line);
memcpy(p, s, len);
return p;
}
/*
* 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. We
* aren't guaranteed to have SIZE_MAX, so use UINT_MAX as an acceptable
* substitute (see the x_nrealloc comments).
*/
va_start(args, first);
for (string = first; string != NULL; string = va_arg(args, const char *)) {
if (length >= UINT_MAX - strlen(string)) {
errno = EINVAL;
sysdie("strings too long in concat");
}
length += strlen(string);
}
va_end(args);
length++;
/* Create the string. */
result = xmalloc(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;
}
/*
* Given a struct timeval, return the number of seconds it represents as a
* double. Use difftime() to convert a time_t to a double.
*/
static double
tv_seconds(const struct timeval *tv)
{
return difftime(tv->tv_sec, 0) + tv->tv_usec * 1e-6;
}
/*
* Given two struct timevals, return the difference in seconds.
*/
static double
tv_diff(const struct timeval *tv1, const struct timeval *tv0)
{
return tv_seconds(tv1) - tv_seconds(tv0);
}
/*
* Given two struct timevals, return the sum in seconds as a double.
*/
static double
tv_sum(const struct timeval *tv1, const struct timeval *tv2)
{
return tv_seconds(tv1) + tv_seconds(tv2);
}
/*
* Given a pointer to a string, skip any leading whitespace and return a
* pointer to the first non-whitespace character.
*/
static const char *
skip_whitespace(const char *p)
{
while (isspace((unsigned char)(*p)))
p++;
return p;
}
/*
* Start a program, connecting its stdout to a pipe on our end and its stderr
* to /dev/null, and storing the file descriptor to read from in the two
* argument. Returns the PID of the new process. Errors are fatal.
*/
static pid_t
test_start(const char *path, int *fd)
{
int fds[2], infd, errfd;
pid_t child;
/* Create a pipe used to capture the output from the test program. */
if (pipe(fds) == -1) {
puts("ABORTED");
fflush(stdout);
sysdie("can't create pipe");
}
/* Fork a child process, massage the file descriptors, and exec. */
child = fork();
switch (child) {
case -1:
puts("ABORTED");
fflush(stdout);
sysdie("can't fork");
/* In the child. Set up our standard output. */
case 0:
close(fds[0]);
close(STDOUT_FILENO);
if (dup2(fds[1], STDOUT_FILENO) < 0)
_exit(CHILDERR_DUP);
close(fds[1]);
/* Point standard input at /dev/null. */
close(STDIN_FILENO);
infd = open("/dev/null", O_RDONLY);
if (infd < 0)
_exit(CHILDERR_STDIN);
if (infd != STDIN_FILENO) {
if (dup2(infd, STDIN_FILENO) < 0)
_exit(CHILDERR_DUP);
close(infd);
}
/* Point standard error at /dev/null. */
close(STDERR_FILENO);
errfd = open("/dev/null", O_WRONLY);
if (errfd < 0)
_exit(CHILDERR_STDERR);
if (errfd != STDERR_FILENO) {
if (dup2(errfd, STDERR_FILENO) < 0)
_exit(CHILDERR_DUP);
close(errfd);
}
/* Now, exec our process. */
if (execl(path, path, (char *) 0) == -1)
_exit(CHILDERR_EXEC);
break;
/* In parent. Close the extra file descriptor. */
default:
close(fds[1]);
break;
}
*fd = fds[0];
return child;
}
/*
* Back up over the output saying what test we were executing.
*/
static void
test_backspace(struct testset *ts)
{
unsigned int i;
if (!isatty(STDOUT_FILENO))
return;
for (i = 0; i < ts->length; i++)
putchar('\b');
for (i = 0; i < ts->length; i++)
putchar(' ');
for (i = 0; i < ts->length; i++)
putchar('\b');
ts->length = 0;
}
/*
* Allocate or resize the array of test results to be large enough to contain
* the test number in.
*/
static void
resize_results(struct testset *ts, unsigned long n)
{
unsigned long i;
size_t s;
/* If there's already enough space, return quickly. */
if (n <= ts->allocated)
return;
/*
* If no space has been allocated, do the initial allocation. Otherwise,
* resize. Start with 32 test cases and then add 1024 with each resize to
* try to reduce the number of reallocations.
*/
if (ts->allocated == 0) {
s = (n > 32) ? n : 32;
ts->results = xcalloc(s, sizeof(enum test_status));
} else {
s = (n > ts->allocated + 1024) ? n : ts->allocated + 1024;
ts->results = xreallocarray(ts->results, s, sizeof(enum test_status));
}
/* Set the results for the newly-allocated test array. */
for (i = ts->allocated; i < s; i++)
ts->results[i] = TEST_INVALID;
ts->allocated = s;
}
/*
* Report an invalid test number and set the appropriate flags. Pulled into a
* separate function since we do this in several places.
*/
static void
invalid_test_number(struct testset *ts, long n, enum test_verbose verbose)
{
if (!verbose)
test_backspace(ts);
printf("ABORTED (invalid test number %ld)\n", n);
ts->aborted = 1;
ts->reported = 1;
}
/*
* Read the plan line of test output, which should contain the range of test
* numbers. We may initialize the testset structure here if we haven't yet
* seen a test. Return true if initialization succeeded and the test should
* continue, false otherwise.
*/
static int
test_plan(const char *line, struct testset *ts, enum test_verbose verbose)
{
long n;
/*
* Accept a plan without the leading 1.. for compatibility with older
* versions of runtests. This will only be allowed if we've not yet seen
* a test result.
*/
line = skip_whitespace(line);
if (strncmp(line, "1..", 3) == 0)
line += 3;
/*
* Get the count and check it for validity.
*
* If we have something of the form "1..0 # skip foo", the whole file was
* skipped; record that. If we do skip the whole file, zero out all of
* our statistics, since they're no longer relevant.
*
* strtol is called with a second argument to advance the line pointer
* past the count to make it simpler to detect the # skip case.
*/
n = strtol(line, (char **) &line, 10);
if (n == 0) {
line = skip_whitespace(line);
if (*line == '#') {
line = skip_whitespace(line + 1);
if (strncasecmp(line, "skip", 4) == 0) {
line = skip_whitespace(line + 4);
if (*line != '\0') {
ts->reason = xstrdup(line);
ts->reason[strlen(ts->reason) - 1] = '\0';
}
ts->all_skipped = 1;
ts->aborted = 1;
ts->count = 0;
ts->passed = 0;
ts->skipped = 0;
ts->failed = 0;
return 0;
}
}
}
if (n <= 0) {
puts("ABORTED (invalid test count)");
ts->aborted = 1;
ts->reported = 1;
return 0;
}
/*
* If we are doing lazy planning, check the plan against the largest test
* number that we saw and fail now if we saw a check outside the plan
* range.
*/
if (ts->plan == PLAN_PENDING && (unsigned long) n < ts->count) {
invalid_test_number(ts, (long) ts->count, verbose);
return 0;
}
/*
* Otherwise, allocated or resize the results if needed and update count,
* and then record that we've seen a plan.
*/
resize_results(ts, (unsigned long) n);
ts->count = (unsigned long) n;
if (ts->plan == PLAN_INIT)
ts->plan = PLAN_FIRST;
else if (ts->plan == PLAN_PENDING)
ts->plan = PLAN_FINAL;
return 1;
}
/*
* Given a single line of output from a test, parse it and return the success
* status of that test. Anything printed to stdout not matching the form
* /^(not )?ok \d+/ is ignored. Sets ts->current to the test number that just
* reported status.
*/
static void
test_checkline(const char *line, struct testset *ts,
enum test_verbose verbose)
{
enum test_status status = TEST_PASS;
const char *bail;
char *end;
long number;
unsigned long current;
int outlen;
/* Before anything, check for a test abort. */
bail = strstr(line, "Bail out!");
if (bail != NULL) {
bail = skip_whitespace(bail + strlen("Bail out!"));
if (*bail != '\0') {
size_t length;
length = strlen(bail);
if (bail[length - 1] == '\n')
length--;
if (!verbose)
test_backspace(ts);
printf("ABORTED (%.*s)\n", (int) length, bail);
ts->reported = 1;
}
ts->aborted = 1;
return;
}
/*
* If the given line isn't newline-terminated, it was too big for an
* fgets(), which means ignore it.
*/
if (line[strlen(line) - 1] != '\n')
return;
/* If the line begins with a hash mark, ignore it. */
if (line[0] == '#')
return;
/* If we haven't yet seen a plan, look for one. */
if (ts->plan == PLAN_INIT && isdigit((unsigned char)(*line))) {
if (!test_plan(line, ts, verbose))
return;
} else if (strncmp(line, "1..", 3) == 0) {
if (ts->plan == PLAN_PENDING) {
if (!test_plan(line, ts, verbose))
return;
} else {
if (!verbose)
test_backspace(ts);
puts("ABORTED (multiple plans)");
ts->aborted = 1;
ts->reported = 1;
return;
}
}
/* Parse the line, ignoring something we can't parse. */
if (strncmp(line, "not ", 4) == 0) {
status = TEST_FAIL;
line += 4;
}
if (strncmp(line, "ok", 2) != 0)
return;
line = skip_whitespace(line + 2);
errno = 0;
number = strtol(line, &end, 10);
if (errno != 0 || end == line)
current = ts->current + 1;
else if (number <= 0) {
invalid_test_number(ts, number, verbose);
return;
} else
current = (unsigned long) number;
if (current > ts->count && ts->plan == PLAN_FIRST) {
invalid_test_number(ts, (long) current, verbose);
return;
}
/* We have a valid test result. Tweak the results array if needed. */
if (ts->plan == PLAN_INIT || ts->plan == PLAN_PENDING) {
ts->plan = PLAN_PENDING;
resize_results(ts, current);
if (current > ts->count)
ts->count = current;
}
/*
* Handle directives. We should probably do something more interesting
* with unexpected passes of todo tests.
*/
while (isdigit((unsigned char)(*line)))
line++;
line = skip_whitespace(line);
if (*line == '#') {
line = skip_whitespace(line + 1);
if (strncasecmp(line, "skip", 4) == 0)
status = TEST_SKIP;
if (strncasecmp(line, "todo", 4) == 0)
status = (status == TEST_FAIL) ? TEST_SKIP : TEST_FAIL;
}
/* Make sure that the test number is in range and not a duplicate. */
if (ts->results[current - 1] != TEST_INVALID) {
if (!verbose)
test_backspace(ts);
printf("ABORTED (duplicate test number %lu)\n", current);
ts->aborted = 1;
ts->reported = 1;
return;
}
/* Good results. Increment our various counters. */
switch (status) {
case TEST_PASS: ts->passed++; break;
case TEST_FAIL: ts->failed++; break;
case TEST_SKIP: ts->skipped++; break;
case TEST_INVALID: break;
}
ts->current = current;
ts->results[current - 1] = status;
if (!verbose && isatty(STDOUT_FILENO)) {
test_backspace(ts);
if (ts->plan == PLAN_PENDING)
outlen = printf("%lu/?", current);
else
outlen = printf("%lu/%lu", current, ts->count);
ts->length = (outlen >= 0) ? (unsigned int) outlen : 0;
fflush(stdout);
}
}
/*
* Print out a range of test numbers, returning the number of characters it
* took up. Takes the first number, the last number, the number of characters
* already printed on the line, and the limit of number of characters the line
* can hold. Add a comma and a space before the range if chars indicates that
* something has already been printed on the line, and print ... instead if
* chars plus the space needed would go over the limit (use a limit of 0 to
* disable this).
*/
static unsigned int
test_print_range(unsigned long first, unsigned long last, unsigned long chars,
unsigned int limit)
{
unsigned int needed = 0;
unsigned long n;
for (n = first; n > 0; n /= 10)
needed++;
if (last > first) {
for (n = last; n > 0; n /= 10)
needed++;
needed++;
}
if (chars > 0)
needed += 2;
if (limit > 0 && chars + needed > limit) {
needed = 0;
if (chars <= limit) {
if (chars > 0) {
printf(", ");
needed += 2;
}
printf("...");
needed += 3;
}
} else {
if (chars > 0)
printf(", ");
if (last > first)
printf("%lu-", first);
printf("%lu", last);
}
return needed;
}
/*
* Summarize a single test set. The second argument is 0 if the set exited
* cleanly, a positive integer representing the exit status if it exited
* with a non-zero status, and a negative integer representing the signal
* that terminated it if it was killed by a signal.
*/
static void
test_summarize(struct testset *ts, int status)
{
unsigned long i;
unsigned long missing = 0;
unsigned long failed = 0;
unsigned long first = 0;
unsigned long last = 0;
if (ts->aborted) {
fputs("ABORTED", stdout);
if (ts->count > 0)
printf(" (passed %lu/%lu)", ts->passed, ts->count - ts->skipped);
} else {
for (i = 0; i < ts->count; i++) {
if (ts->results[i] == TEST_INVALID) {
if (missing == 0)
fputs("MISSED ", stdout);
if (first && i == last)
last = i + 1;
else {
if (first)
test_print_range(first, last, missing - 1, 0);
missing++;
first = i + 1;
last = i + 1;
}
}
}
if (first)
test_print_range(first, last, missing - 1, 0);
first = 0;
last = 0;
for (i = 0; i < ts->count; i++) {
if (ts->results[i] == TEST_FAIL) {
if (missing && !failed)
fputs("; ", stdout);
if (failed == 0)
fputs("FAILED ", stdout);
if (first && i == last)
last = i + 1;
else {
if (first)
test_print_range(first, last, failed - 1, 0);
failed++;
first = i + 1;
last = i + 1;
}
}
}
if (first)
test_print_range(first, last, failed - 1, 0);
if (!missing && !failed) {
fputs(!status ? "ok" : "dubious", stdout);
if (ts->skipped > 0) {
if (ts->skipped == 1)
printf(" (skipped %lu test)", ts->skipped);
else
printf(" (skipped %lu tests)", ts->skipped);
}
}
}
if (status > 0)
printf(" (exit status %d)", status);
else if (status < 0)
printf(" (killed by signal %d%s)", -status,
WCOREDUMP(ts->status) ? ", core dumped" : "");
putchar('\n');
}
/*
* Given a test set, analyze the results, classify the exit status, handle a
* few special error messages, and then pass it along to test_summarize() for
* the regular output. Returns true if the test set ran successfully and all
* tests passed or were skipped, false otherwise.
*/
static int
test_analyze(struct testset *ts)
{
if (ts->reported)
return 0;
if (ts->all_skipped) {
if (ts->reason == NULL)
puts("skipped");
else
printf("skipped (%s)\n", ts->reason);
return 1;
} else if (WIFEXITED(ts->status) && WEXITSTATUS(ts->status) != 0) {
switch (WEXITSTATUS(ts->status)) {
case CHILDERR_DUP:
if (!ts->reported)
puts("ABORTED (can't dup file descriptors)");
break;
case CHILDERR_EXEC:
if (!ts->reported)
puts("ABORTED (execution failed -- not found?)");
break;
case CHILDERR_STDIN:
case CHILDERR_STDERR:
if (!ts->reported)
puts("ABORTED (can't open /dev/null)");
break;
default:
test_summarize(ts, WEXITSTATUS(ts->status));
break;
}
return 0;
} else if (WIFSIGNALED(ts->status)) {
test_summarize(ts, -WTERMSIG(ts->status));
return 0;
} else if (ts->plan != PLAN_FIRST && ts->plan != PLAN_FINAL) {
puts("ABORTED (no valid test plan)");
ts->aborted = 1;
return 0;
} else {
test_summarize(ts, 0);
return (ts->failed == 0);
}
}
/*
* Runs a single test set, accumulating and then reporting the results.
* Returns true if the test set was successfully run and all tests passed,
* false otherwise.
*/
static int
test_run(struct testset *ts, enum test_verbose verbose)
{
pid_t testpid, child;
int outfd, status;
unsigned long i;
FILE *output;
char buffer[BUFSIZ];
/* Run the test program. */
testpid = test_start(ts->path, &outfd);
output = fdopen(outfd, "r");
if (!output) {
puts("ABORTED");
fflush(stdout);
sysdie("fdopen failed");
}
/*
* Pass each line of output to test_checkline(), and print the line if
* verbosity is requested.
*/
while (!ts->aborted && fgets(buffer, sizeof(buffer), output)) {
if (verbose)
printf("%s", buffer);
test_checkline(buffer, ts, verbose);
}
if (ferror(output) || ts->plan == PLAN_INIT)
ts->aborted = 1;
if (!verbose)
test_backspace(ts);
/*
* Consume the rest of the test output, close the output descriptor,
* retrieve the exit status, and pass that information to test_analyze()
* for eventual output.
*/
while (fgets(buffer, sizeof(buffer), output))
if (verbose)
printf("%s", buffer);
fclose(output);
child = waitpid(testpid, &ts->status, 0);
if (child == (pid_t) -1) {
if (!ts->reported) {
puts("ABORTED");
fflush(stdout);
}
sysdie("waitpid for %u failed", (unsigned int) testpid);
}
if (ts->all_skipped)
ts->aborted = 0;
status = test_analyze(ts);
/* Convert missing tests to failed tests. */
for (i = 0; i < ts->count; i++) {
if (ts->results[i] == TEST_INVALID) {
ts->failed++;
ts->results[i] = TEST_FAIL;
status = 0;
}
}
return status;
}
/* Summarize a list of test failures. */
static void
test_fail_summary(const struct testlist *fails)
{
struct testset *ts;
unsigned int chars;
unsigned long i, first, last, total;
puts(header);
/* Failed Set Fail/Total (%) Skip Stat Failing (25)
-------------------------- -------------- ---- ---- -------------- */
for (; fails; fails = fails->next) {
ts = fails->ts;
total = ts->count - ts->skipped;
printf("%-26.26s %4lu/%-4lu %3.0f%% %4lu ", ts->file, ts->failed,
total, total ? (ts->failed * 100.0) / total : 0,
ts->skipped);
if (WIFEXITED(ts->status))
printf("%4d ", WEXITSTATUS(ts->status));
else
printf(" -- ");
if (ts->aborted) {
puts("aborted");
continue;
}
chars = 0;
first = 0;
last = 0;
for (i = 0; i < ts->count; i++) {
if (ts->results[i] == TEST_FAIL) {
if (first != 0 && i == last)
last = i + 1;
else {
if (first != 0)
chars += test_print_range(first, last, chars, 19);
first = i + 1;
last = i + 1;
}
}
}
if (first != 0)
test_print_range(first, last, chars, 19);
putchar('\n');
}
}
/*
* Check whether a given file path is a valid test. Currently, this checks
* whether it is executable and is a regular file. Returns true or false.
*/
static int
is_valid_test(const char *path)
{
struct stat st;
if (access(path, X_OK) < 0)
return 0;
if (stat(path, &st) < 0)
return 0;
if (!S_ISREG(st.st_mode))
return 0;
return 1;
}
/*
* Given the name of a test, a pointer to the testset struct, and the source
* and build directories, find the test. We try first relative to the current
* directory, then in the build directory (if not NULL), then in the source
* directory. In each of those directories, we first try a "-t" extension and
* then a ".t" extension. When we find an executable program, we return the
* path to that program. If none of those paths are executable, just fill in
* the name of the test as is.
*
* The caller is responsible for freeing the path member of the testset
* struct.
*/
static char *
find_test(const char *name, const char *source, const char *build)
{
char *path = NULL;
const char *bases[3], *suffix, *base;
unsigned int i, j;
const char *suffixes[3] = { "-t", ".t", "" };
/* Possible base directories. */
bases[0] = ".";
bases[1] = build;
bases[2] = source;
/* Try each suffix with each base. */
for (i = 0; i < ARRAY_SIZE(suffixes); i++) {
suffix = suffixes[i];
for (j = 0; j < ARRAY_SIZE(bases); j++) {
base = bases[j];
if (base == NULL)
continue;
path = concat(base, "/", name, suffix, (const char *) 0);
if (is_valid_test(path))
return path;
free(path);
path = NULL;
}
}
if (path == NULL)
path = xstrdup(name);
return path;
}
/*
* Read a list of tests from a file, returning the list of tests as a struct
* testlist, or NULL if there were no tests (such as a file containing only
* comments). Reports an error to standard error and exits if the list of
* tests cannot be read.
*/
static struct testlist *
read_test_list(const char *filename)
{
FILE *file;
unsigned int line;
size_t length;
char buffer[BUFSIZ];
const char *testname;
struct testlist *listhead, *current;
/* Create the initial container list that will hold our results. */
listhead = xcalloc(1, sizeof(struct testlist));
current = NULL;
/*
* Open our file of tests to run and read it line by line, creating a new
* struct testlist and struct testset for each line.
*/
file = fopen(filename, "r");
if (file == NULL)
sysdie("can't open %s", filename);
line = 0;
while (fgets(buffer, sizeof(buffer), file)) {
line++;
length = strlen(buffer) - 1;
if (buffer[length] != '\n') {
fprintf(stderr, "%s:%u: line too long\n", filename, line);
exit(1);
}
buffer[length] = '\0';
/* Skip comments, leading spaces, and blank lines. */
testname = skip_whitespace(buffer);
if (strlen(testname) == 0)
continue;
if (testname[0] == '#')
continue;
/* Allocate the new testset structure. */
if (current == NULL)
current = listhead;
else {
current->next = xcalloc(1, sizeof(struct testlist));
current = current->next;
}
current->ts = xcalloc(1, sizeof(struct testset));
current->ts->plan = PLAN_INIT;
current->ts->file = xstrdup(testname);
}
fclose(file);
/* If there were no tests, current is still NULL. */
if (current == NULL) {
free(listhead);
return NULL;
}
/* Return the results. */
return listhead;
}
/*
* Build a list of tests from command line arguments. Takes the argv and argc
* representing the command line arguments and returns a newly allocated test
* list, or NULL if there were no tests. The caller is responsible for
* freeing.
*/
static struct testlist *
build_test_list(char *argv[], int argc)
{
int i;
struct testlist *listhead, *current;
/* Create the initial container list that will hold our results. */
listhead = xcalloc(1, sizeof(struct testlist));
current = NULL;
/* Walk the list of arguments and create test sets for them. */
for (i = 0; i < argc; i++) {
if (current == NULL)
current = listhead;
else {
current->next = xcalloc(1, sizeof(struct testlist));
current = current->next;
}
current->ts = xcalloc(1, sizeof(struct testset));
current->ts->plan = PLAN_INIT;
current->ts->file = xstrdup(argv[i]);
}
/* If there were no tests, current is still NULL. */
if (current == NULL) {
free(listhead);
return NULL;
}
/* Return the results. */
return listhead;
}
/* Free a struct testset. */
static void
free_testset(struct testset *ts)
{
free(ts->file);
free(ts->path);
free(ts->results);
free(ts->reason);
free(ts);
}
/*
* Run a batch of tests. Takes two additional parameters: the root of the
* source directory and the root of the build directory. Test programs will
* be first searched for in the current directory, then the build directory,
* then the source directory. Returns true iff all tests passed, and always
* frees the test list that's passed in.
*/
static int
test_batch(struct testlist *tests, const char *source, const char *build,
enum test_verbose verbose)
{
size_t length, i;
size_t longest = 0;
unsigned int count = 0;
struct testset *ts;
struct timeval start, end;
struct rusage stats;
struct testlist *failhead = NULL;
struct testlist *failtail = NULL;
struct testlist *current, *next;
int succeeded;
unsigned long total = 0;
unsigned long passed = 0;
unsigned long skipped = 0;
unsigned long failed = 0;
unsigned long aborted = 0;
/* Walk the list of tests to find the longest name. */
for (current = tests; current != NULL; current = current->next) {
length = strlen(current->ts->file);
if (length > longest)
longest = length;
}
/*
* Add two to longest and round up to the nearest tab stop. This is how
* wide the column for printing the current test name will be.
*/
longest += 2;
if (longest % 8)
longest += 8 - (longest % 8);
/* Start the wall clock timer. */
gettimeofday(&start, NULL);
/* Now, plow through our tests again, running each one. */
for (current = tests; current != NULL; current = current->next) {
ts = current->ts;
/* Print out the name of the test file. */
fputs(ts->file, stdout);
if (verbose)
fputs("\n\n", stdout);
else
for (i = strlen(ts->file); i < longest; i++)
putchar('.');
if (isatty(STDOUT_FILENO))
fflush(stdout);
/* Run the test. */
ts->path = find_test(ts->file, source, build);
succeeded = test_run(ts, verbose);
fflush(stdout);
if (verbose)
putchar('\n');
/* Record cumulative statistics. */
aborted += ts->aborted;
total += ts->count + ts->all_skipped;
passed += ts->passed;
skipped += ts->skipped + ts->all_skipped;
failed += ts->failed;
count++;
/* If the test fails, we shuffle it over to the fail list. */
if (!succeeded) {
if (failhead == NULL) {
failhead = xmalloc(sizeof(struct testset));
failtail = failhead;
} else {
failtail->next = xmalloc(sizeof(struct testset));
failtail = failtail->next;
}
failtail->ts = ts;
failtail->next = NULL;
}
}
total -= skipped;
/* Stop the timer and get our child resource statistics. */
gettimeofday(&end, NULL);
getrusage(RUSAGE_CHILDREN, &stats);
/* Summarize the failures and free the failure list. */
if (failhead != NULL) {
test_fail_summary(failhead);
while (failhead != NULL) {
next = failhead->next;
free(failhead);
failhead = next;
}
}
/* Free the memory used by the test lists. */
while (tests != NULL) {
next = tests->next;
free_testset(tests->ts);
free(tests);
tests = next;
}
/* Print out the final test summary. */
putchar('\n');
if (aborted != 0) {
if (aborted == 1)
printf("Aborted %lu test set", aborted);
else
printf("Aborted %lu test sets", aborted);
printf(", passed %lu/%lu tests", passed, total);
}
else if (failed == 0)
fputs("All tests successful", stdout);
else
printf("Failed %lu/%lu tests, %.2f%% okay", failed, total,
(total - failed) * 100.0 / total);
if (skipped != 0) {
if (skipped == 1)
printf(", %lu test skipped", skipped);
else
printf(", %lu tests skipped", skipped);
}
puts(".");
printf("Files=%u, Tests=%lu", count, total);
printf(", %.2f seconds", tv_diff(&end, &start));
printf(" (%.2f usr + %.2f sys = %.2f CPU)\n",
tv_seconds(&stats.ru_utime), tv_seconds(&stats.ru_stime),
tv_sum(&stats.ru_utime, &stats.ru_stime));
return (failed == 0 && aborted == 0);
}
/*
* Run a single test case. This involves just running the test program after
* having done the environment setup and finding the test program.
*/
static void
test_single(const char *program, const char *source, const char *build)
{
char *path;
path = find_test(program, source, build);
if (execl(path, path, (char *) 0) == -1)
sysdie("cannot exec %s", path);
}
/*
* Main routine. Set the C_TAP_SOURCE, C_TAP_BUILD, SOURCE, and BUILD
* environment variables and then, given a file listing tests, run each test
* listed.
*/
int
main(int argc, char *argv[])
{
int option;
int status = 0;
int single = 0;
enum test_verbose verbose = CONCISE;
char *c_tap_source_env = NULL;
char *c_tap_build_env = NULL;
char *source_env = NULL;
char *build_env = NULL;
const char *program;
const char *shortlist;
const char *list = NULL;
const char *source = C_TAP_SOURCE;
const char *build = C_TAP_BUILD;
struct testlist *tests;
program = argv[0];
while ((option = getopt(argc, argv, "b:hl:os:v")) != EOF) {
switch (option) {
case 'b':
build = optarg;
break;
case 'h':
printf(usage_message, program, program, program, usage_extra);
exit(0);
case 'l':
list = optarg;
break;
case 'o':
single = 1;
break;
case 's':
source = optarg;
break;
case 'v':
verbose = VERBOSE;
break;
default:
exit(1);
}
}
argv += optind;
argc -= optind;
if ((list == NULL && argc < 1) || (list != NULL && argc > 0)) {
fprintf(stderr, usage_message, program, program, program, usage_extra);
exit(1);
}
/*
* If C_TAP_VERBOSE is set in the environment, that also turns on verbose
* mode.
*/
if (getenv("C_TAP_VERBOSE") != NULL)
verbose = VERBOSE;
/*
* Set C_TAP_SOURCE and C_TAP_BUILD environment variables. Also set
* SOURCE and BUILD for backward compatibility, although we're trying to
* migrate to the ones with a C_TAP_* prefix.
*/
if (source != NULL) {
c_tap_source_env = concat("C_TAP_SOURCE=", source, (const char *) 0);
if (putenv(c_tap_source_env) != 0)
sysdie("cannot set C_TAP_SOURCE in the environment");
source_env = concat("SOURCE=", source, (const char *) 0);
if (putenv(source_env) != 0)
sysdie("cannot set SOURCE in the environment");
}
if (build != NULL) {
c_tap_build_env = concat("C_TAP_BUILD=", build, (const char *) 0);
if (putenv(c_tap_build_env) != 0)
sysdie("cannot set C_TAP_BUILD in the environment");
build_env = concat("BUILD=", build, (const char *) 0);
if (putenv(build_env) != 0)
sysdie("cannot set BUILD in the environment");
}
/* Run the tests as instructed. */
if (single)
test_single(argv[0], source, build);
else if (list != NULL) {
shortlist = strrchr(list, '/');
if (shortlist == NULL)
shortlist = list;
else
shortlist++;
printf(banner, shortlist);
tests = read_test_list(list);
status = test_batch(tests, source, build, verbose) ? 0 : 1;
} else {
tests = build_test_list(argv, argc);
status = test_batch(tests, source, build, verbose) ? 0 : 1;
}
/* For valgrind cleanliness, free all our memory. */
if (source_env != NULL) {
putenv((char *) "C_TAP_SOURCE=");
putenv((char *) "SOURCE=");
free(c_tap_source_env);
free(source_env);
}
if (build_env != NULL) {
putenv((char *) "C_TAP_BUILD=");
putenv((char *) "BUILD=");
free(c_tap_build_env);
free(build_env);
}
exit(status);
}
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