Example usage for java.util NavigableSet headSet

Introduction

In this page you can find the example usage for java.util NavigableSet headSet.

Prototype

SortedSet<E> headSet(E toElement);

Source Link

Document

Equivalent to headSet(toElement, false) .

Usage

From source file:com.google.gwt.emultest.java.util.TreeSetTest.java

/**
 * Test method for 'java.util.SortedSet.headSet(Object)' and
 * 'java.util.NavigableSet.headSet(Object, boolean)'.
 *
 * @see java.util.SortedSet#headSet(Object)
 * @see java.util.NavigableSet#headSet(Object, boolean)
 *//*  ww w  .  java  2  s  .  c  om*/
public void testHeadSet() {
    // test with no entries
    NavigableSet<E> set = createNavigableSet();
    assertNotNull(set.headSet(getKeys()[0]));
    assertNotNull(set.headSet(getKeys()[0], false));
    assertNotNull(set.headSet(getKeys()[0], true));
}

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From source file:com.google.gwt.emultest.java.util.TreeSetTest.java

/**
 * Test method for 'java.util.SortedSet.headSet(Object)' and
 * 'java.util.NavigableSet.headSet(Object, boolean)'.
 *
 * @see java.util.SortedSet#headSet(Object)
 * @see java.util.NavigableSet#headSet(Object, boolean)
 *///from  ww  w . ja va  2s . c o  m
public void testHeadSet_entries0_size() {
    // test with no entries
    NavigableSet<E> set = createNavigableSet();
    assertEquals(0, set.headSet(getKeys()[0]).size());
    assertEquals(0, set.headSet(getKeys()[0], false).size());
    assertEquals(0, set.headSet(getKeys()[0], true).size());
}

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From source file:com.google.gwt.emultest.java.util.TreeSetTest.java

/**
 * Test method for 'java.util.SortedSet.headSet(Object)' and
 * 'java.util.NavigableSet.headSet(Object, boolean)'.
 *
 * @see java.util.SortedSet#headSet(Object)
 * @see java.util.NavigableSet#headSet(Object, boolean)
 *//*ww  w .  j av  a 2 s.  co m*/
public void testHeadSet_entries1() {
    NavigableSet<E> set = createNavigableSet();
    // test with a single entry set
    set.add(getKeys()[0]);

    assertEquals(0, set.headSet(getKeys()[0]).size());
    assertEquals(0, set.headSet(getKeys()[0], false).size());
    assertEquals(1, set.headSet(getKeys()[0], true).size());
}

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From source file:com.google.gwt.emultest.java.util.TreeSetTest.java

/**
 * Test method for 'java.util.SortedSet.headSet(Object)' and
 * 'java.util.NavigableSet.headSet(Object, boolean)'.
 *
 * @see java.util.SortedSet#headSet(Object)
 * @see java.util.NavigableSet#headSet(Object, boolean)
 *///from w  ww.j a v a2 s .c o m
public void testHeadSet_entries2() {
    NavigableSet<E> set = createNavigableSet();
    // test with two entry set
    set.add(getKeys()[0]);
    set.add(getKeys()[1]);

    assertEquals(0, set.headSet(getKeys()[0]).size());
    assertEquals(1, set.headSet(getKeys()[1]).size());
    assertEquals(getKeys()[0], set.tailSet(getKeys()[0]).toArray()[0]);

    assertEquals(0, set.headSet(getKeys()[0], false).size());
    assertEquals(1, set.headSet(getKeys()[1], false).size());
    assertEquals(getKeys()[0], set.headSet(getKeys()[0], true).toArray()[0]);

    assertEquals(1, set.headSet(getKeys()[0], true).size());
    assertEquals(2, set.headSet(getKeys()[1], true).size());
    assertEquals(getKeys()[0], set.headSet(getKeys()[1], false).toArray()[0]);
    assertEquals(getKeys()[1], set.headSet(getKeys()[1], true).toArray()[1]);
    assertEquals(0, set.headSet(getKeys()[0], false).size());
    assertEquals(getKeys()[1], set.headSet(getKeys()[1], true).toArray()[1]);
}

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