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package org.apache.james.backends.cassandra.versions;

import static org.assertj.core.api.Assertions.assertThat;

import java.util.Optional;

import org.apache.james.backends.cassandra.CassandraCluster;
import org.apache.james.backends.cassandra.CassandraClusterExtension;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;

class CassandraSchemaVersionDAOTest {
    @RegisterExtension
    static CassandraClusterExtension cassandraCluster = new CassandraClusterExtension(CassandraSchemaVersionModule.MODULE);

    private CassandraSchemaVersionDAO testee;

    @BeforeEach
    void setUp(CassandraCluster cassandra) {
        testee = new CassandraSchemaVersionDAO(cassandra.getConf());
    }

    @Test
    void getCurrentSchemaVersionShouldReturnEmptyWhenTableIsEmpty() {
        assertThat(testee.getCurrentSchemaVersion().block())
            .isEqualTo(Optional.empty());
    }

    @Test
    void getCurrentSchemaVersionShouldReturnVersionPresentInTheTable() {
        SchemaVersion version = new SchemaVersion(42);

        testee.updateVersion(version).block();

        assertThat(testee.getCurrentSchemaVersion().block()).contains(version);
    }

    @Test
    void getCurrentSchemaVersionShouldBeIdempotent() {
        SchemaVersion version = new SchemaVersion(42);

        testee.updateVersion(version.next()).block();
        testee.updateVersion(version).block();

        assertThat(testee.getCurrentSchemaVersion().block()).contains(version.next());
    }
}