org.saynotobugs.confidence.rxjava3.quality.TransformsObservable Maven / Gradle / Ivy

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/*
 * Copyright 2022 dmfs GmbH
 *
 *
 * Licensed 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.saynotobugs.confidence.rxjava3.quality;

import io.reactivex.rxjava3.core.ObservableTransformer;
import io.reactivex.rxjava3.schedulers.TestScheduler;
import io.reactivex.rxjava3.subjects.PublishSubject;
import org.dmfs.jems2.Function;
import org.dmfs.jems2.iterable.Expanded;
import org.dmfs.jems2.iterable.Seq;
import org.dmfs.srcless.annotations.staticfactory.StaticFactories;
import org.saynotobugs.confidence.Assessment;
import org.saynotobugs.confidence.Description;
import org.saynotobugs.confidence.Quality;
import org.saynotobugs.confidence.description.Composite;
import org.saynotobugs.confidence.description.Indented;
import org.saynotobugs.confidence.description.Text;
import org.saynotobugs.confidence.quality.composite.AllOfFailingFast;
import org.saynotobugs.confidence.quality.composite.DescribedAs;
import org.saynotobugs.confidence.rxjava3.TransformerTestStep;
import org.saynotobugs.confidence.rxjava3.adapters.PublishSubjectAdapter;
import org.saynotobugs.confidence.rxjava3.adapters.RxTestObserver;

import static org.saynotobugs.confidence.description.LiteralDescription.COMMA_NEW_LINE;
import static org.saynotobugs.confidence.description.LiteralDescription.NEW_LINE;


@StaticFactories(value = "RxJava3", packageName = "org.saynotobugs.confidence.rxjava3")
public final class TransformsObservable implements Quality>>
{
    private final Iterable> mEvents;


    @SafeVarargs
    public TransformsObservable(TransformerTestStep... events)
    {
        this(new Seq<>(events));
    }


    public TransformsObservable(Iterable> events)
    {
        mEvents = events;
    }


    @Override
    public Assessment assessmentOf(Function> candidate)
    {
        TestScheduler t = new TestScheduler();
        RxTestObserver testAdapter = new RxTestObserver<>();
        PublishSubject upstream = PublishSubject.create();
        candidate.value(t).apply(upstream.hide()).subscribe(testAdapter);
        return new AllOfFailingFast>(COMMA_NEW_LINE,
            new Expanded<>(e -> e.qualities(t, new PublishSubjectAdapter<>(upstream)), mEvents)
        ).assessmentOf(testAdapter);
    }


    @Override
    public Description description()
    {
        TestScheduler t = new TestScheduler();
        PublishSubject upstream = PublishSubject.create();
        return new DescribedAs<>(
            orig -> new Composite(new Text("ObservableTransformer that transforms"), new Indented(new Composite(NEW_LINE, orig))),
            new AllOfFailingFast<>(COMMA_NEW_LINE,
                new Expanded<>(e -> e.qualities(t, new PublishSubjectAdapter<>(upstream)), mEvents)
            )).description();
    }
}