From f8217d240d598f39f70047f7a623dd46312542c6 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 4 Dec 2021 16:01:12 -0800 Subject: Initial commit. --- list/CMakeLists.txt | 23 +++++++ list/include/list.h | 21 ++++++ list/src/list.c | 14 ++++ list/test/list_test.c | 34 ++++++++++ list/test/test.h | 185 ++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 277 insertions(+) create mode 100644 list/CMakeLists.txt create mode 100644 list/include/list.h create mode 100644 list/src/list.c create mode 100644 list/test/list_test.c create mode 100644 list/test/test.h (limited to 'list') diff --git a/list/CMakeLists.txt b/list/CMakeLists.txt new file mode 100644 index 0000000..5d11d28 --- /dev/null +++ b/list/CMakeLists.txt @@ -0,0 +1,23 @@ +cmake_minimum_required(VERSION 3.16) + +project(list) + +# Library + +add_library(list + src/list.c) + +target_include_directories(list PUBLIC + include) + +target_compile_options(list PRIVATE -Wall -Wextra) + +# Test + +add_executable(list_test + test/list_test.c) + +target_link_libraries(list_test + list) + +target_compile_options(list_test PRIVATE -DUNIT_TEST -Wall -Wextra) diff --git a/list/include/list.h b/list/include/list.h new file mode 100644 index 0000000..b00b48b --- /dev/null +++ b/list/include/list.h @@ -0,0 +1,21 @@ +/// A doubly linked list. +/// +/// This list does not hold user data. Instead, the list can be used as an +/// intrusive list or as part as a more complex data structure. +#pragma once + +#include + +typedef struct list list; + +typedef struct list { + list* prev; + list* next; +} list; + +/// Create a new list from an array of `size` items. +void list_make(list* list, size_t size); + +/// Iterates over all the items in the list. +#define list_foreach(LIST, iter) \ + for (struct list* iter = LIST; iter; iter = iter->next) diff --git a/list/src/list.c b/list/src/list.c new file mode 100644 index 0000000..f5b6507 --- /dev/null +++ b/list/src/list.c @@ -0,0 +1,14 @@ +#include "list.h" + +#include + +void list_make(list* list, size_t size) { + if (size == 0) { + return; + } + assert(list); + for (size_t i = 0; i < size; ++i) { + list[i].prev = (i == 0 ? 0 : &list[i - 1]); + list[i].next = (i == size - 1 ? 0 : &list[i + 1]); + } +} diff --git a/list/test/list_test.c b/list/test/list_test.c new file mode 100644 index 0000000..a11c713 --- /dev/null +++ b/list/test/list_test.c @@ -0,0 +1,34 @@ +#include "list.h" + +#include "test.h" + +#define TEST_LIST_SIZE 10 + +// Create an empty list. +TEST_CASE(list_create_empty) { list_make(0, 0); } + +// Create a list of a given size. +TEST_CASE(list_create) { + struct list list[TEST_LIST_SIZE]; + list_make(list, TEST_LIST_SIZE); +} + +// Iterate over a list. +TEST_CASE(list_traverse) { + int numbers[TEST_LIST_SIZE] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + + struct list list[TEST_LIST_SIZE]; + list_make(list, TEST_LIST_SIZE); + + int count = 0; + int sum = 0; + list_foreach(list, item) { + count++; + sum += numbers[item - list]; + } + + TEST_EQUAL(count, TEST_LIST_SIZE); + TEST_EQUAL(sum, TEST_LIST_SIZE * (TEST_LIST_SIZE + 1) / 2); +} + +int main() { return 0; } diff --git a/list/test/test.h b/list/test/test.h new file mode 100644 index 0000000..fd8dc22 --- /dev/null +++ b/list/test/test.h @@ -0,0 +1,185 @@ +// SPDX-License-Identifier: MIT +#pragma once + +#ifdef UNIT_TEST + +#include +#include +#include +#include + +#if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \ + defined(__NetBSD__) || defined(__OpenBSD__) +#define USE_SYSCTL_FOR_ARGS 1 +// clang-format off +#include +#include +// clang-format on +#include // getpid +#endif + +struct test_file_metadata; + +struct test_failure { + bool present; + const char *message; + const char *file; + int line; +}; + +struct test_case_metadata { + void (*fn)(struct test_case_metadata *, struct test_file_metadata *); + struct test_failure failure; + const char *name; + struct test_case_metadata *next; +}; + +struct test_file_metadata { + bool registered; + const char *name; + struct test_file_metadata *next; + struct test_case_metadata *tests; +}; + +struct test_file_metadata __attribute__((weak)) * test_file_head; + +#define SET_FAILURE(_message) \ + metadata->failure = (struct test_failure) { \ + .message = _message, .file = __FILE__, .line = __LINE__, .present = true, \ + } + +#define TEST_EQUAL(a, b) \ + do { \ + if ((a) != (b)) { \ + SET_FAILURE(#a " != " #b); \ + return; \ + } \ + } while (0) + +#define TEST_TRUE(a) \ + do { \ + if (!(a)) { \ + SET_FAILURE(#a " is not true"); \ + return; \ + } \ + } while (0) + +#define TEST_STREQUAL(a, b) \ + do { \ + if (strcmp(a, b) != 0) { \ + SET_FAILURE(#a " != " #b); \ + return; \ + } \ + } while (0) + +#define TEST_CASE(_name) \ + static void __test_h_##_name(struct test_case_metadata *, \ + struct test_file_metadata *); \ + static struct test_file_metadata __test_h_file; \ + static struct test_case_metadata __test_h_meta_##_name = { \ + .name = #_name, \ + .fn = __test_h_##_name, \ + }; \ + static void __attribute__((constructor(101))) __test_h_##_name##_register(void) { \ + __test_h_meta_##_name.next = __test_h_file.tests; \ + __test_h_file.tests = &__test_h_meta_##_name; \ + if (!__test_h_file.registered) { \ + __test_h_file.name = __FILE__; \ + __test_h_file.next = test_file_head; \ + test_file_head = &__test_h_file; \ + __test_h_file.registered = true; \ + } \ + } \ + static void __test_h_##_name( \ + struct test_case_metadata *metadata __attribute__((unused)), \ + struct test_file_metadata *file_metadata __attribute__((unused))) + +extern void __attribute__((weak)) (*test_h_unittest_setup)(void); +/// Run defined tests, return true if all tests succeeds +/// @param[out] tests_run if not NULL, set to whether tests were run +static inline void __attribute__((constructor(102))) run_tests(void) { + bool should_run = false; +#ifdef USE_SYSCTL_FOR_ARGS + int mib[] = { + CTL_KERN, +#if defined(__NetBSD__) || defined(__OpenBSD__) + KERN_PROC_ARGS, + getpid(), + KERN_PROC_ARGV, +#else + KERN_PROC, + KERN_PROC_ARGS, + getpid(), +#endif + }; + char *arg = NULL; + size_t arglen; + sysctl(mib, sizeof(mib) / sizeof(mib[0]), NULL, &arglen, NULL, 0); + arg = malloc(arglen); + sysctl(mib, sizeof(mib) / sizeof(mib[0]), arg, &arglen, NULL, 0); +#else + FILE *cmdlinef = fopen("/proc/self/cmdline", "r"); + char *arg = NULL; + int arglen; + fscanf(cmdlinef, "%ms%n", &arg, &arglen); + fclose(cmdlinef); +#endif + for (char *pos = arg; pos < arg + arglen; pos += strlen(pos) + 1) { + if (strcmp(pos, "--unittest") == 0) { + should_run = true; + break; + } + } + free(arg); + + if (!should_run) { + return; + } + + if (&test_h_unittest_setup) { + test_h_unittest_setup(); + } + + struct test_file_metadata *i = test_file_head; + int failed = 0, success = 0; + while (i) { + fprintf(stderr, "Running tests from %s:\n", i->name); + struct test_case_metadata *j = i->tests; + while (j) { + fprintf(stderr, "\t%s ... ", j->name); + j->failure.present = false; + j->fn(j, i); + if (j->failure.present) { + fprintf(stderr, "failed (%s at %s:%d)\n", j->failure.message, + j->failure.file, j->failure.line); + failed++; + } else { + fprintf(stderr, "passed\n"); + success++; + } + j = j->next; + } + fprintf(stderr, "\n"); + i = i->next; + } + int total = failed + success; + fprintf(stderr, "Test results: passed %d/%d, failed %d/%d\n", success, total, + failed, total); + exit(failed == 0 ? EXIT_SUCCESS : EXIT_FAILURE); +} + +#else + +#include + +#define TEST_CASE(name) static void __attribute__((unused)) __test_h_##name(void) + +#define TEST_EQUAL(a, b) \ + (void)(a); \ + (void)(b) +#define TEST_TRUE(a) (void)(a) +#define TEST_STREQUAL(a, b) \ + (void)(a); \ + (void)(b) + +#endif -- cgit v1.2.3