Add a num2str() unit test

[fio.git] / unittests / lib / num2str.c

diff --git a/unittests/lib/num2str.c b/unittests/lib/num2str.c
new file mode 100644 (file)
index 0000000..931e28a
--- /dev/null
+++ b/unittests/lib/num2str.c
@@ -0,0 +1,53 @@
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include "../../compiler/compiler.h"
+#include "../../lib/num2str.h"
+#include "../unittest.h"
+
+struct testcase {
+       uint64_t num;
+       int maxlen;
+       int base;
+       int pow2;
+       enum n2s_unit unit;
+       const char *expected;
+};
+
+static const struct testcase testcases[] = {
+       { 1, 1, 1, 0, N2S_NONE, "1" },
+       { UINT64_MAX, 99, 1, 0, N2S_NONE, "18446744073709551615" },
+       { 18446744073709551, 2, 1, 0, N2S_NONE, "18P" },
+       { 18446744073709551, 4, 1, 0, N2S_NONE, "18.4P" },
+       { UINT64_MAX, 2, 1, 0, N2S_NONE, "18" },
+       { UINT64_MAX, 4, 1, 0, N2S_NONE, "18.4" },
+};
+
+static void test_num2str(void)
+{
+       const struct testcase *p;
+       char *str;
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(testcases); ++i) {
+               p = &testcases[i];
+               str = num2str(p->num, p->maxlen, p->base, p->pow2, p->unit);
+               CU_ASSERT_STRING_EQUAL(str, p->expected);
+               free(str);
+       }
+}
+
+static struct fio_unittest_entry tests[] = {
+       {
+               .name   = "num2str/1",
+               .fn     = test_num2str,
+       },
+       {
+               .name   = NULL,
+       },
+};
+
+CU_ErrorCode fio_unittest_lib_num2str(void)
+{
+       return fio_unittest_add_suite("lib/num2str.c", NULL, NULL, tests);
+}