#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2019 The ChromiumOS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Tests for time_line.py."""

from __future__ import print_function


__author__ = "yunlian@google.com (Yunlian Jiang)"

import time
import unittest

from cros_utils import timeline


class TimeLineTest(unittest.TestCase):
    """Tests for the Timeline class."""

    def testRecord(self):
        tl = timeline.Timeline()
        tl.Record("A")
        t = time.time()
        t1 = tl.events[0].timestamp
        self.assertEqual(int(t1 - t), 0)
        self.assertRaises(AssertionError, tl.Record, "A")

    def testGetEvents(self):
        tl = timeline.Timeline()
        tl.Record("A")
        e = tl.GetEvents()
        self.assertEqual(e, ["A"])
        tl.Record("B")
        e = tl.GetEvents()
        self.assertEqual(e, ["A", "B"])

    def testGetEventTime(self):
        tl = timeline.Timeline()
        tl.Record("A")
        t = time.time()
        t1 = tl.GetEventTime("A")
        self.assertEqual(int(t1 - t), 0)
        self.assertRaises(IndexError, tl.GetEventTime, "B")

    def testGetLastEventTime(self):
        tl = timeline.Timeline()
        self.assertRaises(IndexError, tl.GetLastEventTime)
        tl.Record("A")
        t = time.time()
        t1 = tl.GetLastEventTime()
        self.assertEqual(int(t1 - t), 0)
        time.sleep(2)
        tl.Record("B")
        t = time.time()
        t1 = tl.GetLastEventTime()
        self.assertEqual(int(t1 - t), 0)


if __name__ == "__main__":
    unittest.main()