/*
 * Copyright 2023 The Error Prone 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.errorprone.bugpatterns;

import com.google.errorprone.BugCheckerRefactoringTestHelper;
import com.google.errorprone.CompilationTestHelper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

@RunWith(JUnit4.class)
public class AddressSelectionTest {

  private final CompilationTestHelper compilationHelper =
      CompilationTestHelper.newInstance(AddressSelection.class, getClass());

  private final BugCheckerRefactoringTestHelper refactoringTestHelper =
      BugCheckerRefactoringTestHelper.newInstance(AddressSelection.class, getClass());

  @Test
  public void positive() {
    compilationHelper
        .addSourceLines(
            "Test.java",
            """
            import java.net.InetAddress;
            import java.net.InetSocketAddress;
            import java.net.Socket;

            class Test {
              void f() throws Exception {
                // BUG: Diagnostic contains:
                InetAddress.getByName("example.com");
                // BUG: Diagnostic contains:
                new Socket("example.com", 80);
                // BUG: Diagnostic contains:
                new InetSocketAddress("example.com", 80);
              }
            }
            """)
        .doTest();
  }

  @Test
  public void negative() throws Exception {
    compilationHelper
        .addSourceLines(
            "Test.java",
            """
            import java.net.InetAddress;
            import java.net.InetSocketAddress;
            import java.net.Socket;

            class Test {
              void f() throws Exception {
                new Socket(InetAddress.getLoopbackAddress(), 80);
                InetAddress.getAllByName("example.com");
                new InetSocketAddress(InetAddress.getLoopbackAddress(), 80);
              }
            }
            """)
        .doTest();
  }

  @Test
  public void negativeLocalhost() throws Exception {
    compilationHelper
        .addSourceLines(
            "Test.java",
            """
            import java.net.InetAddress;
            import java.net.InetSocketAddress;
            import java.net.Socket;

            class Test {
              void f() throws Exception {
                new Socket("localhost", 80);
                InetAddress.getByName("localhost");
                new InetSocketAddress("localhost", 80);
              }
            }
            """)
        .doTest();
  }

  @Test
  public void negativeNumeric() throws Exception {
    compilationHelper
        .addSourceLines(
            "Test.java",
            """
            import java.net.InetAddress;
            import java.net.InetSocketAddress;
            import java.net.Socket;

            class Test {
              void f() throws Exception {
                new Socket("1.2.3.4", 80);
                InetAddress.getByName("2001:db8:85a3:8d3:1319:8a2e:370:7348");
                new InetSocketAddress("::ffff:192.0.2.128", 80);
              }
            }
            """)
        .doTest();
  }

  @Test
  public void refactor() throws Exception {
    refactoringTestHelper
        .addInputLines(
            "Test.java",
            """
            import java.net.InetAddress;
            import java.net.InetSocketAddress;
            import java.net.Socket;

            class Test {
              void f() throws Exception {
                new Socket("127.0.0.1", 80);
                InetAddress.getByName("127.0.0.1");
                new InetSocketAddress("127.0.0.1", 80);
                new Socket("::1", 80);
                InetAddress.getByName("::1");
                new InetSocketAddress("::1", 80);
              }
            }
            """)
        .addOutputLines(
            "Test.java",
            """
            import java.net.InetAddress;
            import java.net.InetSocketAddress;
            import java.net.Socket;

            class Test {
              void f() throws Exception {
                new Socket(InetAddress.getLoopbackAddress(), 80);
                InetAddress.getLoopbackAddress();
                new InetSocketAddress(InetAddress.getLoopbackAddress(), 80);
                new Socket(InetAddress.getLoopbackAddress(), 80);
                InetAddress.getLoopbackAddress();
                new InetSocketAddress(InetAddress.getLoopbackAddress(), 80);
              }
            }
            """)
        .doTest();
  }
}
