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   * Licensed to the Apache Software Foundation (ASF) under one
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   * 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,
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  package com.datastax.dse.driver.internal.core.cql.continuous.reactive;
  
  import static com.datastax.dse.driver.api.core.DseProtocolVersion.DSE_V1;
  import static org.assertj.core.api.Assertions.assertThat;
  
  import com.datastax.dse.driver.DseTestDataProviders;
  import com.datastax.dse.driver.DseTestFixtures;
  import com.datastax.dse.driver.api.core.DseProtocolVersion;
  import com.datastax.dse.driver.api.core.cql.continuous.reactive.ContinuousReactiveResultSet;
  import com.datastax.dse.driver.api.core.cql.reactive.ReactiveRow;
  import com.datastax.dse.driver.internal.core.cql.continuous.ContinuousCqlRequestAsyncProcessor;
  import com.datastax.dse.driver.internal.core.cql.continuous.ContinuousCqlRequestHandlerTestBase;
  import com.datastax.oss.driver.api.core.cql.ColumnDefinitions;
  import com.datastax.oss.driver.api.core.cql.ExecutionInfo;
  import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
  import com.datastax.oss.driver.internal.core.cql.PoolBehavior;
  import com.datastax.oss.driver.internal.core.cql.RequestHandlerTestHarness;
  import com.datastax.oss.driver.internal.core.session.DefaultSession;
  import com.tngtech.java.junit.dataprovider.UseDataProvider;
  import io.reactivex.Flowable;
  import java.util.List;
  import org.junit.Test;
  
  public class ContinuousCqlRequestReactiveProcessorTest extends ContinuousCqlRequestHandlerTestBase {
  
    @Test
    public void should_be_able_to_process_reactive_result_set() {
      ContinuousCqlRequestReactiveProcessor processor =
          new ContinuousCqlRequestReactiveProcessor(new ContinuousCqlRequestAsyncProcessor());
      assertThat(
              processor.canProcess(
                  UNDEFINED_IDEMPOTENCE_STATEMENT,
                  ContinuousCqlRequestReactiveProcessor.CONTINUOUS_REACTIVE_RESULT_SET))
          .isTrue();
    }
  
    @Test
    public void should_create_request_handler() {
      RequestHandlerTestHarness.Builder builder =
          continuousHarnessBuilder().withProtocolVersion(DSE_V1);
      try (RequestHandlerTestHarness harness = builder.build()) {
        ContinuousCqlRequestReactiveProcessor processor =
            new ContinuousCqlRequestReactiveProcessor(new ContinuousCqlRequestAsyncProcessor());
        assertThat(
                processor.process(
                    UNDEFINED_IDEMPOTENCE_STATEMENT,
                    harness.getSession(),
                    harness.getContext(),
                    "test"))
            .isInstanceOf(DefaultContinuousReactiveResultSet.class);
      }
    }
  
    @Test
    @UseDataProvider(value = "allDseProtocolVersions", location = DseTestDataProviders.class)
    public void should_complete_single_page_result(DseProtocolVersion version) {
      try (RequestHandlerTestHarness harness =
          continuousHarnessBuilder()
              .withProtocolVersion(version)
              .withResponse(node1, defaultFrameOf(DseTestFixtures.singleDseRow()))
              .build()) {
  
        DefaultSession session = harness.getSession();
        InternalDriverContext context = harness.getContext();
  
        ContinuousReactiveResultSet publisher =
            new ContinuousCqlRequestReactiveProcessor(new ContinuousCqlRequestAsyncProcessor())
                .process(UNDEFINED_IDEMPOTENCE_STATEMENT, session, context, "test");
  
        List<ReactiveRow> rows = Flowable.fromPublisher(publisher).toList().blockingGet();
  
        assertThat(rows).hasSize(1);
        ReactiveRow row = rows.get(0);
        assertThat(row.getString("message")).isEqualTo("hello, world");
        ExecutionInfo executionInfo = row.getExecutionInfo();
        assertThat(executionInfo.getCoordinator()).isEqualTo(node1);
        assertThat(executionInfo.getErrors()).isEmpty();
        assertThat(executionInfo.getIncomingPayload()).isEmpty();
        assertThat(executionInfo.getPagingState()).isNull();
        assertThat(executionInfo.getSpeculativeExecutionCount()).isEqualTo(0);
        assertThat(executionInfo.getSuccessfulExecutionIndex()).isEqualTo(0);
        assertThat(executionInfo.getWarnings()).isEmpty();
  
        Flowable<ExecutionInfo> execInfosFlowable =
            Flowable.fromPublisher(publisher.getExecutionInfos());
        assertThat(execInfosFlowable.toList().blockingGet()).containsExactly(executionInfo);
  
        Flowable<ColumnDefinitions> colDefsFlowable =
            Flowable.fromPublisher(publisher.getColumnDefinitions());
        assertThat(colDefsFlowable.toList().blockingGet())
            .containsExactly(row.getColumnDefinitions());
  
        Flowable<Boolean> wasAppliedFlowable = Flowable.fromPublisher(publisher.wasApplied());
        assertThat(wasAppliedFlowable.toList().blockingGet()).containsExactly(row.wasApplied());
      }
    }
  
    @Test
    @UseDataProvider(value = "allDseProtocolVersions", location = DseTestDataProviders.class)
    public void should_complete_multi_page_result(DseProtocolVersion version) {
      RequestHandlerTestHarness.Builder builder =
          continuousHarnessBuilder().withProtocolVersion(version);
      PoolBehavior node1Behavior = builder.customBehavior(node1);
      try (RequestHandlerTestHarness harness = builder.build()) {
  
        DefaultSession session = harness.getSession();
        InternalDriverContext context = harness.getContext();
  
        ContinuousReactiveResultSet publisher =
            new ContinuousCqlRequestReactiveProcessor(new ContinuousCqlRequestAsyncProcessor())
                .process(UNDEFINED_IDEMPOTENCE_STATEMENT, session, context, "test");
  
        Flowable<ReactiveRow> rowsPublisher = Flowable.fromPublisher(publisher).cache();
        rowsPublisher.subscribe();
  
        node1Behavior.setResponseSuccess(defaultFrameOf(DseTestFixtures.tenDseRows(1, false)));
        node1Behavior.setResponseSuccess(defaultFrameOf(DseTestFixtures.tenDseRows(2, true)));
  
        List<ReactiveRow> rows = rowsPublisher.toList().blockingGet();
        assertThat(rows).hasSize(20);
  
        ReactiveRow first = rows.get(0);
        ExecutionInfo firstExecutionInfo = first.getExecutionInfo();
        assertThat(firstExecutionInfo.getCoordinator()).isEqualTo(node1);
        assertThat(firstExecutionInfo.getErrors()).isEmpty();
        assertThat(firstExecutionInfo.getIncomingPayload()).isEmpty();
        assertThat(firstExecutionInfo.getPagingState()).isNotNull();
        assertThat(firstExecutionInfo.getSpeculativeExecutionCount()).isEqualTo(0);
        assertThat(firstExecutionInfo.getSuccessfulExecutionIndex()).isEqualTo(0);
        assertThat(firstExecutionInfo.getWarnings()).isEmpty();
  
        ReactiveRow inSecondPage = rows.get(10);
        ExecutionInfo secondExecutionInfo = inSecondPage.getExecutionInfo();
        assertThat(secondExecutionInfo.getCoordinator()).isEqualTo(node1);
        assertThat(secondExecutionInfo.getErrors()).isEmpty();
        assertThat(secondExecutionInfo.getIncomingPayload()).isEmpty();
        assertThat(secondExecutionInfo.getPagingState()).isNull();
        assertThat(secondExecutionInfo.getSpeculativeExecutionCount()).isEqualTo(0);
        assertThat(secondExecutionInfo.getSuccessfulExecutionIndex()).isEqualTo(0);
        assertThat(secondExecutionInfo.getWarnings()).isEmpty();
  
        Flowable<ExecutionInfo> execInfosFlowable =
            Flowable.fromPublisher(publisher.getExecutionInfos());
        assertThat(execInfosFlowable.toList().blockingGet())
            .containsExactly(firstExecutionInfo, secondExecutionInfo);
  
        Flowable<ColumnDefinitions> colDefsFlowable =
            Flowable.fromPublisher(publisher.getColumnDefinitions());
        assertThat(colDefsFlowable.toList().blockingGet())
            .containsExactly(first.getColumnDefinitions());
  
        Flowable<Boolean> wasAppliedFlowable = Flowable.fromPublisher(publisher.wasApplied());
        assertThat(wasAppliedFlowable.toList().blockingGet()).containsExactly(first.wasApplied());
      }
    }
  }
  