114 lines
3.7 KiB
Java
114 lines
3.7 KiB
Java
/*
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* Copyright (C) 2020 The Android Open Source Project
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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 android.net;
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import static org.junit.Assert.assertArrayEquals;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import androidx.test.filters.SmallTest;
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import androidx.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.concurrent.TimeUnit;
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/**
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* A simple class that tests dependencies to java standard tools from the
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* Network stack. These tests are not meant to be comprehensive tests of
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* the relevant APIs : such tests belong in the relevant test suite for
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* these dependencies. Instead, this just makes sure coverage is present
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* by calling the methods in the exact way (or a representative way of how)
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* they are called in the network stack.
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*/
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@RunWith(AndroidJUnit4.class)
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@SmallTest
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public class DependenciesTest {
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// Used to in ipmemorystore's RegularMaintenanceJobService to convert
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// 24 hours into seconds
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@Test
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public void testTimeUnit() {
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final int hours = 24;
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final long inSeconds = TimeUnit.HOURS.toMillis(hours);
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assertEquals(inSeconds, hours * 60 * 60 * 1000);
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}
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private byte[] makeTrivialArray(final int size) {
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final byte[] src = new byte[size];
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for (int i = 0; i < size; ++i) {
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src[i] = (byte) i;
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}
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return src;
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}
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// Used in ApfFilter to find an IP address from a byte array
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@Test
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public void testArrays() {
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final int size = 128;
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final byte[] src = makeTrivialArray(size);
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// Test copy
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final int copySize = 16;
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final int offset = 24;
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final byte[] expected = new byte[copySize];
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for (int i = 0; i < copySize; ++i) {
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expected[i] = (byte) (offset + i);
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}
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final byte[] copy = Arrays.copyOfRange(src, offset, offset + copySize);
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assertArrayEquals(expected, copy);
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assertArrayEquals(new byte[0], Arrays.copyOfRange(src, size, size));
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}
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// Used mainly in the Dhcp code
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@Test
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public void testCopyOf() {
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final byte[] src = makeTrivialArray(128);
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final byte[] copy = Arrays.copyOf(src, src.length);
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assertArrayEquals(src, copy);
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assertFalse(src == copy);
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assertArrayEquals(new byte[0], Arrays.copyOf(src, 0));
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final int excess = 16;
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final byte[] biggerCopy = Arrays.copyOf(src, src.length + excess);
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for (int i = src.length; i < src.length + excess; ++i) {
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assertEquals(0, biggerCopy[i]);
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}
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for (int i = src.length - 1; i >= 0; --i) {
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assertEquals(src[i], biggerCopy[i]);
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}
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}
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// Used mainly in DnsUtils but also various other places
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@Test
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public void testAsList() {
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final int size = 24;
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final Object[] src = new Object[size];
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final ArrayList<Object> expected = new ArrayList<>(size);
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for (int i = 0; i < size; ++i) {
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final Object o = new Object();
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src[i] = o;
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expected.add(o);
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}
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assertEquals(expected, Arrays.asList(src));
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}
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}
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