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AdaptersTest.java
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AdaptersTest.java
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package com.github.bsideup.graphql.reactive;
import com.github.bsideup.graphql.reactive.support.AbstractTest;
import com.google.common.collect.ImmutableMap;
import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import graphql.ExecutionResult;
import graphql.GraphQL;
import graphql.schema.GraphQLSchema;
import io.reactivex.Flowable;
import io.reactivex.Single;
import org.junit.Test;
import org.reactivestreams.Publisher;
import java.util.concurrent.CompletableFuture;
import static org.assertj.core.api.Assertions.tuple;
public class AdaptersTest extends AbstractTest {
@Test
public void testCompletableFuture() throws Exception {
ReactiveExecutionStrategy strategy = new ReactiveExecutionStrategy();
GraphQLSchema schema = newQuerySchema(it -> it
.field(newStringField("a").dataFetcher(env -> CompletableFuture.completedFuture("static")))
);
ExecutionResult executionResult = new GraphQL(schema, strategy).execute("{ a }");
Flowable.fromPublisher((Publisher<Change>) executionResult.getData()).timestamp(scheduler).subscribe(subscriber);
subscriber
.assertChanges(it -> it.containsExactly(
tuple("00:000", "", ImmutableMap.of("a", "static"))
))
.assertComplete();
}
@Test
public void testCustomOverride() throws Exception {
ReactiveExecutionStrategy strategy = new ReactiveExecutionStrategy() {
@Override
protected Object adapt(Object result) {
if (result instanceof ListenableFuture) {
return Single.create(emitter -> {
ListenableFuture<Object> listenableFuture = (ListenableFuture<Object>) result;
Futures.addCallback(
listenableFuture,
new FutureCallback<Object>() {
@Override
public void onSuccess(Object result) {
emitter.onSuccess(result);
}
@Override
public void onFailure(Throwable e) {
emitter.onError(e);
}
}
);
}).toFlowable();
}
return super.adapt(result);
}
};
GraphQLSchema schema = newQuerySchema(it -> it
.field(newStringField("a").dataFetcher(env -> Futures.immediateFuture("static")))
);
ExecutionResult executionResult = new GraphQL(schema, strategy).execute("{ a }");
Flowable.fromPublisher((Publisher<Change>) executionResult.getData()).timestamp(scheduler).subscribe(subscriber);
subscriber
.assertChanges(it -> it.containsExactly(
tuple("00:000", "", ImmutableMap.of("a", "static"))
))
.assertComplete();
}
}