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 *    * Redistributions of source code must retain the above copyright
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 * in the documentation and/or other materials provided with the
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package com.google.auth.oauth2;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

import com.google.api.client.util.Clock;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for CloudShellCredentials */
@RunWith(JUnit4.class)
public class CloudShellCredentialsTest extends BaseSerializationTest {

  @Test
  public void refreshAccessToken() throws IOException {
    final ServerSocket authSocket = new ServerSocket(0);
    try {
      Runnable serverTask =
          new Runnable() {
            @Override
            public void run() {
              try {
                Socket clientSocket = authSocket.accept();
                BufferedReader input =
                    new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
                String lines = input.readLine();
                lines += '\n' + input.readLine();
                assertEquals(lines, CloudShellCredentials.GET_AUTH_TOKEN_REQUEST);

                PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
                out.println("32\n[\"email\", \"project-id\", \"token\"]");
              } catch (Exception reThrown) {
                throw new RuntimeException(reThrown);
              }
            }
          };
      Thread serverThread = new Thread(serverTask);
      serverThread.start();

      GoogleCredentials creds =
          CloudShellCredentials.newBuilder().setAuthPort(authSocket.getLocalPort()).build();
      assertEquals("token", creds.refreshAccessToken().getTokenValue());
    } finally {
      authSocket.close();
    }
  }

  @Test
  public void equals_true() throws IOException {
    GoogleCredentials credentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    GoogleCredentials otherCredentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    assertTrue(credentials.equals(otherCredentials));
    assertTrue(otherCredentials.equals(credentials));
  }

  @Test
  public void equals_false_authPort() throws IOException {
    GoogleCredentials credentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    GoogleCredentials otherCredentials = CloudShellCredentials.newBuilder().setAuthPort(43).build();
    assertFalse(credentials.equals(otherCredentials));
    assertFalse(otherCredentials.equals(credentials));
  }

  @Test
  public void toString_containsFields() throws IOException {
    String expectedToString = String.format("CloudShellCredentials{authPort=%d}", 42);
    GoogleCredentials credentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    assertEquals(expectedToString, credentials.toString());
  }

  @Test
  public void hashCode_equals() throws IOException {
    GoogleCredentials credentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    GoogleCredentials otherCredentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    assertEquals(credentials.hashCode(), otherCredentials.hashCode());
  }

  @Test
  public void serialize() throws IOException, ClassNotFoundException {
    GoogleCredentials credentials = CloudShellCredentials.newBuilder().setAuthPort(42).build();
    GoogleCredentials deserializedCredentials = serializeAndDeserialize(credentials);
    assertEquals(credentials, deserializedCredentials);
    assertEquals(credentials.hashCode(), deserializedCredentials.hashCode());
    assertEquals(credentials.toString(), deserializedCredentials.toString());
    assertSame(deserializedCredentials.clock, Clock.SYSTEM);
  }

  @Test
  public void toBuilder() {
    CloudShellCredentials credentials =
        CloudShellCredentials.newBuilder()
            .setAuthPort(42)
            .setQuotaProjectId("quota-project")
            .build();

    assertEquals(42, credentials.getAuthPort());
    assertEquals("quota-project", credentials.getQuotaProjectId());

    CloudShellCredentials secondCredentials = credentials.toBuilder().build();

    assertEquals(credentials, secondCredentials);
  }
}