1  /*******************************************************************************
 2   * test_bug8_uart_commented_out.c
 3   *
 4   * Bug #8 (FIXED): Debug helpers uart_print() and uart_println() are now
 5   * uncommented and available as active code.
 6   *
 7   * Post-fix test:
 8   *   Read the source file and verify the functions are NOT inside comment blocks.
 9   ******************************************************************************/
10  #include <assert.h>
11  #include <stdio.h>
12  #include <string.h>
13  #include <stdlib.h>
14  
15  /* Path to the source file (relative from test execution dir) */
16  #define SOURCE_FILE "../9_1_3_C_Cpp_Code/main.cpp"
17  
18  /* Helper: read entire file into malloc'd buffer. Returns NULL on failure. */
19  static char *read_file(const char *path, long *out_size)
20  {
21      FILE *f = fopen(path, "r");
22      if (!f) return NULL;
23      fseek(f, 0, SEEK_END);
24      long size = ftell(f);
25      fseek(f, 0, SEEK_SET);
26      char *buf = (char *)malloc(size + 1);
27      if (!buf) { fclose(f); return NULL; }
28      long nread = (long)fread(buf, 1, size, f);
29      buf[nread] = '\0';
30      fclose(f);
31      if (out_size) *out_size = nread;
32      return buf;
33  }
34  
35  int main(void)
36  {
37      printf("=== Bug #8 (FIXED): uart_print/uart_println uncommented ===\n");
38  
39      long size;
40      char *src = read_file(SOURCE_FILE, &size);
41      if (!src) {
42          src = read_file("/Users/ganeshpanth/PLFM_RADAR/9_Firmware/9_1_Microcontroller/9_1_3_C_Cpp_Code/main.cpp", &size);
43      }
44      assert(src != NULL && "Could not open main.cpp");
45      printf("  Read %ld bytes from main.cpp\n", size);
46  
47      /* ---- Test A: uart_print is NOT inside a block comment ---- */
48      const char *uart_print_sig = "static void uart_print(const char *msg)";
49      char *pos = strstr(src, uart_print_sig);
50      assert(pos != NULL && "uart_print function signature not found in source");
51      printf("  Found uart_print signature at offset %ld\n", (long)(pos - src));
52  
53      int inside_comment = 0;
54      for (char *p = src; p < pos; p++) {
55          if (p[0] == '/' && p[1] == '*') {
56              inside_comment = 1;
57              p++;
58          } else if (p[0] == '*' && p[1] == '/') {
59              inside_comment = 0;
60              p++;
61          }
62      }
63      printf("  uart_print is inside block comment: %s\n",
64             inside_comment ? "YES" : "NO");
65      assert(inside_comment == 0);
66      printf("  PASS: uart_print is NOT commented out (FIXED)\n");
67  
68      /* ---- Test B: uart_println is NOT inside a block comment ---- */
69      const char *uart_println_sig = "static void uart_println(const char *msg)";
70      pos = strstr(src, uart_println_sig);
71      assert(pos != NULL && "uart_println function signature not found in source");
72      printf("  Found uart_println signature at offset %ld\n", (long)(pos - src));
73  
74      inside_comment = 0;
75      for (char *p = src; p < pos; p++) {
76          if (p[0] == '/' && p[1] == '*') {
77              inside_comment = 1;
78              p++;
79          } else if (p[0] == '*' && p[1] == '/') {
80              inside_comment = 0;
81              p++;
82          }
83      }
84      printf("  uart_println is inside block comment: %s\n",
85             inside_comment ? "YES" : "NO");
86      assert(inside_comment == 0);
87      printf("  PASS: uart_println is NOT commented out (FIXED)\n");
88  
89      free(src);
90      printf("=== Bug #8 (FIXED): ALL TESTS PASSED ===\n\n");
91      return 0;
92  }