// Copyright 2025 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.mosapi.module;

import static com.google.common.truth.Truth.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import jakarta.servlet.http.HttpServletRequest;
import java.util.Optional;
import org.junit.jupiter.api.Test;

/** Unit tests for {@link MosApiRequestModule}. */
public class MosApiRequestModuleTest {

  @Test
  void testProvideTld_paramPresent() {
    HttpServletRequest req = mock(HttpServletRequest.class);
    when(req.getParameter("tld")).thenReturn("example.tld");

    Optional<String> result = MosApiRequestModule.provideTld(req);

    assertThat(result).hasValue("example.tld");
  }

  @Test
  void testProvideTld_paramMissing() {
    HttpServletRequest req = mock(HttpServletRequest.class);
    when(req.getParameter("tld")).thenReturn(null);

    Optional<String> result = MosApiRequestModule.provideTld(req);

    assertThat(result).isEmpty();
  }

  @Test
  void testProvideTld_paramEmptyString() {
    HttpServletRequest req = mock(HttpServletRequest.class);
    when(req.getParameter("tld")).thenReturn("");

    Optional<String> result = MosApiRequestModule.provideTld(req);

    assertThat(result).isEmpty();
  }
}
