1#region Copyright notice and license
2// Protocol Buffers - Google's data interchange format
3// Copyright 2015 Google Inc.  All rights reserved.
4// https://developers.google.com/protocol-buffers/
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met:
9//
10//     * Redistributions of source code must retain the above copyright
11// notice, this list of conditions and the following disclaimer.
12//     * Redistributions in binary form must reproduce the above
13// copyright notice, this list of conditions and the following disclaimer
14// in the documentation and/or other materials provided with the
15// distribution.
16//     * Neither the name of Google Inc. nor the names of its
17// contributors may be used to endorse or promote products derived from
18// this software without specific prior written permission.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31#endregion
32
33using NUnit.Framework;
34using System;
35
36namespace Google.Protobuf.WellKnownTypes
37{
38    public class TimestampTest
39    {
40        [Test]
41        public void FromAndToDateTime()
42        {
43            DateTime utcMin = DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc);
44            DateTime utcMax = DateTime.SpecifyKind(DateTime.MaxValue, DateTimeKind.Utc);
45            AssertRoundtrip(new Timestamp { Seconds = -62135596800 }, utcMin);
46            AssertRoundtrip(new Timestamp { Seconds = 253402300799, Nanos = 999999900 }, utcMax);
47            AssertRoundtrip(new Timestamp(), new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc));
48            AssertRoundtrip(new Timestamp { Nanos = 1000000}, new DateTime(1970, 1, 1, 0, 0, 0, 1, DateTimeKind.Utc));
49            AssertRoundtrip(new Timestamp { Seconds = -1, Nanos = 999000000 }, new DateTime(1969, 12, 31, 23, 59, 59, 999, DateTimeKind.Utc));
50            AssertRoundtrip(new Timestamp { Seconds = 3600 }, new DateTime(1970, 1, 1, 1, 0, 0, DateTimeKind.Utc));
51            AssertRoundtrip(new Timestamp { Seconds = -3600 }, new DateTime(1969, 12, 31, 23, 0, 0, DateTimeKind.Utc));
52        }
53
54        [Test]
55        public void ToDateTimeTruncation()
56        {
57            var t1 = new Timestamp { Seconds = 1, Nanos = 1000000 + Duration.NanosecondsPerTick - 1 };
58            Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 1, DateTimeKind.Utc).AddMilliseconds(1), t1.ToDateTime());
59
60            var t2 = new Timestamp { Seconds = -1, Nanos = 1000000 + Duration.NanosecondsPerTick - 1 };
61            Assert.AreEqual(new DateTime(1969, 12, 31, 23, 59, 59).AddMilliseconds(1), t2.ToDateTime());
62        }
63
64        [Test]
65        [TestCase(Timestamp.UnixSecondsAtBclMinValue - 1, Timestamp.MaxNanos)]
66        [TestCase(Timestamp.UnixSecondsAtBclMaxValue + 1, 0)]
67        [TestCase(0, -1)]
68        [TestCase(0, Timestamp.MaxNanos + 1)]
69        public void ToDateTime_OutOfRange(long seconds, int nanoseconds)
70        {
71            var value = new Timestamp { Seconds = seconds, Nanos = nanoseconds };
72            Assert.Throws<InvalidOperationException>(() => value.ToDateTime());
73        }
74
75        // 1ns larger or smaller than the above values
76        [Test]
77        [TestCase(Timestamp.UnixSecondsAtBclMinValue, 0)]
78        [TestCase(Timestamp.UnixSecondsAtBclMaxValue, Timestamp.MaxNanos)]
79        [TestCase(0, 0)]
80        [TestCase(0, Timestamp.MaxNanos)]
81        public void ToDateTime_ValidBoundaries(long seconds, int nanoseconds)
82        {
83            var value = new Timestamp { Seconds = seconds, Nanos = nanoseconds };
84            value.ToDateTime();
85        }
86
87        private static void AssertRoundtrip(Timestamp timestamp, DateTime dateTime)
88        {
89            Assert.AreEqual(timestamp, Timestamp.FromDateTime(dateTime));
90            Assert.AreEqual(dateTime, timestamp.ToDateTime());
91            Assert.AreEqual(DateTimeKind.Utc, timestamp.ToDateTime().Kind);
92        }
93
94        [Test]
95        public void Arithmetic()
96        {
97            Timestamp t1 = new Timestamp { Seconds = 10000, Nanos = 5000 };
98            Timestamp t2 = new Timestamp { Seconds = 8000, Nanos = 10000 };
99            Duration difference = new Duration { Seconds = 1999, Nanos = Duration.NanosecondsPerSecond - 5000 };
100            Assert.AreEqual(difference, t1 - t2);
101            Assert.AreEqual(-difference, t2 - t1);
102
103            Assert.AreEqual(t1, t2 + difference);
104            Assert.AreEqual(t2, t1 - difference);
105        }
106
107        [Test]
108        public void ToString_NonNormalized()
109        {
110            // Just a single example should be sufficient...
111            var duration = new Timestamp { Seconds = 1, Nanos = -1 };
112            Assert.AreEqual("{ \"@warning\": \"Invalid Timestamp\", \"seconds\": \"1\", \"nanos\": -1 }", duration.ToString());
113        }
114    }
115}
116