590 lines
22 KiB
Java
590 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 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.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 Ints}.
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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 IntsTest extends TestCase {
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private static final int[] EMPTY = {};
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private static final int[] ARRAY1 = {(int) 1};
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private static final int[] ARRAY234 = {(int) 2, (int) 3, (int) 4};
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private static final int LEAST = Integer.MIN_VALUE;
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private static final int GREATEST = Integer.MAX_VALUE;
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private static final int[] VALUES = {LEAST, (int) -1, (int) 0, (int) 1, GREATEST};
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public void testHashCode() {
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for (int value : VALUES) {
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assertEquals(((Integer) value).hashCode(), Ints.hashCode(value));
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}
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}
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public void testCheckedCast() {
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for (int value : VALUES) {
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assertEquals(value, Ints.checkedCast((long) value));
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}
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assertCastFails(GREATEST + 1L);
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assertCastFails(LEAST - 1L);
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assertCastFails(Long.MAX_VALUE);
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assertCastFails(Long.MIN_VALUE);
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}
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public void testSaturatedCast() {
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for (int value : VALUES) {
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assertEquals(value, Ints.saturatedCast((long) value));
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}
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assertEquals(GREATEST, Ints.saturatedCast(GREATEST + 1L));
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assertEquals(LEAST, Ints.saturatedCast(LEAST - 1L));
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assertEquals(GREATEST, Ints.saturatedCast(Long.MAX_VALUE));
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assertEquals(LEAST, Ints.saturatedCast(Long.MIN_VALUE));
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}
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private static void assertCastFails(long value) {
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try {
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Ints.checkedCast(value);
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fail("Cast to int should have failed: " + value);
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} catch (IllegalArgumentException ex) {
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assertTrue(
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value + " not found in exception text: " + ex.getMessage(),
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ex.getMessage().contains(String.valueOf(value)));
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}
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}
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public void testCompare() {
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for (int x : VALUES) {
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for (int y : VALUES) {
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// note: spec requires only that the sign is the same
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assertEquals(x + ", " + y, Integer.valueOf(x).compareTo(y), Ints.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(Ints.contains(EMPTY, (int) 1));
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assertFalse(Ints.contains(ARRAY1, (int) 2));
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assertFalse(Ints.contains(ARRAY234, (int) 1));
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assertTrue(Ints.contains(new int[] {(int) -1}, (int) -1));
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assertTrue(Ints.contains(ARRAY234, (int) 2));
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assertTrue(Ints.contains(ARRAY234, (int) 3));
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assertTrue(Ints.contains(ARRAY234, (int) 4));
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}
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public void testIndexOf() {
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assertEquals(-1, Ints.indexOf(EMPTY, (int) 1));
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assertEquals(-1, Ints.indexOf(ARRAY1, (int) 2));
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assertEquals(-1, Ints.indexOf(ARRAY234, (int) 1));
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assertEquals(0, Ints.indexOf(new int[] {(int) -1}, (int) -1));
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assertEquals(0, Ints.indexOf(ARRAY234, (int) 2));
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assertEquals(1, Ints.indexOf(ARRAY234, (int) 3));
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assertEquals(2, Ints.indexOf(ARRAY234, (int) 4));
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assertEquals(1, Ints.indexOf(new int[] {(int) 2, (int) 3, (int) 2, (int) 3}, (int) 3));
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}
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public void testIndexOf_arrayTarget() {
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assertEquals(0, Ints.indexOf(EMPTY, EMPTY));
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assertEquals(0, Ints.indexOf(ARRAY234, EMPTY));
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assertEquals(-1, Ints.indexOf(EMPTY, ARRAY234));
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assertEquals(-1, Ints.indexOf(ARRAY234, ARRAY1));
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assertEquals(-1, Ints.indexOf(ARRAY1, ARRAY234));
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assertEquals(0, Ints.indexOf(ARRAY1, ARRAY1));
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assertEquals(0, Ints.indexOf(ARRAY234, ARRAY234));
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assertEquals(0, Ints.indexOf(ARRAY234, new int[] {(int) 2, (int) 3}));
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assertEquals(1, Ints.indexOf(ARRAY234, new int[] {(int) 3, (int) 4}));
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assertEquals(1, Ints.indexOf(ARRAY234, new int[] {(int) 3}));
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assertEquals(2, Ints.indexOf(ARRAY234, new int[] {(int) 4}));
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assertEquals(
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1,
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Ints.indexOf(new int[] {(int) 2, (int) 3, (int) 3, (int) 3, (int) 3}, new int[] {(int) 3}));
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assertEquals(
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2,
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Ints.indexOf(
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new int[] {(int) 2, (int) 3, (int) 2, (int) 3, (int) 4, (int) 2, (int) 3},
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new int[] {(int) 2, (int) 3, (int) 4}));
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assertEquals(
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1,
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Ints.indexOf(
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new int[] {(int) 2, (int) 2, (int) 3, (int) 4, (int) 2, (int) 3, (int) 4},
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new int[] {(int) 2, (int) 3, (int) 4}));
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assertEquals(
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-1,
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Ints.indexOf(new int[] {(int) 4, (int) 3, (int) 2}, new int[] {(int) 2, (int) 3, (int) 4}));
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}
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public void testLastIndexOf() {
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assertEquals(-1, Ints.lastIndexOf(EMPTY, (int) 1));
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assertEquals(-1, Ints.lastIndexOf(ARRAY1, (int) 2));
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assertEquals(-1, Ints.lastIndexOf(ARRAY234, (int) 1));
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assertEquals(0, Ints.lastIndexOf(new int[] {(int) -1}, (int) -1));
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assertEquals(0, Ints.lastIndexOf(ARRAY234, (int) 2));
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assertEquals(1, Ints.lastIndexOf(ARRAY234, (int) 3));
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assertEquals(2, Ints.lastIndexOf(ARRAY234, (int) 4));
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assertEquals(3, Ints.lastIndexOf(new int[] {(int) 2, (int) 3, (int) 2, (int) 3}, (int) 3));
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}
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@GwtIncompatible
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public void testMax_noArgs() {
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try {
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Ints.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(LEAST, Ints.max(LEAST));
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assertEquals(GREATEST, Ints.max(GREATEST));
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assertEquals((int) 9, Ints.max((int) 8, (int) 6, (int) 7, (int) 5, (int) 3, (int) 0, (int) 9));
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}
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@GwtIncompatible
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public void testMin_noArgs() {
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try {
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Ints.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(LEAST, Ints.min(LEAST));
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assertEquals(GREATEST, Ints.min(GREATEST));
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assertEquals((int) 0, Ints.min((int) 8, (int) 6, (int) 7, (int) 5, (int) 3, (int) 0, (int) 9));
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}
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public void testConstrainToRange() {
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assertEquals((int) 1, Ints.constrainToRange((int) 1, (int) 0, (int) 5));
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assertEquals((int) 1, Ints.constrainToRange((int) 1, (int) 1, (int) 5));
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assertEquals((int) 3, Ints.constrainToRange((int) 1, (int) 3, (int) 5));
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assertEquals((int) -1, Ints.constrainToRange((int) 0, (int) -5, (int) -1));
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assertEquals((int) 2, Ints.constrainToRange((int) 5, (int) 2, (int) 2));
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try {
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Ints.constrainToRange((int) 1, (int) 3, (int) 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, Ints.concat()));
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assertTrue(Arrays.equals(EMPTY, Ints.concat(EMPTY)));
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assertTrue(Arrays.equals(EMPTY, Ints.concat(EMPTY, EMPTY, EMPTY)));
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assertTrue(Arrays.equals(ARRAY1, Ints.concat(ARRAY1)));
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assertNotSame(ARRAY1, Ints.concat(ARRAY1));
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assertTrue(Arrays.equals(ARRAY1, Ints.concat(EMPTY, ARRAY1, EMPTY)));
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assertTrue(
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Arrays.equals(new int[] {(int) 1, (int) 1, (int) 1}, Ints.concat(ARRAY1, ARRAY1, ARRAY1)));
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assertTrue(
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Arrays.equals(
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new int[] {(int) 1, (int) 2, (int) 3, (int) 4}, Ints.concat(ARRAY1, ARRAY234)));
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}
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public void testToByteArray() {
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assertTrue(Arrays.equals(new byte[] {0x12, 0x13, 0x14, 0x15}, Ints.toByteArray(0x12131415)));
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assertTrue(
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Arrays.equals(
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new byte[] {(byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC},
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Ints.toByteArray(0xFFEEDDCC)));
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}
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public void testFromByteArray() {
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assertEquals(0x12131415, Ints.fromByteArray(new byte[] {0x12, 0x13, 0x14, 0x15, 0x33}));
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assertEquals(
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0xFFEEDDCC,
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Ints.fromByteArray(new byte[] {(byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC}));
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}
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public void testFromByteArrayFails() {
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try {
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Ints.fromByteArray(new byte[Ints.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(0x12131415, Ints.fromBytes((byte) 0x12, (byte) 0x13, (byte) 0x14, (byte) 0x15));
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assertEquals(0xFFEEDDCC, Ints.fromBytes((byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC));
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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[Ints.BYTES];
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// total overkill, but, it takes 0.1 sec so why not...
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for (int i = 0; i < 10000; i++) {
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int num = r.nextInt();
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assertEquals(num, Ints.fromByteArray(Ints.toByteArray(num)));
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r.nextBytes(b);
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assertTrue(Arrays.equals(b, Ints.toByteArray(Ints.fromByteArray(b))));
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}
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}
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public void testEnsureCapacity() {
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assertSame(EMPTY, Ints.ensureCapacity(EMPTY, 0, 1));
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assertSame(ARRAY1, Ints.ensureCapacity(ARRAY1, 0, 1));
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assertSame(ARRAY1, Ints.ensureCapacity(ARRAY1, 1, 1));
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assertTrue(
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Arrays.equals(new int[] {(int) 1, (int) 0, (int) 0}, Ints.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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Ints.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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Ints.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("", Ints.join(",", EMPTY));
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assertEquals("1", Ints.join(",", ARRAY1));
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assertEquals("1,2", Ints.join(",", (int) 1, (int) 2));
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assertEquals("123", Ints.join("", (int) 1, (int) 2, (int) 3));
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}
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public void testLexicographicalComparator() {
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List<int[]> ordered =
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Arrays.asList(
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new int[] {},
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new int[] {LEAST},
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new int[] {LEAST, LEAST},
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new int[] {LEAST, (int) 1},
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new int[] {(int) 1},
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new int[] {(int) 1, LEAST},
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new int[] {GREATEST, GREATEST - (int) 1},
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new int[] {GREATEST, GREATEST},
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new int[] {GREATEST, GREATEST, GREATEST});
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Comparator<int[]> comparator = Ints.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<int[]> comparator = Ints.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 int[] {}, new int[] {});
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testReverse(new int[] {1}, new int[] {1});
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testReverse(new int[] {1, 2}, new int[] {2, 1});
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testReverse(new int[] {3, 1, 1}, new int[] {1, 1, 3});
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testReverse(new int[] {-1, 1, -2, 2}, new int[] {2, -2, 1, -1});
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}
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private static void testReverse(int[] input, int[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Ints.reverse(input);
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assertTrue(Arrays.equals(expectedOutput, input));
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}
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private static void testReverse(int[] input, int fromIndex, int toIndex, int[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Ints.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 int[] {}, 0, 0, new int[] {});
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testReverse(new int[] {1}, 0, 1, new int[] {1});
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testReverse(new int[] {1, 2}, 0, 2, new int[] {2, 1});
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testReverse(new int[] {3, 1, 1}, 0, 2, new int[] {1, 3, 1});
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testReverse(new int[] {3, 1, 1}, 0, 1, new int[] {3, 1, 1});
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testReverse(new int[] {-1, 1, -2, 2}, 1, 3, new int[] {-1, -2, 1, 2});
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}
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public void testSortDescending() {
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testSortDescending(new int[] {}, new int[] {});
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testSortDescending(new int[] {1}, new int[] {1});
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testSortDescending(new int[] {1, 2}, new int[] {2, 1});
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testSortDescending(new int[] {1, 3, 1}, new int[] {3, 1, 1});
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testSortDescending(new int[] {-1, 1, -2, 2}, new int[] {2, 1, -1, -2});
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}
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private static void testSortDescending(int[] input, int[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Ints.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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int[] input, int fromIndex, int toIndex, int[] expectedOutput) {
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input = Arrays.copyOf(input, input.length);
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Ints.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 int[] {}, 0, 0, new int[] {});
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testSortDescending(new int[] {1}, 0, 1, new int[] {1});
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testSortDescending(new int[] {1, 2}, 0, 2, new int[] {2, 1});
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testSortDescending(new int[] {1, 3, 1}, 0, 2, new int[] {3, 1, 1});
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testSortDescending(new int[] {1, 3, 1}, 0, 1, new int[] {1, 3, 1});
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testSortDescending(new int[] {-1, -2, 1, 2}, 1, 3, new int[] {-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(Ints.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<Integer> none = Arrays.<Integer>asList();
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assertTrue(Arrays.equals(EMPTY, Ints.toArray(none)));
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List<Integer> one = Arrays.asList((int) 1);
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assertTrue(Arrays.equals(ARRAY1, Ints.toArray(one)));
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int[] array = {(int) 0, (int) 1, (int) 0xdeadbeef};
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List<Integer> three = Arrays.asList((int) 0, (int) 1, (int) 0xdeadbeef);
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assertTrue(Arrays.equals(array, Ints.toArray(three)));
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assertTrue(Arrays.equals(array, Ints.toArray(Ints.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<Integer> list = Ints.asList(VALUES).subList(0, i);
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Collection<Integer> misleadingSize = Helpers.misleadingSizeCollection(delta);
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misleadingSize.addAll(list);
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int[] arr = Ints.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<Integer> list = Arrays.asList((int) 0, (int) 1, null);
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try {
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Ints.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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int[] array = {0, 1, 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, Ints.toArray(bytes)));
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assertTrue(Arrays.equals(array, Ints.toArray(shorts)));
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assertTrue(Arrays.equals(array, Ints.toArray(ints)));
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assertTrue(Arrays.equals(array, Ints.toArray(floats)));
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assertTrue(Arrays.equals(array, Ints.toArray(longs)));
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assertTrue(Arrays.equals(array, Ints.toArray(doubles)));
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}
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public void testAsList_isAView() {
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int[] array = {(int) 0, (int) 1};
|
|
List<Integer> list = Ints.asList(array);
|
|
list.set(0, (int) 2);
|
|
assertTrue(Arrays.equals(new int[] {(int) 2, (int) 1}, array));
|
|
array[1] = (int) 3;
|
|
assertEquals(Arrays.asList((int) 2, (int) 3), list);
|
|
}
|
|
|
|
public void testAsList_toArray_roundTrip() {
|
|
int[] array = {(int) 0, (int) 1, (int) 2};
|
|
List<Integer> list = Ints.asList(array);
|
|
int[] newArray = Ints.toArray(list);
|
|
|
|
// Make sure it returned a copy
|
|
list.set(0, (int) 4);
|
|
assertTrue(Arrays.equals(new int[] {(int) 0, (int) 1, (int) 2}, newArray));
|
|
newArray[1] = (int) 5;
|
|
assertEquals((int) 1, (int) list.get(1));
|
|
}
|
|
|
|
// This test stems from a real bug found by andrewk
|
|
public void testAsList_subList_toArray_roundTrip() {
|
|
int[] array = {(int) 0, (int) 1, (int) 2, (int) 3};
|
|
List<Integer> list = Ints.asList(array);
|
|
assertTrue(Arrays.equals(new int[] {(int) 1, (int) 2}, Ints.toArray(list.subList(1, 3))));
|
|
assertTrue(Arrays.equals(new int[] {}, Ints.toArray(list.subList(2, 2))));
|
|
}
|
|
|
|
public void testAsListEmpty() {
|
|
assertSame(Collections.emptyList(), Ints.asList(EMPTY));
|
|
}
|
|
|
|
@GwtIncompatible // NullPointerTester
|
|
public void testNulls() {
|
|
new NullPointerTester().testAllPublicStaticMethods(Ints.class);
|
|
}
|
|
|
|
public void testStringConverter_convert() {
|
|
Converter<String, Integer> converter = Ints.stringConverter();
|
|
assertEquals((Integer) 1, converter.convert("1"));
|
|
assertEquals((Integer) 0, converter.convert("0"));
|
|
assertEquals((Integer) (-1), converter.convert("-1"));
|
|
assertEquals((Integer) 255, converter.convert("0xff"));
|
|
assertEquals((Integer) 255, converter.convert("0xFF"));
|
|
assertEquals((Integer) (-255), converter.convert("-0xFF"));
|
|
assertEquals((Integer) 255, converter.convert("#0000FF"));
|
|
assertEquals((Integer) 438, converter.convert("0666"));
|
|
}
|
|
|
|
public void testStringConverter_convertError() {
|
|
try {
|
|
Ints.stringConverter().convert("notanumber");
|
|
fail();
|
|
} catch (NumberFormatException expected) {
|
|
}
|
|
}
|
|
|
|
public void testStringConverter_nullConversions() {
|
|
assertNull(Ints.stringConverter().convert(null));
|
|
assertNull(Ints.stringConverter().reverse().convert(null));
|
|
}
|
|
|
|
public void testStringConverter_reverse() {
|
|
Converter<String, Integer> converter = Ints.stringConverter();
|
|
assertEquals("1", converter.reverse().convert(1));
|
|
assertEquals("0", converter.reverse().convert(0));
|
|
assertEquals("-1", converter.reverse().convert(-1));
|
|
assertEquals("255", converter.reverse().convert(0xff));
|
|
assertEquals("255", converter.reverse().convert(0xFF));
|
|
assertEquals("-255", converter.reverse().convert(-0xFF));
|
|
assertEquals("438", converter.reverse().convert(0666));
|
|
}
|
|
|
|
@GwtIncompatible // NullPointerTester
|
|
public void testStringConverter_nullPointerTester() throws Exception {
|
|
NullPointerTester tester = new NullPointerTester();
|
|
tester.testAllPublicInstanceMethods(Ints.stringConverter());
|
|
}
|
|
|
|
public void testTryParse() {
|
|
tryParseAndAssertEquals(0, "0");
|
|
tryParseAndAssertEquals(0, "-0");
|
|
tryParseAndAssertEquals(1, "1");
|
|
tryParseAndAssertEquals(-1, "-1");
|
|
tryParseAndAssertEquals(8900, "8900");
|
|
tryParseAndAssertEquals(-8900, "-8900");
|
|
tryParseAndAssertEquals(GREATEST, Integer.toString(GREATEST));
|
|
tryParseAndAssertEquals(LEAST, Integer.toString(LEAST));
|
|
assertNull(Ints.tryParse(""));
|
|
assertNull(Ints.tryParse("-"));
|
|
assertNull(Ints.tryParse("+1"));
|
|
assertNull(Ints.tryParse("9999999999999999"));
|
|
assertNull("Max integer + 1", Ints.tryParse(Long.toString(((long) GREATEST) + 1)));
|
|
assertNull("Max integer * 10", Ints.tryParse(Long.toString(((long) GREATEST) * 10)));
|
|
assertNull("Min integer - 1", Ints.tryParse(Long.toString(((long) LEAST) - 1)));
|
|
assertNull("Min integer * 10", Ints.tryParse(Long.toString(((long) LEAST) * 10)));
|
|
assertNull("Max long", Ints.tryParse(Long.toString(Long.MAX_VALUE)));
|
|
assertNull("Min long", Ints.tryParse(Long.toString(Long.MIN_VALUE)));
|
|
assertNull(Ints.tryParse("\u0662\u06f3"));
|
|
}
|
|
|
|
/**
|
|
* Applies {@link Ints#tryParse(String)} to the given string and asserts that the result is as
|
|
* expected.
|
|
*/
|
|
private static void tryParseAndAssertEquals(Integer expected, String value) {
|
|
assertEquals(expected, Ints.tryParse(value));
|
|
}
|
|
|
|
public void testTryParse_radix() {
|
|
for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
|
|
radixEncodeParseAndAssertEquals(0, radix);
|
|
radixEncodeParseAndAssertEquals(8000, radix);
|
|
radixEncodeParseAndAssertEquals(-8000, radix);
|
|
radixEncodeParseAndAssertEquals(GREATEST, radix);
|
|
radixEncodeParseAndAssertEquals(LEAST, radix);
|
|
assertNull("Radix: " + radix, Ints.tryParse("9999999999999999", radix));
|
|
assertNull(
|
|
"Radix: " + radix, Ints.tryParse(Long.toString((long) GREATEST + 1, radix), radix));
|
|
assertNull("Radix: " + radix, Ints.tryParse(Long.toString((long) LEAST - 1, radix), radix));
|
|
}
|
|
assertNull("Hex string and dec parm", Ints.tryParse("FFFF", 10));
|
|
assertEquals("Mixed hex case", 65535, (int) Ints.tryParse("ffFF", 16));
|
|
}
|
|
|
|
/**
|
|
* Encodes the an integer as a string with given radix, then uses {@link Ints#tryParse(String,
|
|
* int)} to parse the result. Asserts the result is the same as what we started with.
|
|
*/
|
|
private static void radixEncodeParseAndAssertEquals(Integer value, int radix) {
|
|
assertEquals("Radix: " + radix, value, Ints.tryParse(Integer.toString(value, radix), radix));
|
|
}
|
|
|
|
public void testTryParse_radixTooBig() {
|
|
try {
|
|
Ints.tryParse("0", Character.MAX_RADIX + 1);
|
|
fail();
|
|
} catch (IllegalArgumentException expected) {
|
|
}
|
|
}
|
|
|
|
public void testTryParse_radixTooSmall() {
|
|
try {
|
|
Ints.tryParse("0", Character.MIN_RADIX - 1);
|
|
fail();
|
|
} catch (IllegalArgumentException expected) {
|
|
}
|
|
}
|
|
|
|
public void testTryParse_withNullGwt() {
|
|
assertNull(Ints.tryParse("null"));
|
|
try {
|
|
Ints.tryParse(null);
|
|
fail("Expected NPE");
|
|
} catch (NullPointerException expected) {
|
|
}
|
|
}
|
|
}
|