611 lines
22 KiB
Java
611 lines
22 KiB
Java
/*
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* Copyright (C) 2008 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.primitives;
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import static java.lang.Long.MAX_VALUE;
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import static java.lang.Long.MIN_VALUE;
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import com.google.common.annotations.GwtCompatible;
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import com.google.common.annotations.GwtIncompatible;
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import com.google.common.base.Converter;
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import com.google.common.collect.testing.Helpers;
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import com.google.common.testing.NullPointerTester;
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import com.google.common.testing.SerializableTester;
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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.List;
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import java.util.Random;
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import junit.framework.TestCase;
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/**
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* Unit test for {@link Longs}.
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*
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* @author Kevin Bourrillion
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*/
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@GwtCompatible(emulated = true)
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@SuppressWarnings("cast") // redundant casts are intentional and harmless
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public class LongsTest extends TestCase {
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private static final long[] EMPTY = {};
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private static final long[] ARRAY1 = {(long) 1};
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private static final long[] ARRAY234 = {(long) 2, (long) 3, (long) 4};
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private static final long[] VALUES = {MIN_VALUE, (long) -1, (long) 0, (long) 1, MAX_VALUE};
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@GwtIncompatible // Long.hashCode returns different values in GWT.
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public void testHashCode() {
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for (long value : VALUES) {
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assertEquals("hashCode for " + value, ((Long) value).hashCode(), Longs.hashCode(value));
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}
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}
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public void testCompare() {
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for (long x : VALUES) {
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for (long y : VALUES) {
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// note: spec requires only that the sign is the same
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assertEquals(x + ", " + y, Long.valueOf(x).compareTo(y), Longs.compare(x, y));
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}
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}
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}
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public void testContains() {
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assertFalse(Longs.contains(EMPTY, (long) 1));
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assertFalse(Longs.contains(ARRAY1, (long) 2));
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assertFalse(Longs.contains(ARRAY234, (long) 1));
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assertTrue(Longs.contains(new long[] {(long) -1}, (long) -1));
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assertTrue(Longs.contains(ARRAY234, (long) 2));
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assertTrue(Longs.contains(ARRAY234, (long) 3));
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assertTrue(Longs.contains(ARRAY234, (long) 4));
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}
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public void testIndexOf() {
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assertEquals(-1, Longs.indexOf(EMPTY, (long) 1));
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assertEquals(-1, Longs.indexOf(ARRAY1, (long) 2));
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assertEquals(-1, Longs.indexOf(ARRAY234, (long) 1));
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assertEquals(0, Longs.indexOf(new long[] {(long) -1}, (long) -1));
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assertEquals(0, Longs.indexOf(ARRAY234, (long) 2));
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assertEquals(1, Longs.indexOf(ARRAY234, (long) 3));
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assertEquals(2, Longs.indexOf(ARRAY234, (long) 4));
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assertEquals(1, Longs.indexOf(new long[] {(long) 2, (long) 3, (long) 2, (long) 3}, (long) 3));
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}
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public void testIndexOf_arrayTarget() {
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assertEquals(0, Longs.indexOf(EMPTY, EMPTY));
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assertEquals(0, Longs.indexOf(ARRAY234, EMPTY));
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assertEquals(-1, Longs.indexOf(EMPTY, ARRAY234));
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assertEquals(-1, Longs.indexOf(ARRAY234, ARRAY1));
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assertEquals(-1, Longs.indexOf(ARRAY1, ARRAY234));
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assertEquals(0, Longs.indexOf(ARRAY1, ARRAY1));
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assertEquals(0, Longs.indexOf(ARRAY234, ARRAY234));
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assertEquals(0, Longs.indexOf(ARRAY234, new long[] {(long) 2, (long) 3}));
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assertEquals(1, Longs.indexOf(ARRAY234, new long[] {(long) 3, (long) 4}));
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assertEquals(1, Longs.indexOf(ARRAY234, new long[] {(long) 3}));
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assertEquals(2, Longs.indexOf(ARRAY234, new long[] {(long) 4}));
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assertEquals(
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1,
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Longs.indexOf(
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new long[] {(long) 2, (long) 3, (long) 3, (long) 3, (long) 3}, new long[] {(long) 3}));
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assertEquals(
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2,
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Longs.indexOf(
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new long[] {(long) 2, (long) 3, (long) 2, (long) 3, (long) 4, (long) 2, (long) 3},
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new long[] {(long) 2, (long) 3, (long) 4}));
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assertEquals(
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1,
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Longs.indexOf(
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new long[] {(long) 2, (long) 2, (long) 3, (long) 4, (long) 2, (long) 3, (long) 4},
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new long[] {(long) 2, (long) 3, (long) 4}));
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assertEquals(
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-1,
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Longs.indexOf(
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new long[] {(long) 4, (long) 3, (long) 2}, new long[] {(long) 2, (long) 3, (long) 4}));
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}
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public void testLastIndexOf() {
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assertEquals(-1, Longs.lastIndexOf(EMPTY, (long) 1));
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assertEquals(-1, Longs.lastIndexOf(ARRAY1, (long) 2));
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assertEquals(-1, Longs.lastIndexOf(ARRAY234, (long) 1));
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assertEquals(0, Longs.lastIndexOf(new long[] {(long) -1}, (long) -1));
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assertEquals(0, Longs.lastIndexOf(ARRAY234, (long) 2));
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assertEquals(1, Longs.lastIndexOf(ARRAY234, (long) 3));
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assertEquals(2, Longs.lastIndexOf(ARRAY234, (long) 4));
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assertEquals(
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3, Longs.lastIndexOf(new long[] {(long) 2, (long) 3, (long) 2, (long) 3}, (long) 3));
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}
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public void testMax_noArgs() {
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try {
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Longs.max();
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fail();
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} catch (IllegalArgumentException expected) {
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}
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}
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public void testMax() {
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assertEquals(MIN_VALUE, Longs.max(MIN_VALUE));
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assertEquals(MAX_VALUE, Longs.max(MAX_VALUE));
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assertEquals(
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(long) 9, Longs.max((long) 8, (long) 6, (long) 7, (long) 5, (long) 3, (long) 0, (long) 9));
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}
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public void testMin_noArgs() {
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try {
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Longs.min();
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fail();
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} catch (IllegalArgumentException expected) {
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}
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}
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public void testMin() {
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assertEquals(MIN_VALUE, Longs.min(MIN_VALUE));
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assertEquals(MAX_VALUE, Longs.min(MAX_VALUE));
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assertEquals(
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(long) 0, Longs.min((long) 8, (long) 6, (long) 7, (long) 5, (long) 3, (long) 0, (long) 9));
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}
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public void testConstrainToRange() {
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assertEquals((long) 1, Longs.constrainToRange((long) 1, (long) 0, (long) 5));
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assertEquals((long) 1, Longs.constrainToRange((long) 1, (long) 1, (long) 5));
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assertEquals((long) 3, Longs.constrainToRange((long) 1, (long) 3, (long) 5));
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assertEquals((long) -1, Longs.constrainToRange((long) 0, (long) -5, (long) -1));
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assertEquals((long) 2, Longs.constrainToRange((long) 5, (long) 2, (long) 2));
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try {
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Longs.constrainToRange((long) 1, (long) 3, (long) 2);
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fail();
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} catch (IllegalArgumentException expected) {
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}
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}
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public void testConcat() {
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assertTrue(Arrays.equals(EMPTY, Longs.concat()));
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assertTrue(Arrays.equals(EMPTY, Longs.concat(EMPTY)));
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assertTrue(Arrays.equals(EMPTY, Longs.concat(EMPTY, EMPTY, EMPTY)));
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assertTrue(Arrays.equals(ARRAY1, Longs.concat(ARRAY1)));
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assertNotSame(ARRAY1, Longs.concat(ARRAY1));
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assertTrue(Arrays.equals(ARRAY1, Longs.concat(EMPTY, ARRAY1, EMPTY)));
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assertTrue(
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Arrays.equals(
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new long[] {(long) 1, (long) 1, (long) 1}, Longs.concat(ARRAY1, ARRAY1, ARRAY1)));
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assertTrue(
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Arrays.equals(
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new long[] {(long) 1, (long) 2, (long) 3, (long) 4}, Longs.concat(ARRAY1, ARRAY234)));
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}
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private static void assertByteArrayEquals(byte[] expected, byte[] actual) {
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assertTrue(
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"Expected: " + Arrays.toString(expected) + ", but got: " + Arrays.toString(actual),
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Arrays.equals(expected, actual));
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}
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public void testToByteArray() {
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assertByteArrayEquals(
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new byte[] {0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19},
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Longs.toByteArray(0x1213141516171819L));
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assertByteArrayEquals(
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new byte[] {
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(byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC,
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(byte) 0xBB, (byte) 0xAA, (byte) 0x99, (byte) 0x88
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},
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Longs.toByteArray(0xFFEEDDCCBBAA9988L));
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}
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public void testFromByteArray() {
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assertEquals(
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0x1213141516171819L,
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Longs.fromByteArray(new byte[] {0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x33}));
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assertEquals(
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0xFFEEDDCCBBAA9988L,
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Longs.fromByteArray(
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new byte[] {
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(byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC,
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(byte) 0xBB, (byte) 0xAA, (byte) 0x99, (byte) 0x88
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}));
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}
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public void testFromByteArrayFails() {
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try {
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Longs.fromByteArray(new byte[Longs.BYTES - 1]);
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fail();
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} catch (IllegalArgumentException expected) {
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}
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}
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public void testFromBytes() {
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assertEquals(
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0x1213141516171819L,
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Longs.fromBytes(
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(byte) 0x12,
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(byte) 0x13,
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(byte) 0x14,
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(byte) 0x15,
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(byte) 0x16,
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(byte) 0x17,
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(byte) 0x18,
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(byte) 0x19));
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assertEquals(
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0xFFEEDDCCBBAA9988L,
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Longs.fromBytes(
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(byte) 0xFF,
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(byte) 0xEE,
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(byte) 0xDD,
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(byte) 0xCC,
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(byte) 0xBB,
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(byte) 0xAA,
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(byte) 0x99,
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(byte) 0x88));
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}
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public void testByteArrayRoundTrips() {
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Random r = new Random(5);
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byte[] b = new byte[Longs.BYTES];
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for (int i = 0; i < 1000; i++) {
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long num = r.nextLong();
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assertEquals(num, Longs.fromByteArray(Longs.toByteArray(num)));
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r.nextBytes(b);
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long value = Longs.fromByteArray(b);
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assertTrue("" + value, Arrays.equals(b, Longs.toByteArray(value)));
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}
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}
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public void testEnsureCapacity() {
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assertSame(EMPTY, Longs.ensureCapacity(EMPTY, 0, 1));
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assertSame(ARRAY1, Longs.ensureCapacity(ARRAY1, 0, 1));
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assertSame(ARRAY1, Longs.ensureCapacity(ARRAY1, 1, 1));
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assertTrue(
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Arrays.equals(
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new long[] {(long) 1, (long) 0, (long) 0}, Longs.ensureCapacity(ARRAY1, 2, 1)));
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}
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public void testEnsureCapacity_fail() {
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try {
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Longs.ensureCapacity(ARRAY1, -1, 1);
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fail();
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} catch (IllegalArgumentException expected) {
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}
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try {
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// notice that this should even fail when no growth was needed
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Longs.ensureCapacity(ARRAY1, 1, -1);
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fail();
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} catch (IllegalArgumentException expected) {
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}
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}
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public void testJoin() {
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assertEquals("", Longs.join(",", EMPTY));
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assertEquals("1", Longs.join(",", ARRAY1));
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assertEquals("1,2", Longs.join(",", (long) 1, (long) 2));
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assertEquals("123", Longs.join("", (long) 1, (long) 2, (long) 3));
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}
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public void testLexicographicalComparator() {
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List<long[]> ordered =
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Arrays.asList(
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new long[] {},
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new long[] {MIN_VALUE},
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new long[] {MIN_VALUE, MIN_VALUE},
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new long[] {MIN_VALUE, (long) 1},
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new long[] {(long) 1},
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new long[] {(long) 1, MIN_VALUE},
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new long[] {MAX_VALUE, MAX_VALUE - (long) 1},
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new long[] {MAX_VALUE, MAX_VALUE},
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new long[] {MAX_VALUE, MAX_VALUE, MAX_VALUE});
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Comparator<long[]> comparator = Longs.lexicographicalComparator();
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Helpers.testComparator(comparator, ordered);
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}
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@GwtIncompatible // SerializableTester
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public void testLexicographicalComparatorSerializable() {
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Comparator<long[]> comparator = Longs.lexicographicalComparator();
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assertSame(comparator, SerializableTester.reserialize(comparator));
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}
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public void testReverse() {
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testReverse(new long[] {}, new long[] {});
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testReverse(new long[] {1}, new long[] {1});
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testReverse(new long[] {1, 2}, new long[] {2, 1});
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testReverse(new long[] {3, 1, 1}, new long[] {1, 1, 3});
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testReverse(new long[] {-1, 1, -2, 2}, new long[] {2, -2, 1, -1});
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}
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private static void testReverse(long[] input, long[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Longs.reverse(input);
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assertTrue(Arrays.equals(expectedOutput, input));
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}
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private static void testReverse(long[] input, int fromIndex, int toIndex, long[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Longs.reverse(input, fromIndex, toIndex);
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assertTrue(Arrays.equals(expectedOutput, input));
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}
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public void testReverseIndexed() {
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testReverse(new long[] {}, 0, 0, new long[] {});
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testReverse(new long[] {1}, 0, 1, new long[] {1});
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testReverse(new long[] {1, 2}, 0, 2, new long[] {2, 1});
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testReverse(new long[] {3, 1, 1}, 0, 2, new long[] {1, 3, 1});
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testReverse(new long[] {3, 1, 1}, 0, 1, new long[] {3, 1, 1});
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testReverse(new long[] {-1, 1, -2, 2}, 1, 3, new long[] {-1, -2, 1, 2});
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}
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public void testSortDescending() {
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testSortDescending(new long[] {}, new long[] {});
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testSortDescending(new long[] {1}, new long[] {1});
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testSortDescending(new long[] {1, 2}, new long[] {2, 1});
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testSortDescending(new long[] {1, 3, 1}, new long[] {3, 1, 1});
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testSortDescending(new long[] {-1, 1, -2, 2}, new long[] {2, 1, -1, -2});
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}
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private static void testSortDescending(long[] input, long[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Longs.sortDescending(input);
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assertTrue(Arrays.equals(expectedOutput, input));
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}
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private static void testSortDescending(
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long[] input, int fromIndex, int toIndex, long[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Longs.sortDescending(input, fromIndex, toIndex);
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assertTrue(Arrays.equals(expectedOutput, input));
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}
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public void testSortDescendingIndexed() {
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testSortDescending(new long[] {}, 0, 0, new long[] {});
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testSortDescending(new long[] {1}, 0, 1, new long[] {1});
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testSortDescending(new long[] {1, 2}, 0, 2, new long[] {2, 1});
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testSortDescending(new long[] {1, 3, 1}, 0, 2, new long[] {3, 1, 1});
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testSortDescending(new long[] {1, 3, 1}, 0, 1, new long[] {1, 3, 1});
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testSortDescending(new long[] {-1, -2, 1, 2}, 1, 3, new long[] {-1, 1, -2, 2});
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}
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@GwtIncompatible // SerializableTester
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public void testStringConverterSerialization() {
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SerializableTester.reserializeAndAssert(Longs.stringConverter());
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}
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public void testToArray() {
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// need explicit type parameter to avoid javac warning!?
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List<Long> none = Arrays.<Long>asList();
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assertTrue(Arrays.equals(EMPTY, Longs.toArray(none)));
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List<Long> one = Arrays.asList((long) 1);
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assertTrue(Arrays.equals(ARRAY1, Longs.toArray(one)));
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long[] array = {(long) 0, (long) 1, 0x0FF1C1AL};
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List<Long> three = Arrays.asList((long) 0, (long) 1, 0x0FF1C1AL);
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assertTrue(Arrays.equals(array, Longs.toArray(three)));
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assertTrue(Arrays.equals(array, Longs.toArray(Longs.asList(array))));
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}
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public void testToArray_threadSafe() {
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for (int delta : new int[] {+1, 0, -1}) {
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for (int i = 0; i < VALUES.length; i++) {
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List<Long> list = Longs.asList(VALUES).subList(0, i);
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Collection<Long> misleadingSize = Helpers.misleadingSizeCollection(delta);
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misleadingSize.addAll(list);
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long[] arr = Longs.toArray(misleadingSize);
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assertEquals(i, arr.length);
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for (int j = 0; j < i; j++) {
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assertEquals(VALUES[j], arr[j]);
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}
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}
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}
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}
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public void testToArray_withNull() {
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List<Long> list = Arrays.asList((long) 0, (long) 1, null);
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try {
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Longs.toArray(list);
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fail();
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} catch (NullPointerException expected) {
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}
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}
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public void testToArray_withConversion() {
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long[] array = {(long) 0, (long) 1, (long) 2};
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List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
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List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);
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List<Integer> ints = Arrays.asList(0, 1, 2);
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List<Float> floats = Arrays.asList((float) 0, (float) 1, (float) 2);
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List<Long> longs = Arrays.asList((long) 0, (long) 1, (long) 2);
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List<Double> doubles = Arrays.asList((double) 0, (double) 1, (double) 2);
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assertTrue(Arrays.equals(array, Longs.toArray(bytes)));
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assertTrue(Arrays.equals(array, Longs.toArray(shorts)));
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assertTrue(Arrays.equals(array, Longs.toArray(ints)));
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assertTrue(Arrays.equals(array, Longs.toArray(floats)));
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assertTrue(Arrays.equals(array, Longs.toArray(longs)));
|
|
assertTrue(Arrays.equals(array, Longs.toArray(doubles)));
|
|
}
|
|
|
|
public void testAsList_isAView() {
|
|
long[] array = {(long) 0, (long) 1};
|
|
List<Long> list = Longs.asList(array);
|
|
list.set(0, (long) 2);
|
|
assertTrue(Arrays.equals(new long[] {(long) 2, (long) 1}, array));
|
|
array[1] = (long) 3;
|
|
assertEquals(Arrays.asList((long) 2, (long) 3), list);
|
|
}
|
|
|
|
public void testAsList_toArray_roundTrip() {
|
|
long[] array = {(long) 0, (long) 1, (long) 2};
|
|
List<Long> list = Longs.asList(array);
|
|
long[] newArray = Longs.toArray(list);
|
|
|
|
// Make sure it returned a copy
|
|
list.set(0, (long) 4);
|
|
assertTrue(Arrays.equals(new long[] {(long) 0, (long) 1, (long) 2}, newArray));
|
|
newArray[1] = (long) 5;
|
|
assertEquals((long) 1, (long) list.get(1));
|
|
}
|
|
|
|
// This test stems from a real bug found by andrewk
|
|
public void testAsList_subList_toArray_roundTrip() {
|
|
long[] array = {(long) 0, (long) 1, (long) 2, (long) 3};
|
|
List<Long> list = Longs.asList(array);
|
|
assertTrue(Arrays.equals(new long[] {(long) 1, (long) 2}, Longs.toArray(list.subList(1, 3))));
|
|
assertTrue(Arrays.equals(new long[] {}, Longs.toArray(list.subList(2, 2))));
|
|
}
|
|
|
|
public void testAsListEmpty() {
|
|
assertSame(Collections.emptyList(), Longs.asList(EMPTY));
|
|
}
|
|
|
|
@GwtIncompatible // NullPointerTester
|
|
public void testNulls() {
|
|
new NullPointerTester().testAllPublicStaticMethods(Longs.class);
|
|
}
|
|
|
|
public void testStringConverter_convert() {
|
|
Converter<String, Long> converter = Longs.stringConverter();
|
|
assertEquals((Long) 1L, converter.convert("1"));
|
|
assertEquals((Long) 0L, converter.convert("0"));
|
|
assertEquals((Long) (-1L), converter.convert("-1"));
|
|
assertEquals((Long) 255L, converter.convert("0xff"));
|
|
assertEquals((Long) 255L, converter.convert("0xFF"));
|
|
assertEquals((Long) (-255L), converter.convert("-0xFF"));
|
|
assertEquals((Long) 255L, converter.convert("#0000FF"));
|
|
assertEquals((Long) 438L, converter.convert("0666"));
|
|
}
|
|
|
|
public void testStringConverter_convertError() {
|
|
try {
|
|
Longs.stringConverter().convert("notanumber");
|
|
fail();
|
|
} catch (NumberFormatException expected) {
|
|
}
|
|
}
|
|
|
|
public void testStringConverter_nullConversions() {
|
|
assertNull(Longs.stringConverter().convert(null));
|
|
assertNull(Longs.stringConverter().reverse().convert(null));
|
|
}
|
|
|
|
public void testStringConverter_reverse() {
|
|
Converter<String, Long> converter = Longs.stringConverter();
|
|
assertEquals("1", converter.reverse().convert(1L));
|
|
assertEquals("0", converter.reverse().convert(0L));
|
|
assertEquals("-1", converter.reverse().convert(-1L));
|
|
assertEquals("255", converter.reverse().convert(0xffL));
|
|
assertEquals("255", converter.reverse().convert(0xFFL));
|
|
assertEquals("-255", converter.reverse().convert(-0xFFL));
|
|
assertEquals("438", converter.reverse().convert(0666L));
|
|
}
|
|
|
|
@GwtIncompatible // NullPointerTester
|
|
public void testStringConverter_nullPointerTester() throws Exception {
|
|
NullPointerTester tester = new NullPointerTester();
|
|
tester.testAllPublicInstanceMethods(Longs.stringConverter());
|
|
}
|
|
|
|
public void testTryParse() {
|
|
tryParseAndAssertEquals(0L, "0");
|
|
tryParseAndAssertEquals(0L, "-0");
|
|
tryParseAndAssertEquals(1L, "1");
|
|
tryParseAndAssertEquals(-1L, "-1");
|
|
tryParseAndAssertEquals(8900L, "8900");
|
|
tryParseAndAssertEquals(-8900L, "-8900");
|
|
tryParseAndAssertEquals(MAX_VALUE, Long.toString(MAX_VALUE));
|
|
tryParseAndAssertEquals(MIN_VALUE, Long.toString(MIN_VALUE));
|
|
assertNull(Longs.tryParse(""));
|
|
assertNull(Longs.tryParse("-"));
|
|
assertNull(Longs.tryParse("+1"));
|
|
assertNull(Longs.tryParse("999999999999999999999999"));
|
|
assertNull(
|
|
"Max long + 1",
|
|
Longs.tryParse(BigInteger.valueOf(MAX_VALUE).add(BigInteger.ONE).toString()));
|
|
assertNull(
|
|
"Max long * 10",
|
|
Longs.tryParse(BigInteger.valueOf(MAX_VALUE).multiply(BigInteger.TEN).toString()));
|
|
assertNull(
|
|
"Min long - 1",
|
|
Longs.tryParse(BigInteger.valueOf(MIN_VALUE).subtract(BigInteger.ONE).toString()));
|
|
assertNull(
|
|
"Min long * 10",
|
|
Longs.tryParse(BigInteger.valueOf(MIN_VALUE).multiply(BigInteger.TEN).toString()));
|
|
assertNull(Longs.tryParse("\u0662\u06f3"));
|
|
}
|
|
|
|
/**
|
|
* Applies {@link Longs#tryParse(String)} to the given string and asserts that the result is as
|
|
* expected.
|
|
*/
|
|
private static void tryParseAndAssertEquals(Long expected, String value) {
|
|
assertEquals(expected, Longs.tryParse(value));
|
|
}
|
|
|
|
public void testTryParse_radix() {
|
|
for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
|
|
radixEncodeParseAndAssertEquals((long) 0, radix);
|
|
radixEncodeParseAndAssertEquals((long) 8000, radix);
|
|
radixEncodeParseAndAssertEquals((long) -8000, radix);
|
|
radixEncodeParseAndAssertEquals(MAX_VALUE, radix);
|
|
radixEncodeParseAndAssertEquals(MIN_VALUE, radix);
|
|
assertNull("Radix: " + radix, Longs.tryParse("999999999999999999999999", radix));
|
|
assertNull(
|
|
"Radix: " + radix,
|
|
Longs.tryParse(BigInteger.valueOf(MAX_VALUE).add(BigInteger.ONE).toString(), radix));
|
|
assertNull(
|
|
"Radix: " + radix,
|
|
Longs.tryParse(BigInteger.valueOf(MIN_VALUE).subtract(BigInteger.ONE).toString(), radix));
|
|
}
|
|
assertNull("Hex string and dec parm", Longs.tryParse("FFFF", 10));
|
|
assertEquals("Mixed hex case", 65535, Longs.tryParse("ffFF", 16).longValue());
|
|
}
|
|
|
|
/**
|
|
* Encodes the long as a string with given radix, then uses {@link Longs#tryParse(String, int)} to
|
|
* parse the result. Asserts the result is the same as what we started with.
|
|
*/
|
|
private static void radixEncodeParseAndAssertEquals(Long value, int radix) {
|
|
assertEquals("Radix: " + radix, value, Longs.tryParse(Long.toString(value, radix), radix));
|
|
}
|
|
|
|
public void testTryParse_radixTooBig() {
|
|
try {
|
|
Longs.tryParse("0", Character.MAX_RADIX + 1);
|
|
fail();
|
|
} catch (IllegalArgumentException expected) {
|
|
}
|
|
}
|
|
|
|
public void testTryParse_radixTooSmall() {
|
|
try {
|
|
Longs.tryParse("0", Character.MIN_RADIX - 1);
|
|
fail();
|
|
} catch (IllegalArgumentException expected) {
|
|
}
|
|
}
|
|
|
|
public void testTryParse_withNullGwt() {
|
|
assertNull(Longs.tryParse("null"));
|
|
try {
|
|
Longs.tryParse(null);
|
|
fail("Expected NPE");
|
|
} catch (NullPointerException expected) {
|
|
}
|
|
}
|
|
}
|