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