mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2024-12-23 06:42:23 +00:00
74 lines
2.3 KiB
Java
74 lines
2.3 KiB
Java
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2023 ZeroTier, Inc. https://www.zerotier.com/
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*/
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package com.zerotier.sdk.util;
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import static com.google.common.truth.Truth.assertThat;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.JUnit4;
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@RunWith(JUnit4.class)
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public class StringUtilsTest {
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public StringUtilsTest() {
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}
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public String oldMacDisplay(long mac) {
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String macStr = Long.toHexString(mac);
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if (macStr.length() > 12) {
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throw new RuntimeException();
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}
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while (macStr.length() < 12) {
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//noinspection StringConcatenationInLoop
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macStr = "0" + macStr;
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}
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//noinspection StringBufferReplaceableByString
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StringBuilder displayMac = new StringBuilder();
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displayMac.append(macStr.charAt(0));
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displayMac.append(macStr.charAt(1));
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displayMac.append(':');
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displayMac.append(macStr.charAt(2));
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displayMac.append(macStr.charAt(3));
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displayMac.append(':');
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displayMac.append(macStr.charAt(4));
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displayMac.append(macStr.charAt(5));
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displayMac.append(':');
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displayMac.append(macStr.charAt(6));
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displayMac.append(macStr.charAt(7));
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displayMac.append(':');
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displayMac.append(macStr.charAt(8));
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displayMac.append(macStr.charAt(9));
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displayMac.append(':');
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displayMac.append(macStr.charAt(10));
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displayMac.append(macStr.charAt(11));
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return displayMac.toString();
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}
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@Test
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public void testMacDisplay() {
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long mac1 = 1234567891;
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assertThat(StringUtils.macAddressToString(mac1)).isEqualTo(oldMacDisplay(mac1));
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long mac2 = 999999999;
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assertThat(StringUtils.macAddressToString(mac2)).isEqualTo(oldMacDisplay(mac2));
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long mac3 = 0x7fffffffffffL;
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assertThat(StringUtils.macAddressToString(mac3)).isEqualTo(oldMacDisplay(mac3));
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assertThat(StringUtils.macAddressToString(mac3)).isEqualTo("7f:ff:ff:ff:ff:ff");
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long mac4 = 0x7fafcf3f8fffL;
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assertThat(StringUtils.macAddressToString(mac4)).isEqualTo(oldMacDisplay(mac4));
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assertThat(StringUtils.macAddressToString(mac4)).isEqualTo("7f:af:cf:3f:8f:ff");
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}
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}
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