/*
 * 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.nexmark.model.sql;

import static org.hamcrest.core.IsEqual.equalTo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;

import com.google.common.collect.Iterables;
import java.math.BigDecimal;
import org.apache.beam.sdk.extensions.sql.impl.utils.CalciteUtils;
import org.apache.beam.sdk.schemas.Schema;
import org.apache.beam.sdk.testing.PAssert;
import org.apache.beam.sdk.testing.TestPipeline;
import org.apache.beam.sdk.testing.TestStream;
import org.apache.beam.sdk.transforms.SerializableFunction;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.Row;
import org.joda.time.DateTime;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

/** Unit tests for {@link RowSize}. */
public class RowSizeTest {

  private static final Schema ROW_TYPE =
      Schema.builder()
          .addByteField("f_tinyint")
          .addInt16Field("f_smallint")
          .addInt32Field("f_int")
          .addInt64Field("f_bigint")
          .addFloatField("f_float")
          .addDoubleField("f_double")
          .addDecimalField("f_decimal")
          .addBooleanField("f_boolean")
          .addField("f_time", CalciteUtils.TIME)
          .addField("f_date", CalciteUtils.DATE)
          .addDateTimeField("f_timestamp")
          .addField("f_char", CalciteUtils.CHAR)
          .addField("f_varchar", CalciteUtils.VARCHAR)
          .build();

  private static final long ROW_SIZE = 96L;

  private static final Row ROW =
      Row.withSchema(ROW_TYPE)
          .addValues(
              (byte) 1,
              (short) 2,
              (int) 3,
              (long) 4,
              (float) 5.12,
              (double) 6.32,
              new BigDecimal(7),
              false,
              new DateTime().withDate(2019, 03, 02),
              new DateTime(10L),
              new DateTime(11L),
              "12",
              "13")
          .build();

  @Rule public TestPipeline testPipeline = TestPipeline.create();
  @Rule public ExpectedException thrown = ExpectedException.none();

  @Test
  public void testCalculatesCorrectSize() throws Exception {
    assertEquals(ROW_SIZE, RowSize.of(ROW).sizeInBytes());
  }

  @Test
  public void testParDoConvertsToRecordSize() throws Exception {
    PCollection<Row> rows =
        testPipeline.apply(
            TestStream.create(ROW_TYPE.getRowCoder())
                .addElements(ROW)
                .advanceWatermarkToInfinity());

    PAssert.that(rows).satisfies(new CorrectSize());

    testPipeline.run();
  }

  static class CorrectSize implements SerializableFunction<Iterable<Row>, Void> {
    @Override
    public Void apply(Iterable<Row> input) {
      RowSize recordSize = RowSize.of(Iterables.getOnlyElement(input));
      assertThat(recordSize.sizeInBytes(), equalTo(ROW_SIZE));
      return null;
    }
  }
}
