/*
 * 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.runners.dataflow.worker;

import static org.hamcrest.core.IsInstanceOf.instanceOf;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;

import org.apache.beam.runners.dataflow.internal.IsmFormat;
import org.apache.beam.runners.dataflow.internal.IsmFormat.IsmRecordCoder;
import org.apache.beam.runners.dataflow.util.CloudObject;
import org.apache.beam.runners.dataflow.util.CloudObjects;
import org.apache.beam.runners.dataflow.util.PropertyNames;
import org.apache.beam.sdk.coders.BigEndianIntegerCoder;
import org.apache.beam.sdk.coders.BigEndianLongCoder;
import org.apache.beam.sdk.coders.ByteArrayCoder;
import org.apache.beam.sdk.coders.Coder;
import org.apache.beam.sdk.coders.VarIntCoder;
import org.apache.beam.sdk.coders.VoidCoder;
import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableList;
import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.ImmutableMap;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests for {@link RunnerHarnessCoderCloudObjectTranslatorRegistrar}. */
@RunWith(JUnit4.class)
public class RunnerHarnessCoderCloudObjectTranslatorRegistrarTest {
  @Test
  public void testCloudObjectToVarIntCoder() {
    Coder<?> coder =
        CloudObjects.coderFromCloudObject(
            CloudObject.fromSpec(
                ImmutableMap.of(PropertyNames.OBJECT_TYPE_NAME, "kind:var_int32")));
    assertThat(coder, instanceOf(VarIntCoder.class));
  }

  @Test
  public void testCloudObjectToBigEndianIntegerCoder() {
    Coder<?> coder =
        CloudObjects.coderFromCloudObject(
            CloudObject.fromSpec(
                ImmutableMap.of(PropertyNames.OBJECT_TYPE_NAME, "kind:fixed_big_endian_int32")));
    assertThat(coder, instanceOf(BigEndianIntegerCoder.class));
  }

  @Test
  public void testCloudObjectToBigEndianLongCoder() {
    Coder<?> coder =
        CloudObjects.coderFromCloudObject(
            CloudObject.fromSpec(
                ImmutableMap.of(PropertyNames.OBJECT_TYPE_NAME, "kind:fixed_big_endian_int64")));
    assertThat(coder, instanceOf(BigEndianLongCoder.class));
  }

  @Test
  public void testCloudObjectToVoidCoder() {
    Coder<?> coder =
        CloudObjects.coderFromCloudObject(
            CloudObject.fromSpec(ImmutableMap.of(PropertyNames.OBJECT_TYPE_NAME, "kind:void")));
    assertThat(coder, instanceOf(VoidCoder.class));
  }

  @Test
  public void testCloudObjectToIsmRecordCoder() {
    Coder<?> coder =
        CloudObjects.coderFromCloudObject(
            CloudObject.fromSpec(
                ImmutableMap.of(
                    PropertyNames.OBJECT_TYPE_NAME,
                    "kind:ism_record",
                    "num_shard_key_coders",
                    1L,
                    PropertyNames.COMPONENT_ENCODINGS,
                    ImmutableList.of(
                        ImmutableMap.of("@type", "kind:var_int32"),
                        ImmutableMap.of("@type", "kind:fixed_big_endian_int32"),
                        ImmutableMap.of("@type", "kind:bytes")))));
    assertThat(coder, instanceOf(IsmRecordCoder.class));
    IsmRecordCoder<?> ismRecordCoder = (IsmRecordCoder<?>) coder;
    assertEquals(1, ismRecordCoder.getNumberOfShardKeyCoders(ImmutableList.of()));
    // We expect 0 metadata shard key coders if it is unspecified.
    assertEquals(
        0, ismRecordCoder.getNumberOfShardKeyCoders(ImmutableList.of(IsmFormat.getMetadataKey())));
    assertEquals(
        ImmutableList.of(VarIntCoder.of(), BigEndianIntegerCoder.of(), ByteArrayCoder.of()),
        ismRecordCoder.getCoderArguments());
  }
}
