/*
 * Copyright ConsenSys AG.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.ethereum.api.jsonrpc.internal.methods;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;

import org.hyperledger.besu.ethereum.api.jsonrpc.internal.JsonRpcRequest;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.JsonRpcRequestContext;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.filter.FilterManager;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcResponse;
import org.hyperledger.besu.ethereum.api.jsonrpc.internal.response.JsonRpcSuccessResponse;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;

@RunWith(MockitoJUnitRunner.class)
public class EthNewBlockFilterTest {

  @Mock private FilterManager filterManager;
  private EthNewBlockFilter method;
  private final String ETH_METHOD = "eth_newBlockFilter";

  @Before
  public void setUp() {
    method = new EthNewBlockFilter(filterManager);
  }

  @Test
  public void getMethodReturnsExpectedName() {
    assertThat(method.getName()).isEqualTo(ETH_METHOD);
  }

  @Test
  public void getResponse() {
    when(filterManager.installBlockFilter()).thenReturn("0x0");
    final JsonRpcRequestContext request =
        new JsonRpcRequestContext(new JsonRpcRequest("2.0", ETH_METHOD, new String[] {}));
    final JsonRpcResponse expectedResponse =
        new JsonRpcSuccessResponse(request.getRequest().getId(), "0x0");
    final JsonRpcResponse actualResponse = method.response(request);
    assertThat(actualResponse).isEqualToComparingFieldByField(expectedResponse);
    verify(filterManager).installBlockFilter();
    verifyNoMoreInteractions(filterManager);
  }
}
