import org.apache.hadoop.mapred.gridmix.emulators.resourceusage.CumulativeCpuUsageEmulatorPlugin; //导入依赖的package包/类
private static void testEmulationAccuracy(Configuration conf, 
                      FakeCpuUsageEmulatorCore fakeCore,
                      ResourceCalculatorPlugin monitor,
                      ResourceUsageMetrics metrics,
                      CumulativeCpuUsageEmulatorPlugin cpuPlugin,
                      long expectedTotalCpuUsage, long expectedTotalNumCalls) 
throws Exception {
  FakeProgressive fakeProgress = new FakeProgressive();
  fakeCore.reset();
  cpuPlugin.initialize(conf, metrics, monitor, fakeProgress);
  int numLoops = 0;
  while (fakeProgress.getProgress() < 1) {
    ++numLoops;
    float progress = (float)numLoops / 100;
    fakeProgress.setProgress(progress);
    cpuPlugin.emulate();
  }
  
  // test if the resource plugin shows the expected invocations
  assertEquals("Cumulative cpu usage emulator plugin failed (num calls)!", 
               expectedTotalNumCalls, fakeCore.getNumCalls(), 0L);
  // test if the resource plugin shows the expected usage
  assertEquals("Cumulative cpu usage emulator plugin failed (total usage)!", 
               expectedTotalCpuUsage, fakeCore.getCpuUsage(), 0L);
}
 

import org.apache.hadoop.mapred.gridmix.emulators.resourceusage.CumulativeCpuUsageEmulatorPlugin; //导入依赖的package包/类
private static void testEmulationBoundary(float progress, 
    FakeCpuUsageEmulatorCore fakeCore, FakeProgressive fakeProgress, 
    CumulativeCpuUsageEmulatorPlugin cpuPlugin, long expectedTotalCpuUsage, 
    long expectedTotalNumCalls, String info) throws Exception {
  fakeProgress.setProgress(progress);
  cpuPlugin.emulate();
  
  assertEquals("Emulation interval test for cpu usage failed " + info + "!", 
               expectedTotalCpuUsage, fakeCore.getCpuUsage(), 0L);
  assertEquals("Emulation interval test for num calls failed " + info + "!", 
               expectedTotalNumCalls, fakeCore.getNumCalls(), 0L);
}