RxJava/src/test/java/io/reactivex/internal/operators/flowable/FlowableDoOnRequestTest.java at 2.x · appsou/RxJava · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
/**
 * Copyright 2016 Netflix, Inc.
 *
 * 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.reactivex.internal.operators.flowable;

import static org.junit.Assert.*;

import java.util.*;
import java.util.concurrent.atomic.AtomicBoolean;

import org.junit.*;

import io.reactivex.Flowable;
import io.reactivex.functions.*;
import io.reactivex.subscribers.DefaultSubscriber;

public class FlowableDoOnRequestTest {

    @Test
    public void testUnsubscribeHappensAgainstParent() {
        final AtomicBoolean unsubscribed = new AtomicBoolean(false);
        Flowable.just(1)
        //
                .doOnCancel(new Action() {
                    @Override
                    public void run() {
                        unsubscribed.set(true);
                    }
                })
                //
                .doOnRequest(new LongConsumer() {
                    @Override
                    public void accept(long n) {
                        // do nothing
                    }
                })
                //
                .subscribe();
        assertTrue(unsubscribed.get());
    }

    @Test
    public void testDoRequest() {
        final List<Long> requests = new ArrayList<Long>();
        Flowable.range(1, 5)
        //
                .doOnRequest(new LongConsumer() {
                    @Override
                    public void accept(long n) {
                        requests.add(n);
                    }
                })
                //
                .subscribe(new DefaultSubscriber<Integer>() {

                    @Override
                    public void onStart() {
                        request(3);
                    }

                    @Override
                    public void onComplete() {

                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onNext(Integer t) {
                        request(t);
                    }
                });
        assertEquals(Arrays.asList(3L,1L,2L,3L,4L,5L), requests);
    }

    @Test
    @Ignore("This is a 1.x architecture-specific test")
    public void dontRequestIfDownstreamRequestsLate() {
//        final List<Long> requested = new ArrayList<Long>();
//
//        Action1<Long> empty = Actions.empty();
//
//        final AtomicReference<Producer> producer = new AtomicReference<Producer>();
//
//        Observable.create(new OnSubscribe<Integer>() {
//            @Override
//            public void call(Subscriber<? super Integer> t) {
//                t.setProducer(new Producer() {
//                    @Override
//                    public void request(long n) {
//                        requested.add(n);
//                    }
//                });
//            }
//        }).doOnRequest(empty).subscribe(new Subscriber<Object>() {
//            @Override
//            public void onNext(Object t) {
//
//            }
//
//            @Override
//            public void onError(Throwable e) {
//
//            }
//
//            @Override
//            public void onCompleted() {
//
//            }
//
//            @Override
//            public void setProducer(Producer p) {
//                producer.set(p);
//            }
//        });
//
//        producer.get().request(1);
//
//        int s = requested.size();
//        if (s == 1) {
//            // this allows for an implementation that itself doesn't request
//            Assert.assertEquals(Arrays.asList(1L), requested);
//        } else {
//            Assert.assertEquals(Arrays.asList(0L, 1L), requested);
//        }
    }
}