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Commit e89b8d8

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Boolean Utils
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‎README.md

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@@ -154,7 +154,7 @@ Below topics/problems are covered as of now.
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- [ ] NumberUtils
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- [X] [ArrayUtils](../master/src/com/deepak/data/structures/Utils/ArrayUtils.java)
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- [ ] ListUtils
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- [ ]BooleanUtils
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- [X][BooleanUtils](../master/src/com/deepak/data/structures/Utils/BooleanUtils.java)
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- [ ] CollectionUtils
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- [ ] MapUtils
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- [ ] DateUtils
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/**
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* Data-Structures-In-Java
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* BooleanUtils.java
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*/
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package com.deepak.data.structures.Utils;
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/**
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* Utilities for Boolean
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*
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* @author Deepak
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*/
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public class BooleanUtils {
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/**
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* Method to negate a Boolean
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*
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* @param bool
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* @return {@link Boolean}
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*/
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public static Boolean negate(final Boolean bool) {
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if (bool == null) {
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return null;
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}
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return bool.booleanValue() ? Boolean.FALSE : Boolean.TRUE;
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}
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/**
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* Method to check if boolean is True
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*
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* @param bool
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* @return {@link boolean}
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*/
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public static boolean isTrue(final boolean bool) {
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return Boolean.TRUE.equals(bool);
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}
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/**
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* Method to check if boolean is false
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*
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* @param bool
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* @return {@link boolean}
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*/
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public static boolean isFalse(final boolean bool) {
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return Boolean.FALSE.equals(bool);
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}
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/**
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* Method to convert Boolean object to boolean primitive
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*
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* @param bool
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* @return {@link boolean}
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*/
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public static boolean toBoolean(final Boolean bool) {
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return bool != null && bool.booleanValue();
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}
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/**
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* Method to convert int to boolean
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*
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* @param val
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* @return {@link boolean}
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*/
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public static boolean toBoolean(final int val) {
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return val != 0;
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}
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/**
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* Method to convert int to Boolean object
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*
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* @param val
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* @return {@link Boolean}
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*/
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public static Boolean toBooleanObject(final int val) {
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return val != 0 ? Boolean.TRUE : Boolean.FALSE;
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}
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/**
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* Method to compare two boolean values
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* If both the same, it returns 0, if x is true, it returns 1
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* else it returns -1
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*
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* @param x
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* @param y
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* @return {@link int}
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*/
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public static int compare(final boolean x, final boolean y) {
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if (x == y) {
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return 0;
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}
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return x ? 1 : -1;
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}
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}
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/**
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* Data-Structures-In-Java
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* BooleanUtilsTest.java
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*/
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package com.deepak.data.structures.Utils;
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import org.junit.Assert;
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import org.junit.Test;
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/**
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* Test cases for Boolean Utility functions
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*
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* @author Deepak
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*/
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public class BooleanUtilsTest {
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/**
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* Test case to check negation
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*/
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@Test
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public void testNegateBoolean() {
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Assert.assertEquals(BooleanUtils.negate(Boolean.TRUE), Boolean.FALSE);
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Assert.assertEquals(BooleanUtils.negate(Boolean.FALSE), Boolean.TRUE);
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Assert.assertEquals(BooleanUtils.negate(null), null);
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}
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/**
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* Test case to check is True
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*/
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@Test
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public void testIsTrue() {
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Assert.assertEquals(BooleanUtils.isTrue(Boolean.TRUE), true);
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Assert.assertEquals(BooleanUtils.isTrue(Boolean.FALSE), false);
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}
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/**
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* Test case to check is False
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*/
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@Test
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public void testIsFalse() {
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Assert.assertEquals(BooleanUtils.isFalse(Boolean.TRUE), false);
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Assert.assertEquals(BooleanUtils.isFalse(Boolean.FALSE), true);
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}
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/**
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* Test case to convert Boolean object to primitive boolean
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*/
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@Test
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public void testToBoolean() {
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Assert.assertEquals(BooleanUtils.toBoolean(Boolean.TRUE), true);
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Assert.assertEquals(BooleanUtils.toBoolean(Boolean.FALSE), false);
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}
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/**
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* Test case to convert int to Boolean object
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*/
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@Test
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public void testToBooleanObject() {
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Assert.assertEquals(BooleanUtils.toBooleanObject(0), Boolean.FALSE);
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Assert.assertEquals(BooleanUtils.toBooleanObject(1), Boolean.TRUE);
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Assert.assertEquals(BooleanUtils.toBooleanObject(2), Boolean.TRUE);
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}
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/**
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* Test case to compare two boolean
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*/
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@Test
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public void testCompare() {
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Assert.assertEquals(BooleanUtils.compare(true, true), 0);
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Assert.assertEquals(BooleanUtils.compare(true, false), 1);
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Assert.assertEquals(BooleanUtils.compare(false, true), -1);
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}
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}

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