Merge branch 'LANG-1174'
LANG-1174: Add sugar to RandomUtils. This closes 111 from github. Thanks to github user Punkratz312.
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commit
c9cae602ec
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@ -22,6 +22,7 @@
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<body>
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<release version="3.5" date="tba" description="tba">
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<action issue="LANG-1174" type="add" dev="britter" dute-to="Punkratz312">Add sugar to RandomUtils</action>
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<action issue="LANG-1057" type="update" dev="chas" dute-to="Otávio Santana">Replace StringBuilder with String concatenation for better optimization</action>
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<action issue="LANG-1075" type="update" dev="chas">Deprecate SystemUtils.FILE_SEPARATOR and SystemUtils.PATH_SEPARATOR</action>
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<action issue="LANG-1154" type="add" dev="chas" due-to="Gary Gregory">FastDateFormat APIs that use a StringBuilder</action>
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@ -91,6 +91,17 @@ public static int nextInt(final int startInclusive, final int endExclusive) {
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return startInclusive + RANDOM.nextInt(endExclusive - startInclusive);
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}
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/**
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* <p> Returns a random int within 0 - Integer.MAX_VALUE </p>
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*
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* @return the random integer
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* @see #nextInt(int, int)
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* @since 3.5
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*/
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public static int nextInt() {
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return nextInt(0, Integer.MAX_VALUE);
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}
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/**
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* <p>
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* Returns a random long within the specified range.
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@ -117,6 +128,16 @@ public static long nextLong(final long startInclusive, final long endExclusive)
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return (long) nextDouble(startInclusive, endExclusive);
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}
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/**
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* <p> Returns a random long within 0 - Long.MAX_VALUE </p>
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*
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* @return the random long
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* @see #nextLong(long, long)
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* @since 3.5
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*/
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public static long nextLong() {
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return nextLong(0, Long.MAX_VALUE);
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}
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/**
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* <p>
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@ -144,6 +165,17 @@ public static double nextDouble(final double startInclusive, final double endInc
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return startInclusive + ((endInclusive - startInclusive) * RANDOM.nextDouble());
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}
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/**
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* <p> Returns a random double within 0 - Double.MAX_VALUE </p>
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*
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* @return the random double
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* @see #nextDouble(double, double)
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* @since 3.5
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*/
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public static double nextDouble() {
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return nextDouble(0, Double.MAX_VALUE);
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}
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/**
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* <p>
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* Returns a random float within the specified range.
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@ -169,4 +201,15 @@ public static float nextFloat(final float startInclusive, final float endInclusi
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return startInclusive + ((endInclusive - startInclusive) * RANDOM.nextFloat());
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}
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/**
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* <p> Returns a random float within 0 - Float.MAX_VALUE </p>
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*
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* @return the random float
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* @see #nextFloat()
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* @since 3.5
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*/
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public static float nextFloat() {
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return nextFloat(0, Float.MAX_VALUE);
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}
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}
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@ -112,6 +112,16 @@ public void testNextInt() {
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assertTrue(result >= 33 && result < 42);
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}
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/**
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* Tests next double range, random result.
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*/
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@Test
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public void testNextIntRandomResult() {
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int randomResult = RandomUtils.nextInt();
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assertTrue(randomResult > 0);
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assertTrue(randomResult < Integer.MAX_VALUE);
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}
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/**
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* Test next double range with minimal range.
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*/
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@ -137,6 +147,16 @@ public void testNextDouble() {
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assertTrue(result >= 33d && result <= 42d);
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}
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/**
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* Tests next double range, random result.
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*/
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@Test
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public void testNextDoubleRandomResult() {
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double randomResult = RandomUtils.nextDouble();
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assertTrue(randomResult > 0);
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assertTrue(randomResult < Double.MAX_VALUE);
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}
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/**
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* Tests next float range.
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*/
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@ -146,6 +166,16 @@ public void testNextFloat() {
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assertTrue(result >= 33f && result <= 42f);
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}
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/**
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* Tests next float range, random result.
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*/
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@Test
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public void testNextFloatRandomResult() {
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float randomResult = RandomUtils.nextFloat();
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assertTrue(randomResult > 0);
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assertTrue(randomResult < Float.MAX_VALUE);
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}
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/**
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* Test next long range with minimal range.
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*/
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@ -163,6 +193,15 @@ public void testNextLong() {
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assertTrue(result >= 33L && result < 42L);
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}
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/**
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* Tests next long range, random result.
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*/
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@Test
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public void testNextLongRandomResult() {
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long randomResult = RandomUtils.nextLong();
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assertTrue(randomResult > 0);
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assertTrue(randomResult < Long.MAX_VALUE);
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}
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/**
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* Tests extreme range.
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