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fish_tests.cpp
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// Various bug and feature tests. Compiled and run by make test.
#include "config.h" // IWYU pragma: keep
// IWYU pragma: no_include <cstring>
// IWYU pragma: no_include <cstddef>
#include <errno.h>
#include <libgen.h>
#include <limits.h>
#include <pthread.h>
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include <wchar.h>
#include <wctype.h>
#include <algorithm>
#include <array>
#include <atomic>
#include <functional>
#include <memory>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include "builtin.h"
#include "color.h"
#include "common.h"
#include "complete.h"
#include "env.h"
#include "env_universal_common.h"
#include "event.h"
#include "expand.h"
#include "fallback.h" // IWYU pragma: keep
#include "function.h"
#include "highlight.h"
#include "history.h"
#include "input.h"
#include "input_common.h"
#include "io.h"
#include "iothread.h"
#include "lru.h"
#include "maybe.h"
#include "pager.h"
#include "parse_constants.h"
#include "parse_tree.h"
#include "parse_util.h"
#include "parser.h"
#include "path.h"
#include "proc.h"
#include "reader.h"
#include "screen.h"
#include "signal.h"
#include "tnode.h"
#include "tokenizer.h"
#include "utf8.h"
#include "util.h"
#include "wcstringutil.h"
#include "wildcard.h"
#include "wutil.h" // IWYU pragma: keep
static const char *const *s_arguments;
static int s_test_run_count = 0;
// Indicate if we should test the given function. Either we test everything (all arguments) or we
// run only tests that have a prefix in s_arguments.
static bool should_test_function(const char *func_name) {
// No args, test everything.
bool result = false;
if (!s_arguments || !s_arguments[0]) {
result = true;
} else {
for (size_t i = 0; s_arguments[i] != NULL; i++) {
if (!strncmp(func_name, s_arguments[i], strlen(s_arguments[i]))) {
// Prefix match.
result = true;
break;
}
}
}
if (result) s_test_run_count++;
return result;
}
/// The number of tests to run.
#define ESCAPE_TEST_COUNT 100000
/// The average length of strings to unescape.
#define ESCAPE_TEST_LENGTH 100
/// The higest character number of character to try and escape.
#define ESCAPE_TEST_CHAR 4000
/// Number of encountered errors.
static int err_count = 0;
/// Print formatted output.
static void say(const wchar_t *fmt, ...) {
va_list va;
va_start(va, fmt);
vfwprintf(stdout, fmt, va);
va_end(va);
fwprintf(stdout, L"\n");
}
/// Print formatted error string.
static void err(const wchar_t *blah, ...) {
va_list va;
va_start(va, blah);
err_count++;
// Xcode's term doesn't support color (even though TERM claims it does).
bool colorize = !getenv("RUNNING_IN_XCODE");
// Show errors in red.
if (colorize) {
fputws(L"\e[31m", stdout);
}
fwprintf(stdout, L"Error: ");
vfwprintf(stdout, blah, va);
va_end(va);
// Return to normal color.
if (colorize) {
fputws(L"\e[0m", stdout);
}
fwprintf(stdout, L"\n");
}
/// Joins a wcstring_list_t via commas.
static wcstring comma_join(const wcstring_list_t &lst) {
wcstring result;
for (size_t i = 0; i < lst.size(); i++) {
if (i > 0) {
result.push_back(L',');
}
result.append(lst.at(i));
}
return result;
}
static std::vector<const char *> pushed_dirs;
/// Helper to chdir and then update $PWD.
static bool pushd(const char *path) {
char cwd[PATH_MAX] = {};
if (getcwd(cwd, sizeof cwd) == NULL) {
err(L"getcwd() from pushd() failed: errno = %d", errno);
return false;
}
pushed_dirs.push_back(strdup(cwd));
// We might need to create the directory. We don't care if this fails due to the directory
// already being present.
mkdir(path, 0770);
int ret = chdir(path);
if (ret != 0) {
err(L"chdir(\"%s\") from pushd() failed: errno = %d", path, errno);
return false;
}
env_set_pwd();
return true;
}
static void popd() {
const char *old_cwd = pushed_dirs.back();
if (chdir(old_cwd) == -1) {
err(L"chdir(\"%s\") from popd() failed: errno = %d", old_cwd, errno);
}
free((void *)old_cwd);
pushed_dirs.pop_back();
env_set_pwd();
}
// The odd formulation of these macros is to avoid "multiple unary operator" warnings from oclint
// were we to use the more natural "if (!(e)) err(..." form. We have to do this because the rules
// for the C preprocessor make it practically impossible to embed a comment in the body of a macro.
#define do_test(e) \
do { \
if (e) { \
; \
} else { \
err(L"Test failed on line %lu: %s", __LINE__, #e); \
} \
} while (0)
#define do_test_from(e, from) \
do { \
if (e) { \
; \
} else { \
err(L"Test failed on line %lu (from %lu): %s", __LINE__, from, #e); \
} \
} while (0)
#define do_test1(e, msg) \
do { \
if (e) { \
; \
} else { \
err(L"Test failed on line %lu: %ls", __LINE__, (msg)); \
} \
} while (0)
/// Test that the fish functions for converting strings to numbers work.
static void test_str_to_num() {
say(L"Testing str_to_num");
const wchar_t *end;
int i;
long l;
i = fish_wcstoi(L"");
do_test1(errno == EINVAL && i == 0, L"converting empty string to int did not fail");
i = fish_wcstoi(L" \n ");
do_test1(errno == EINVAL && i == 0, L"converting whitespace string to int did not fail");
i = fish_wcstoi(L"123");
do_test1(errno == 0 && i == 123, L"converting valid num to int did not succeed");
i = fish_wcstoi(L"-123");
do_test1(errno == 0 && i == -123, L"converting valid num to int did not succeed");
i = fish_wcstoi(L" 345 ");
do_test1(errno == 0 && i == 345, L"converting valid num to int did not succeed");
i = fish_wcstoi(L" -345 ");
do_test1(errno == 0 && i == -345, L"converting valid num to int did not succeed");
i = fish_wcstoi(L"x345");
do_test1(errno == EINVAL && i == 0, L"converting invalid num to int did not fail");
i = fish_wcstoi(L" x345");
do_test1(errno == EINVAL && i == 0, L"converting invalid num to int did not fail");
i = fish_wcstoi(L"456 x");
do_test1(errno == -1 && i == 456, L"converting invalid num to int did not fail");
i = fish_wcstoi(L"99999999999999999999999");
do_test1(errno == ERANGE && i == INT_MAX, L"converting invalid num to int did not fail");
i = fish_wcstoi(L"-99999999999999999999999");
do_test1(errno == ERANGE && i == INT_MIN, L"converting invalid num to int did not fail");
i = fish_wcstoi(L"567]", &end);
do_test1(errno == -1 && i == 567 && *end == L']',
L"converting valid num to int did not succeed");
// This is subtle. "567" in base 8 is "375" in base 10. The final "8" is not converted.
i = fish_wcstoi(L"5678", &end, 8);
do_test1(errno == -1 && i == 375 && *end == L'8',
L"converting invalid num to int did not fail");
l = fish_wcstol(L"");
do_test1(errno == EINVAL && l == 0, L"converting empty string to long did not fail");
l = fish_wcstol(L" \t ");
do_test1(errno == EINVAL && l == 0, L"converting whitespace string to long did not fail");
l = fish_wcstol(L"123");
do_test1(errno == 0 && l == 123, L"converting valid num to long did not succeed");
l = fish_wcstol(L"-123");
do_test1(errno == 0 && l == -123, L"converting valid num to long did not succeed");
l = fish_wcstol(L" 345 ");
do_test1(errno == 0 && l == 345, L"converting valid num to long did not succeed");
l = fish_wcstol(L" -345 ");
do_test1(errno == 0 && l == -345, L"converting valid num to long did not succeed");
l = fish_wcstol(L"x345");
do_test1(errno == EINVAL && l == 0, L"converting invalid num to long did not fail");
l = fish_wcstol(L" x345");
do_test1(errno == EINVAL && l == 0, L"converting invalid num to long did not fail");
l = fish_wcstol(L"456 x");
do_test1(errno == -1 && l == 456, L"converting invalid num to long did not fail");
l = fish_wcstol(L"99999999999999999999999");
do_test1(errno == ERANGE && l == LONG_MAX, L"converting invalid num to long did not fail");
l = fish_wcstol(L"-99999999999999999999999");
do_test1(errno == ERANGE && l == LONG_MIN, L"converting invalid num to long did not fail");
l = fish_wcstol(L"567]", &end);
do_test1(errno == -1 && l == 567 && *end == L']',
L"converting valid num to long did not succeed");
// This is subtle. "567" in base 8 is "375" in base 10. The final "8" is not converted.
l = fish_wcstol(L"5678", &end, 8);
do_test1(errno == -1 && l == 375 && *end == L'8',
L"converting invalid num to long did not fail");
}
/// Test sane escapes.
static void test_unescape_sane() {
const struct test_t {
const wchar_t *input;
const wchar_t *expected;
} tests[] = {
{L"abcd", L"abcd"}, {L"'abcd'", L"abcd"},
{L"'abcd\\n'", L"abcd\\n"}, {L"\"abcd\\n\"", L"abcd\\n"},
{L"\"abcd\\n\"", L"abcd\\n"}, {L"\\143", L"c"},
{L"'\\143'", L"\\143"}, {L"\\n", L"\n"} // \n normally becomes newline
};
wcstring output;
for (size_t i = 0; i < sizeof tests / sizeof *tests; i++) {
bool ret = unescape_string(tests[i].input, &output, UNESCAPE_DEFAULT);
if (!ret) {
err(L"Failed to unescape '%ls'\n", tests[i].input);
} else if (output != tests[i].expected) {
err(L"In unescaping '%ls', expected '%ls' but got '%ls'\n", tests[i].input,
tests[i].expected, output.c_str());
}
}
// Test for overflow.
if (unescape_string(L"echo \\UFFFFFF", &output, UNESCAPE_DEFAULT)) {
err(L"Should not have been able to unescape \\UFFFFFF\n");
}
if (unescape_string(L"echo \\U110000", &output, UNESCAPE_DEFAULT)) {
err(L"Should not have been able to unescape \\U110000\n");
}
#if WCHAR_MAX != 0xffff
// TODO: Make this work on MS Windows.
if (!unescape_string(L"echo \\U10FFFF", &output, UNESCAPE_DEFAULT)) {
err(L"Should have been able to unescape \\U10FFFF\n");
}
#endif
}
/// Test the escaping/unescaping code by escaping/unescaping random strings and verifying that the
/// original string comes back.
static void test_escape_crazy() {
say(L"Testing escaping and unescaping");
wcstring random_string;
wcstring escaped_string;
wcstring unescaped_string;
bool unescaped_success;
for (size_t i = 0; i < ESCAPE_TEST_COUNT; i++) {
random_string.clear();
while (rand() % ESCAPE_TEST_LENGTH) {
random_string.push_back((rand() % ESCAPE_TEST_CHAR) + 1);
}
escaped_string = escape_string(random_string, ESCAPE_ALL);
unescaped_success = unescape_string(escaped_string, &unescaped_string, UNESCAPE_DEFAULT);
if (!unescaped_success) {
err(L"Failed to unescape string <%ls>", escaped_string.c_str());
} else if (unescaped_string != random_string) {
err(L"Escaped and then unescaped string '%ls', but got back a different string '%ls'",
random_string.c_str(), unescaped_string.c_str());
}
}
// Verify that not using `ESCAPE_ALL` also escapes backslashes so we don't regress on issue
// #3892.
random_string = L"line 1\\n\nline 2";
escaped_string = escape_string(random_string, ESCAPE_NO_QUOTED);
unescaped_success = unescape_string(escaped_string, &unescaped_string, UNESCAPE_DEFAULT);
if (!unescaped_success) {
err(L"Failed to unescape string <%ls>", escaped_string.c_str());
} else if (unescaped_string != random_string) {
err(L"Escaped and then unescaped string '%ls', but got back a different string '%ls'",
random_string.c_str(), unescaped_string.c_str());
}
}
static void test_escape_quotes() {
say(L"Testing escaping with quotes");
// These are "raw string literals"
do_test(parse_util_escape_string_with_quote(L"abc", L'\0') == L"abc");
do_test(parse_util_escape_string_with_quote(L"abc~def", L'\0') == L"abc\\~def");
do_test(parse_util_escape_string_with_quote(L"abc~def", L'\0', true) == L"abc~def");
do_test(parse_util_escape_string_with_quote(L"abc\\~def", L'\0') == L"abc\\\\\\~def");
do_test(parse_util_escape_string_with_quote(L"abc\\~def", L'\0', true) == L"abc\\\\~def");
do_test(parse_util_escape_string_with_quote(L"~abc", L'\0') == L"\\~abc");
do_test(parse_util_escape_string_with_quote(L"~abc", L'\0', true) == L"~abc");
do_test(parse_util_escape_string_with_quote(L"~abc|def", L'\0') == L"\\~abc\\|def");
do_test(parse_util_escape_string_with_quote(L"|abc~def", L'\0') == L"\\|abc\\~def");
do_test(parse_util_escape_string_with_quote(L"|abc~def", L'\0', true) == L"\\|abc~def");
do_test(parse_util_escape_string_with_quote(L"foo\nbar", L'\0') == L"foo\\nbar");
// Note tildes are not expanded inside quotes, so no_tilde is ignored with a quote.
do_test(parse_util_escape_string_with_quote(L"abc", L'\'') == L"abc");
do_test(parse_util_escape_string_with_quote(L"abc\\def", L'\'') == L"abc\\\\def");
do_test(parse_util_escape_string_with_quote(L"abc'def", L'\'') == L"abc\\'def");
do_test(parse_util_escape_string_with_quote(L"~abc'def", L'\'') == L"~abc\\'def");
do_test(parse_util_escape_string_with_quote(L"~abc'def", L'\'', true) == L"~abc\\'def");
do_test(parse_util_escape_string_with_quote(L"foo\nba'r", L'\'') == L"foo'\\n'ba\\'r");
do_test(parse_util_escape_string_with_quote(L"foo\\\\bar", L'\'') == L"foo\\\\\\\\bar");
do_test(parse_util_escape_string_with_quote(L"abc", L'"') == L"abc");
do_test(parse_util_escape_string_with_quote(L"abc\\def", L'"') == L"abc\\\\def");
do_test(parse_util_escape_string_with_quote(L"~abc'def", L'"') == L"~abc'def");
do_test(parse_util_escape_string_with_quote(L"~abc'def", L'"', true) == L"~abc'def");
do_test(parse_util_escape_string_with_quote(L"foo\nba'r", L'"') == L"foo\"\\n\"ba'r");
do_test(parse_util_escape_string_with_quote(L"foo\\\\bar", L'"') == L"foo\\\\\\\\bar");
}
static void test_format() {
say(L"Testing formatting functions");
struct {
unsigned long long val;
const char *expected;
} tests[] = {{0, "empty"}, {1, "1B"}, {2, "2B"},
{1024, "1kB"}, {1870, "1.8kB"}, {4322911, "4.1MB"}};
size_t i;
for (i = 0; i < sizeof tests / sizeof *tests; i++) {
char buff[128];
format_size_safe(buff, tests[i].val);
do_test(!strcmp(buff, tests[i].expected));
}
for (int j = -129; j <= 129; j++) {
char buff1[128], buff2[128];
format_long_safe(buff1, j);
sprintf(buff2, "%d", j);
do_test(!strcmp(buff1, buff2));
wchar_t wbuf1[128], wbuf2[128];
format_long_safe(wbuf1, j);
swprintf(wbuf2, 128, L"%d", j);
do_test(!wcscmp(wbuf1, wbuf2));
}
long q = LONG_MIN;
char buff1[128], buff2[128];
format_long_safe(buff1, q);
sprintf(buff2, "%ld", q);
do_test(!strcmp(buff1, buff2));
}
/// Helper to convert a narrow string to a sequence of hex digits.
static char *str2hex(const char *input) {
char *output = (char *)malloc(5 * strlen(input) + 1);
char *p = output;
for (; *input; input++) {
sprintf(p, "0x%02X ", (int)*input & 0xFF);
p += 5;
}
*p = '\0';
return output;
}
/// Test wide/narrow conversion by creating random strings and verifying that the original string
/// comes back through double conversion.
static void test_convert() {
int i;
std::vector<char> sb;
say(L"Testing wide/narrow string conversion");
for (i = 0; i < ESCAPE_TEST_COUNT; i++) {
const char *o, *n;
char c;
sb.clear();
while (rand() % ESCAPE_TEST_LENGTH) {
c = rand();
sb.push_back(c);
}
c = 0;
sb.push_back(c);
o = &sb.at(0);
const wcstring w = str2wcstring(o);
n = wcs2str(w);
if (!o || !n) {
err(L"Line %d - Conversion cycle of string %s produced null pointer on %s", __LINE__, o,
L"wcs2str");
}
if (strcmp(o, n)) {
char *o2 = str2hex(o);
char *n2 = str2hex(n);
err(L"Line %d - %d: Conversion cycle of string:\n%4d chars: %s\n"
L"produced different string:\n%4d chars: %s",
__LINE__, i, strlen(o), o2, strlen(n), n2);
free(o2);
free(n2);
}
free((void *)n);
}
}
/// Verify correct behavior with embedded nulls.
static void test_convert_nulls() {
say(L"Testing convert_nulls");
const wchar_t in[] = L"AAA\0BBB";
const size_t in_len = (sizeof in / sizeof *in) - 1;
const wcstring in_str = wcstring(in, in_len);
std::string out_str = wcs2string(in_str);
if (out_str.size() != in_len) {
err(L"Embedded nulls mishandled in wcs2string");
}
for (size_t i = 0; i < in_len; i++) {
if (in[i] != out_str.at(i)) {
err(L"Embedded nulls mishandled in wcs2string at index %lu", (unsigned long)i);
}
}
wcstring out_wstr = str2wcstring(out_str);
if (out_wstr.size() != in_len) {
err(L"Embedded nulls mishandled in str2wcstring");
}
for (size_t i = 0; i < in_len; i++) {
if (in[i] != out_wstr.at(i)) {
err(L"Embedded nulls mishandled in str2wcstring at index %lu", (unsigned long)i);
}
}
}
/// Test the tokenizer.
static void test_tokenizer() {
say(L"Testing tokenizer");
tok_t token;
{
bool got = false;
const wchar_t *str = L"alpha beta";
tokenizer_t t(str, 0);
got = t.next(&token); // alpha
do_test(got);
do_test(token.type == TOK_STRING);
do_test(token.offset == 0);
do_test(token.length == 5);
do_test(t.text_of(token) == L"alpha");
got = t.next(&token); // beta
do_test(got);
do_test(token.type == TOK_STRING);
do_test(token.offset == 6);
do_test(token.length == 4);
do_test(t.text_of(token) == L"beta");
got = t.next(&token);
do_test(!got);
}
const wchar_t *str =
L"string <redirection 2>&1 'nested \"quoted\" '(string containing subshells "
L"){and,brackets}$as[$well (as variable arrays)] not_a_redirect^ ^ ^^is_a_redirect "
L"&&& ||| "
L"&& || & |"
L"Compress_Newlines\n \n\t\n \nInto_Just_One";
const int types[] = {TOK_STRING, TOK_REDIRECT, TOK_STRING, TOK_REDIRECT, TOK_STRING,
TOK_STRING, TOK_STRING, TOK_REDIRECT, TOK_REDIRECT, TOK_STRING,
TOK_ANDAND, TOK_BACKGROUND, TOK_OROR, TOK_PIPE, TOK_ANDAND,
TOK_OROR, TOK_BACKGROUND, TOK_PIPE, TOK_STRING, TOK_END,
TOK_STRING};
say(L"Test correct tokenization");
{
tokenizer_t t(str, 0);
size_t i = 0;
while (t.next(&token)) {
if (i >= sizeof types / sizeof *types) {
err(L"Too many tokens returned from tokenizer");
fwprintf(stdout, L"Got excess token type %ld\n", (long)token.type);
break;
}
if (types[i] != token.type) {
err(L"Tokenization error:");
fwprintf(stdout,
L"Token number %zu of string \n'%ls'\n, expected type %ld, got token type "
L"%ld\n",
i + 1, str, (long)types[i], (long)token.type);
}
i++;
}
if (i < sizeof types / sizeof *types) {
err(L"Too few tokens returned from tokenizer");
}
}
// Test some errors.
{
tokenizer_t t(L"abc\\", 0);
do_test(t.next(&token));
do_test(token.type == TOK_ERROR);
do_test(token.error == TOK_UNTERMINATED_ESCAPE);
do_test(token.error_offset == 3);
}
{
tokenizer_t t(L"abc )defg(hij", 0);
do_test(t.next(&token));
do_test(t.next(&token));
do_test(token.type == TOK_ERROR);
do_test(token.error == TOK_CLOSING_UNOPENED_SUBSHELL);
do_test(token.error_offset == 4);
}
{
tokenizer_t t(L"abc defg(hij (klm)", 0);
do_test(t.next(&token));
do_test(t.next(&token));
do_test(token.type == TOK_ERROR);
do_test(token.error == TOK_UNTERMINATED_SUBSHELL);
do_test(token.error_offset == 4);
}
{
tokenizer_t t(L"abc defg[hij (klm)", 0);
do_test(t.next(&token));
do_test(t.next(&token));
do_test(token.type == TOK_ERROR);
do_test(token.error == TOK_UNTERMINATED_SLICE);
do_test(token.error_offset == 4);
}
// Test redirection_type_for_string.
if (redirection_type_for_string(L"<") != redirection_type_t::input)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"^") != redirection_type_t::overwrite)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L">") != redirection_type_t::overwrite)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>") != redirection_type_t::overwrite)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L">>") != redirection_type_t::append)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>>") != redirection_type_t::append)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>?") != redirection_type_t::noclob)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"9999999999999999>?"))
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>&3") != redirection_type_t::fd)
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>|"))
err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
}
// Little function that runs in a background thread, bouncing to the main.
static int test_iothread_thread_call(std::atomic<int> *addr) {
int before = *addr;
iothread_perform_on_main([=]() { *addr += 1; });
int after = *addr;
// Must have incremented it at least once.
if (before >= after) {
err(L"Failed to increment from background thread");
}
return after;
}
static void test_iothread() {
say(L"Testing iothreads");
std::unique_ptr<std::atomic<int>> int_ptr = make_unique<std::atomic<int>>(0);
int iterations = 50000;
int max_achieved_thread_count = 0;
double start = timef();
for (int i = 0; i < iterations; i++) {
int thread_count = iothread_perform([&]() { test_iothread_thread_call(int_ptr.get()); });
max_achieved_thread_count = std::max(max_achieved_thread_count, thread_count);
}
// Now wait until we're done.
iothread_drain_all();
double end = timef();
// Should have incremented it once per thread.
if (*int_ptr != iterations) {
say(L"Expected int to be %d, but instead it was %d", iterations, int_ptr->load());
}
say(L" (%.02f msec, with max of %d threads)", (end - start) * 1000.0,
max_achieved_thread_count);
}
static parser_test_error_bits_t detect_argument_errors(const wcstring &src) {
parse_node_tree_t tree;
if (!parse_tree_from_string(src, parse_flag_none, &tree, NULL, symbol_argument_list)) {
return PARSER_TEST_ERROR;
}
assert(!tree.empty()); //!OCLINT(multiple unary operator)
tnode_t<grammar::argument_list> arg_list{&tree, &tree.at(0)};
auto first_arg = arg_list.next_in_list<grammar::argument>();
return parse_util_detect_errors_in_argument(first_arg, first_arg.get_source(src));
}
/// Test the parser.
static void test_parser() {
say(L"Testing parser");
say(L"Testing block nesting");
if (!parse_util_detect_errors(L"if; end")) {
err(L"Incomplete if statement undetected");
}
if (!parse_util_detect_errors(L"if test; echo")) {
err(L"Missing end undetected");
}
if (!parse_util_detect_errors(L"if test; end; end")) {
err(L"Unbalanced end undetected");
}
say(L"Testing detection of invalid use of builtin commands");
if (!parse_util_detect_errors(L"case foo")) {
err(L"'case' command outside of block context undetected");
}
if (!parse_util_detect_errors(L"switch ggg; if true; case foo;end;end")) {
err(L"'case' command outside of switch block context undetected");
}
if (!parse_util_detect_errors(L"else")) {
err(L"'else' command outside of conditional block context undetected");
}
if (!parse_util_detect_errors(L"else if")) {
err(L"'else if' command outside of conditional block context undetected");
}
if (!parse_util_detect_errors(L"if false; else if; end")) {
err(L"'else if' missing command undetected");
}
if (!parse_util_detect_errors(L"break")) {
err(L"'break' command outside of loop block context undetected");
}
if (parse_util_detect_errors(L"break --help")) {
err(L"'break --help' incorrectly marked as error");
}
if (!parse_util_detect_errors(L"while false ; function foo ; break ; end ; end ")) {
err(L"'break' command inside function allowed to break from loop outside it");
}
if (!parse_util_detect_errors(L"exec ls|less") || !parse_util_detect_errors(L"echo|return")) {
err(L"Invalid pipe command undetected");
}
if (parse_util_detect_errors(L"for i in foo ; switch $i ; case blah ; break; end; end ")) {
err(L"'break' command inside switch falsely reported as error");
}
if (parse_util_detect_errors(L"or cat | cat") || parse_util_detect_errors(L"and cat | cat")) {
err(L"boolean command at beginning of pipeline falsely reported as error");
}
if (!parse_util_detect_errors(L"cat | and cat")) {
err(L"'and' command in pipeline not reported as error");
}
if (!parse_util_detect_errors(L"cat | or cat")) {
err(L"'or' command in pipeline not reported as error");
}
if (!parse_util_detect_errors(L"cat | exec") || !parse_util_detect_errors(L"exec | cat")) {
err(L"'exec' command in pipeline not reported as error");
}
if (!parse_util_detect_errors(L"begin ; end arg")) {
err(L"argument to 'end' not reported as error");
}
if (!parse_util_detect_errors(L"switch foo ; end arg")) {
err(L"argument to 'end' not reported as error");
}
if (!parse_util_detect_errors(L"if true; else if false ; end arg")) {
err(L"argument to 'end' not reported as error");
}
if (!parse_util_detect_errors(L"if true; else ; end arg")) {
err(L"argument to 'end' not reported as error");
}
if (parse_util_detect_errors(L"begin ; end 2> /dev/null")) {
err(L"redirection after 'end' wrongly reported as error");
}
if (parse_util_detect_errors(L"true | ") != PARSER_TEST_INCOMPLETE) {
err(L"unterminated pipe not reported properly");
}
if (parse_util_detect_errors(L"begin ; true ; end | ") != PARSER_TEST_INCOMPLETE) {
err(L"unterminated pipe not reported properly");
}
if (parse_util_detect_errors(L" | true ") != PARSER_TEST_ERROR) {
err(L"leading pipe not reported properly");
}
if (parse_util_detect_errors(L"true | # comment") != PARSER_TEST_INCOMPLETE) {
err(L"comment after pipe not reported as incomplete");
}
if (parse_util_detect_errors(L"true | # comment \n false ")) {
err(L"comment and newline after pipe wrongly reported as error");
}
if (parse_util_detect_errors(L"true | ; false ") != PARSER_TEST_ERROR) {
err(L"semicolon after pipe not detected as error");
}
if (detect_argument_errors(L"foo")) {
err(L"simple argument reported as error");
}
if (detect_argument_errors(L"''")) {
err(L"Empty string reported as error");
}
if (!(detect_argument_errors(L"foo$$") & PARSER_TEST_ERROR)) {
err(L"Bad variable expansion not reported as error");
}
if (!(detect_argument_errors(L"foo$@") & PARSER_TEST_ERROR)) {
err(L"Bad variable expansion not reported as error");
}
// Within command substitutions, we should be able to detect everything that
// parse_util_detect_errors can detect.
if (!(detect_argument_errors(L"foo(cat | or cat)") & PARSER_TEST_ERROR)) {
err(L"Bad command substitution not reported as error");
}
if (!(detect_argument_errors(L"foo\\xFF9") & PARSER_TEST_ERROR)) {
err(L"Bad escape not reported as error");
}
if (!(detect_argument_errors(L"foo(echo \\xFF9)") & PARSER_TEST_ERROR)) {
err(L"Bad escape in command substitution not reported as error");
}
if (!(detect_argument_errors(L"foo(echo (echo (echo \\xFF9)))") & PARSER_TEST_ERROR)) {
err(L"Bad escape in nested command substitution not reported as error");
}
if (!parse_util_detect_errors(L"false & ; and cat")) {
err(L"'and' command after background not reported as error");
}
if (!parse_util_detect_errors(L"true & ; or cat")) {
err(L"'or' command after background not reported as error");
}
if (parse_util_detect_errors(L"true & ; not cat")) {
err(L"'not' command after background falsely reported as error");
}
if (!parse_util_detect_errors(L"if true & ; end")) {
err(L"backgrounded 'if' conditional not reported as error");
}
if (!parse_util_detect_errors(L"if false; else if true & ; end")) {
err(L"backgrounded 'else if' conditional not reported as error");
}
if (!parse_util_detect_errors(L"while true & ; end")) {
err(L"backgrounded 'while' conditional not reported as error");
}
if (!parse_util_detect_errors(L"true | || false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"|| false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"&& false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"true ; && false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"true ; || false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"true || && false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"true && || false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
if (!parse_util_detect_errors(L"true && && false")) {
err(L"bogus boolean statement error not detected on line %d", __LINE__);
}
say(L"Testing basic evaluation");
// Ensure that we don't crash on infinite self recursion and mutual recursion. These must use
// the principal parser because we cannot yet execute jobs on other parsers.
say(L"Testing recursion detection");
parser_t::principal_parser().eval(L"function recursive ; recursive ; end ; recursive; ",
io_chain_t(), TOP);
#if 0
// This is disabled since it produces a long backtrace. We should find a way to either visually
// compress the backtrace, or disable error spewing.
parser_t::principal_parser().eval(L"function recursive1 ; recursive2 ; end ; "
L"function recursive2 ; recursive1 ; end ; recursive1; ", io_chain_t(), TOP);
#endif
say(L"Testing empty function name");
parser_t::principal_parser().eval(L"function '' ; echo fail; exit 42 ; end ; ''", io_chain_t(),
TOP);
say(L"Testing eval_args");
completion_list_t comps;
parser_t::expand_argument_list(L"alpha 'beta gamma' delta", 0, &comps);
do_test(comps.size() == 3);
do_test(comps.at(0).completion == L"alpha");
do_test(comps.at(1).completion == L"beta gamma");
do_test(comps.at(2).completion == L"delta");
}
static void test_1_cancellation(const wchar_t *src) {
shared_ptr<io_buffer_t> out_buff(io_buffer_t::create(STDOUT_FILENO, io_chain_t()));
const io_chain_t io_chain(out_buff);
pthread_t thread = pthread_self();
double delay = 0.25 /* seconds */;
iothread_perform([=]() {
/// Wait a while and then SIGINT the main thread.
usleep(delay * 1E6);
pthread_kill(thread, SIGINT);
});
parser_t::principal_parser().eval(src, io_chain, TOP);
out_buff->read();
if (out_buff->out_buffer_size() != 0) {
err(L"Expected 0 bytes in out_buff, but instead found %lu bytes\n",
out_buff->out_buffer_size());
}
iothread_drain_all();
}
static void test_cancellation() {
if (getenv("RUNNING_IN_XCODE")) {
say(L"Skipping Ctrl-C cancellation test because we are running in Xcode debugger");
return;
}
say(L"Testing Ctrl-C cancellation. If this hangs, that's a bug!");
// Enable fish's signal handling here. We need to make this interactive for fish to install its
// signal handlers.
proc_push_interactive(1);
signal_set_handlers();
// This tests that we can correctly ctrl-C out of certain loop constructs, and that nothing gets
// printed if we do.
// Here the command substitution is an infinite loop. echo never even gets its argument, so when
// we cancel we expect no output.
test_1_cancellation(L"echo (while true ; echo blah ; end)");
// Nasty infinite loop that doesn't actually execute anything.
test_1_cancellation(L"echo (while true ; end) (while true ; end) (while true ; end)");
test_1_cancellation(L"while true ; end");
test_1_cancellation(L"while true ; echo nothing > /dev/null; end");
test_1_cancellation(L"for i in (while true ; end) ; end");
// Ensure that if child processes SIGINT, we exit our loops
// Test for #3780
// Ugly hack - temporarily set is_interactive_session
// else we will SIGINT ourselves in response to our child death
scoped_push<bool> iis(&is_interactive_session, true);
const wchar_t *child_self_destructor = L"while true ; sh -c 'sleep .25; kill -s INT $$' ; end";
parser_t::principal_parser().eval(child_self_destructor, io_chain_t(), TOP);
iis.restore();
// Restore signal handling.
proc_pop_interactive();
signal_reset_handlers();
// Ensure that we don't think we should cancel.
reader_reset_interrupted();
}
static void test_indents() {
say(L"Testing indents");
// Here are the components of our source and the indents we expect those to be.
struct indent_component_t {
const wchar_t *txt;
int indent;
};
const indent_component_t components1[] = {{L"if foo", 0}, {L"end", 0}, {NULL, -1}};
const indent_component_t components2[] = {{L"if foo", 0},
{L"", 1}, // trailing newline!
{NULL, -1}};
const indent_component_t components3[] = {{L"if foo", 0},
{L"foo", 1},
{L"end", 0}, // trailing newline!
{NULL, -1}};
const indent_component_t components4[] = {{L"if foo", 0}, {L"if bar", 1}, {L"end", 1},
{L"end", 0}, {L"", 0}, {NULL, -1}};
const indent_component_t components5[] = {{L"if foo", 0}, {L"if bar", 1}, {L"", 2}, {NULL, -1}};
const indent_component_t components6[] = {{L"begin", 0}, {L"foo", 1}, {L"", 1}, {NULL, -1}};
const indent_component_t components7[] = {{L"begin", 0}, {L";", 1}, {L"end", 0},
{L"foo", 0}, {L"", 0}, {NULL, -1}};
const indent_component_t components8[] = {{L"if foo", 0}, {L"if bar", 1}, {L"baz", 2},