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/*
* Copyright 2011-2016 David Karnok
*
* 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 ix;
import java.util.Iterator;
import org.junit.*;
public class ReplayTest {
@Test
public void normal() {
final int[] counter = { 0 };
Ix<Integer> source = Ix.range(1, 5)
.doOnNext(new IxConsumer<Integer>() {
@Override
public void accept(Integer v) {
counter[0]++;
}
})
.replay();
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
Assert.assertEquals(5, counter[0]);
}
@Test
public void lockstep() {
final int[] counter = { 0 };
Ix<Integer> source = Ix.range(1, 5)
.doOnNext(new IxConsumer<Integer>() {
@Override
public void accept(Integer v) {
counter[0]++;
}
})
.replay();
Iterator<Integer> it1 = source.iterator();
Iterator<Integer> it2 = source.iterator();
Assert.assertEquals(1, it1.next().intValue());
Assert.assertEquals(1, it2.next().intValue());
Assert.assertEquals(2, it1.next().intValue());
Assert.assertEquals(2, it2.next().intValue());
Assert.assertEquals(3, it1.next().intValue());
Assert.assertEquals(3, it2.next().intValue());
Assert.assertEquals(4, it1.next().intValue());
Assert.assertEquals(4, it2.next().intValue());
Assert.assertEquals(5, it1.next().intValue());
Assert.assertEquals(5, it2.next().intValue());
Assert.assertFalse(it1.hasNext());
Assert.assertFalse(it1.hasNext());
Assert.assertEquals(5, counter[0]);
}
@Test
public void empty() {
Ix<Integer> source = Ix.<Integer>empty().replay();
IxTestHelper.assertValues(source);
IxTestHelper.assertValues(source);
IxTestHelper.assertValues(source);
}
@Test
public void replaySizeNormal() {
final int[] counter = { 0 };
Ix<Integer> source = Ix.range(1, 5)
.doOnNext(new IxConsumer<Integer>() {
@Override
public void accept(Integer v) {
counter[0]++;
}
})
.replay(10);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
Assert.assertEquals(5, counter[0]);
}
@Test
public void replaySizeLimit() {
final int[] counter = { 0 };
Ix<Integer> source = Ix.range(1, 5)
.doOnNext(new IxConsumer<Integer>() {
@Override
public void accept(Integer v) {
counter[0]++;
}
})
.replay(2);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5);
IxTestHelper.assertValues(source, 4, 5);
IxTestHelper.assertValues(source, 4, 5);
Assert.assertEquals(5, counter[0]);
}
@Test
public void replaySelectorNormal() {
Ix<Integer> source = Ix.range(1, 5).replay(new IxFunction<Ix<Integer>, Iterable<Integer>>() {
@Override
public Iterable<Integer> apply(Ix<Integer> o) {
return Ix.zip(o, o.skip(1), new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
}
});
IxTestHelper.assertValues(source, 3, 5, 7, 9);
IxTestHelper.assertValues(source, 3, 5, 7, 9);
}
@Test
public void replaySizeSelectorLarge() {
Ix<Integer> source = Ix.range(1, 5).replay(10, new IxFunction<Ix<Integer>, Iterable<Integer>>() {
@Override
public Iterable<Integer> apply(Ix<Integer> o) {
return Ix.zip(o, o.skip(1), new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
}
});
IxTestHelper.assertValues(source, 3, 5, 7, 9);
IxTestHelper.assertValues(source, 3, 5, 7, 9);
}
@Test
public void replaySizeSelectorSmall() {
Ix<Integer> source = Ix.range(1, 5).replay(2, new IxFunction<Ix<Integer>, Iterable<Integer>>() {
@Override
public Iterable<Integer> apply(Ix<Integer> o) {
return Ix.zip(o, o.skip(1), new IxFunction2<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) {
return t1 + t2;
}
});
}
});
IxTestHelper.assertValues(source, 3, 5, 7, 9);
IxTestHelper.assertValues(source, 3, 5, 7, 9);
}
@Test
public void replaySizeSelectorInnerEffect() {
Ix<Integer> source = Ix.range(1, 5).replay(2, new IxFunction<Ix<Integer>, Iterable<Integer>>() {
@SuppressWarnings("unchecked")
@Override
public Iterable<Integer> apply(Ix<Integer> o) {
return Ix.concatArray(o, o);
}
});
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5, 4, 5);
IxTestHelper.assertValues(source, 1, 2, 3, 4, 5, 4, 5);
}
}