// Copyright 2017 The Nomulus Authors. All Rights Reserved.
//
// 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 google.registry.flows.host;

import static com.google.common.truth.Truth.assertThat;
import static google.registry.flows.host.HostFlowUtils.validateHostName;

import com.google.common.base.Strings;
import google.registry.flows.host.HostFlowUtils.HostNameNotLowerCaseException;
import google.registry.flows.host.HostFlowUtils.HostNameNotNormalizedException;
import google.registry.flows.host.HostFlowUtils.HostNameNotPunyCodedException;
import google.registry.flows.host.HostFlowUtils.HostNameTooLongException;
import google.registry.flows.host.HostFlowUtils.HostNameTooShallowException;
import google.registry.flows.host.HostFlowUtils.InvalidHostNameException;
import google.registry.testing.AppEngineRule;
import google.registry.testing.ExceptionRule;
import org.junit.Ignore;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for {@link HostFlowUtils}. */
@RunWith(JUnit4.class)
public class HostFlowUtilsTest {

  @Rule public final ExceptionRule thrown = new ExceptionRule();

  @Rule public final AppEngineRule appEngine = AppEngineRule.builder().withDatastore().build();

  @Test
  public void test_validExternalHostName_validates() throws Exception {
    assertThat(validateHostName("host.example.com").toString()).isEqualTo("host.example.com");
  }

  @Test
  @Ignore
  // TODO(b/63128999): Fix handling of public suffix lists so that hostnames that aren't on
  // effective TLDs validate.
  public void test_validExternalHostNameOnPublicSuffixList_validates() throws Exception {
    assertThat(validateHostName("host.blogspot.com").toString()).isEqualTo("host.blogspot.com");
  }


  @Test
  public void test_validateHostName_hostNameTooLong() throws Exception {
    thrown.expect(HostNameTooLongException.class);
    validateHostName(Strings.repeat("na", 200) + ".wat.man");
  }

  @Test
  public void test_validateHostName_hostNameNotLowerCase() throws Exception {
    thrown.expect(HostNameNotLowerCaseException.class);
    validateHostName("NA.CAPS.TLD");
  }

  @Test
  public void test_validateHostName_hostNameNotPunyCoded() throws Exception {
    thrown.expect(HostNameNotPunyCodedException.class);
    validateHostName("motörhead.death.metal");
  }

  @Test
  public void test_validateHostName_hostNameNotNormalized() throws Exception {
    thrown.expect(HostNameNotNormalizedException.class);
    validateHostName("root.node.yeah.");
  }

  @Test
  public void test_validateHostName_hostNameHasLeadingHyphen() throws Exception {
    thrown.expect(InvalidHostNameException.class);
    validateHostName("-giga.mega.tld");
  }

  @Test
  public void test_validateHostName_hostNameTooShallow() throws Exception {
    thrown.expect(HostNameTooShallowException.class);
    validateHostName("domain.tld");
  }
}