final File tempFile = systemHelper.createTempFile("test", ".tmp");
        assertNotNull(tempFile);
        assertTrue(tempFile.exists());
        assertTrue(tempFile.canRead());
        assertTrue(tempFile.canWrite());
        tempFile.delete();
    }

    public void test_calibrateCpuLoad_withTimeout() {
        systemHelper.setSystemCpuCheckInterval(100L);

import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.Sink
import okio.Timeout
import okio.buffer

/**
 * A scriptable web server. Callers supply canned responses and the server replays them upon request
 * in sequence.
 */
public class MockWebServer : Closeable {
  private val taskRunnerBackend =
    TaskRunner.RealBackend(