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-rw-r--r--src/vppinfra/vector/test/compress.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/vppinfra/vector/test/compress.c b/src/vppinfra/vector/test/compress.c
new file mode 100644
index 00000000000..7e3eba9892d
--- /dev/null
+++ b/src/vppinfra/vector/test/compress.c
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright(c) 2021 Cisco Systems, Inc.
+ */
+
+#include <vppinfra/format.h>
+#include <vppinfra/vector/test/test.h>
+#include <vppinfra/vector/compress.h>
+
+__clib_test_fn u32
+clib_compress_u32_wrapper (u32 *dst, u32 *src, u64 *mask, u32 n_elts)
+{
+ return clib_compress_u32 (dst, src, mask, n_elts);
+}
+
+typedef struct
+{
+ u64 mask[10];
+ u32 n_elts;
+} compress_test_t;
+
+static compress_test_t tests[] = {
+ { .mask = { 1 }, .n_elts = 1 },
+ { .mask = { 2 }, .n_elts = 2 },
+ { .mask = { 3 }, .n_elts = 2 },
+ { .mask = { 0, 1 }, .n_elts = 66 },
+ { .mask = { 0, 2 }, .n_elts = 69 },
+ { .mask = { 0, 3 }, .n_elts = 66 },
+ { .mask = { ~0ULL, ~0ULL, ~0ULL, ~0ULL }, .n_elts = 62 },
+ { .mask = { ~0ULL, ~0ULL, ~0ULL, ~0ULL }, .n_elts = 255 },
+ { .mask = { ~0ULL, 1, 1, ~0ULL }, .n_elts = 256 },
+};
+
+static clib_error_t *
+test_clib_compress_u32 (clib_error_t *err)
+{
+ u32 src[513];
+ u32 dst[513];
+ u32 i, j;
+
+ for (i = 0; i < ARRAY_LEN (src); i++)
+ src[i] = i;
+
+ for (i = 0; i < ARRAY_LEN (tests); i++)
+ {
+ compress_test_t *t = tests + i;
+ u32 *dp = dst;
+ u32 r;
+
+ for (j = 0; j < ARRAY_LEN (dst); j++)
+ dst[j] = 0xa5a5a5a5;
+
+ r = clib_compress_u32_wrapper (dst, src, t->mask, t->n_elts);
+
+ for (j = 0; j < t->n_elts; j++)
+ {
+ if ((t->mask[j >> 6] & (1ULL << (j & 0x3f))) == 0)
+ continue;
+
+ if (dp[0] != src[j])
+ return clib_error_return (err,
+ "wrong data in testcase %u at "
+ "(dst[%u] = 0x%x, src[%u] = 0x%x)",
+ i, dp - dst, dp[0], j, src[j]);
+ dp++;
+ }
+
+ if (dst[dp - dst + 1] != 0xa5a5a5a5)
+ return clib_error_return (err, "buffer overrun in testcase %u", i);
+
+ if (dp - dst != r)
+ return clib_error_return (err, "wrong number of elts in testcase %u",
+ i);
+ }
+
+ return err;
+}
+
+REGISTER_TEST (clib_compress_u32) = {
+ .name = "clib_compress_u32",
+ .fn = test_clib_compress_u32,
+};