code ok, validé par test.c

run.c

@@ -116,10 +116,10 @@ int run (char *input,char *output){
         struct node *current;
         current = malloc(sizeof(node_t));
         *current = *pr_divs->tail;
-        fprintf(file2,"%s ",chaine);
+        fprintf(file2,"%s",chaine);
         for (int i = 0; i < pr_divs->size; i++)
         {
-            fprintf(file2,"%d ",current->value);
+            fprintf(file2," %d",current->value);
             current = current->next;
         }
         fputc('\n',file2);

test.c

@@ -39,17 +39,15 @@ void file_test(void){
     return;
     }
 
-    CU_ASSERT_PTR_EQUAL(file1,file2);
-
-    /* char chaine1[50];
+    char chaine1[50];
     char chaine2[50];
 
     while (fgets(chaine1,50,file1) != NULL && fgets(chaine2,50,file2) != NULL)
     {
-        printf(chaine1);
-        printf(chaine2);
-        CU_ASSERT_PTR_EQUAL(chaine1,chaine2);
-    } */
+        printf("%d\n",chaine1[2]);
+        printf("%d\n",chaine2[2]);
+        CU_ASSERT_STRING_EQUAL(chaine1,chaine2);
+    }
 
     fclose(file1);
     fclose(file2);