@Test
public void testInvoke01() throws Throwable {

    // テスト準備
    MethodInvocation mockMethodInvocation = mock(MethodInvocation.class);
    when(mockMethodInvocation.proceed()).thenReturn(null);
    // テスト実行
    // 検証
    assertNull(adminConnectionRetryInterceptor.invoke(
            mockMethodInvocation));
}