alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (GeneralRangeTest.java)

This example Java source code file (GeneralRangeTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

boundtype, closed, expected, generalrange, generalrangetest, gwtincompatible, iae, illegalargumentexception, in_order_values, integer, list, open, ordering, testcase, util

The GeneralRangeTest.java Java example source code

/*
 * Copyright (C) 2011 The Guava Authors
 *
 * 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.google.common.collect;

import static com.google.common.collect.BoundType.CLOSED;
import static com.google.common.collect.BoundType.OPEN;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Objects;
import com.google.common.testing.NullPointerTester;

import junit.framework.TestCase;

import java.util.Arrays;
import java.util.List;

/**
 * Tests for {@code GeneralRange}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible(emulated = true)
public class GeneralRangeTest extends TestCase {
  private static final Ordering<Integer> ORDERING = Ordering.natural().nullsFirst();

  private static final List<Integer> IN_ORDER_VALUES = Arrays.asList(null, 1, 2, 3, 4, 5);

  public void testCreateEmptyRangeFails() {
    for (BoundType lboundType : BoundType.values()) {
      for (BoundType uboundType : BoundType.values()) {
        try {
          GeneralRange.range(ORDERING, 4, lboundType, 2, uboundType);
          fail("Expected IAE");
        } catch (IllegalArgumentException expected) {}
      }
    }
  }

  public void testCreateEmptyRangeOpenOpenFails() {
    for (Integer i : IN_ORDER_VALUES) {
      try {
        GeneralRange.range(ORDERING, i, OPEN, i, OPEN);
        fail("Expected IAE");
      } catch (IllegalArgumentException expected) {}
    }
  }

  public void testCreateEmptyRangeClosedOpenSucceeds() {
    for (Integer i : IN_ORDER_VALUES) {
      GeneralRange<Integer> range = GeneralRange.range(ORDERING, i, CLOSED, i, OPEN);
      for (Integer j : IN_ORDER_VALUES) {
        assertFalse(range.contains(j));
      }
    }
  }

  public void testCreateEmptyRangeOpenClosedSucceeds() {
    for (Integer i : IN_ORDER_VALUES) {
      GeneralRange<Integer> range = GeneralRange.range(ORDERING, i, OPEN, i, CLOSED);
      for (Integer j : IN_ORDER_VALUES) {
        assertFalse(range.contains(j));
      }
    }
  }

  public void testCreateSingletonRangeSucceeds() {
    for (Integer i : IN_ORDER_VALUES) {
      GeneralRange<Integer> range = GeneralRange.range(ORDERING, i, CLOSED, i, CLOSED);
      for (Integer j : IN_ORDER_VALUES) {
        assertEquals(Objects.equal(i, j), range.contains(j));
      }
    }
  }

  public void testSingletonRange() {
    GeneralRange<Integer> range = GeneralRange.range(ORDERING, 3, CLOSED, 3, CLOSED);
    for (Integer i : IN_ORDER_VALUES) {
      assertEquals(ORDERING.compare(i, 3) == 0, range.contains(i));
    }
  }

  public void testLowerRange() {
    for (BoundType lBoundType : BoundType.values()) {
      GeneralRange<Integer> range = GeneralRange.downTo(ORDERING, 3, lBoundType);
      for (Integer i : IN_ORDER_VALUES) {
        assertEquals(ORDERING.compare(i, 3) > 0
            || (ORDERING.compare(i, 3) == 0 && lBoundType == CLOSED), range.contains(i));
        assertEquals(ORDERING.compare(i, 3) < 0
            || (ORDERING.compare(i, 3) == 0 && lBoundType == OPEN), range.tooLow(i));
        assertFalse(range.tooHigh(i));
      }
    }
  }

  public void testUpperRange() {
    for (BoundType lBoundType : BoundType.values()) {
      GeneralRange<Integer> range = GeneralRange.upTo(ORDERING, 3, lBoundType);
      for (Integer i : IN_ORDER_VALUES) {
        assertEquals(ORDERING.compare(i, 3) < 0
            || (ORDERING.compare(i, 3) == 0 && lBoundType == CLOSED), range.contains(i));
        assertEquals(ORDERING.compare(i, 3) > 0
            || (ORDERING.compare(i, 3) == 0 && lBoundType == OPEN), range.tooHigh(i));
        assertFalse(range.tooLow(i));
      }
    }
  }

  public void testDoublyBoundedAgainstRange() {
    for (BoundType lboundType : BoundType.values()) {
      for (BoundType uboundType : BoundType.values()) {
        Range<Integer> range = Range.range(2, lboundType, 4, uboundType);
        GeneralRange<Integer> gRange = GeneralRange.range(ORDERING, 2, lboundType, 4, uboundType);
        for (Integer i : IN_ORDER_VALUES) {
          assertEquals(i != null && range.contains(i), gRange.contains(i));
        }
      }
    }
  }

  public void testIntersectAgainstMatchingEndpointsRange() {
    GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN);
    assertEquals(GeneralRange.range(ORDERING, 2, OPEN, 4, OPEN),
        range.intersect(GeneralRange.range(ORDERING, 2, OPEN, 4, CLOSED)));
  }

  public void testIntersectAgainstBiggerRange() {
    GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN);

    assertEquals(GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN),
        range.intersect(GeneralRange.range(ORDERING, null, OPEN, 5, CLOSED)));

    assertEquals(GeneralRange.range(ORDERING, 2, OPEN, 4, OPEN),
        range.intersect(GeneralRange.range(ORDERING, 2, OPEN, 5, CLOSED)));

    assertEquals(GeneralRange.range(ORDERING, 2, CLOSED, 4, OPEN),
        range.intersect(GeneralRange.range(ORDERING, 1, OPEN, 4, OPEN)));
  }

  public void testIntersectAgainstSmallerRange() {
    GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, OPEN, 4, OPEN);
    assertEquals(GeneralRange.range(ORDERING, 3, CLOSED, 4, OPEN),
        range.intersect(GeneralRange.range(ORDERING, 3, CLOSED, 4, CLOSED)));
  }

  public void testIntersectOverlappingRange() {
    GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, OPEN, 4, CLOSED);
    assertEquals(GeneralRange.range(ORDERING, 3, CLOSED, 4, CLOSED),
        range.intersect(GeneralRange.range(ORDERING, 3, CLOSED, 5, CLOSED)));
    assertEquals(GeneralRange.range(ORDERING, 2, OPEN, 3, OPEN),
        range.intersect(GeneralRange.range(ORDERING, 1, OPEN, 3, OPEN)));
  }

  public void testIntersectNonOverlappingRange() {
    GeneralRange<Integer> range = GeneralRange.range(ORDERING, 2, OPEN, 4, CLOSED);
    assertTrue(range.intersect(GeneralRange.range(ORDERING, 5, CLOSED, 6, CLOSED)).isEmpty());
    assertTrue(range.intersect(GeneralRange.range(ORDERING, 1, OPEN, 2, OPEN)).isEmpty());
  }

  public void testFromRangeAll() {
    assertEquals(GeneralRange.all(Ordering.natural()), GeneralRange.from(Range.all()));
  }

  public void testFromRangeOneEnd() {
    for (BoundType endpointType : BoundType.values()) {
      assertEquals(GeneralRange.upTo(Ordering.natural(), 3, endpointType),
          GeneralRange.from(Range.upTo(3, endpointType)));

      assertEquals(GeneralRange.downTo(Ordering.natural(), 3, endpointType),
          GeneralRange.from(Range.downTo(3, endpointType)));
    }
  }

  public void testFromRangeTwoEnds() {
    for (BoundType lowerType : BoundType.values()) {
      for (BoundType upperType : BoundType.values()) {
        assertEquals(GeneralRange.range(Ordering.natural(), 3, lowerType, 4, upperType),
            GeneralRange.from(Range.range(3, lowerType, 4, upperType)));
      }
    }
  }

  public void testReverse() {
    assertEquals(GeneralRange.all(ORDERING.reverse()), GeneralRange.all(ORDERING).reverse());
    assertEquals(GeneralRange.downTo(ORDERING.reverse(), 3, CLOSED),
        GeneralRange.upTo(ORDERING, 3, CLOSED).reverse());
    assertEquals(GeneralRange.upTo(ORDERING.reverse(), 3, OPEN),
        GeneralRange.downTo(ORDERING, 3, OPEN).reverse());
    assertEquals(GeneralRange.range(ORDERING.reverse(), 5, OPEN, 3, CLOSED),
        GeneralRange.range(ORDERING, 3, CLOSED, 5, OPEN).reverse());
  }

  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    new NullPointerTester().testAllPublicStaticMethods(GeneralRange.class);
  }
}

Other Java examples (source code examples)

Here is a short list of links related to this Java GeneralRangeTest.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.