lib: test-data-stack - add realloc tests

These will fail noisily with a DEBUG build until the realloc/DEBUG
bug is fixed.

diff --git a/src/lib/test-data-stack.c b/src/lib/test-data-stack.c
index efb8f4798d4790f5448d86ceef453752cb1d706f..37cb1f12d1b69b32180c19eac2677bb76ab8771b 100644 (file)
--- a/src/lib/test-data-stack.c
+++ b/src/lib/test-data-stack.c
@@ -63,6 +63,31 @@ static void test_ds_buffers(void)
        test_end();
 }
 
+static void test_ds_realloc()
+{
+       test_begin("data-stack realloc");
+       T_BEGIN {
+               size_t i;
+               unsigned char *p;
+               size_t left = t_get_bytes_available();
+               while (left < 10000) {
+                       t_malloc(left); /* force a new block */
+                       left = t_get_bytes_available();
+               }
+               left -= 64; /* make room for the sentry if DEBUG */
+               p = t_malloc(1);
+               p[0] = 1;
+               for (i = 2; i <= left; i++) {
+                       /* grow it */
+                       test_assert_idx(t_try_realloc(p, i), i);
+                       p[i-1] = i;
+                       test_assert_idx(p[i-2] == (unsigned char)(i-1), i);
+               }
+               test_assert(t_get_bytes_available() < 64 + MEM_ALIGN(1));
+       } T_END;
+       test_end();
+}
+
 static void test_ds_recurse(int depth, int number, size_t size)
 {
        int i;
@@ -86,6 +111,8 @@ static void test_ds_recurse(int depth, int number, size_t size)
                memset(ps[i], tag[0], size);
                ps[i][size-2] = 0;
        }
+       /* Do not expect a high failure rate from t_try_realloc */
+       test_assert_idx(try_fails <= number / 20, depth);
 
        /* Now recurse... */
        if(depth>0)
@@ -115,5 +142,6 @@ static void test_ds_recursive(int count, int depth)
 void test_data_stack(void)
 {
        test_ds_buffers();
+       test_ds_realloc();
        test_ds_recursive(20, 80);
 }