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/* SPDX-License-Identifier: Apache-2.0 */
#include "BLI_bitmap.h"
#include "testing/testing.h"
namespace blender::tests {
TEST(bitmap, empty_is_all_unset)
{
BLI_BITMAP_DECLARE(bitmap, 10);
for (int i = 0; i < 10; ++i) {
EXPECT_FALSE(BLI_BITMAP_TEST_BOOL(bitmap, i));
}
}
TEST(bitmap, find_first_unset_empty)
{
BLI_BITMAP_DECLARE(bitmap, 10);
EXPECT_EQ(0, BLI_bitmap_find_first_unset(bitmap, 10));
}
TEST(bitmap, find_first_unset_full)
{
BLI_BITMAP_DECLARE(bitmap, 10);
BLI_bitmap_flip_all(bitmap, 10);
EXPECT_EQ(-1, BLI_bitmap_find_first_unset(bitmap, 10));
}
TEST(bitmap, find_first_unset_middle)
{
BLI_BITMAP_DECLARE(bitmap, 100);
BLI_bitmap_flip_all(bitmap, 100);
/* Turn some bits off */
BLI_BITMAP_DISABLE(bitmap, 53);
BLI_BITMAP_DISABLE(bitmap, 81);
BLI_BITMAP_DISABLE(bitmap, 85);
BLI_BITMAP_DISABLE(bitmap, 86);
/* Find lowest unset bit, and set it. */
EXPECT_EQ(53, BLI_bitmap_find_first_unset(bitmap, 100));
BLI_BITMAP_ENABLE(bitmap, 53);
/* Now should find the next lowest bit. */
EXPECT_EQ(81, BLI_bitmap_find_first_unset(bitmap, 100));
}
} // namespace blender::tests
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