Added the test framework to the tests directory

Separated the test framework into the header. Test definitions should be
placed in the test.c.

c_projects/x_tfw4c/tests/include/test.h

@@ -0,0 +1,162 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <assert.h>
+
+// printf Formating
+#define X_RED "\x1B[31m"
+#define X_GREEN "\x1B[32m"
+#define X_YELLOW "\x1B[33m"
+#define X_RST "\x1B[0m"
+
+
+// TEST FRAMEWORK STRUCT
+typedef struct testnode{
+	char* name;
+	int (*op)(void);
+	struct testnode* next;
+}testnode;
+
+// LL nodes
+static testnode* head = NULL;
+static testnode* tail = NULL;
+static testnode* ptr = NULL;
+
+// TEST FRAMEWORK MACRO
+// create a new node and pass in the name of the test. Then make a new function
+// that adds the test to the LL. __attribute__((constructor)) has the function
+// run before main
+#define TEST(UNIT)\
+	static int UNIT(void);\
+	static testnode UNIT##node = {#UNIT, UNIT, NULL};\
+	__attribute__((constructor)) \
+	static void add##UNIT(void){ \
+		if (head == NULL){\
+			head = &UNIT##node;\
+			tail = head;\
+			return; \
+		}\
+		ptr = tail;\
+		tail = &UNIT##node;\
+		ptr->next = tail;\
+	}\
+	static int UNIT(void)
+
+// TEST HELPER FUNCTIONS and STRUCTS
+typedef enum {START, END} header_opt;
+static void ptest_headers(header_opt option){
+	switch (option){
+	case START:
+		printf("\n-------------------\n");
+		printf("   Starting Tests\n");
+		printf("-------------------\n");
+		break;
+	case END:
+		printf("-------------------\n");
+		printf("   ENDING TESTS\n");
+		printf("-------------------\n\n");
+		break;
+	default:
+		printf("error: Wrong option in ptest_headers()\n");
+		exit(-1);
+	}
+}
+
+typedef enum {PASS, FAIL}rc_opt;
+static void ppass_fail(rc_opt rc){
+	switch (rc){
+	case PASS:
+		printf("%s[PASS]%s ", X_GREEN, X_RST);
+		printf("%s", ptr->name);
+		break;
+	case FAIL:
+		printf("%s[FAIL]%s ", X_RED, X_RST);
+		printf("%s ", ptr->name);
+		break;
+	default:
+		printf("error: Unknown return code");
+		exit(-1);
+	}
+
+}
+
+static int presult(int status){
+	if (WIFEXITED(status)){
+		int rc = WEXITSTATUS(status);
+		if (rc == 0) {
+			ppass_fail(PASS);
+			return 0;
+		}
+		else{
+			ppass_fail(FAIL);
+			printf("- Exit Code %s(%d)%s",
+					X_YELLOW, rc, X_RST);
+			return 1;
+		}
+	}
+	else if (WIFSIGNALED(status)){
+		ppass_fail(FAIL);
+		printf("- Termination Signal %s(%d)%s",
+				X_YELLOW, WTERMSIG(status), X_RST);
+		return 1;
+	}
+	else{
+		printf("%s[FAIL]%s ", X_RED, X_RST);
+		printf("%s ", ptr->name);
+		printf("- Unknown Error ");
+		return 1;
+	}
+}
+
+static int run_child(){
+	int status;
+	pid_t cpid = fork();
+	if (cpid < 0){
+		perror("fork");
+		exit(EXIT_FAILURE);
+	}
+
+	if (cpid == 0){
+		int rc = ptr->op();
+		_exit(rc);
+	}else{
+		if (waitpid(cpid, &status, 0) < 0){
+			perror("waitpid");
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	return status;
+}
+
+static int run_tests(){
+	int total_tests = 0;
+	int errors = 0;
+
+	ptest_headers(START);
+	
+	ptr = head;
+	while (ptr != NULL){
+		total_tests++;
+
+
+		if(presult(run_child())){
+			errors++;
+		}
+
+		printf("\n");
+		ptr = ptr->next;
+	}
+	
+
+	printf("\nTests completed with %s%d PASS%s", X_GREEN, total_tests - errors, X_RST);
+	printf(" and %s%d FAIL%s\n", X_RED, errors, X_RST);
+
+	ptest_headers(END);
+
+	if (errors > 0){
+		return 1;
+	}
+	return 0;
+}

c_projects/x_tfw4c/tests/test.c

@@ -0,0 +1,29 @@
+#include "test.h"
+
+// INCLUDE PROJECT HEADERS
+#include "hello_world.h"
+
+
+// DEFINE TESTS
+TEST(success){
+	return 0;
+}
+
+TEST(fail){
+	int i = 1;
+	assert(i == 0);
+	printf("after assert\n");
+	return i;
+}
+
+TEST(segfault){
+	int* x = NULL;
+	int y = *x;
+	return y;
+}
+
+// END OF TEST DEFINITIONS
+
+int main(void){
+	return run_tests();
+}