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       1                 :             : #include "test_libtestitall_all.h"
       2                 :             : 
       3                 :             : /**
       4                 :             :  * @brief Verify direct small-string diff generation through compare_memory_strings
       5                 :             :  *
       6                 :             :  * This test prepares two short multi-line strings in string-mode memory descriptors
       7                 :             :  * and compares them through compare_memory_strings(). The produced unified diff
       8                 :             :  * is checked against the exact expected text for this small input pair
       9                 :             :  *
      10                 :             :  * The test verifies that compare_memory_strings():
      11                 :             :  * - accepts byte-sized string descriptors as input
      12                 :             :  * - stores the produced diff into the destination memory descriptor
      13                 :             :  * - produces the expected compact unified diff for a simple one-line replacement
      14                 :             :  *
      15                 :             :  * @return Return status code
      16                 :             :  */
      17                 :           1 : Return test_libtestitall_0008(void)
      18                 :             : {
      19                 :           1 :         INITTEST;
      20                 :             : 
      21                 :           1 :         const char expected_diff[] = "-line2\n+line3\n";
      22                 :             : 
      23                 :           1 :         m_create(char,left_text_buffer,MEMORY_STRING);
      24                 :           1 :         m_create(char,right_text_buffer,MEMORY_STRING);
      25                 :           1 :         m_create(char,actual_diff_buffer,MEMORY_STRING);
      26                 :             : 
      27                 :           1 :         ASSERT(SUCCESS == m_copy_literal(left_text_buffer,"line1\nline2\n"));
      28                 :           1 :         ASSERT(SUCCESS == m_copy_literal(right_text_buffer,"line1\nline3\n"));
      29                 :             : 
      30                 :           1 :         ASSERT(SUCCESS == compare_memory_strings(
      31                 :             :                 actual_diff_buffer,
      32                 :             :                 left_text_buffer,
      33                 :             :                 right_text_buffer));
      34                 :             : 
      35                 :           1 :         ASSERT(0 == strcmp(expected_diff,m_text(actual_diff_buffer)));
      36                 :             : 
      37                 :           1 :         m_del(actual_diff_buffer);
      38                 :           1 :         m_del(right_text_buffer);
      39                 :           1 :         m_del(left_text_buffer);
      40                 :             : 
      41                 :           1 :         RETURN_STATUS;
      42                 :             : }