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Diffstat (limited to 'tests/unittests.c')
| -rw-r--r-- | tests/unittests.c | 1287 |
1 files changed, 1287 insertions, 0 deletions
diff --git a/tests/unittests.c b/tests/unittests.c new file mode 100644 index 0000000..0ba5b33 --- /dev/null +++ b/tests/unittests.c @@ -0,0 +1,1287 @@ +/* + * unittests.c - unit tests for dynamic byte strings + * Copyright 2010 Lars Wirzenius + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + + +#define _GNU_SOURCE + +#include <setjmp.h> +#include <signal.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#include "dynstr.h" + + +#define FAIL(msg) \ + do { \ + printf("FAIL: %s\n", msg); \ + return false; \ + } while (0) + + +#define FAIL_UNLESS(cond) \ + do { \ + if (!(cond)) { \ + printf("FAIL: %s:%d: %s\n", \ + __FUNCTION__, __LINE__, #cond); \ + return false;\ + } \ + } while (0) + + +#define FAIL_UNLESS_EQUAL(a,b) \ + do { \ + if ((a) != (b)) { \ + printf("FAIL: %s:%d: not equal: '%s' and '%s'\n", \ + __FUNCTION__, __LINE__, #a, #b); \ + return false;\ + } \ + } while (0) + + +#define MAX_STRINGS 128 +static Dynstr *strings[MAX_STRINGS]; +static int num_strings; + +static void add(Dynstr *dynstr) +{ + if (num_strings < MAX_STRINGS) { + strings[num_strings] = dynstr; + num_strings++; + } +} + +static Dynstr *new_from_cstring(const char *cstring) +{ + Dynstr *dynstr; + + dynstr = dynstr_new_from_cstring(cstring); + add(dynstr); + return dynstr; +} + +static Dynstr *substr(Dynstr *dynstr, size_t offset, size_t size) +{ + Dynstr *sub; + + sub = dynstr_substr(dynstr, offset, size); + add(sub); + return sub; +} + +static void free_all_strings(void) +{ + while (num_strings > 0) { + num_strings--; + dynstr_free(strings[num_strings]); + } +} + + +static int test_default_error_handler_is_indicate(void) +{ + FAIL_UNLESS_EQUAL(dynstr_get_malloc_error_handler(), + dynstr_malloc_error_indicate); + return true; +} + + +static int test_sets_error_handler(void) +{ + dynstr_set_malloc_error_handler(dynstr_malloc_error_abort); + FAIL_UNLESS_EQUAL(dynstr_get_malloc_error_handler(), + dynstr_malloc_error_abort); + return true; +} + + +static int test_init_resets_error_handler(void) +{ + dynstr_set_malloc_error_handler(dynstr_malloc_error_abort); + dynstr_init(); + FAIL_UNLESS_EQUAL(dynstr_get_malloc_error_handler(), + dynstr_malloc_error_indicate); + return true; +} + + +static int test_indicate_handler_returns(void) +{ + dynstr_malloc_error_indicate(0, 0, NULL); + return true; +} + + +static jmp_buf env; +static void abort_handler(int signo) +{ + longjmp(env, 1); +} + + +static int test_abort_handler_calls_abort(void) +{ + struct sigaction act; + struct sigaction oldact; + + if (setjmp(env) == 0) { + act.sa_handler = abort_handler; + sigemptyset(&act.sa_mask); + act.sa_flags = 0; + sigaction(SIGABRT, &act, &oldact); + dynstr_set_malloc_error_handler(dynstr_malloc_error_abort); + dynstr_malloc_error_abort(0, 0, 0); + FAIL("dynstr_malloc_error_abort returned"); + } else { + sigaction(SIGABRT, &oldact, NULL); + } + return true; +} + + +static bool error_handler_called; + +static void error_handler(int error, size_t size, void *oldptr) +{ + error_handler_called = true; +} + +static int fail_malloc_after; + +static void *fail_malloc(size_t size) +{ + if (fail_malloc_after <= 0) + return NULL; + --fail_malloc_after; + return malloc(size); +} + +static int test_alloc_calls_error_handler(void) +{ + Dynstr *dynstr; + + error_handler_called = false; + dynstr_set_malloc_error_handler(error_handler); + dynstr_set_malloc(fail_malloc); + dynstr = dynstr_new_empty(); + FAIL_UNLESS_EQUAL(dynstr, NULL); + FAIL_UNLESS_EQUAL(error_handler_called, true); + return true; +} + +static int test_alloc_does_not_call_error_handler(void) +{ + Dynstr *dynstr; + + error_handler_called = false; + dynstr_set_malloc_error_handler(error_handler); + dynstr_set_malloc(malloc); + dynstr = dynstr_new_empty(); + FAIL_UNLESS_EQUAL(error_handler_called, false); + dynstr_free(dynstr); + return true; +} + + +static int test_uses_malloc_by_default(void) +{ + dynstr_init(); + FAIL_UNLESS_EQUAL(dynstr_get_malloc(), malloc); + return true; +} + + +static int test_sets_malloc(void) +{ + dynstr_set_malloc(fail_malloc); + FAIL_UNLESS_EQUAL(dynstr_get_malloc(), fail_malloc); + return true; +} + + +static int test_init_resets_malloc(void) +{ + dynstr_set_malloc(fail_malloc); + dynstr_init(); + FAIL_UNLESS_EQUAL(dynstr_get_malloc(), malloc); + return true; +} + + +static int test_empty_string_is_empty(void) +{ + Dynstr *dynstr; + + dynstr = dynstr_new_empty(); + FAIL_UNLESS_EQUAL(dynstr_len(dynstr), 0); + FAIL_UNLESS_EQUAL(dynstr_is_empty(dynstr), true); + dynstr_free(dynstr); + return true; +} + + +static int test_new_returns_NULL_upon_first_allocation_failure(void) +{ + Dynstr *dynstr; + + dynstr_init(); + dynstr_set_malloc(fail_malloc); + dynstr = dynstr_new_empty(); + FAIL_UNLESS_EQUAL(dynstr, NULL); + return true; +} + + +static int test_creates_from_cstring(void) +{ + const char bytes[] = "asdfasdfafdasdfasdfqw4tb"; + char newbytes[sizeof(bytes)]; + Dynstr *dynstr; + size_t size; + + dynstr = new_from_cstring(bytes); + FAIL_UNLESS_EQUAL(dynstr_len(dynstr), strlen(bytes)); + + size = dynstr_memcpy(newbytes, dynstr, 0, strlen(bytes)); + FAIL_UNLESS_EQUAL(size, strlen(bytes)); + FAIL_UNLESS_EQUAL(memcmp(bytes, newbytes, strlen(bytes)), 0); + + return true; +} + + +static int test_creates_from_memory(void) +{ + const char bytes[] = "asdfasdfafdasdfasdfqw4tb"; + char newbytes[sizeof(bytes)]; + Dynstr *dynstr; + size_t size; + + dynstr = dynstr_new_from_memory(bytes, sizeof(bytes)); + FAIL_UNLESS_EQUAL(dynstr_len(dynstr), sizeof(bytes)); + + size = dynstr_memcpy(newbytes, dynstr, 0, sizeof(bytes)); + FAIL_UNLESS_EQUAL(size, sizeof(bytes)); + FAIL_UNLESS_EQUAL(memcmp(bytes, newbytes, sizeof(bytes)), 0); + + dynstr_free(dynstr); + return true; +} + + +static int test_creates_from_constant_cstring(void) +{ + char bytes[] = "asdfasdfafdasdfasdfqw4tb"; + char newbytes[sizeof(bytes)]; + Dynstr *dynstr; + size_t size; + + dynstr = dynstr_new_from_constant_cstring(bytes); + FAIL_UNLESS_EQUAL(dynstr_len(dynstr), strlen(bytes)); + + size = dynstr_memcpy(newbytes, dynstr, 0, strlen(bytes)); + FAIL_UNLESS_EQUAL(size, strlen(bytes)); + FAIL_UNLESS_EQUAL(memcmp(bytes, newbytes, strlen(bytes)), 0); + + bytes[0] = 'x'; + dynstr_memcpy(newbytes, dynstr, 0, strlen(bytes)); + FAIL_UNLESS_EQUAL(memcmp(bytes, newbytes, strlen(bytes)), 0); + + dynstr_free(dynstr); + return true; +} + + +static int test_creates_from_constant_memory(void) +{ + char bytes[] = "asdfasdfafdasdfasdfqw4tb"; + char newbytes[sizeof(bytes)]; + Dynstr *dynstr; + size_t size; + + dynstr = dynstr_new_from_constant_memory(bytes, sizeof(bytes)); + FAIL_UNLESS_EQUAL(dynstr_len(dynstr), sizeof(bytes)); + + size = dynstr_memcpy(newbytes, dynstr, 0, sizeof(bytes)); + FAIL_UNLESS_EQUAL(size, sizeof(bytes)); + FAIL_UNLESS_EQUAL(memcmp(bytes, newbytes, sizeof(bytes)), 0); + + bytes[0] = 'x'; + dynstr_memcpy(newbytes, dynstr, 0, sizeof(bytes)); + FAIL_UNLESS_EQUAL(memcmp(bytes, newbytes, sizeof(bytes)), 0); + + dynstr_free(dynstr); + return true; +} + + +static int test_memcpy_returns_zero_if_offset_is_too_large(void) +{ + Dynstr *dynstr; + char mem[1024]; + + dynstr = new_from_cstring("hello"); + FAIL_UNLESS_EQUAL(dynstr_memcpy(mem, dynstr, dynstr_len(dynstr), 1), 0); + FAIL_UNLESS_EQUAL(dynstr_memcpy(mem, dynstr, dynstr_len(dynstr) + 1, 1), 0); + return true; +} + + +static int test_memcpy_truncates_if_copying_too_much(void) +{ + Dynstr *dynstr; + char mem[1024]; + size_t len; + + dynstr = new_from_cstring("hello"); + len = dynstr_len(dynstr); + FAIL_UNLESS_EQUAL(dynstr_memcpy(mem, dynstr, 0, len), len); + FAIL_UNLESS_EQUAL(dynstr_memcpy(mem, dynstr, 0, len + 1), len); + return true; +} + + +static int test_memcpy_copies_whole_string_ok(void) +{ + Dynstr *dynstr; + const char data[] = "hello"; + char mem[1024]; + size_t len; + + dynstr = new_from_cstring(data); + len = dynstr_len(dynstr); + dynstr_memcpy(mem, dynstr, 0, len); + FAIL_UNLESS_EQUAL(memcmp(data, mem, len), 0); + return true; +} + + +static int test_memcpy_copies_substring_ok(void) +{ + Dynstr *dynstr; + const char data[] = "hello"; + char mem[1024]; + size_t len; + + dynstr = new_from_cstring(data); + len = dynstr_len(dynstr); + dynstr_memcpy(mem, dynstr, 1, len-2); + FAIL_UNLESS_EQUAL(memcmp(data + 1, mem, len-2), 0); + return true; +} + + +static int test_copies_empty_substring_ok(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 1, 0); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 0); + return true; +} + + +static int test_copies_single_byte_substring_ok(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 1, 1); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 1); + FAIL_UNLESS_EQUAL(memcmp(buf, "b", 1), 0); + return true; +} + + +static int test_copies_middle_substring_ok(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 1, 4); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 4); + FAIL_UNLESS_EQUAL(memcmp(buf, "bcde", 4), 0); + return true; +} + + +static int test_copies_initial_substring_ok(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 0, 5); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 5); + FAIL_UNLESS_EQUAL(memcmp(buf, "abcde", 5), 0); + return true; +} + + +static int test_copies_final_substring_ok(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 1, 5); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 5); + FAIL_UNLESS_EQUAL(memcmp(buf, "bcdef", 5), 0); + return true; +} + + +static int test_copies_empty_substring_when_offset_too_big(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 100, 1); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 0); + return true; +} + + +static int test_copies_partial_substring_when_length_too_big(void) +{ + Dynstr *dynstr; + Dynstr *sub; + size_t size; + char buf[1024]; + + dynstr = new_from_cstring("abcdef"); + sub = substr(dynstr, 1, 6); + size = dynstr_memcpy(buf, sub, 0, dynstr_len(sub)); + FAIL_UNLESS_EQUAL(size, 5); + FAIL_UNLESS_EQUAL(memcmp(buf, "bcdef", 5), 0); + return true; +} + + +static int test_strdup_duplicates_string(void) +{ + Dynstr *dynstr; + char *cstring; + char data[] = "hello, world"; + + dynstr = dynstr_new_from_constant_cstring(data); + cstring = dynstr_strdup(dynstr); + FAIL_UNLESS_EQUAL(memcmp(data, cstring, sizeof(data)), 0); + free(cstring); + dynstr_free(dynstr); + return true; +} + + +static int test_cats_ok(void) +{ + Dynstr *a; + Dynstr *b; + Dynstr *c; + char buf[1024]; + size_t size; + + a = new_from_cstring("abc"); + b = new_from_cstring("def"); + c = dynstr_cat(a, b); + FAIL_UNLESS_EQUAL(dynstr_len(c), 6); + size = dynstr_memcpy(buf, c, 0, dynstr_len(c)); + FAIL_UNLESS_EQUAL(size, 6); + FAIL_UNLESS_EQUAL(memcmp(buf, "abcdef", 6), 0); + dynstr_free(c); + return true; +} + + +static int test_cat_returns_NULL_for_first_malloc_failure(void) +{ + Dynstr *a; + Dynstr *b; + Dynstr *c; + + a = new_from_cstring("abc"); + b = new_from_cstring("def"); + dynstr_set_malloc(fail_malloc); + c = dynstr_cat(a, b); + FAIL_UNLESS_EQUAL(c, NULL); + return true; +} + + +static int test_byteat_reports_correct_character(void) +{ + Dynstr *dynstr; + + dynstr = new_from_cstring("abc"); + FAIL_UNLESS_EQUAL(dynstr_byte_at(dynstr, 1), 'b'); + return true; +} + + +static int test_byteat_reports_error_for_too_large_offset(void) +{ + Dynstr *dynstr; + + dynstr = new_from_cstring("abc"); + FAIL_UNLESS_EQUAL(dynstr_byte_at(dynstr, 1024), -1); + return true; +} + + +static int test_byteat_reports_0xff_correctly(void) +{ + Dynstr *dynstr; + + dynstr = new_from_cstring("\xff"); + FAIL_UNLESS_EQUAL(dynstr_byte_at(dynstr, 0), 255); + return true; +} + + +static int test_first_byte_finds_byte(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123456"); + offset = dynstr_first_byte(dynstr, 0, '3'); + FAIL_UNLESS_EQUAL(offset, 2); + return true; +} + + +static int test_first_byte_only_finds_first_byte(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123123"); + offset = dynstr_first_byte(dynstr, 0, '3'); + FAIL_UNLESS_EQUAL(offset, 2); + return true; +} + + +static int test_first_byte_does_not_find_nonexistent_byte(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123456"); + offset = dynstr_first_byte(dynstr, 0, 'x'); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_first_byte_does_not_find_byte_outside_range(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123456"); + offset = dynstr_first_byte(dynstr, 4, '3'); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_first_byte_only_finds_byte_inside_range(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123123"); + offset = dynstr_first_byte(dynstr, 3, '3'); + FAIL_UNLESS_EQUAL(offset, 5); + return true; +} + + +static int test_first_byte_does_not_find_in_range_outside_string(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123123"); + offset = dynstr_first_byte(dynstr, 128, '3'); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_last_byte_finds_byte(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123456"); + offset = dynstr_last_byte(dynstr, 0, '3'); + FAIL_UNLESS_EQUAL(offset, 2); + return true; +} + + +static int test_last_byte_only_finds_last_byte(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123123"); + offset = dynstr_last_byte(dynstr, 0, '3'); + FAIL_UNLESS_EQUAL(offset, 5); + return true; +} + + +static int test_last_byte_does_not_find_nonexistent_byte(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123456"); + offset = dynstr_last_byte(dynstr, 0, 'x'); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_last_byte_does_not_find_byte_outside_range(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123456"); + offset = dynstr_last_byte(dynstr, 4, '3'); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_last_byte_only_finds_byte_inside_range(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123123"); + offset = dynstr_last_byte(dynstr, 3, '3'); + FAIL_UNLESS_EQUAL(offset, 5); + return true; +} + + +static int test_last_byte_does_not_find_in_range_outside_string(void) +{ + Dynstr *dynstr; + size_t offset; + + dynstr = new_from_cstring("123123"); + offset = dynstr_last_byte(dynstr, 128, '3'); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_first_string_finds_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123456"); + pattern = new_from_cstring("345"); + offset = dynstr_first_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, 2); + return true; +} + + +static int test_first_string_only_finds_first_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123123"); + pattern = new_from_cstring("123"); + offset = dynstr_first_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, 0); + return true; +} + + +static int test_first_string_does_not_find_nonexistent_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123456"); + pattern = new_from_cstring("x"); + offset = dynstr_first_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_first_string_does_not_find_pattern_outside_range(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123456"); + pattern = new_from_cstring("123"); + offset = dynstr_first_string(dynstr, 3, pattern); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_first_string_only_finds_pattern_inside_range(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123123"); + pattern = new_from_cstring("3"); + offset = dynstr_first_string(dynstr, 3, pattern); + FAIL_UNLESS_EQUAL(offset, 5); + return true; +} + + +static int test_first_string_does_not_find_empty_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123123"); + pattern = new_from_cstring(""); + offset = dynstr_first_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_last_string_finds_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123456"); + pattern = new_from_cstring("345"); + offset = dynstr_last_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, 2); + return true; +} + + +static int test_last_string_only_finds_last_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123123"); + pattern = new_from_cstring("123"); + offset = dynstr_last_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, 3); + return true; +} + + +static int test_last_string_does_not_find_nonexistent_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123456"); + pattern = new_from_cstring("x"); + offset = dynstr_last_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_last_string_does_not_find_pattern_outside_range(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123456"); + pattern = new_from_cstring("123"); + offset = dynstr_last_string(dynstr, 3, pattern); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + + +static int test_last_string_only_finds_pattern_inside_range(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123123"); + pattern = new_from_cstring("3"); + offset = dynstr_last_string(dynstr, 3, pattern); + FAIL_UNLESS_EQUAL(offset, 5); + return true; +} + + +static int test_last_string_does_not_find_empty_pattern(void) +{ + Dynstr *dynstr; + Dynstr *pattern; + size_t offset; + + dynstr = new_from_cstring("123123"); + pattern = new_from_cstring(""); + offset = dynstr_last_string(dynstr, 0, pattern); + FAIL_UNLESS_EQUAL(offset, DYNSTR_NOT_FOUND); + return true; +} + +static int test_cmp_returns_0_for_equal_strings(void) +{ + Dynstr *a; + Dynstr *b; + + a = new_from_cstring("foo"); + b = new_from_cstring("foo"); + FAIL_UNLESS_EQUAL(dynstr_cmp(a, b), 0); + return true; +} + + +static int test_cmp_returns_0_for_empty_strings(void) +{ + Dynstr *a; + Dynstr *b; + + a = dynstr_new_empty(); + b = dynstr_new_empty(); + FAIL_UNLESS_EQUAL(dynstr_cmp(a, b), 0); + dynstr_free(a); + dynstr_free(b); + return true; +} + + +static int test_cmp_returns_negative_if_only_first_string_is_empty(void) +{ + Dynstr *a; + Dynstr *b; + + a = new_from_cstring(""); + b = new_from_cstring("foo"); + FAIL_UNLESS(dynstr_cmp(a, b) < 0); + return true; +} + + +static int test_cmp_returns_positive_if_only_second_string_is_empty(void) +{ + Dynstr *a; + Dynstr *b; + + a = new_from_cstring("foo"); + b = new_from_cstring(""); + FAIL_UNLESS(dynstr_cmp(a, b) > 0); + return true; +} + + +static int test_cmp_returns_negative_if_first_string_comes_first(void) +{ + Dynstr *a; + Dynstr *b; + + a = new_from_cstring("x"); + b = new_from_cstring("\xff"); /* Check for unsigned comparision, too. */ + FAIL_UNLESS(dynstr_cmp(a, b) < 0); + return true; +} + + +static int test_cmp_returns_positive_if_second_string_comes_first(void) +{ + Dynstr *a; + Dynstr *b; + + a = new_from_cstring("\xff"); + b = new_from_cstring("x"); + FAIL_UNLESS(dynstr_cmp(a, b) > 0); + return true; +} + + +static int write_test(long (*callback)(char *filename, Dynstr *dynstr)) +{ + char tempname[] = "unittest.tmp.XXXXXX"; + int fd; + size_t num_bytes; + Dynstr *dynstr; + Dynstr *dynstr2; + char buf[1024]; + int read_bytes; + + dynstr = new_from_cstring("life is too short for str* and mem* in apps"); + + fd = mkstemp(tempname); + if (fd == -1) + abort(); + + num_bytes = callback(tempname, dynstr); + + FAIL_UNLESS_EQUAL(num_bytes, dynstr_len(dynstr)); + + read_bytes = read(fd, buf, sizeof(buf)); + if (read_bytes == -1) + abort(); + close(fd); + remove(tempname); + + dynstr2 = dynstr_new_from_memory(buf, read_bytes); + FAIL_UNLESS_EQUAL(read_bytes, dynstr_len(dynstr)); + FAIL_UNLESS_EQUAL(dynstr_cmp(dynstr, dynstr2), 0); + dynstr_free(dynstr2); + + return true; +} + + +static long fwrite_callback(char *filename, Dynstr *dynstr) +{ + FILE *f; + long num_bytes; + + f = fopen(filename, "w"); + num_bytes = dynstr_fwrite(f, dynstr); + fclose(f); + return num_bytes; +} + + +static int test_fwrite_writes_string(void) +{ + return write_test(fwrite_callback); +} + + +static long write_callback(char *filename, Dynstr *dynstr) +{ + int fd; + long num_bytes; + + fd = open(filename, O_WRONLY, 0); + num_bytes = dynstr_write(fd, dynstr); + close(fd); + return num_bytes; +} + + +static int test_write_writes_string(void) +{ + return write_test(write_callback); +} + + +static int read_test(Dynstr *(*callback)(char *filename, size_t size)) +{ + char tempname[] = "unittest.tmp.XXXXXX"; + int fd; + Dynstr *dynstr; + Dynstr *dynstr2; + const char canonical[] = "life is too short for str* and mem* in apps"; + + fd = mkstemp(tempname); + if (fd == -1) + abort(); + if (write(fd, canonical, sizeof(canonical)) == -1) + abort(); + close(fd); + + dynstr = callback(tempname, sizeof(canonical) * 2); + remove(tempname); + + FAIL_UNLESS(dynstr != NULL); + FAIL_UNLESS_EQUAL(dynstr_len(dynstr), sizeof(canonical)); + + dynstr2 = dynstr_new_from_memory(canonical, sizeof(canonical)); + FAIL_UNLESS_EQUAL(dynstr_cmp(dynstr, dynstr2), 0); + + dynstr_free(dynstr); + dynstr_free(dynstr2); + + return true; +} + + +static Dynstr *fread_callback(char *filename, size_t size) +{ + FILE *f; + Dynstr *dynstr; + + f = fopen(filename, "r"); + dynstr = dynstr_fread(f, size); + fclose(f); + return dynstr; +} + + +static int test_fread_reads_string(void) +{ + return read_test(fread_callback); +} + + +static Dynstr *read_callback(char *filename, size_t size) +{ + int fd; + Dynstr *dynstr; + + fd = open(filename, O_RDONLY, 0); + dynstr = dynstr_read(fd, size); + close(fd); + return dynstr; +} + + +static int test_read_reads_string(void) +{ + return read_test(read_callback); +} + + +static int readline_test(Dynstr *(*callback)(char *filename)) +{ + char tempname[] = "unittest.tmp.XXXXXX"; + int fd; + const char cline1[] = "life is too short for str* and mem* in apps\n"; + const char cline2[] = "use dynstr instead!\n"; + Dynstr *lines; + Dynstr *line1; + Dynstr *line2; + Dynstr *result; + + fd = mkstemp(tempname); + if (fd == -1) + abort(); + + line1 = dynstr_new_from_constant_cstring(cline1); + line2 = dynstr_new_from_constant_cstring(cline2); + lines = dynstr_cat(line1, line2); + if (dynstr_write(fd, lines) != dynstr_len(lines)) + abort(); + close(fd); + + result = callback(tempname); + remove(tempname); + + FAIL_UNLESS_EQUAL(dynstr_cmp(line1, result), 0); + + dynstr_free(line1); + dynstr_free(line2); + dynstr_free(lines); + dynstr_free(result); + + return true; +} + + +static Dynstr *freadline_callback(char *filename) +{ + FILE *f; + Dynstr *line1; + + f = fopen(filename, "r"); + line1 = dynstr_freadline(f); + fclose(f); + return line1; +} + + +static int test_freadline_reads_first_line(void) +{ + return readline_test(freadline_callback); +} + + +static Dynstr *readline_callback(char *filename) +{ + int fd; + Dynstr *line1; + + fd = open(filename, O_RDONLY, 0); + line1 = dynstr_readline(fd); + close(fd); + return line1; +} + + +static int test_readline_reads_first_line(void) +{ + return readline_test(readline_callback); +} + + +static void setup(void) +{ + dynstr_init(); + fail_malloc_after = 0; +} + + +static void teardown(void) +{ + free_all_strings(); +} + + +struct test { + const char *name; + int (*test)(void); +}; + + +#define TEST(func) { #func, func } + +static const struct test tests[] = { + TEST(test_default_error_handler_is_indicate), + TEST(test_sets_error_handler), + TEST(test_init_resets_error_handler), + TEST(test_uses_malloc_by_default), + TEST(test_sets_malloc), + TEST(test_init_resets_malloc), + TEST(test_alloc_calls_error_handler), + TEST(test_alloc_does_not_call_error_handler), + TEST(test_indicate_handler_returns), + TEST(test_abort_handler_calls_abort), + TEST(test_empty_string_is_empty), + TEST(test_new_returns_NULL_upon_first_allocation_failure), + TEST(test_creates_from_cstring), + TEST(test_creates_from_memory), + TEST(test_creates_from_constant_cstring), + TEST(test_creates_from_constant_memory), + TEST(test_memcpy_returns_zero_if_offset_is_too_large), + TEST(test_memcpy_truncates_if_copying_too_much), + TEST(test_memcpy_copies_whole_string_ok), + TEST(test_memcpy_copies_substring_ok), + TEST(test_strdup_duplicates_string), + TEST(test_copies_empty_substring_ok), + TEST(test_copies_single_byte_substring_ok), + TEST(test_copies_middle_substring_ok), + TEST(test_copies_initial_substring_ok), + TEST(test_copies_final_substring_ok), + TEST(test_copies_empty_substring_when_offset_too_big), + TEST(test_copies_partial_substring_when_length_too_big), + TEST(test_cats_ok), + TEST(test_cat_returns_NULL_for_first_malloc_failure), + TEST(test_byteat_reports_correct_character), + TEST(test_byteat_reports_error_for_too_large_offset), + TEST(test_byteat_reports_0xff_correctly), + TEST(test_first_byte_finds_byte), + TEST(test_first_byte_only_finds_first_byte), + TEST(test_first_byte_does_not_find_nonexistent_byte), + TEST(test_first_byte_does_not_find_byte_outside_range), + TEST(test_first_byte_only_finds_byte_inside_range), + TEST(test_first_byte_does_not_find_in_range_outside_string), + TEST(test_last_byte_finds_byte), + TEST(test_last_byte_only_finds_last_byte), + TEST(test_last_byte_does_not_find_nonexistent_byte), + TEST(test_last_byte_does_not_find_byte_outside_range), + TEST(test_last_byte_only_finds_byte_inside_range), + TEST(test_last_byte_does_not_find_in_range_outside_string), + TEST(test_first_string_finds_pattern), + TEST(test_first_string_only_finds_first_pattern), + TEST(test_first_string_does_not_find_nonexistent_pattern), + TEST(test_first_string_does_not_find_pattern_outside_range), + TEST(test_first_string_only_finds_pattern_inside_range), + TEST(test_first_string_does_not_find_empty_pattern), + TEST(test_last_string_finds_pattern), + TEST(test_last_string_only_finds_last_pattern), + TEST(test_last_string_does_not_find_nonexistent_pattern), + TEST(test_last_string_does_not_find_pattern_outside_range), + TEST(test_last_string_only_finds_pattern_inside_range), + TEST(test_last_string_does_not_find_empty_pattern), + TEST(test_cmp_returns_0_for_equal_strings), + TEST(test_cmp_returns_0_for_empty_strings), + TEST(test_cmp_returns_negative_if_only_first_string_is_empty), + TEST(test_cmp_returns_positive_if_only_second_string_is_empty), + TEST(test_cmp_returns_negative_if_first_string_comes_first), + TEST(test_cmp_returns_positive_if_second_string_comes_first), + TEST(test_fwrite_writes_string), + TEST(test_write_writes_string), + TEST(test_fread_reads_string), + TEST(test_read_reads_string), + TEST(test_freadline_reads_first_line), + TEST(test_readline_reads_first_line), +}; +static const int num_tests = sizeof(tests) / sizeof(tests[0]); + +int main(void) +{ + int exit; + + exit = EXIT_SUCCESS; + for (int i = 0; i < num_tests; ++i) { + setup(); + if (!tests[i].test()) { + exit = EXIT_FAILURE; + } + teardown(); + } + return exit; +} |