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Run run_tests automatically 

Make unittest facility less visible.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2019-03-21 20:11:20 +00:00
parent cf253e12f3
commit a84877df68
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GPG Key ID: D3A4405BE6CC17F4
3 changed files with 42 additions and 57 deletions
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23
README.md
View File

@ -3,12 +3,13 @@ test.h
A very simple, light weight, header only C unit test framework.
## Features
# Features
* Easy to use, no dependencies, no setup needed.
* Keep test cases close to the code they test.
* Automatic registration of the test cases.
# Usage
## Setup
Just include the header
@ -17,8 +18,6 @@ Just include the header
#include "test.h"
```
To enable the test cases in your code, compile your program with `-DUNIT_TEST`.
## Defining test cases
```c
@ -31,20 +30,8 @@ TEST_CASE(test_case_name) {
## Run the test cases
In your main function, call `run_tests`:
Build your program with `-DUNIT_TEST`, then run your program with `./program --unittest`.
```c
int main(int argc, char *const *argv) {
// necessary setup code
// ...
if (!run_tests(argc, argv, NULL)) {
// test failed
abort();
}
// cleanup
// usual code
}
# Hooks
```
Then, run your program with `./program --unittest`.
If you define a function `test_h_unittest_setup`, it will be called before any test cases are run.

2
examples/trivial_tests/test_test1.c
View File

@ -3,7 +3,7 @@
#include "test.h"
int main(int argc, char *const *argv) {
run_tests(argc, argv, NULL);
printf("Hello World!\n");
}
TEST_CASE(test1) {

74
test.h
View File

@ -60,50 +60,55 @@ struct test_file_metadata __attribute__((weak)) * test_file_head;
SET_FAILURE(#a " != " #b); \
return; \
} \
} while(0)
} 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)) __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, \
#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, \
struct test_file_metadata *file_metadata)
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 bool __attribute__((unused))
run_tests(int argc, char *const *argv, bool *tests_run) {
static inline void __attribute__((constructor(102))) run_tests(void) {
bool should_run = false;
if (tests_run) {
*tests_run = false;
}
for (int i = 0; i < argc; i++) {
if (strcmp(argv[i], "--unittest") == 0) {
FILE *cmdlinef = fopen("/proc/self/cmdline", "r");
char *arg = NULL;
int arglen;
fscanf(cmdlinef, "%ms%n", &arg, &arglen);
fclose(cmdlinef);
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 true;
return;
}
if (tests_run) {
*tests_run = true;
if (&test_h_unittest_setup) {
test_h_unittest_setup();
}
struct test_file_metadata *i = test_file_head;
int failed = 0, success = 0;
while (i) {
@ -129,7 +134,7 @@ run_tests(int argc, char *const *argv, bool *tests_run) {
int total = failed + success;
fprintf(stderr, "Test results: passed %d/%d, failed %d/%d\n", success, total,
failed, total);
return failed == 0;
exit(failed == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
#else
@ -146,11 +151,4 @@ run_tests(int argc, char *const *argv, bool *tests_run) {
(void)(a); \
(void)(b)
static inline bool __attribute__((unused))
run_tests(int argc, char *const *argv, bool *tests_run) {
if (tests_run) {
*tests_run = false;
}
return true;
}
#endif