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/* SPDX-License-Identifier: Apache-2.0 */
#include "BLI_disjoint_set.hh"
#include "BLI_strict_flags.h"
#include "testing/testing.h"
namespace blender::tests {
TEST(disjoint_set, Test)
{
DisjointSet disjoint_set(6);
EXPECT_FALSE(disjoint_set.in_same_set(1, 2));
EXPECT_FALSE(disjoint_set.in_same_set(5, 3));
EXPECT_TRUE(disjoint_set.in_same_set(2, 2));
EXPECT_EQ(disjoint_set.find_root(3), 3);
disjoint_set.join(1, 2);
EXPECT_TRUE(disjoint_set.in_same_set(1, 2));
EXPECT_FALSE(disjoint_set.in_same_set(0, 1));
disjoint_set.join(3, 4);
EXPECT_FALSE(disjoint_set.in_same_set(2, 3));
EXPECT_TRUE(disjoint_set.in_same_set(3, 4));
disjoint_set.join(1, 4);
EXPECT_TRUE(disjoint_set.in_same_set(1, 4));
EXPECT_TRUE(disjoint_set.in_same_set(1, 3));
EXPECT_TRUE(disjoint_set.in_same_set(2, 4));
EXPECT_FALSE(disjoint_set.in_same_set(0, 4));
}
} // namespace blender::tests
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