/*
 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the Classpath exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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 *
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package org.openjdk.btrace.instr;

import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/** @author jbachorik */
public class MethodCounterTest {

  public MethodCounterTest() {}

  @BeforeAll
  public static void setUpClass() {}

  @AfterAll
  public static void tearDownClass() {}

  @BeforeEach
  public void setUp() {}

  @AfterEach
  public void tearDown() {}

  /** Test of hit method, of class MethodCounter. */
  @Test
  public void testHit() {
    System.out.println("hit");
    final int iterations = 3000000;
    final int mean = 20;

    int methodId = 0;

    MethodTracker.registerCounter(methodId, mean);

    int hits = 0;

    for (int i = 0; i < iterations; i++) {
      hits += MethodTracker.hit(methodId) ? 1 : 0;
    }
    long b = System.nanoTime();

    System.err.println("hits = " + hits);

    assertTrue(Math.abs(mean - (iterations / hits)) < (mean / 10));
  }
}
