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Java example source code file (HostSpecifierTest.java)

This example Java source code file (HostSpecifierTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bad_domains, bad_ips, equalstester, good_domains, good_ips, hostspecifier, hostspecifiertest, illegalargumentexception, list, nullpointertester, parseexception, should, string, text, throws, util

The HostSpecifierTest.java Java example source code

/*
 * Copyright (C) 2009 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.net;

import static com.google.common.truth.Truth.assertThat;

import com.google.common.collect.ImmutableList;
import com.google.common.testing.EqualsTester;
import com.google.common.testing.NullPointerTester;

import junit.framework.TestCase;

import java.text.ParseException;
import java.util.List;

/**
 * {@link TestCase} for {@link HostSpecifier}.  This is a relatively
 * cursory test, as HostSpecifier is a thin wrapper around
 * {@link InetAddresses} and {@link InternetDomainName}; the unit tests for
 * those classes explore numerous corner cases.  The intent here is to
 * confirm that everything is wired up properly.
 *
 * @author Craig Berry
 */
public final class HostSpecifierTest extends TestCase {

  private static final List<String> GOOD_IPS = ImmutableList.of(
      "1.2.3.4", "2001:db8::1", "[2001:db8::1]");

  private static final List<String> BAD_IPS = ImmutableList.of(
      "1.2.3", "2001:db8::1::::::0", "[2001:db8::1", "[::]:80");

  private static final List<String> GOOD_DOMAINS = ImmutableList.of(
      "com", "google.com", "foo.co.uk");

  private static final List<String> BAD_DOMAINS = ImmutableList.of(
      "foo.blah", "", "[google.com]");

  public void testGoodIpAddresses() throws ParseException {
    for (String spec : GOOD_IPS) {
      assertGood(spec);
    }
  }

  public void testBadIpAddresses() {
    for (String spec : BAD_IPS) {
      assertBad(spec);
    }
  }

  public void testGoodDomains() throws ParseException {
    for (String spec : GOOD_DOMAINS) {
      assertGood(spec);
    }
  }

  public void testBadDomains() {
    for (String spec : BAD_DOMAINS) {
      assertBad(spec);
    }
  }

  public void testEquality() {
    new EqualsTester()
        .addEqualityGroup(spec("1.2.3.4"), spec("1.2.3.4"))
        .addEqualityGroup(
            spec("2001:db8::1"), spec("2001:db8::1"), spec("[2001:db8::1]"))
        .addEqualityGroup(spec("2001:db8::2"))
        .addEqualityGroup(spec("google.com"), spec("google.com"))
        .addEqualityGroup(spec("www.google.com"))
        .testEquals();
  }

  private static HostSpecifier spec(String specifier) {
    return HostSpecifier.fromValid(specifier);
  }

  public void testNulls() {
    final NullPointerTester tester = new NullPointerTester();

    tester.testAllPublicStaticMethods(HostSpecifier.class);
    tester.testAllPublicInstanceMethods(HostSpecifier.fromValid("google.com"));
  }

  private void assertGood(String spec) throws ParseException {
    HostSpecifier.fromValid(spec);  // Throws exception if not working correctly
    HostSpecifier.from(spec);
    assertTrue(HostSpecifier.isValid(spec));
  }

  private void assertBad(String spec) {
    try {
      HostSpecifier.fromValid(spec);
      fail("Should have thrown IllegalArgumentException: " + spec);
    } catch (IllegalArgumentException expected) {
      // Expected outcome
    }

    try {
      HostSpecifier.from(spec);
      fail("Should have thrown ParseException: " + spec);
    } catch (ParseException expected) {
      assertThat(expected.getCause()).isInstanceOf(IllegalArgumentException.class);
    }

    assertFalse(HostSpecifier.isValid(spec));
  }

}

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