/*
* Copyright 2014 Goldman Sachs.
*
* 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 com.gs.collections.impl.set.mutable;
import java.util.Collections;
import java.util.Iterator;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import com.gs.collections.api.LazyIterable;
import com.gs.collections.api.RichIterable;
import com.gs.collections.api.bag.sorted.MutableSortedBag;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.Function0;
import com.gs.collections.api.block.function.Function2;
import com.gs.collections.api.collection.MutableCollection;
import com.gs.collections.api.map.MapIterable;
import com.gs.collections.api.set.MutableSet;
import com.gs.collections.api.set.UnsortedSetIterable;
import com.gs.collections.api.tuple.Pair;
import com.gs.collections.impl.bag.sorted.mutable.TreeBag;
import com.gs.collections.impl.block.factory.Predicates;
import com.gs.collections.impl.list.Interval;
import com.gs.collections.impl.list.mutable.FastList;
import com.gs.collections.impl.test.Verify;
import org.junit.Assert;
import org.junit.Test;
public class MultiReaderUnifiedSetTest extends MultiReaderMutableCollectionTestCase
{
@Override
protected <T> MutableSet<T> newWith(T... littleElements)
{
return MultiReaderUnifiedSet.newSetWith(littleElements);
}
@Override
@Test
public void asSynchronized()
{
Verify.assertInstanceOf(SynchronizedMutableSet.class, MultiReaderUnifiedSet.newSet().asSynchronized());
}
@Override
@Test
public void select()
{
super.select();
Verify.assertContainsAll(MultiReaderUnifiedSet.newSetWith(1, 2, 3, 4, 5).select(Predicates.lessThan(3)), 1, 2);
Verify.assertContainsAll(MultiReaderUnifiedSet.newSetWith(-1, 2, 3, 4, 5).select(Predicates.lessThan(3),
FastList.<Integer>newList()), -1, 2);
}
@Override
@Test
public void reject()
{
super.reject();
Verify.assertContainsAll(MultiReaderUnifiedSet.newSetWith(1, 2, 3, 4).reject(Predicates.lessThan(3)), 3, 4);
Verify.assertContainsAll(MultiReaderUnifiedSet.newSetWith(1, 2, 3, 4).reject(Predicates.lessThan(3),
FastList.<Integer>newList()), 3, 4);
}
@Override
@Test
public void getFirst()
{
Assert.assertNotNull(this.newWith(1, 2, 3).getFirst());
Assert.assertNull(this.newWith().getFirst());
}
@Override
@Test
public void getLast()
{
Assert.assertNotNull(this.newWith(1, 2, 3).getLast());
Assert.assertNull(this.newWith().getLast());
}
@Override
@Test
public void iterator()
{
Verify.assertThrows(UnsupportedOperationException.class, () -> MultiReaderUnifiedSet.newSet().iterator());
}
@Test
public void unifiedSetToString()
{
MutableSet<Integer> set = MultiReaderUnifiedSet.newSetWith(1, 2);
String s = set.toString();
Assert.assertTrue("[1, 2]".equals(s) || "[2, 1]".equals(s));
}
@Override
@Test
public void isEmpty()
{
MultiReaderUnifiedSet<String> set = MultiReaderUnifiedSet.newSet();
this.assertIsEmpty(true, set);
set.add("stuff");
this.assertIsEmpty(false, set);
set.remove("stuff");
this.assertIsEmpty(true, set);
set.add("Bon");
set.add("Jovi");
this.assertIsEmpty(false, set);
set.remove("Jovi");
this.assertIsEmpty(false, set);
set.clear();
this.assertIsEmpty(true, set);
}
private void assertIsEmpty(boolean isEmpty, MultiReaderUnifiedSet<?> set)
{
Assert.assertEquals(isEmpty, set.isEmpty());
Assert.assertEquals(!isEmpty, set.notEmpty());
}
@Override
@Test
public void testToString()
{
MutableCollection<Object> collection = this.newWith(1, 2);
Assert.assertTrue(
"[1, 2]".equals(collection.toString())
|| "[2, 1]".equals(collection.toString()));
}
@Override
@Test
public void makeString()
{
MutableCollection<Object> collection = this.newWith(1, 2, 3);
Assert.assertEquals(collection.toString(), '[' + collection.makeString() + ']');
}
@Override
@Test
public void appendString()
{
MutableCollection<Object> collection = this.newWith(1, 2, 3);
Appendable builder = new StringBuilder();
collection.appendString(builder);
Assert.assertEquals(collection.toString(), '[' + builder.toString() + ']');
}
@Override
@Test
public void asUnmodifiable()
{
Verify.assertInstanceOf(UnmodifiableMutableSet.class, this.newWith().asUnmodifiable());
}
@Test
public void union()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> union = set.union(UnifiedSet.newSetWith("a", "b", "c", "1"));
Verify.assertSize(set.size() + 3, union);
Assert.assertTrue(union.containsAllIterable(Interval.oneTo(set.size()).collect(String::valueOf)));
Verify.assertContainsAll(union, "a", "b", "c");
Assert.assertEquals(set, set.union(UnifiedSet.newSetWith("1")));
}
@Test
public void unionInto()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> union = set.unionInto(UnifiedSet.newSetWith("a", "b", "c", "1"), UnifiedSet.<String>newSet());
Verify.assertSize(set.size() + 3, union);
Assert.assertTrue(union.containsAllIterable(Interval.oneTo(set.size()).collect(String::valueOf)));
Verify.assertContainsAll(union, "a", "b", "c");
Assert.assertEquals(set, set.unionInto(UnifiedSet.newSetWith("1"), UnifiedSet.<String>newSet()));
}
@Test
public void intersect()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> intersect = set.intersect(UnifiedSet.newSetWith("a", "b", "c", "1"));
Verify.assertSize(1, intersect);
Assert.assertEquals(UnifiedSet.newSetWith("1"), intersect);
Verify.assertEmpty(set.intersect(UnifiedSet.newSetWith("not present")));
}
@Test
public void intersectInto()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> intersect = set.intersectInto(UnifiedSet.newSetWith("a", "b", "c", "1"), UnifiedSet.<String>newSet());
Verify.assertSize(1, intersect);
Assert.assertEquals(UnifiedSet.newSetWith("1"), intersect);
Verify.assertEmpty(set.intersectInto(UnifiedSet.newSetWith("not present"), UnifiedSet.<String>newSet()));
}
@Test
public void difference()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> difference = set.difference(UnifiedSet.newSetWith("2", "3", "4", "not present"));
Assert.assertEquals(UnifiedSet.newSetWith("1"), difference);
Assert.assertEquals(set, set.difference(UnifiedSet.newSetWith("not present")));
}
@Test
public void differenceInto()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> difference = set.differenceInto(UnifiedSet.newSetWith("2", "3", "4", "not present"), UnifiedSet.<String>newSet());
Assert.assertEquals(UnifiedSet.newSetWith("1"), difference);
Assert.assertEquals(set, set.differenceInto(UnifiedSet.newSetWith("not present"), UnifiedSet.<String>newSet()));
}
@Test
public void symmetricDifference()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> difference = set.symmetricDifference(UnifiedSet.newSetWith("2", "3", "4", "5", "not present"));
Verify.assertContains("1", difference);
Assert.assertTrue(difference.containsAllIterable(Interval.fromTo(set.size() + 1, 5).collect(String::valueOf)));
for (int i = 2; i <= set.size(); i++)
{
Verify.assertNotContains(String.valueOf(i), difference);
}
Verify.assertSize(set.size() + 1, set.symmetricDifference(UnifiedSet.newSetWith("not present")));
}
@Test
public void symmetricDifferenceInto()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<String> difference = set.symmetricDifferenceInto(
UnifiedSet.newSetWith("2", "3", "4", "5", "not present"),
UnifiedSet.<String>newSet());
Verify.assertContains("1", difference);
Assert.assertTrue(difference.containsAllIterable(Interval.fromTo(set.size() + 1, 5).collect(String::valueOf)));
for (int i = 2; i <= set.size(); i++)
{
Verify.assertNotContains(String.valueOf(i), difference);
}
Verify.assertSize(
set.size() + 1,
set.symmetricDifferenceInto(UnifiedSet.newSetWith("not present"), UnifiedSet.<String>newSet()));
}
@Test
public void isSubsetOf()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
Assert.assertTrue(set.isSubsetOf(UnifiedSet.newSetWith("1", "2", "3", "4", "5")));
}
@Test
public void isProperSubsetOf()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
Assert.assertTrue(set.isProperSubsetOf(UnifiedSet.newSetWith("1", "2", "3", "4", "5")));
Assert.assertFalse(set.isProperSubsetOf(set));
}
@Test
public void powerSet()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
MutableSet<UnsortedSetIterable<String>> powerSet = set.powerSet();
Verify.assertSize((int) StrictMath.pow(2, set.size()), powerSet);
Verify.assertContains(UnifiedSet.<String>newSet(), powerSet);
Verify.assertContains(set, powerSet);
}
@Test
public void cartesianProduct()
{
MutableSet<String> set = MultiReaderUnifiedSet.newSetWith("1", "2", "3", "4");
LazyIterable<Pair<String, String>> cartesianProduct = set.cartesianProduct(UnifiedSet.newSetWith("One", "Two"));
Verify.assertIterableSize(set.size() * 2, cartesianProduct);
Assert.assertEquals(
set,
cartesianProduct
.select(Predicates.attributeEqual((Function<Pair<?, String>, String>) Pair::getTwo, "One"))
.collect((Function<Pair<String, ?>, String>) Pair::getOne).toSet());
}
@Override
@Test
public void aggregateByMutating()
{
Function0<AtomicInteger> valueCreator = AtomicInteger::new;
MutableCollection<Integer> collection = this.newWith(1, 1, 1, 2, 2, 3);
MapIterable<String, AtomicInteger> aggregation = collection.aggregateInPlaceBy(String::valueOf, valueCreator, AtomicInteger::addAndGet);
Assert.assertEquals(1, aggregation.get("1").intValue());
Assert.assertEquals(2, aggregation.get("2").intValue());
Assert.assertEquals(3, aggregation.get("3").intValue());
}
@Override
@Test
public void aggregateByNonMutating()
{
Function0<Integer> valueCreator = () -> 0;
Function2<Integer, Integer, Integer> sumAggregator = (integer1, integer2) -> integer1 + integer2;
MutableCollection<Integer> collection = this.newWith(1, 1, 1, 2, 2, 3);
MapIterable<String, Integer> aggregation = collection.aggregateBy(String::valueOf, valueCreator, sumAggregator);
Assert.assertEquals(1, aggregation.get("1").intValue());
Assert.assertEquals(2, aggregation.get("2").intValue());
Assert.assertEquals(3, aggregation.get("3").intValue());
}
@Test
public void withReadLockAndDelegate()
{
MultiReaderUnifiedSet<Integer> set = MultiReaderUnifiedSet.newSetWith(1);
Object[] result = new Object[1];
set.withReadLockAndDelegate(delegate -> {
result[0] = delegate.getFirst();
this.verifyDelegateIsUnmodifiable(delegate);
});
Assert.assertNotNull(result[0]);
}
@Test
public void withWriteLockAndDelegate()
{
MultiReaderUnifiedSet<Integer> set = MultiReaderUnifiedSet.newSetWith(2);
AtomicReference<MutableSet<?>> delegateList = new AtomicReference<>();
AtomicReference<Iterator<?>> iterator = new AtomicReference<>();
set.withWriteLockAndDelegate(delegate -> {
delegate.add(1);
delegate.add(2);
delegate.add(3);
delegate.add(4);
delegateList.set(delegate);
iterator.set(delegate.iterator());
});
Assert.assertEquals(UnifiedSet.newSetWith(1, 2, 3, 4), set);
Verify.assertThrows(NullPointerException.class, () -> iterator.get().hasNext());
Verify.assertThrows(NullPointerException.class, () -> delegateList.get().iterator());
}
private void verifyDelegateIsUnmodifiable(MutableSet<Integer> delegate)
{
Verify.assertThrows(UnsupportedOperationException.class, () -> delegate.add(2));
Verify.assertThrows(UnsupportedOperationException.class, () -> delegate.remove(0));
}
@Override
@Test
public void toSortedBag_natural_ordering()
{
RichIterable<Integer> integers = this.newWith(1, 2, 5, 3, 4);
MutableSortedBag<Integer> bag = integers.toSortedBag();
Verify.assertSortedBagsEqual(TreeBag.newBagWith(1, 2, 3, 4, 5), bag);
}
@Override
@Test
public void toSortedBag_with_comparator()
{
RichIterable<Integer> integers = this.newWith(2, 4, 1, 3);
MutableSortedBag<Integer> bag = integers.toSortedBag(Collections.<Integer>reverseOrder());
Verify.assertSortedBagsEqual(TreeBag.newBagWith(Collections.<Integer>reverseOrder(), 4, 3, 2, 1), bag);
}
@Override
@Test(expected = NullPointerException.class)
public void toSortedBag_with_null()
{
this.newWith(3, 4, null, 1, 2).toSortedBag();
}
@Override
@Test
public void toSortedBagBy()
{
RichIterable<Integer> integers = this.newWith(2, 4, 1, 3);
MutableSortedBag<Integer> bag = integers.toSortedBagBy(String::valueOf);
Verify.assertSortedBagsEqual(TreeBag.newBagWith(1, 2, 3, 4), bag);
}
}