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Supplementary utilities for classes that belong to java.util, or are considered essential as to justify existence in java.util.
/* Copyright (c) 2019 LibJ
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* You should have received a copy of The MIT License (MIT) along with this
* program. If not, see consumer = list1 -> {
list1.add((double)10);
test.run();
list1.removeIndex(0);
test.run();
final DoubleListIterator i = list1.listIterator();
i.add((double)10);
test.run();
i.previous();
i.remove();
test.run();
};
consumer.accept(list);
consumer.accept(sl1);
consumer.accept(sl2);
consumer.accept(sl11);
consumer.accept(sl12);
consumer.accept(sl111);
consumer.accept(sl121);
consumer.accept(sl21);
consumer.accept(sl22);
consumer.accept(sl211);
consumer.accept(sl221);
consumer.accept(slx1);
consumer.accept(slx2);
consumer.accept(slx3);
}
private static ArrayDoubleList[] newSubLists() {
final ArrayDoubleList[] l = new ArrayDoubleList[30];
l[0] = new ArrayDoubleList((double)0, (double)1, (double)2, (double)3, (double)4, (double)5, (double)6, (double)7, (double)8, (double)9, (double)10, (double)11, (double)12, (double)13, (double)14, (double)15, (double)16, (double)17, (double)18, (double)19);
l[1] = l[0].subList(2, 11);
l[2] = l[0].subList(11, 16);
l[3] = l[0].subList(16, 18);
l[4] = l[0].subList(18, 20);
l[5] = l[0].subList(0, 5);
l[6] = l[0].subList(5, 10);
l[7] = l[0].subList(10, 15);
l[8] = l[0].subList(15, 20);
l[9] = l[5].subList(0, 2);
l[10] = l[5].subList(2, 4);
l[11] = l[6].subList(0, 5);
l[12] = l[7].subList(1, 5);
l[13] = l[8].subList(0, 4);
l[14] = l[8].subList(5, 5);
l[15] = l[9].subList(0, 1);
l[16] = l[10].subList(1, 2);
l[17] = l[11].subList(0, 0);
l[18] = l[11].subList(1, 4);
l[19] = l[12].subList(0, 4);
l[20] = l[13].subList(1, 3);
l[21] = l[13].subList(4, 4);
l[22] = l[15].subList(0, 0);
l[23] = l[16].subList(1, 1);
l[24] = l[17].subList(0, 0);
l[25] = l[18].subList(2, 3);
l[26] = l[19].subList(0, 1);
l[27] = l[19].subList(2, 2);
l[28] = l[19].subList(3, 4);
l[29] = l[20].subList(1, 2);
return l;
}
private static void assertSubListsEaual(final ArrayDoubleList[] ... lists) {
for (int i = 1; i < lists.length; ++i) {
final ArrayDoubleList[] a = lists[i - 1];
final ArrayDoubleList[] b = lists[i];
for (int j = 0; j < a.length; ++j)
Assert.assertEquals((char)('a' + i - 1) + "[" + j + "] != " + (char)('a' + i) + "[" + j + "]: ", a[j], b[j]);
}
}
@Test
public void testSubLists() {
final ArrayDoubleList[] baseline = newSubLists();
final ArrayDoubleList[] a = newSubLists();
final ArrayDoubleList[] b = newSubLists();
final ArrayDoubleList[] c = newSubLists();
assertSubListsEaual(a, b, c);
a[0].add(0, (double)-1);
b[5].add(0, (double)-1);
c[9].add(0, (double)-1);
assertSubListsEaual(a, b, c);
a[0].removeIndex(0);
b[5].removeIndex(0);
c[9].removeIndex(0);
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[0].addAll(2, new double[] {2, 2});
b[1].addAll(0, new double[] {2, 2});
c[10].addAll(0, new double[] {2, 2});
assertSubListsEaual(a, b, c);
a[0].removeIndex(2);
a[0].removeIndex(2);
b[1].removeIndex(0);
b[1].removeIndex(0);
c[5].removeIndex(2);
c[5].removeIndex(2);
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[0].addAll(8, Arrays.asList((double)8, (double)8));
b[11].addAll(3, Arrays.asList((double)8, (double)8));
c[25].addAll(0, Arrays.asList((double)8, (double)8));
assertSubListsEaual(a, b, c);
a[0].remove((double)8);
a[0].remove((double)8);
b[11].remove((double)8);
b[11].remove((double)8);
c[25].remove((double)8);
c[25].remove((double)8);
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[0].addAll(8, (DoubleCollection)new ArrayDoubleList((double)-8, (double)-8));
b[11].addAll(3, (DoubleCollection)new ArrayDoubleList((double)-8, (double)-8));
c[25].addAll(0, (DoubleCollection)new ArrayDoubleList((double)-8, (double)-8));
assertSubListsEaual(a, b, c);
a[0].removeAll((double)-8);
b[11].removeAll((double)-8);
c[25].removeAll((double)-8);
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[21].add((double)99);
assertEquals(99, a[0].get(19));
assertEquals(99, a[8].get(4));
assertEquals(5, a[13].size());
a[21].remove((double)99);
assertEquals(19, a[0].get(19));
assertEquals(19, a[8].get(4));
assertEquals(4, a[13].size());
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[21].addAll(Arrays.asList((double)99, (double)99));
assertEquals(99, a[0].get(19));
assertEquals(99, a[0].get(20));
assertEquals(99, a[8].get(4));
assertEquals(99, a[8].get(5));
assertEquals(6, a[13].size());
a[21].removeAll((double)99);
assertEquals(19, a[0].get(19));
assertEquals(19, a[8].get(4));
assertEquals(4, a[13].size());
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[17].add((double)99);
assertEquals(99, a[0].get(5));
assertEquals(99, a[6].get(0));
assertEquals(99, a[11].get(0));
assertEquals(0, a[24].size());
a[17].remove((double)99);
assertEquals(5, a[0].get(5));
assertEquals(5, a[6].get(0));
assertEquals(5, a[11].get(0));
assertEquals(0, a[24].size());
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
final DoubleListIterator ia = a[0].listIterator(8);
ia.add((double)99);
final DoubleListIterator ib = b[6].listIterator(3);
ib.add((double)99);
final DoubleListIterator ic = c[25].listIterator(0);
ic.add((double)99);
assertSubListsEaual(a, b, c);
ia.previous();
ia.remove();
ib.previous();
ib.remove();
ic.previous();
ic.remove();
assertSubListsEaual(a, b, c);
assertSubListsEaual(baseline, a);
a[0].clear();
for (int i = 1; i < a.length; ++i)
Assert.assertEquals("a[" + (i - 1) + "] != " + "a[" + i + "]: ", a[i - 1].size(), a[i].size());
a[0].add((double)100);
for (int i = 2; i < a.length; ++i)
Assert.assertEquals("a[" + (i - 1) + "] != " + "a[" + i + "]: ", a[i - 1].size(), a[i].size());
a[0].removeIndex(0);
a[1].add((double)100);
assertEquals(100, a[0].get(0));
a[0].removeIndex(0);
assertTrue(a[1].isEmpty());
a[26].add((double)100);
assertEquals(100, a[19].get(0));
assertEquals(100, a[12].get(0));
assertEquals(100, a[7].get(0));
assertEquals(100, a[0].get(0));
assertTrue(a[1].isEmpty());
assertTrue(a[2].isEmpty());
// ----------------------------------------------------------------------------------------------------------------------------------
// | 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
// ----------------------------------------------------------------------------------------------------------------------------------
// | 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 |
// ------ ------ ------ ------
}
@Test
public void testList() {
final ArrayDoubleList list = new ArrayDoubleList();
testList(list);
}
@Test
public void testSubList() {
final ArrayDoubleList list = new ArrayDoubleList((double)-7, (double)-6, (double)-5, (double)-4, (double)-3, (double)-2, (double)-1);
final ArrayDoubleList subList = list.subList(3, 3);
testList(subList);
assertArrayEquals(new double[] {(double)-7, (double)-6, (double)-5, (double)4, (double)6, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99, (double)-4, (double)-3, (double)-2, (double)-1}, list.toArray());
// list.removeIndex(1);
// assertArrayEquals(new double[] {4, 6, 7, 7, 10, 11, 99, 99}, subList.toArray());
//
// list.removeIndex(4);
// assertArrayEquals(new double[] {4, 7, 7, 10, 11, 99, 99}, subList.toArray());
//
// list.removeIndex(10);
// assertArrayEquals(new double[] {4, 7, 7, 10, 11, 99}, subList.toArray());
}
@Test
public void testSubSubList() {
final ArrayDoubleList list = new ArrayDoubleList((double)-7, (double)-6, (double)-5, (double)-4, (double)-3, (double)-2, (double)-1);
final ArrayDoubleList subList = list.subList(2, 5);
try {
subList.subList(4, 4);
fail("Expected IndexOutOfBoundsException");
}
catch (final IndexOutOfBoundsException e) {
}
final ArrayDoubleList subSubList = subList.subList(2, 2);
testList(subSubList);
assertArrayEquals(new double[] {(double)-5, (double)-4, (double)4, (double)6, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99, (double)-3}, subList.toArray());
assertArrayEquals(new double[] {(double)-7, (double)-6, (double)-5, (double)-4, (double)4, (double)6, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99, (double)-3, (double)-2, (double)-1}, list.toArray());
list.removeIndex(1);
assertArrayEquals(new double[] {(double)-5, (double)-4, (double)4, (double)6, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99, (double)-3}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)6, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99}, subSubList.toArray());
list.removeIndex(4);
assertArrayEquals(new double[] {(double)-5, (double)-4, (double)4, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99, (double)-3}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99}, subSubList.toArray());
list.removeIndex(10);
assertArrayEquals(new double[] {(double)-5, (double)-4, (double)4, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)7, (double)7, (double)10, (double)11, (double)99, (double)99}, subSubList.toArray());
subList.removeIndex(4);
assertArrayEquals(new double[] {(double)-7, (double)-5, (double)-4, (double)4, (double)7, (double)10, (double)11, (double)99, (double)99, (double)-2, (double)-1}, list.toArray());
assertArrayEquals(new double[] {(double)-5, (double)-4, (double)4, (double)7, (double)10, (double)11, (double)99, (double)99}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)7, (double)10, (double)11, (double)99, (double)99}, subSubList.toArray());
subList.removeIndex(7);
assertArrayEquals(new double[] {(double)-7, (double)-5, (double)-4, (double)4, (double)7, (double)10, (double)11, (double)99, (double)-2, (double)-1}, list.toArray());
assertArrayEquals(new double[] {(double)-5, (double)-4, (double)4, (double)7, (double)10, (double)11, (double)99}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)7, (double)10, (double)11, (double)99}, subSubList.toArray());
subList.removeIndex(1);
assertArrayEquals(new double[] {(double)-7, (double)-5, (double)4, (double)7, (double)10, (double)11, (double)99, (double)-2, (double)-1}, list.toArray());
assertArrayEquals(new double[] {(double)-5, (double)4, (double)7, (double)10, (double)11, (double)99}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)7, (double)10, (double)11, (double)99}, subSubList.toArray());
subSubList.removeIndex(2);
assertArrayEquals(new double[] {(double)-7, (double)-5, (double)4, (double)7, (double)11, (double)99, (double)-2, (double)-1}, list.toArray());
assertArrayEquals(new double[] {(double)-5, (double)4, (double)7, (double)11, (double)99}, subList.toArray());
assertArrayEquals(new double[] {(double)4, (double)7, (double)11, (double)99}, subSubList.toArray());
Assert.assertEquals(list, list.clone());
Assert.assertEquals(subList, subList.clone());
Assert.assertEquals(subSubList, subSubList.clone());
}
public void testList(final ArrayDoubleList list) {
assertTrue(list.isEmpty());
list.add((double)1);
list.add((double)2);
list.add((double)3);
list.add((double)4);
list.add((double)5);
assertEquals(5, list.size());
assertEquals(1, list.get(0));
assertEquals(2, list.get(1));
assertEquals(3, list.get(2));
assertEquals(4, list.get(3));
assertEquals(5, list.get(4));
try {
list.get(5);
fail("Expected IndexOutOfBoundsException");
}
catch (final IndexOutOfBoundsException e) {
}
list.addAll(new double[] {6, 7, 8, 9, 10});
assertEquals(10, list.size());
assertEquals(6, list.get(5));
assertEquals(7, list.get(6));
assertEquals(8, list.get(7));
assertEquals(9, list.get(8));
assertEquals(10, list.get(9));
list.addAll(3, new double[] {11, 12, 13});
assertEquals(13, list.size());
assertEquals(2, list.get(1));
assertEquals(3, list.get(2));
assertEquals(11, list.get(3));
assertEquals(12, list.get(4));
assertEquals(13, list.get(5));
assertEquals(4, list.get(6));
list.set(1, (double)7);
assertEquals(13, list.size());
assertEquals(7, list.get(1));
assertEquals(1, list.indexOf((double)7));
assertEquals(9, list.lastIndexOf((double)7));
list.add(2, (double)99);
list.add(7, (double)99);
list.add(13, (double)99);
assertEquals(16, list.size());
assertArrayEquals(new double[] {1, 7, 99, 3, 11, 12, 13, 99, 4, 5, 6, 7, 8, 99, 9, 10}, list.toArray(new double[list.size()]));
Assert.assertEquals(list, list.clone());
list.removeIndex(3);
assertArrayEquals(new double[] {1, 7, 99, 11, 12, 13, 99, 4, 5, 6, 7, 8, 99, 9, 10}, list.toArray(new double[0]));
list.remove((double)99);
assertArrayEquals(new double[] {1, 7, 11, 12, 13, 99, 4, 5, 6, 7, 8, 99, 9, 10}, list.toArray(new double[list.size()]));
assertFalse(list.contains((double)0));
list.sort();
Assert.assertArrayEquals(new Double[] {(double)1, (double)4, (double)5, (double)6, (double)7, (double)7, (double)8, (double)9, (double)10, (double)11, (double)12, (double)13, (double)99, (double)99}, list.toArray(new Double[list.size()]));
assertTrue(list.removeAll(new double[] {5, 9, 12}));
assertArrayEquals(new double[] {1, 4, 6, 7, 7, 8, 10, 11, 13, 99, 99}, list.toArray(new double[list.size()]));
assertTrue(list.removeAll(Arrays.asList((double)1, (double)8, (double)13)));
assertArrayEquals(new double[] {4, 6, 7, 7, 10, 11, 99, 99}, list.toArray(new double[0]));
assertTrue(list.containsAll((double)4, (double)10, (double)99));
assertTrue(list.containsAll(Arrays.asList((double)4, (double)10, (double)99)));
assertTrue(list.containsAll(new ArrayDoubleList((double)4, (double)10, (double)99)));
}
@Test
public void testIterator() {
final double[] values = {7, 3, 5, 4, 6, 9, 1, 8, 0};
final ArrayDoubleList list = new ArrayDoubleList(values);
testIterator(values, list);
}
@Test
public void testIteratorSubList() {
final double[] values = {7, 3, 5, 4, 6, 9, 1, 8, 0};
final ArrayDoubleList list = new ArrayDoubleList((double)1, (double)2, (double)3);
list.addAll(values);
list.addAll(new double[] {4, 5, 6});
testIterator(values, list.subList(3, list.size() - 3));
}
@Test
public void testIteratorSubListSubList() {
final double[] values = {7, 3, 5, 4, 6, 9, 1, 8, 0};
final ArrayDoubleList list = new ArrayDoubleList((double)1, (double)2, (double)3, (double)4, (double)5, (double)6);
list.addAll(values);
list.addAll(new double[] {9, 10, 11, 12, 13, 14});
final ArrayDoubleList subList = list.subList(3, list.size() - 3);
testIterator(values, subList.subList(3, subList.size() - 3));
}
public void testIterator(final double[] values, final ArrayDoubleList list) {
assertEquals(values.length, list.size());
DoubleIterator iterator = list.iterator();
for (int i = 0; i < values.length; ++i)
assertEquals(values[i], iterator.next());
assertFalse(iterator.hasNext());
try {
iterator.next();
fail("Expected NoSuchElementException");
}
catch (final NoSuchElementException e) {
}
iterator = list.iterator();
assertEquals(7, iterator.next());
assertEquals(3, iterator.next());
iterator.remove();
assertEquals(5, iterator.next());
assertEquals(4, iterator.next());
iterator.remove();
assertEquals(6, iterator.next());
assertEquals(9, iterator.next());
iterator.remove();
assertEquals(1, iterator.next());
assertEquals(8, iterator.next());
iterator.remove();
assertEquals(5, list.size());
assertArrayEquals(new double[] {7, 5, 6, 1, 0}, list.toArray(new double[0]));
}
@Test
public void testListIterator() {
final double[] values = {7, 3, 5, 4, 6, 9, 1, 8, 0};
final ArrayDoubleList list = new ArrayDoubleList(values);
testListIterator(values, list);
}
@Test
public void testListIteratorSubList() {
final double[] values = {7, 3, 5, 4, 6, 9, 1, 8, 0};
final ArrayDoubleList list = new ArrayDoubleList((double)1, (double)2, (double)3);
list.addAll(values);
list.addAll(new double[] {4, 5, 6});
testListIterator(values, list.subList(3, list.size() - 3));
}
@Test
public void testListIteratorSubListSubList() {
final double[] values = {7, 3, 5, 4, 6, 9, 1, 8, 0};
final ArrayDoubleList list = new ArrayDoubleList((double)1, (double)2, (double)3, (double)4, (double)5, (double)6);
list.addAll(values);
list.addAll(new double[] {9, 10, 11, 12, 13, 14});
final ArrayDoubleList subList = list.subList(3, list.size() - 3);
testListIterator(values, subList.subList(3, subList.size() - 3));
}
public void testListIterator(final double[] values, final ArrayDoubleList list) {
DoubleListIterator iterator = list.listIterator();
for (int i = 0; i < values.length; ++i) {
assertEquals(i, iterator.nextIndex());
assertEquals(values[i], iterator.next());
}
assertFalse(iterator.hasNext());
try {
assertEquals(0, iterator.next());
fail("Expected NoSuchElementException");
}
catch (final NoSuchElementException e) {
}
iterator = list.listIterator(values.length);
for (int i = values.length - 1; i >= 0; --i) {
assertEquals(i, iterator.previousIndex());
assertEquals(values[i], iterator.previous());
}
assertFalse(iterator.hasPrevious());
iterator = list.listIterator(4);
assertEquals(6, iterator.next());
iterator.remove();
try {
iterator.remove();
fail("Expected IllegalStateException");
}
catch (final IllegalStateException e) {
}
assertEquals(4, iterator.previous());
iterator.remove();
try {
iterator.remove();
fail("Expected IllegalStateException");
}
catch (final IllegalStateException e) {
}
assertEquals(5, iterator.previous());
assertEquals(3, iterator.previous());
iterator.remove();
assertEquals(5, iterator.next());
assertEquals(9, iterator.next());
assertEquals(1, iterator.next());
assertEquals(8, iterator.next());
iterator.remove();
assertTrue(iterator.hasNext());
assertArrayEquals(new double[] {7, 5, 9, 1, 0}, list.toArray(new double[0]));
iterator.add((double)3);
assertArrayEquals(new double[] {7, 5, 9, 1, 3, 0}, list.toArray(new double[0]));
try {
iterator.remove();
fail("Expected IllegalStateException");
}
catch (final IllegalStateException e) {
}
assertEquals(0, iterator.next());
assertFalse(iterator.hasNext());
iterator.remove();
assertArrayEquals(new double[] {7, 5, 9, 1, 3}, list.toArray(new double[0]));
}
private final ArrayDoubleList list = new ArrayDoubleList();
@Test
public void shouldReportEmpty() {
assertEquals(0, list.size());
assertTrue(list.isEmpty());
}
@Test
public void shouldAdd() {
list.add((double)7);
assertEquals(1, list.size());
assertEquals(7, list.get(0));
}
@Test
public void shouldAddAtIndex() {
final int count = 20;
for (double i = 0; i < count; ++i)
list.add(i);
list.add(10, (double)111);
assertEquals(count + 1, list.size());
assertEquals(111, list.get(10));
assertEquals(count - 1, list.get(count));
}
@Test
public void shouldAddValueAtIndexWithNearlyFullCapacity() {
final int count = ArrayDoubleList.DEFAULT_INITIAL_CAPACITY - 1;
final double value = count + 1;
for (double i = 0; i < count; ++i)
list.add(i);
list.add(0, value);
assertEquals(count + 1, list.size());
assertEquals(value, list.get(0));
assertEquals(count - 1, list.get(count));
}
@Test
public void shouldSetInt() {
list.add((double)7);
list.set(0, (double)8);
assertEquals(1, list.size());
assertEquals(8, list.get(0));
}
@Test
public void shouldContainCorrectValues() {
final int count = 20;
for (double i = 0; i < count; ++i)
list.add(i);
for (double i = 0; i < count; ++i)
assertTrue(list.contains(i));
assertFalse(list.contains((double)-1));
assertFalse(list.contains((double)20));
}
@Test
public void shouldRemoveAtIndexForListLengthOne() {
list.add((double)1);
assertEquals(1, list.removeIndex(0));
assertTrue(list.isEmpty());
}
@Test
public void shouldRemoveAtIndex() {
final int count = 20;
for (int i = 0; i < count; ++i)
list.add((double)i);
assertEquals(10, list.removeIndex(10));
assertEquals(count - 1, list.size());
assertEquals(11, list.get(10));
}
@Test
public void shouldRemoveByValue() {
final int count = 20;
for (double i = 0; i < count; ++i)
list.add((double)(i * 10));
assertTrue(list.remove((double)10));
assertEquals(count - 1, list.size());
assertEquals(20, list.get(1));
}
// @Test
// public void shouldForEachOrderedInt() {
// final List expected = new ArrayList<>();
// for (int i = 0; i < 20; ++i)
// expected.add((double)i);
//
// list.addAll(expected);
//
// final List actual = new ArrayList<>();
// list.stream().forEach(actual::add);
//
// Assert.assertEquals(expected, actual);
// }
//
// @Test
// public void shouldCreateObjectRefArray() {
// final int count = 20;
// final List expected = new ArrayList<>();
// for (int i = 0; i < count; ++i)
// expected.add((double)i);
//
// list.addAll(expected);
//
// Assert.assertArrayEquals(expected.toArray(), list.toArray(new Double[count]));
// Assert.assertArrayEquals(expected.toArray(), list.toArray(new Double[0]));
// assertArrayEquals(expected.stream().mapToDouble(i -> i).toArray(), list.toArray());
// }
@Test
public void shouldCreateIntArray() {
final int count = 20;
final double[] expected = new double[count];
for (int i = 0; i < count; ++i) {
list.add((double)i);
expected[i] = (double)i;
}
assertArrayEquals(expected, list.toArray());
final double[] copy = new double[count];
final double[] result = list.toArray(copy);
assertSame(copy, result);
assertArrayEquals(expected, result);
}
@Test
public void shouldCreateDoubleArray() {
final int count = 20;
final Double[] expected = new Double[count];
for (int i = 0; i < count; ++i) {
list.add((double)i);
expected[i] = (double)i;
}
final Double[] integers = list.toArray(new Double[0]);
Assert.assertEquals(expected.getClass(), integers.getClass());
Assert.assertArrayEquals(expected, integers);
}
@Test
public void shouldPushAndThenPopInOrder() {
final int count = 7;
for (double i = 0; i < count; ++i)
list.push(i);
for (int i = count - 1; i >= 0; --i)
assertEquals(i, list.pop());
}
@Test(expected = IndexOutOfBoundsException.class)
public void shouldThrowExceptionWhenPoppingEmptyList() {
list.pop();
}
@Test
public void shouldGenerateStringRepresentation() {
final double[] testEntries = new double[] {(double)65, (double)68, (double)83, (double)104, (double)111, (double)75, (double)83, (double)97};
list.addAll(testEntries);
final ArrayList expected = new ArrayList<>(testEntries.length);
for (final double testEntry : testEntries)
expected.add(testEntry);
Assert.assertEquals(expected.toString(), list.toString());
}
}