### Question:
Installer { public static void premain(String arguments, Instrumentation instrumentation) { Installer.instrumentation = instrumentation; } private  Installer(); static Instrumentation getInstrumentation(); static void premain(String arguments, Instrumentation instrumentation); @SuppressWarnings("unused") static void agentmain(String arguments, Instrumentation instrumentation);  }### Answer:
@Test public void testPreMain() throws Exception { Installer.premain(FOO, instrumentation); assertThat(ByteBuddyAgent.getInstrumentation(), is(instrumentation)); }