Improve/fix block_Realloc() cases

src/test/test_block.c

@@ -63,16 +63,21 @@ static void test_block (void)
     block_t *block = block_Alloc (sizeof (text));
     assert (block != NULL);
 
-    strcpy (block->p_buffer, text);
-    block = block_Realloc (block, -10, sizeof (text));
+    memcpy (block->p_buffer, text, sizeof (text));
+    block = block_Realloc (block, 0, sizeof (text));
     assert (block != NULL);
-    assert (!strcmp (block->p_buffer, text + 10));
     assert (block->i_buffer == sizeof (text));
+    assert (!memcmp (block->p_buffer, text, sizeof (text)));
 
-    block = block_Realloc (block, 10, sizeof (text));
+    block = block_Realloc (block, 200, sizeof (text) + 200);
+    assert (block != NULL);
+    assert (block->i_buffer == 200 + sizeof (text) + 200);
+    assert (!memcmp (block->p_buffer + 200, text, sizeof (text)));
+
+    block = block_Realloc (block, -200, sizeof (text));
     assert (block != NULL);
-    assert (!strcmp (block->p_buffer + 10, text + 10));
     assert (block->i_buffer == sizeof (text));
+    assert (!memcmp (block->p_buffer, text, sizeof (text)));
     block_Release (block);
 
     block = block_Alloc (SIZE_MAX);