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/* |
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* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. |
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* Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved. |
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* 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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* @summary Unit test for Collections.emptyNavigableSet |
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* @run testng EmptyNavigableSet |
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*/ |
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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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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.NoSuchElementException; |
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import java.util.NavigableSet; |
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import java.util.NoSuchElementException; |
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import java.util.SortedSet; |
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import java.util.TreeSet; |
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import org.testng.annotations.Test; |
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import org.testng.annotations.DataProvider; |
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import static org.testng.Assert.fail; |
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import static org.testng.Assert.assertEquals; |
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import static org.testng.Assert.assertTrue; |
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import static org.testng.Assert.assertFalse; |
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import static org.testng.Assert.assertSame; |
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import static org.testng.Assert.assertTrue; |
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public class EmptyNavigableSet { |
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public static <T> void assertInstance(T actual, Class<? extends T> expected) { |
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assertInstance(expected.isInstance(actual), null); |
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assertInstance(actual, expected, null); |
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} |
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public static <T> void assertInstance(T actual, Class<? extends T> expected, String message) { |
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((null != message) ? message : "") + " Not empty. "); |
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} |
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public interface Thrower<T extends Throwable> { |
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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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public void run() throws T; |
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private void assertThrowsCCE(ThrowingRunnable r, String s) { |
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assertThrows(ClassCastException.class, r, s); |
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} |
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public static <T extends Throwable> void assertThrows(Thrower<T> thrower, Class<T> throwable) { |
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assertThrows(thrower, throwable, null); |
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private void assertThrowsNPE(ThrowingRunnable r, String s) { |
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assertThrows(NullPointerException.class, r, s); |
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} |
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public static <T extends Throwable> void assertThrows(Thrower<T> thrower, Class<T> throwable, String message) { |
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Throwable result; |
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try { |
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thrower.run(); |
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fail(((null != message) ? message : "") + "Failed to throw " + throwable.getCanonicalName() + ". "); |
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return; |
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} catch (Throwable caught) { |
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result = caught; |
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} |
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private void assertThrowsIAE(ThrowingRunnable r, String s) { |
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assertThrows(IllegalArgumentException.class, r, s); |
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} |
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assertInstance(result, throwable, ((null != message) ? message : "") + "Failed to throw " + throwable.getCanonicalName() + ". "); |
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private void assertThrowsNSEE(ThrowingRunnable r, String s) { |
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assertThrows(NoSuchElementException.class, r, s); |
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} |
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public static final boolean isDescending(SortedSet<?> set) { |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testContainsRequiresComparable(String description, NavigableSet<?> navigableSet) { |
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assertThrows(() -> { |
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navigableSet.contains(new Object()); |
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}, |
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ClassCastException.class, |
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description + ": Compareable should be required"); |
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assertThrowsCCE( |
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() -> navigableSet.contains(new Object()), |
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description + ": Comparable should be required"); |
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} |
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/** |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testEmptyIterator(String description, NavigableSet<?> navigableSet) { |
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Iterator emptyIterator = navigableSet.iterator(); |
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assertFalse((emptyIterator != null) && (emptyIterator.hasNext()), |
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"The iterator is not empty."); |
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assertFalse(navigableSet.iterator().hasNext(), "The iterator is not empty."); |
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} |
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/** |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testFirst(String description, NavigableSet<?> navigableSet) { |
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assertThrows(() -> { |
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navigableSet.first(); |
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}, NoSuchElementException.class, description); |
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assertThrowsNSEE(navigableSet::first, description); |
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} |
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/** |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testHeadSet(String description, NavigableSet navigableSet) { |
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assertThrows( |
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assertThrowsNPE( |
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() -> { NavigableSet ns = navigableSet.headSet(null, false); }, |
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NullPointerException.class, |
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description + ": Must throw NullPointerException for null element"); |
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assertThrows( |
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assertThrowsCCE( |
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() -> { NavigableSet ns = navigableSet.headSet(new Object(), true); }, |
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ClassCastException.class, |
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description + ": Must throw ClassCastException for non-Comparable element"); |
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NavigableSet ns = navigableSet.headSet("1", false); |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testLast(String description, NavigableSet<?> navigableSet) { |
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assertThrows(() -> { |
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navigableSet.last(); |
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}, NoSuchElementException.class, description); |
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assertThrowsNSEE(navigableSet::last, description); |
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} |
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/** |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testSubSet(String description, NavigableSet navigableSet) { |
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assertThrows( |
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assertThrowsNPE( |
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() -> { |
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SortedSet ss = navigableSet.subSet(null, BigInteger.TEN); |
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}, |
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NullPointerException.class, |
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description + ": Must throw NullPointerException for null element"); |
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assertThrows( |
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assertThrowsNPE( |
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() -> { |
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SortedSet ss = navigableSet.subSet(BigInteger.ZERO, null); |
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}, |
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NullPointerException.class, |
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description + ": Must throw NullPointerException for null element"); |
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assertThrows( |
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assertThrowsNPE( |
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() -> { |
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SortedSet ss = navigableSet.subSet(null, null); |
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}, |
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NullPointerException.class, |
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description + ": Must throw NullPointerException for null element"); |
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Object obj1 = new Object(); |
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Object obj2 = new Object(); |
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assertThrows( |
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assertThrowsCCE( |
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() -> { |
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SortedSet ss = navigableSet.subSet(obj1, BigInteger.TEN); |
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}, |
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ClassCastException.class, description |
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+ ": Must throw ClassCastException for parameter which is not Comparable."); |
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description + ": Must throw ClassCastException for parameter which is not Comparable."); |
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assertThrows( |
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assertThrowsCCE( |
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() -> { |
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SortedSet ss = navigableSet.subSet(BigInteger.ZERO, obj2); |
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}, |
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ClassCastException.class, description |
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+ ": Must throw ClassCastException for parameter which is not Comparable."); |
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description + ": Must throw ClassCastException for parameter which is not Comparable."); |
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assertThrows( |
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assertThrowsCCE( |
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() -> { |
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SortedSet ss = navigableSet.subSet(obj1, obj2); |
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}, |
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ClassCastException.class, description |
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+ ": Must throw ClassCastException for parameter which is not Comparable."); |
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description + ": Must throw ClassCastException for parameter which is not Comparable."); |
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// minimal range |
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navigableSet.subSet(BigInteger.ZERO, false, BigInteger.ZERO, false); |
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Object first = isDescending(navigableSet) ? BigInteger.TEN : BigInteger.ZERO; |
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Object last = (BigInteger.ZERO == first) ? BigInteger.TEN : BigInteger.ZERO; |
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assertThrows( |
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() -> { |
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navigableSet.subSet(last, true, first, false); |
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}, |
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IllegalArgumentException.class, description |
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+ ": Must throw IllegalArgumentException when fromElement is not less then then toElement."); |
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assertThrowsIAE( |
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() -> navigableSet.subSet(last, true, first, false), |
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description |
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+ ": Must throw IllegalArgumentException when fromElement is not less than toElement."); |
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navigableSet.subSet(first, true, last, false); |
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} |
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// slightly smaller |
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NavigableSet ns = subSet.subSet(first, false, last, false); |
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// slight expansion |
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assertThrows(() -> { |
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ns.subSet(first, true, last, true); |
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}, |
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IllegalArgumentException.class, |
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assertThrowsIAE( |
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() -> ns.subSet(first, true, last, true), |
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description + ": Expansion should not be allowed"); |
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// much smaller |
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NavigableSet ns = subSet.headSet(BigInteger.ONE, false); |
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// slight expansion |
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assertThrows(() -> { |
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ns.headSet(BigInteger.ONE, true); |
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}, |
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IllegalArgumentException.class, |
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assertThrowsIAE( |
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() -> ns.headSet(BigInteger.ONE, true), |
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description + ": Expansion should not be allowed"); |
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// much smaller |
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NavigableSet ns = subSet.tailSet(BigInteger.ONE, false); |
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// slight expansion |
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assertThrows(() -> { |
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ns.tailSet(BigInteger.ONE, true); |
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}, |
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IllegalArgumentException.class, |
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assertThrowsIAE( |
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() -> ns.tailSet(BigInteger.ONE, true), |
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description + ": Expansion should not be allowed"); |
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// much smaller |
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*/ |
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@Test(dataProvider = "NavigableSet<?>", dataProviderClass = EmptyNavigableSet.class) |
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public void testTailSet(String description, NavigableSet navigableSet) { |
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assertThrows(() -> { |
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navigableSet.tailSet(null); |
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}, |
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NullPointerException.class, |
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assertThrowsNPE( |
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() -> navigableSet.tailSet(null), |
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description + ": Must throw NullPointerException for null element"); |
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assertThrows(() -> { |
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navigableSet.tailSet(new Object()); |
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}, ClassCastException.class); |
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assertThrowsCCE( |
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() -> navigableSet.tailSet(new Object()), |
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description); |
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NavigableSet ss = navigableSet.tailSet("1", true); |
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