nl.topicus.jdbc.shaded.com.google.api.gax.rpc.PagingTest Maven / Gradle / Ivy

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package nl.topicus.jdbc.shaded.com.google.api.gax.rpc;

import nl.topicus.jdbc.shaded.com.google.api.core.ApiFutures;
import nl.topicus.jdbc.shaded.com.google.api.gax.paging.FixedSizeCollection;
import nl.topicus.jdbc.shaded.com.google.api.gax.paging.Page;
import nl.topicus.jdbc.shaded.com.google.api.gax.rpc.testing.FakeCallContext;
import nl.topicus.jdbc.shaded.com.google.api.gax.rpc.testing.FakeCallableFactory;
import nl.topicus.jdbc.shaded.com.google.api.gax.rpc.testing.FakeChannel;
import nl.topicus.jdbc.shaded.com.google.api.gax.rpc.testing.FakePagedApi.ListIntegersPagedResponse;
import nl.topicus.jdbc.shaded.com.google.api.gax.rpc.testing.FakePagedApi.ListIntegersPagedResponseFactory;
import nl.topicus.jdbc.shaded.com.google.api.gax.rpc.testing.FakeTransportChannel;
import nl.topicus.jdbc.shaded.com.google.api.pathtemplate.ValidationException;
import nl.topicus.jdbc.shaded.com.google.common.collect.ImmutableList;
import nl.topicus.jdbc.shaded.com.google.common.truth.Truth;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.ArgumentCaptor;
import org.mockito.Mockito;

@RunWith(JUnit4.class)
public class PagingTest {
  private ClientContext clientContext;

  @Before
  public void setUp() {
    clientContext =
        ClientContext.newBuilder()
            .setDefaultCallContext(FakeCallContext.createDefault())
            .setTransportChannel(FakeTransportChannel.create(new FakeChannel()))
            .build();
  }

  @SuppressWarnings("unchecked")
  UnaryCallable> callIntList = Mockito.mock(UnaryCallable.class);

  @Test
  public void nonPaged() {
    ArgumentCaptor requestCapture = ArgumentCaptor.forClass(Integer.class);
    Mockito.when(callIntList.futureCall(requestCapture.capture(), (ApiCallContext) Mockito.any()))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(0, 1, 2)))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(3, 4)))
        .thenReturn(ApiFutures.immediateFuture(Collections.emptyList()));
    UnaryCallable> callable =
        FakeCallableFactory.createUnpagedCallable(
            callIntList,
            PagedCallSettings.newBuilder(new ListIntegersPagedResponseFactory()).build(),
            clientContext);
    Truth.assertThat(ImmutableList.copyOf(callable.call(0))).containsExactly(0, 1, 2).inOrder();
    Truth.assertThat(ImmutableList.copyOf(callable.call(2))).containsExactly(3, 4).inOrder();
    Truth.assertThat(ImmutableList.copyOf(callable.call(4))).isEmpty();
    Truth.assertThat(requestCapture.getAllValues()).containsExactly(0, 2, 4).inOrder();
  }

  @Test
  public void paged() {
    ArgumentCaptor requestCapture = ArgumentCaptor.forClass(Integer.class);
    Mockito.when(callIntList.futureCall(requestCapture.capture(), (ApiCallContext) Mockito.any()))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(0, 1, 2)))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(3, 4)))
        .thenReturn(ApiFutures.immediateFuture(Collections.emptyList()));
    UnaryCallable callable =
        FakeCallableFactory.createPagedCallable(
            callIntList,
            PagedCallSettings.newBuilder(new ListIntegersPagedResponseFactory()).build(),
            clientContext);
    Truth.assertThat(ImmutableList.copyOf(callable.call(0).iterateAll()))
        .containsExactly(0, 1, 2, 3, 4)
        .inOrder();
    Truth.assertThat(requestCapture.getAllValues()).containsExactly(0, 2, 4).inOrder();
  }

  @Test
  public void pagedByPage() {
    ArgumentCaptor requestCapture = ArgumentCaptor.forClass(Integer.class);
    Mockito.when(callIntList.futureCall(requestCapture.capture(), (ApiCallContext) Mockito.any()))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(0, 1, 2)))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(3, 4)))
        .thenReturn(ApiFutures.immediateFuture(Collections.emptyList()));

    Page page =
        FakeCallableFactory.createPagedCallable(
                callIntList,
                PagedCallSettings.newBuilder(new ListIntegersPagedResponseFactory()).build(),
                clientContext)
            .call(0)
            .getPage();

    Truth.assertThat(page.getValues()).containsExactly(0, 1, 2).inOrder();
    Truth.assertThat(page.hasNextPage()).isTrue();

    page = page.getNextPage();
    Truth.assertThat(page.getValues()).containsExactly(3, 4).inOrder();
    Truth.assertThat(page.hasNextPage()).isTrue();

    page = page.getNextPage();
    Truth.assertThat(page.getValues()).isEmpty();
    Truth.assertThat(page.hasNextPage()).isFalse();
    Truth.assertThat(page.getNextPage()).isNull();
    Truth.assertThat(requestCapture.getAllValues()).containsExactly(0, 2, 4).inOrder();
  }

  @Test
  public void pagedByFixedSizeCollection() {
    ArgumentCaptor requestCapture = ArgumentCaptor.forClass(Integer.class);
    Mockito.when(callIntList.futureCall(requestCapture.capture(), (ApiCallContext) Mockito.any()))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(0, 1, 2)))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(3, 4)))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(5, 6, 7)))
        .thenReturn(ApiFutures.immediateFuture(Collections.emptyList()));
    FixedSizeCollection fixedSizeCollection =
        FakeCallableFactory.createPagedCallable(
                callIntList,
                PagedCallSettings.newBuilder(new ListIntegersPagedResponseFactory()).build(),
                clientContext)
            .call(0)
            .expandToFixedSizeCollection(5);

    Truth.assertThat(fixedSizeCollection.getValues()).containsExactly(0, 1, 2, 3, 4).inOrder();
    Truth.assertThat(fixedSizeCollection.getNextCollection().getValues())
        .containsExactly(5, 6, 7)
        .inOrder();
    Truth.assertThat(requestCapture.getAllValues()).containsExactly(0, 2, 4, 7).inOrder();
  }

  @Test(expected = ValidationException.class)
  public void pagedFixedSizeCollectionTooManyElements() {
    Mockito.when(callIntList.futureCall((Integer) Mockito.any(), (ApiCallContext) Mockito.any()))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(0, 1, 2)))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(3, 4)))
        .thenReturn(ApiFutures.immediateFuture(Collections.emptyList()));

    FakeCallableFactory.createPagedCallable(
            callIntList,
            PagedCallSettings.newBuilder(new ListIntegersPagedResponseFactory()).build(),
            clientContext)
        .call(0)
        .expandToFixedSizeCollection(4);
  }

  @Test(expected = ValidationException.class)
  public void pagedFixedSizeCollectionTooSmallCollectionSize() {
    Mockito.when(callIntList.futureCall((Integer) Mockito.any(), (ApiCallContext) Mockito.any()))
        .thenReturn(ApiFutures.immediateFuture(Arrays.asList(0, 1)))
        .thenReturn(ApiFutures.immediateFuture(Collections.emptyList()));

    FakeCallableFactory.createPagedCallable(
            callIntList,
            PagedCallSettings.newBuilder(new ListIntegersPagedResponseFactory()).build(),
            clientContext)
        .call(0)
        .expandToFixedSizeCollection(2);
  }
}