/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.beam.sdk.extensions.sql.impl.interpreter.operator.date;

import static org.junit.Assert.assertEquals;

import org.apache.calcite.avatica.util.TimeUnit;
import org.apache.calcite.sql.type.SqlTypeName;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

/** Unit tests for {@link TimeUnitUtils}. */
public class TimeUnitUtilsTest {
  @Rule public ExpectedException thrown = ExpectedException.none();

  @Test
  public void testReturnsInternalTimeUnitMultipliers() {
    assertEquals(
        TimeUnit.SECOND.multiplier,
        TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_SECOND));
    assertEquals(
        TimeUnit.MINUTE.multiplier,
        TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_MINUTE));
    assertEquals(
        TimeUnit.HOUR.multiplier,
        TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_HOUR));
    assertEquals(
        TimeUnit.DAY.multiplier,
        TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_DAY));
    assertEquals(
        TimeUnit.MONTH.multiplier,
        TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_MONTH));
    assertEquals(
        TimeUnit.YEAR.multiplier,
        TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_YEAR));
  }

  @Test
  public void testThrowsForUnsupportedIntervalType() {
    thrown.expect(IllegalArgumentException.class);
    TimeUnitUtils.timeUnitInternalMultiplier(SqlTypeName.INTERVAL_DAY_MINUTE);
  }
}
