1 // SPDX-License-Identifier: GPL-2.0
2 #include <inttypes.h>
3 #include <linux/compiler.h>
4 #include <linux/types.h>
5 #include <string.h>
6 #include "tests.h"
7 #include "units.h"
8 #include "debug.h"
9 
10 int test__unit_number__scnprint(struct test *t __maybe_unused, int subtest __maybe_unused)
11 {
12 	struct {
13 		u64		 n;
14 		const char	*str;
15 	} test[] = {
16 		{ 1,			"1B"	},
17 		{ 10*1024,		"10K"	},
18 		{ 20*1024*1024,		"20M"	},
19 		{ 30*1024*1024*1024ULL,	"30G"	},
20 		{ 0,			"0B"	},
21 		{ 0,			NULL	},
22 	};
23 	unsigned i = 0;
24 
25 	while (test[i].str) {
26 		char buf[100];
27 
28 		unit_number__scnprintf(buf, sizeof(buf), test[i].n);
29 
30 		pr_debug("n %" PRIu64 ", str '%s', buf '%s'\n",
31 			 test[i].n, test[i].str, buf);
32 
33 		if (strcmp(test[i].str, buf))
34 			return TEST_FAIL;
35 
36 		i++;
37 	}
38 
39 	return TEST_OK;
40 }
41