/*
 * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * 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 io.helidon.common.reactive;

import org.junit.jupiter.api.Test;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsInstanceOf.instanceOf;

public class MultiCollectTest {

    @Test
    public void collectionSupplierNull() {
        TestSubscriber<Object> ts = new TestSubscriber<>();

        Multi.just(1)
                .collect(() -> null, (a, b) -> { })
        .subscribe(ts);

        assertThat(ts.getItems().isEmpty(), is(true));
        assertThat(ts.getLastError(), instanceOf(NullPointerException.class));
        assertThat(ts.isComplete(), is(false));
    }

    @Test
    public void collectionSupplierCrash() {
        TestSubscriber<Object> ts = new TestSubscriber<>();

        Multi.just(1)
                .collect(() -> {throw new IllegalArgumentException(); }, (a, b) -> { })
                .subscribe(ts);

        assertThat(ts.getItems().isEmpty(), is(true));
        assertThat(ts.getLastError(), instanceOf(IllegalArgumentException.class));
        assertThat(ts.isComplete(), is(false));
    }
}
