code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC licenses this file
  // to you 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 org.openqa.selenium.logging;
  
  import static java.util.Collections.singleton;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import com.google.common.collect.ImmutableMap;
  import java.util.List;
  import java.util.logging.Level;
  import org.junit.jupiter.api.Test;
  import org.openqa.selenium.remote.DriverCommand;
  import org.openqa.selenium.remote.ExecuteMethod;
  import org.openqa.selenium.remote.RemoteLogs;
  
  class PerformanceLoggingMockTest {
  
    @Test
    void testMergesRemoteLogs() {
      final ExecuteMethod executeMethod = mock(ExecuteMethod.class);
  
      when(executeMethod.execute(
              DriverCommand.GET_LOG, ImmutableMap.of(RemoteLogs.TYPE_KEY, LogType.PROFILER)))
          .thenReturn(
              List.of(
                  ImmutableMap.of(
                      "level", Level.INFO.getName(), "timestamp", 1L, "message", "second")));
  
      LocalLogs localLogs = LocalLogs.getStoringLoggerInstance(singleton(LogType.PROFILER));
      RemoteLogs logs = new RemoteLogs(executeMethod, localLogs);
      localLogs.addEntry(LogType.PROFILER, new LogEntry(Level.INFO, 0, "first"));
      localLogs.addEntry(LogType.PROFILER, new LogEntry(Level.INFO, 2, "third"));
  
      List<LogEntry> entries = logs.get(LogType.PROFILER).getAll();
      assertThat(entries).hasSize(3);
      for (int i = 0; i < entries.size(); ++i) {
        assertThat(entries.get(i).getTimestamp()).isEqualTo(i);
      }
    }
  }
  