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lib: sbi_bitmap_test: add tests for bitmap_empty()

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Add tests for bitmap_empty(), covers empty/non-empty bitmaps and
edge case nbits=0.

Signed-off-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260311125116.1401002-2-peter.lin@sifive.com
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Yu-Chien Peter Lin
2026-03-11 20:51:16 +08:00
committed by Anup Patel
parent ff7d245b86
commit 2257e99571
1 changed files with 29 additions and 0 deletions
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29
lib/sbi/tests/sbi_bitmap_test.c
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@@ -92,10 +92,39 @@ static void bitmap_xor_test(struct sbiunit_test_case *test)
SBIUNIT_EXPECT_MEMEQ(test, res, data_zero, DATA_SIZE);
}
static void bitmap_empty_test(struct sbiunit_test_case *test)
{
unsigned long res[DATA_SIZE];
/* All zeros = empty */
SBIUNIT_EXPECT_EQ(test, bitmap_empty(data_zero, DATA_BIT_SIZE), true);
/* Non-zero data = not empty */
SBIUNIT_EXPECT_EQ(test, bitmap_empty(data_a, DATA_BIT_SIZE), false);
SBIUNIT_EXPECT_EQ(test, bitmap_empty(data_b, DATA_BIT_SIZE), false);
/* bitmap_zero creates empty bitmap */
bitmap_zero(res, DATA_BIT_SIZE);
SBIUNIT_EXPECT_EQ(test, bitmap_empty(res, DATA_BIT_SIZE), true);
/* bitmap_fill creates non-empty bitmap */
bitmap_fill(res, DATA_BIT_SIZE);
SBIUNIT_EXPECT_EQ(test, bitmap_empty(res, DATA_BIT_SIZE), false);
/* Single bit set = not empty */
bitmap_zero(res, DATA_BIT_SIZE);
bitmap_set(res, 0, 1);
SBIUNIT_EXPECT_EQ(test, bitmap_empty(res, DATA_BIT_SIZE), false);
/* Zero nbits = empty */
SBIUNIT_EXPECT_EQ(test, bitmap_empty(data_a, 0), true);
}
static struct sbiunit_test_case bitmap_test_cases[] = {
SBIUNIT_TEST_CASE(bitmap_and_test),
SBIUNIT_TEST_CASE(bitmap_or_test),
SBIUNIT_TEST_CASE(bitmap_xor_test),
SBIUNIT_TEST_CASE(bitmap_empty_test),
SBIUNIT_END_CASE,
};