Dqn/Standalone/dqn_utest.h

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#if !defined(DQN_UTEST_H)
#define DQN_UTEST_H
////////////////////////////////////////////////////////////////////////////////////////////////////
//
// $$\ $$\ $$$$$$$$\ $$$$$$$$\ $$$$$$\ $$$$$$$$\
// $$ | $$ |\__$$ __|$$ _____|$$ __$$\\__$$ __|
// $$ | $$ | $$ | $$ | $$ / \__| $$ |
// $$ | $$ | $$ | $$$$$\ \$$$$$$\ $$ |
// $$ | $$ | $$ | $$ __| \____$$\ $$ |
// $$ | $$ | $$ | $$ | $$\ $$ | $$ |
// \$$$$$$ | $$ | $$$$$$$$\ \$$$$$$ | $$ |
// \______/ \__| \________| \______/ \__|
//
// dqn_utest.h -- Extremely minimal unit testing framework
//
////////////////////////////////////////////////////////////////////////////////////////////////////
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//
// A super minimal testing framework, most of the logic here is the pretty
// printing of test results.
//
// NOTE: Configuration /////////////////////////////////////////////////////////////////////////////
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//
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// #define DQN_UTEST_IMPLEMENTATION
// Define this in one and only one C++ file to enable the implementation
// code of the header file. This will also automatically enable the JSMN
// implementation.
//
// #define DQN_UTEST_RESULT_LPAD
// Define this to a number to specify how much to pad the output of the test
// result line before the test result is printed.
//
// #define DQN_UTEST_RESULT_PAD_CHAR
// Define this to a character to specify the default character to use for
// padding. By default this is '.'
//
// #define DQN_UTEST_SPACING
// Define this to a number to specify the number of spaces between the group
// declaration and the test output in the group.
//
// #define DQN_UTEST_BAD_COLOR
// Define this to a terminal color code to specify what color errors will be
// presented as.
//
// #define DQN_UTEST_GOOD_COLOR
// Define this to a terminal color code to specify what color sucess will be
// presented as.
// NOTE: Macros ////////////////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <string.h>
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#if !defined(DQN_UTEST_RESULT_LPAD)
#define DQN_UTEST_RESULT_LPAD 90
#endif
#if !defined(DQN_UTEST_RESULT_PAD_CHAR)
#define DQN_UTEST_RESULT_PAD_CHAR '.'
#endif
#if !defined(DQN_UTEST_SPACING)
#define DQN_UTEST_SPACING 2
#endif
#if !defined(DQN_UTEST_BAD_COLOR)
#define DQN_UTEST_BAD_COLOR "\x1b[31m"
#endif
#if !defined(DQN_UTEST_GOOD_COLOR)
#define DQN_UTEST_GOOD_COLOR "\x1b[32m"
#endif
#define DQN_UTEST_COLOR_RESET "\x1b[0m"
#define DQN_UTEST_GROUP(test, fmt, ...) \
for (Dqn_UTest *test_var_ = (printf(fmt "\n", ## __VA_ARGS__), &test); \
test_var_ != nullptr; \
Dqn_UTest_PrintStats(&test), test_var_ = nullptr)
#define DQN_UTEST_TEST(fmt, ...) \
for (int dummy_ = (Dqn_UTest_Begin(test_var_, fmt, ## __VA_ARGS__), 0); \
(void)dummy_, test_var_->state == Dqn_UTestState_TestBegun; \
Dqn_UTest_End(test_var_))
#define DQN_UTEST_ASSERTF(test, expr, fmt, ...) \
DQN_UTEST_ASSERTF_AT((test), __FILE__, __LINE__, (expr), fmt, ##__VA_ARGS__)
#define DQN_UTEST_ASSERT(test, expr) \
DQN_UTEST_ASSERT_AT((test), __FILE__, __LINE__, (expr))
// TODO: Fix the logs. They print before the tests, we should accumulate logs
// per test, then, dump them on test on. But to do this nicely without crappy
// mem management we need to implement an arena.
#define DQN_UTEST_LOG(fmt, ...) \
fprintf(stdout, "%*s" fmt "\n", DQN_UTEST_SPACING * 2, "", ##__VA_ARGS__)
#define DQN_UTEST_ASSERTF_AT(test, file, line, expr, fmt, ...) \
do { \
if (!(expr)) { \
(test)->state = Dqn_UTestState_TestFailed; \
fprintf(stderr, \
"%*sAssertion Triggered\n" \
"%*sFile: %s:%d\n" \
"%*sExpression: [" #expr "]\n" \
"%*sReason: " fmt "\n\n", \
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DQN_UTEST_SPACING * 2, \
"", \
DQN_UTEST_SPACING * 3, \
"", \
file, \
line, \
DQN_UTEST_SPACING * 3, \
"", \
DQN_UTEST_SPACING * 3, \
"", \
##__VA_ARGS__); \
} \
} while (0)
#define DQN_UTEST_ASSERT_AT(test, file, line, expr) \
do { \
if (!(expr)) { \
(test)->state = Dqn_UTestState_TestFailed; \
fprintf(stderr, \
"%*sFile: %s:%d\n" \
"%*sExpression: [" #expr "]\n\n", \
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DQN_UTEST_SPACING * 2, \
"", \
file, \
line, \
DQN_UTEST_SPACING * 2, \
""); \
} \
} while (0)
// NOTE: Header ////////////////////////////////////////////////////////////////////////////////////
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typedef enum Dqn_UTestState {
Dqn_UTestState_Nil,
Dqn_UTestState_TestBegun,
Dqn_UTestState_TestFailed,
} Dqn_UTestState;
typedef struct Dqn_UTest {
int num_tests_in_group;
int num_tests_ok_in_group;
Dqn_UTestState state;
bool finished;
char name[256];
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size_t name_size;
} Dqn_UTest;
void Dqn_UTest_PrintStats(Dqn_UTest *test);
void Dqn_UTest_BeginV(Dqn_UTest *test, char const *fmt, va_list args);
void Dqn_UTest_Begin(Dqn_UTest *test, char const *fmt, ...);
void Dqn_UTest_End(Dqn_UTest *test);
#endif // DQN_UTEST_H
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// NOTE: Implementation ////////////////////////////////////////////////////////////////////////////
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#if defined(DQN_UTEST_IMPLEMENTATION)
void Dqn_UTest_PrintStats(Dqn_UTest *test)
{
if (test->finished)
return;
test->finished = true;
bool all_clear = test->num_tests_ok_in_group == test->num_tests_in_group;
fprintf(stdout,
"%s\n %02d/%02d tests passed -- %s\n\n" DQN_UTEST_COLOR_RESET,
all_clear ? DQN_UTEST_GOOD_COLOR : DQN_UTEST_BAD_COLOR,
test->num_tests_ok_in_group,
test->num_tests_in_group,
all_clear ? "OK" : "FAILED");
}
void Dqn_UTest_BeginV(Dqn_UTest *test, char const *fmt, va_list args)
{
assert(test->state == Dqn_UTestState_Nil &&
"Nesting a unit test within another unit test is not allowed, ensure"
"the first test has finished by calling Dqn_UTest_End");
test->num_tests_in_group++;
test->state = Dqn_UTestState_TestBegun;
test->name_size = 0;
{
va_list args_copy;
va_copy(args_copy, args);
test->name_size = vsnprintf(NULL, 0, fmt, args_copy);
va_end(args_copy);
}
assert(test->name_size < sizeof(test->name));
vsnprintf(test->name, sizeof(test->name), fmt, args);
}
void Dqn_UTest_Begin(Dqn_UTest *test, char const *fmt, ...)
{
va_list args;
va_start(args, fmt);
Dqn_UTest_BeginV(test, fmt, args);
va_end(args);
}
void Dqn_UTest_End(Dqn_UTest *test)
{
assert(test->state != Dqn_UTestState_Nil && "Test was marked as ended but a test was never commenced using Dqn_UTest_Begin");
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size_t pad_size = DQN_UTEST_RESULT_LPAD - (DQN_UTEST_SPACING + test->name_size);
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if (pad_size < 0)
pad_size = 0;
char pad_buffer[DQN_UTEST_RESULT_LPAD] = {};
memset(pad_buffer, DQN_UTEST_RESULT_PAD_CHAR, pad_size);
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printf("%*s%.*s%.*s", DQN_UTEST_SPACING, "", (int)test->name_size, test->name, (int)pad_size, pad_buffer);
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if (test->state == Dqn_UTestState_TestFailed) {
printf(DQN_UTEST_BAD_COLOR " FAILED");
} else {
printf(DQN_UTEST_GOOD_COLOR " OK");
test->num_tests_ok_in_group++;
}
printf(DQN_UTEST_COLOR_RESET "\n");
test->state = Dqn_UTestState_Nil;
}
#endif // DQN_UTEST_IMPLEMENTATION