feat(utils): string utils + corresponding tests

tests/unit/lexer/lexer_tests.c

@@ -1,8 +1,9 @@
 #include <criterion/criterion.h>
 #include <criterion/new/assert.h>
-#include <criterion/redirect.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <string.h>
+#include <sys/types.h>
 
 #include "lexer/lexer.h"
 
@@ -10,50 +11,44 @@ TestSuite(token_creation);
 
 Test(token_creation, basic)
 {
-    char *input = "Hello World";
+    char input[] = "Hello World";
 
-    char *actual = new_token(input, 5);
-    char *expected = "Hello";
+    char actual[] = new_token(input, 5);
+    char expected[] = "Hello";
     cr_expect(eq(str, actual, expected));
     free(actual);
 }
 
 Test(token_creation, nul)
 {
-    char *input = NULL;
+    char input[] = NULL;
 
-    char *actual = new_token(input, 5);
-    char *expected = NULL;
-    cr_expect(eq(str, actual, expected));
-    free(actual);
+    char actual[] = new_token(input, 5);
+    cr_expect(actual == NULL);
 }
 
 Test(token_creation, too_large)
 {
-    char *input = "Hel";
+    char input[] = "Hel";
 
-    char *actual = new_token(input, 5);
-    char *expected = NULL;
-    cr_expect(eq(str, actual, expected));
-    free(actual);
+    char actual[] = new_token(input, 5);
+    cr_expect(actual == NULL);
 }
 
 Test(token_creation, empty)
 {
-    char *input = "";
+    char input[] = "";
 
-    char *actual = new_token(input, 5);
-    char *expected = NULL;
-    cr_expect(eq(str, actual, expected));
-    free(actual);
+    char actual[] = new_token(input, 5);
+    cr_expect(actual == NULL);
 }
 
 Test(token_creation, basic_long)
 {
-    char *input = "Hello World! This project is a mini shell, I love BIG G.";
+    char input[] = "Hello World! This project is a mini shell, I love BIG G.";
 
-    char *actual = new_token(input, 42);
-    char *expected = calloc(42 + 1, sizeof(char));
+    char actual[] = new_token(input, 42);
+    char expected[] = calloc(42 + 1, sizeof(char));
     strncpy(input, expected, 42);
     cr_expect(eq(str, actual, expected));
     free(actual);