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jsr166 |
1.1 |
/* |
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jsr166 |
1.6 |
* Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved. |
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jsr166 |
1.1 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* @test |
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* @bug 4533691 7129185 |
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* @summary Unit test for Collections.emptyNavigableMap |
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* @run testng EmptyNavigableMap |
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*/ |
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jsr166 |
1.10 |
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import org.testng.Assert; |
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import org.testng.Assert.ThrowingRunnable; |
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import org.testng.annotations.DataProvider; |
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import org.testng.annotations.Test; |
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jsr166 |
1.1 |
import java.math.BigInteger; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Comparator; |
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import java.util.Iterator; |
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import java.util.NavigableMap; |
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import java.util.SortedMap; |
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import java.util.TreeMap; |
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jsr166 |
1.6 |
|
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jsr166 |
1.10 |
import static org.testng.Assert.assertFalse; |
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jsr166 |
1.1 |
import static org.testng.Assert.assertTrue; |
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public class EmptyNavigableMap { |
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public static <T> void assertInstance(T actual, Class<? extends T> expected) { |
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jsr166 |
1.7 |
assertInstance(actual, expected, null); |
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jsr166 |
1.1 |
} |
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public static <T> void assertInstance(T actual, Class<? extends T> expected, String message) { |
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assertTrue(expected.isInstance(actual), ((null != message) ? message : "") |
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+ " " + (actual == null ? "<null>" : actual.getClass().getSimpleName()) + " != " + expected.getSimpleName() + ". "); |
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} |
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public static <T extends Throwable> void assertEmptyNavigableMap(Object obj) { |
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assertInstance(obj, NavigableMap.class); |
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assertTrue(((NavigableMap)obj).isEmpty() && (((NavigableMap)obj).size() == 0)); |
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} |
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public static <T extends Throwable> void assertEmptyNavigableMap(Object obj, String message) { |
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assertInstance(obj, NavigableMap.class, message); |
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assertTrue(((NavigableMap)obj).isEmpty() && (((NavigableMap)obj).size() == 0), |
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((null != message) ? message : "") + " Not empty. "); |
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} |
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jsr166 |
1.6 |
private <T extends Throwable> void assertThrows(Class<T> throwableClass, |
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ThrowingRunnable runnable, |
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String message) { |
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try { |
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Assert.assertThrows(throwableClass, runnable); |
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} catch (AssertionError e) { |
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throw new AssertionError(String.format("%s%n%s", |
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((null != message) ? message : ""), e.getMessage()), e); |
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} |
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} |
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jsr166 |
1.1 |
|
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jsr166 |
1.6 |
private void assertThrowsCCE(ThrowingRunnable r, String s) { |
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assertThrows(ClassCastException.class, r, s); |
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jsr166 |
1.1 |
} |
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jsr166 |
1.6 |
private void assertThrowsNPE(ThrowingRunnable r, String s) { |
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assertThrows(NullPointerException.class, r, s); |
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jsr166 |
1.1 |
} |
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jsr166 |
1.6 |
private void assertThrowsIAE(ThrowingRunnable r, String s) { |
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assertThrows(IllegalArgumentException.class, r, s); |
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jsr166 |
1.1 |
} |
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public static final boolean isDescending(SortedMap<?,?> set) { |
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if (null == set.comparator()) { |
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// natural order |
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return false; |
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} |
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if (Collections.reverseOrder() == set.comparator()) { |
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// reverse natural order. |
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return true; |
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} |
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if (set.comparator().equals(Collections.reverseOrder(Collections.reverseOrder(set.comparator())))) { |
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// it's a Collections.reverseOrder(Comparator). |
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return true; |
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} |
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throw new IllegalStateException("can't determine ordering for " + set); |
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} |
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/** |
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* Tests that the comparator is {@code null}. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) { |
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Comparator comparator = navigableMap.comparator(); |
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assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null."); |
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} |
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/** |
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* Tests that contains requires Comparable |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testContainsRequiresComparable(String description, NavigableMap<?,?> navigableMap) { |
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jsr166 |
1.8 |
assertThrowsCCE( |
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() -> navigableMap.containsKey(new Object()), |
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jsr166 |
1.9 |
description + ": Comparable should be required"); |
131 |
jsr166 |
1.1 |
} |
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/** |
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* Tests that the contains method returns {@code false}. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testContains(String description, NavigableMap<?,?> navigableMap) { |
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assertFalse(navigableMap.containsKey(new Integer(1)), |
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description + ": Should not contain any elements."); |
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assertFalse(navigableMap.containsValue(new Integer(1)), |
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description + ": Should not contain any elements."); |
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} |
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/** |
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* Tests that the containsAll method returns {@code false}. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testContainsAll(String description, NavigableMap<?,?> navigableMap) { |
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TreeMap treeMap = new TreeMap(); |
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treeMap.put("1", 1); |
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treeMap.put("2", 2); |
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treeMap.put("3", 3); |
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assertFalse(navigableMap.equals(treeMap), "Should not contain any elements."); |
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} |
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/** |
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* Tests that the iterator is empty. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testEmptyIterator(String description, NavigableMap<?,?> navigableMap) { |
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assertFalse(navigableMap.keySet().iterator().hasNext(), "The iterator is not empty."); |
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assertFalse(navigableMap.values().iterator().hasNext(), "The iterator is not empty."); |
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assertFalse(navigableMap.entrySet().iterator().hasNext(), "The iterator is not empty."); |
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} |
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/** |
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* Tests that the set is empty. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testIsEmpty(String description, NavigableMap<?,?> navigableMap) { |
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assertTrue(navigableMap.isEmpty(), "The set is not empty."); |
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} |
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/** |
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* Tests the headMap() method. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testHeadMap(String description, NavigableMap navigableMap) { |
180 |
jsr166 |
1.6 |
assertThrowsNPE( |
181 |
jsr166 |
1.1 |
() -> { NavigableMap ss = navigableMap.headMap(null, false); }, |
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description + ": Must throw NullPointerException for null element"); |
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184 |
jsr166 |
1.6 |
assertThrowsCCE( |
185 |
jsr166 |
1.1 |
() -> { NavigableMap ss = navigableMap.headMap(new Object(), true); }, |
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description + ": Must throw ClassCastException for non-Comparable element"); |
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NavigableMap ss = navigableMap.headMap("1", false); |
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assertEmptyNavigableMap(ss, description + ": Returned value is not empty navigable set."); |
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} |
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/** |
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* Tests that the size is 0. |
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*/ |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testSizeIsZero(String description, NavigableMap<?,?> navigableMap) { |
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assertTrue(0 == navigableMap.size(), "The size of the set is not 0."); |
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} |
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/** |
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* Tests the subMap() method. |
203 |
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*/ |
204 |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
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public void testSubMap(String description, NavigableMap navigableMap) { |
206 |
jsr166 |
1.6 |
assertThrowsNPE( |
207 |
jsr166 |
1.1 |
() -> { |
208 |
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SortedMap ss = navigableMap.subMap(null, BigInteger.TEN); |
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}, |
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description + ": Must throw NullPointerException for null element"); |
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212 |
jsr166 |
1.6 |
assertThrowsNPE( |
213 |
jsr166 |
1.1 |
() -> { |
214 |
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SortedMap ss = navigableMap.subMap(BigInteger.ZERO, null); |
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}, |
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description + ": Must throw NullPointerException for null element"); |
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218 |
jsr166 |
1.6 |
assertThrowsNPE( |
219 |
jsr166 |
1.1 |
() -> { |
220 |
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SortedMap ss = navigableMap.subMap(null, null); |
221 |
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}, |
222 |
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description + ": Must throw NullPointerException for null element"); |
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224 |
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Object obj1 = new Object(); |
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Object obj2 = new Object(); |
226 |
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227 |
jsr166 |
1.6 |
assertThrowsCCE( |
228 |
jsr166 |
1.1 |
() -> { |
229 |
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SortedMap ss = navigableMap.subMap(obj1, BigInteger.TEN); |
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}, |
231 |
jsr166 |
1.6 |
description + ": Must throw ClassCastException for parameter which is not Comparable."); |
232 |
jsr166 |
1.1 |
|
233 |
jsr166 |
1.6 |
assertThrowsCCE( |
234 |
jsr166 |
1.1 |
() -> { |
235 |
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SortedMap ss = navigableMap.subMap(BigInteger.ZERO, obj2); |
236 |
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}, |
237 |
jsr166 |
1.6 |
description + ": Must throw ClassCastException for parameter which is not Comparable."); |
238 |
jsr166 |
1.1 |
|
239 |
jsr166 |
1.6 |
assertThrowsCCE( |
240 |
jsr166 |
1.1 |
() -> { |
241 |
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SortedMap ss = navigableMap.subMap(obj1, obj2); |
242 |
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}, |
243 |
jsr166 |
1.6 |
description + ": Must throw ClassCastException for parameter which is not Comparable."); |
244 |
jsr166 |
1.1 |
|
245 |
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// minimal range |
246 |
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navigableMap.subMap(BigInteger.ZERO, false, BigInteger.ZERO, false); |
247 |
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navigableMap.subMap(BigInteger.ZERO, false, BigInteger.ZERO, true); |
248 |
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navigableMap.subMap(BigInteger.ZERO, true, BigInteger.ZERO, false); |
249 |
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navigableMap.subMap(BigInteger.ZERO, true, BigInteger.ZERO, true); |
250 |
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Object first = isDescending(navigableMap) ? BigInteger.TEN : BigInteger.ZERO; |
252 |
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Object last = (BigInteger.ZERO == first) ? BigInteger.TEN : BigInteger.ZERO; |
253 |
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|
254 |
jsr166 |
1.6 |
assertThrowsIAE( |
255 |
jsr166 |
1.8 |
() -> navigableMap.subMap(last, true, first, false), |
256 |
jsr166 |
1.6 |
description + ": Must throw IllegalArgumentException when fromElement is not less than toElement."); |
257 |
jsr166 |
1.1 |
|
258 |
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navigableMap.subMap(first, true, last, false); |
259 |
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} |
260 |
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261 |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
262 |
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public void testSubMapRanges(String description, NavigableMap navigableMap) { |
263 |
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Object first = isDescending(navigableMap) ? BigInteger.TEN : BigInteger.ZERO; |
264 |
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Object last = (BigInteger.ZERO == first) ? BigInteger.TEN : BigInteger.ZERO; |
265 |
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266 |
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NavigableMap subMap = navigableMap.subMap(first, true, last, true); |
267 |
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268 |
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// same subset |
269 |
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subMap.subMap(first, true, last, true); |
270 |
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271 |
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// slightly smaller |
272 |
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NavigableMap ns = subMap.subMap(first, false, last, false); |
273 |
jsr166 |
1.2 |
// slight expansion |
274 |
jsr166 |
1.8 |
assertThrowsIAE( |
275 |
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() -> ns.subMap(first, true, last, true), |
276 |
jsr166 |
1.1 |
description + ": Expansion should not be allowed"); |
277 |
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278 |
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// much smaller |
279 |
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subMap.subMap(first, false, BigInteger.ONE, false); |
280 |
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} |
281 |
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282 |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
283 |
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public void testheadMapRanges(String description, NavigableMap navigableMap) { |
284 |
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NavigableMap subMap = navigableMap.headMap(BigInteger.ONE, true); |
285 |
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286 |
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// same subset |
287 |
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subMap.headMap(BigInteger.ONE, true); |
288 |
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289 |
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// slightly smaller |
290 |
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NavigableMap ns = subMap.headMap(BigInteger.ONE, false); |
291 |
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|
292 |
jsr166 |
1.2 |
// slight expansion |
293 |
jsr166 |
1.8 |
assertThrowsIAE( |
294 |
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() -> ns.headMap(BigInteger.ONE, true), |
295 |
jsr166 |
1.1 |
description + ": Expansion should not be allowed"); |
296 |
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297 |
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// much smaller |
298 |
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subMap.headMap(isDescending(subMap) ? BigInteger.TEN : BigInteger.ZERO, true); |
299 |
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} |
300 |
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301 |
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
302 |
|
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public void testTailMapRanges(String description, NavigableMap navigableMap) { |
303 |
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NavigableMap subMap = navigableMap.tailMap(BigInteger.ONE, true); |
304 |
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305 |
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// same subset |
306 |
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subMap.tailMap(BigInteger.ONE, true); |
307 |
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|
308 |
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// slightly smaller |
309 |
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NavigableMap ns = subMap.tailMap(BigInteger.ONE, false); |
310 |
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|
311 |
jsr166 |
1.2 |
// slight expansion |
312 |
jsr166 |
1.8 |
assertThrowsIAE( |
313 |
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() -> ns.tailMap(BigInteger.ONE, true), |
314 |
jsr166 |
1.1 |
description + ": Expansion should not be allowed"); |
315 |
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316 |
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// much smaller |
317 |
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subMap.tailMap(isDescending(subMap) ? BigInteger.ZERO : BigInteger.TEN, false); |
318 |
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} |
319 |
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|
320 |
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/** |
321 |
|
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* Tests the tailMap() method. |
322 |
|
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*/ |
323 |
|
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@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class) |
324 |
|
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public void testTailMap(String description, NavigableMap navigableMap) { |
325 |
jsr166 |
1.8 |
assertThrowsNPE( |
326 |
|
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() -> navigableMap.tailMap(null), |
327 |
jsr166 |
1.1 |
description + ": Must throw NullPointerException for null element"); |
328 |
|
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|
329 |
jsr166 |
1.8 |
assertThrowsCCE( |
330 |
|
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() -> navigableMap.tailMap(new Object()), |
331 |
jsr166 |
1.6 |
description); |
332 |
jsr166 |
1.1 |
|
333 |
|
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NavigableMap ss = navigableMap.tailMap("1", true); |
334 |
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|
335 |
|
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assertEmptyNavigableMap(ss, description + ": Returned value is not empty navigable set."); |
336 |
|
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} |
337 |
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|
338 |
|
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@DataProvider(name = "NavigableMap<?,?>", parallel = true) |
339 |
|
|
public static Iterator<Object[]> navigableMapsProvider() { |
340 |
|
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return makeNavigableMaps().iterator(); |
341 |
|
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} |
342 |
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|
343 |
|
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public static Collection<Object[]> makeNavigableMaps() { |
344 |
|
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return Arrays.asList( |
345 |
|
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new Object[]{"UnmodifiableNavigableMap(TreeMap)", Collections.unmodifiableNavigableMap(new TreeMap())}, |
346 |
|
|
new Object[]{"UnmodifiableNavigableMap(TreeMap.descendingMap()", Collections.unmodifiableNavigableMap(new TreeMap().descendingMap())}, |
347 |
|
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new Object[]{"UnmodifiableNavigableMap(TreeMap.descendingMap().descendingMap()", Collections.unmodifiableNavigableMap(new TreeMap().descendingMap().descendingMap())}, |
348 |
|
|
new Object[]{"emptyNavigableMap()", Collections.emptyNavigableMap()}, |
349 |
|
|
new Object[]{"emptyNavigableMap().descendingMap()", Collections.emptyNavigableMap().descendingMap()}, |
350 |
|
|
new Object[]{"emptyNavigableMap().descendingMap().descendingMap()", Collections.emptyNavigableMap().descendingMap().descendingMap()} |
351 |
|
|
); |
352 |
|
|
} |
353 |
|
|
} |