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fish_tests.cpp
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fish_tests.cpp
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/** \file fish_tests.c
Various bug and feature tests. Compiled and run by make test.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <wchar.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <unistd.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <stdarg.h>
#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#include <signal.h>
#include <locale.h>
#include <dirent.h>
#include <time.h>
#include "fallback.h"
#include "util.h"
#include "common.h"
#include "proc.h"
#include "reader.h"
#include "builtin.h"
#include "function.h"
#include "autoload.h"
#include "complete.h"
#include "wutil.h"
#include "env.h"
#include "expand.h"
#include "parser.h"
#include "tokenizer.h"
#include "output.h"
#include "exec.h"
#include "event.h"
#include "path.h"
#include "history.h"
#include "highlight.h"
#include "iothread.h"
#include "postfork.h"
#include "signal.h"
#include "parse_tree.h"
#include "parse_util.h"
#include "pager.h"
#include "input.h"
#include "utf8.h"
#include "env_universal_common.h"
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 laps to run performance testing loop
*/
#define LAPS 50
/**
The result of one of the test passes
*/
#define NUM_ANS L"-7 99999999 1234567 deadbeef DEADBEEFDEADBEEF"
/**
Number of encountered errors
*/
static int err_count=0;
/**
Print formatted output
*/
static void say(const wchar_t *blah, ...)
{
va_list va;
va_start(va, blah);
vwprintf(blah, va);
va_end(va);
wprintf(L"\n");
}
/**
Print formatted error string
*/
static void err(const wchar_t *blah, ...)
{
va_list va;
va_start(va, blah);
err_count++;
// show errors in red
fputs("\x1b[31m", stdout);
wprintf(L"Error: ");
vwprintf(blah, va);
va_end(va);
// return to normal color
fputs("\x1b[0m", stdout);
wprintf(L"\n");
}
#define do_test(e) do { if (! (e)) err(L"Test failed on line %lu: %s", __LINE__, #e); } while (0)
/* 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 (! unescape_string(L"echo \\U10FFFF", &output, UNESCAPE_DEFAULT))
{
err(L"Should have been able to unescape \\U10FFFF\n");
}
}
/**
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;
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);
bool 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_format(void)
{
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));
}
long q = LONG_MIN;
char buff1[128], buff2[128];
format_long_safe(buff1, q);
sprintf(buff2, "%ld", q);
do_test(! strcmp(buff1, buff2));
}
/**
Test wide/narrow conversion by creating random strings and
verifying that the original string comes back thorugh double
conversion.
*/
static void test_convert()
{
/* char o[] =
{
-17, -128, -121, -68, 0
}
;
wchar_t *w = str2wcs(o);
char *n = wcs2str(w);
int i;
for( i=0; o[i]; i++ )
{
bitprint(o[i]);;
//wprintf(L"%d ", o[i]);
}
wprintf(L"\n");
for( i=0; w[i]; i++ )
{
wbitprint(w[i]);;
//wprintf(L"%d ", w[i]);
}
wprintf(L"\n");
for( i=0; n[i]; i++ )
{
bitprint(n[i]);;
//wprintf(L"%d ", n[i]);
}
wprintf(L"\n");
return;
*/
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.c_str());
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))
{
err(L"Line %d - %d: Conversion cycle of string %s produced different string %s", __LINE__, i, o, n);
}
free((void *)n);
}
}
/* Verify correct behavior with embedded nulls */
static void test_convert_nulls(void)
{
say(L"Testing embedded nulls in string conversion");
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_tok()
{
say(L"Testing tokenizer");
say(L"Testing invalid input");
tokenizer_t t(NULL, 0);
if (tok_last_type(&t) != TOK_ERROR)
{
err(L"Invalid input to tokenizer was undetected");
}
say(L"Testing use of broken tokenizer");
if (!tok_has_next(&t))
{
err(L"tok_has_next() should return 1 once on broken tokenizer");
}
tok_next(&t);
if (tok_last_type(&t) != TOK_ERROR)
{
err(L"Invalid input to tokenizer was undetected");
}
/*
This should crash if there is a bug. No reliable way to detect otherwise.
*/
say(L"Test destruction of broken tokenizer");
{
const wchar_t *str = L"string <redirection 2>&1 'nested \"quoted\" '(string containing subshells ){and,brackets}$as[$well (as variable arrays)] not_a_redirect^ ^ ^^is_a_redirect";
const int types[] =
{
TOK_STRING, TOK_REDIRECT_IN, TOK_STRING, TOK_REDIRECT_FD, TOK_STRING, TOK_STRING, TOK_STRING, TOK_REDIRECT_OUT, TOK_REDIRECT_APPEND, TOK_STRING, TOK_END
};
say(L"Test correct tokenization");
tokenizer_t t(str, 0);
for (size_t i=0; i < sizeof types / sizeof *types; i++, tok_next(&t))
{
if (types[i] != tok_last_type(&t))
{
err(L"Tokenization error:");
wprintf(L"Token number %d of string \n'%ls'\n, expected token type %ls, got token '%ls' of type %ls\n",
i+1,
str,
tok_get_desc(types[i]),
tok_last(&t),
tok_get_desc(tok_last_type(&t)));
}
}
}
/* Test redirection_type_for_string */
if (redirection_type_for_string(L"<") != TOK_REDIRECT_IN) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"^") != TOK_REDIRECT_OUT) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L">") != TOK_REDIRECT_OUT) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>") != TOK_REDIRECT_OUT) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L">>") != TOK_REDIRECT_APPEND) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>>") != TOK_REDIRECT_APPEND) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>?") != TOK_REDIRECT_NOCLOB) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"9999999999999999>?") != TOK_NONE) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>&3") != TOK_REDIRECT_FD) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
if (redirection_type_for_string(L"2>|") != TOK_NONE) err(L"redirection_type_for_string failed on line %ld", (long)__LINE__);
}
// Little function that runs in the main thread
static int test_iothread_main_call(int *addr)
{
*addr += 1;
return *addr;
}
// Little function that runs in a background thread, bouncing to the main
static int test_iothread_thread_call(int *addr)
{
int before = *addr;
iothread_perform_on_main(test_iothread_main_call, addr);
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(void)
{
say(L"Testing iothreads");
int *int_ptr = new 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, (void (*)(int *, int))NULL, int_ptr);
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);
}
say(L" (%.02f msec, with max of %d threads)", (end - start) * 1000.0, max_achieved_thread_count);
delete int_ptr;
}
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());
const parse_node_t *first_arg = tree.next_node_in_node_list(tree.at(0), symbol_argument, NULL);
assert(first_arg != NULL);
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");
parser_t parser(PARSER_TYPE_GENERAL, true);
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 (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");
}
say(L"Testing basic evaluation");
#if 0
/* This fails now since the parser takes a wcstring&, and NULL converts to wchar_t * converts to wcstring which crashes (thanks C++) */
if (!parser.eval(0, 0, TOP))
{
err(L"Null input when evaluating undetected");
}
#endif
if (!parser.eval(L"ls", io_chain_t(), WHILE))
{
err(L"Invalid block mode when evaluating undetected");
}
/* 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 ; 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::principal_parser().expand_argument_list(L"alpha 'beta gamma' delta", 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");
}
/* Wait a while and then SIGINT the main thread */
struct test_cancellation_info_t
{
pthread_t thread;
double delay;
};
static int signal_main(test_cancellation_info_t *info)
{
usleep(info->delay * 1E6);
pthread_kill(info->thread, SIGINT);
return 0;
}
static void test_1_cancellation(const wchar_t *src)
{
shared_ptr<io_buffer_t> out_buff(io_buffer_t::create(STDOUT_FILENO));
const io_chain_t io_chain(out_buff);
test_cancellation_info_t ctx = {pthread_self(), 0.25 /* seconds */ };
iothread_perform(signal_main, (void (*)(test_cancellation_info_t *, int))NULL, &ctx);
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()
{
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)");
fprintf(stderr, ".");
/* Nasty infinite loop that doesn't actually execute anything */
test_1_cancellation(L"echo (while true ; end) (while true ; end) (while true ; end)");
fprintf(stderr, ".");
test_1_cancellation(L"while true ; end");
fprintf(stderr, ".");
test_1_cancellation(L"for i in (while true ; end) ; end");
fprintf(stderr, ".");
fprintf(stderr, "\n");
/* 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; 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},
{L"end", 1},
{L"", 1},
{NULL, -1}
};
const indent_component_t components9[] =
{
{L"switch foo", 0},
{L"", 1},
{NULL, -1}
};
const indent_component_t components10[] =
{
{L"switch foo", 0},
{L"case bar", 1},
{L"case baz", 1},
{L"quux", 2},
{L"", 2},
{NULL, -1}
};
const indent_component_t components11[] =
{
{L"switch foo", 0},
{L"cas", 1}, //parse error indentation handling
{NULL, -1}
};
const indent_component_t *tests[] = {components1, components2, components3, components4, components5, components6, components7, components8, components9, components10, components11};
for (size_t which = 0; which < sizeof tests / sizeof *tests; which++)
{
const indent_component_t *components = tests[which];
// Count how many we have
size_t component_count = 0;
while (components[component_count].txt != NULL)
{
component_count++;
}
// Generate the expected indents
wcstring text;
std::vector<int> expected_indents;
for (size_t i=0; i < component_count; i++)
{
if (i > 0)
{
text.push_back(L'\n');
expected_indents.push_back(components[i].indent);
}
text.append(components[i].txt);
expected_indents.resize(text.size(), components[i].indent);
}
do_test(expected_indents.size() == text.size());
// Compute the indents
std::vector<int> indents = parse_util_compute_indents(text);
if (expected_indents.size() != indents.size())
{
err(L"Indent vector has wrong size! Expected %lu, actual %lu", expected_indents.size(), indents.size());
}
do_test(expected_indents.size() == indents.size());
for (size_t i=0; i < text.size(); i++)
{
if (expected_indents.at(i) != indents.at(i))
{
err(L"Wrong indent at index %lu in test #%lu (expected %d, actual %d):\n%ls\n", i, which + 1, expected_indents.at(i), indents.at(i), text.c_str());
break; //don't keep showing errors for the rest of the line
}
}
}
}
static void test_utils()
{
say(L"Testing utils");
const wchar_t *a = L"echo (echo (echo hi";
const wchar_t *begin = NULL, *end = NULL;
parse_util_cmdsubst_extent(a, 0, &begin, &end);
if (begin != a || end != begin + wcslen(begin)) err(L"parse_util_cmdsubst_extent failed on line %ld", (long)__LINE__);
parse_util_cmdsubst_extent(a, 1, &begin, &end);
if (begin != a || end != begin + wcslen(begin)) err(L"parse_util_cmdsubst_extent failed on line %ld", (long)__LINE__);
parse_util_cmdsubst_extent(a, 2, &begin, &end);
if (begin != a || end != begin + wcslen(begin)) err(L"parse_util_cmdsubst_extent failed on line %ld", (long)__LINE__);
parse_util_cmdsubst_extent(a, 3, &begin, &end);
if (begin != a || end != begin + wcslen(begin)) err(L"parse_util_cmdsubst_extent failed on line %ld", (long)__LINE__);
parse_util_cmdsubst_extent(a, 8, &begin, &end);
if (begin != a + wcslen(L"echo (")) err(L"parse_util_cmdsubst_extent failed on line %ld", (long)__LINE__);
parse_util_cmdsubst_extent(a, 17, &begin, &end);
if (begin != a + wcslen(L"echo (echo (")) err(L"parse_util_cmdsubst_extent failed on line %ld", (long)__LINE__);
}
/* UTF8 tests taken from Alexey Vatchenko's utf8 library. See http://www.bsdua.org/libbsdua.html */
static void test_utf82wchar(const char *src, size_t slen, const wchar_t *dst, size_t dlen,
int flags, size_t res, const char *descr)
{
size_t size;
wchar_t *mem = NULL;
/* Hack: if wchar is only UCS-2, and the UTF-8 input string contains astral characters, then tweak the expected size to 0 */
if (src != NULL && is_wchar_ucs2())
{
/* A UTF-8 code unit may represent an astral code point if it has 4 or more leading 1s */
const unsigned char astral_mask = 0xF0;
for (size_t i=0; i < slen; i++)
{
if ((src[i] & astral_mask) == astral_mask)
{
/* Astral char. We expect this conversion to just fail. */
res = 0;
break;
}
}
}
if (dst != NULL)
{
mem = (wchar_t *)malloc(dlen * sizeof(*mem));
if (mem == NULL)
{
err(L"u2w: %s: MALLOC FAILED\n", descr);
return;
}
}
do
{
size = utf8_to_wchar(src, slen, mem, dlen, flags);
if (res != size)
{
err(L"u2w: %s: FAILED (rv: %lu, must be %lu)", descr, size, res);
break;
}
if (mem == NULL)
break; /* OK */
if (memcmp(mem, dst, size * sizeof(*mem)) != 0)
{
err(L"u2w: %s: BROKEN", descr);
break;
}
}
while (0);
free(mem);
}
// Annoying variant to handle uchar to avoid narrowing conversion warnings
static void test_utf82wchar(const unsigned char *usrc, size_t slen, const wchar_t *dst, size_t dlen,
int flags, size_t res, const char *descr) {
const char *src = reinterpret_cast<const char *>(usrc);