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-rw-r--r--src/vppinfra/test/index_to_ptr.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/src/vppinfra/test/index_to_ptr.c b/src/vppinfra/test/index_to_ptr.c
new file mode 100644
index 00000000000..06b621c10ff
--- /dev/null
+++ b/src/vppinfra/test/index_to_ptr.c
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2021 Cisco Systems, Inc.
+ */
+
+#include <vppinfra/format.h>
+#include <vppinfra/test/test.h>
+#include <vppinfra/vector/index_to_ptr.h>
+
+typedef void (wrapper_fn) (u32 *indices, void *base, u8 shift, void **ptrs,
+ u32 n_elts);
+
+__test_funct_fn void
+clib_index_to_ptr_u32_wrapper (u32 *indices, void *base, u8 shift, void **ptrs,
+ u32 n_elts)
+{
+ clib_index_to_ptr_u32 (indices, base, shift, ptrs, n_elts);
+}
+
+static wrapper_fn *wfn = &clib_index_to_ptr_u32_wrapper;
+
+static clib_error_t *
+test_clib_index_to_ptr_u32 (clib_error_t *err)
+{
+ void *_ptrs[512 + 128], **ptrs = _ptrs + 64;
+ u32 _indices[512 + 128], *indices = _indices + 64;
+ u16 lengths[] = { 1, 3, 5, 7, 9, 15, 16, 17, 31, 32,
+ 33, 40, 41, 42, 63, 64, 65, 511, 512 };
+
+ for (int i = 0; i < ARRAY_LEN (_indices); i++)
+ _indices[i] = i;
+
+ for (int i = 0; i < ARRAY_LEN (lengths); i++)
+ {
+ u16 len = lengths[i];
+ u8 shift = 6;
+ void *base = (void *) 0x100000000 + i;
+
+ for (int j = -64; j < len + 64; j++)
+ ptrs[j] = (void *) 0xfefefefefefefefe;
+
+ wfn (indices, base, shift, ptrs, len);
+ for (int j = 0; j < len; j++)
+ {
+ void *expected = base + ((u64) indices[j] << shift);
+ if (ptrs[j] != expected)
+ return clib_error_return (err,
+ "testcase failed for length %u "
+ "(offset %u, expected %p, found %p)",
+ len, j, expected, ptrs[j]);
+ }
+ }
+ return err;
+}
+
+REGISTER_TEST (clib_index_to_ptr_u32) = {
+ .name = "clib_index_to_ptr_u32",
+ .fn = test_clib_index_to_ptr_u32,
+};