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DateTimeTests.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Runtime.Serialization;
using System.Runtime.InteropServices;
using Xunit;
namespace System.Tests
{
public class DateTimeTests
{
[Fact]
public static void MaxValue()
{
VerifyDateTime(DateTime.MaxValue, 9999, 12, 31, 23, 59, 59, 999, DateTimeKind.Unspecified);
}
[Fact]
public static void MinValue()
{
VerifyDateTime(DateTime.MinValue, 1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified);
}
[Fact]
public static void Ctor_Long()
{
VerifyDateTime(new DateTime(999999999999999999), 3169, 11, 16, 9, 46, 39, 999, DateTimeKind.Unspecified);
}
[Fact]
public static void Ctor_Long_DateTimeKind()
{
VerifyDateTime(new DateTime(999999999999999999, DateTimeKind.Utc), 3169, 11, 16, 9, 46, 39, 999, DateTimeKind.Utc);
}
public static IEnumerable<object[]> Ctor_InvalidTicks_TestData()
{
yield return new object[] { DateTime.MinValue.Ticks - 1 };
yield return new object[] { DateTime.MaxValue.Ticks + 1 };
}
[Theory]
[MemberData(nameof(Ctor_InvalidTicks_TestData))]
public void Ctor_InvalidTicks_ThrowsArgumentOutOfRangeException(long ticks)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("ticks", () => new DateTime(ticks));
AssertExtensions.Throws<ArgumentOutOfRangeException>("ticks", () => new DateTime(ticks, DateTimeKind.Utc));
}
[Fact]
public void Ctor_Int_Int_Int()
{
var dateTime = new DateTime(2012, 6, 11);
VerifyDateTime(dateTime, 2012, 6, 11, 0, 0, 0, 0, DateTimeKind.Unspecified);
}
[Fact]
public void Ctor_Int_Int_Int_Calendar()
{
var dateTime = new DateTime(2012, 6, 11, new GregorianCalendar());
VerifyDateTime(dateTime, 2012, 6, 11, 0, 0, 0, 0, DateTimeKind.Unspecified);
}
[Fact]
public void Ctor_Int_Int_Int_Int_Int_Int()
{
var dateTime = new DateTime(2012, 12, 31, 13, 50, 10);
VerifyDateTime(dateTime, 2012, 12, 31, 13, 50, 10, 0, DateTimeKind.Unspecified);
}
[Fact]
public void Ctor_Int_Int_Int_Int_Int_Int_DateTimeKind()
{
var dateTime = new DateTime(1986, 8, 15, 10, 20, 5, DateTimeKind.Local);
VerifyDateTime(dateTime, 1986, 8, 15, 10, 20, 5, 0, DateTimeKind.Local);
}
[Fact]
public void Ctor_Int_Int_Int_Int_Int_Int_Calendar()
{
var dateTime = new DateTime(2012, 12, 31, 13, 50, 10, new GregorianCalendar());
VerifyDateTime(dateTime, 2012, 12, 31, 13, 50, 10, 0, DateTimeKind.Unspecified);
}
public static IEnumerable<object[]> Ctor_Int_Int_Int_Int_Int_Int_Int_Int_TestData()
{
yield return new object[] { 1986, 8, 15, 10, 20, 5, 600 };
yield return new object[] { 1986, 2, 28, 10, 20, 5, 600 };
yield return new object[] { 1986, 12, 31, 10, 20, 5, 600 };
yield return new object[] { 2000, 2, 28, 10, 20, 5, 600 };
yield return new object[] { 2000, 2, 29, 10, 20, 5, 600 };
yield return new object[] { 2000, 12, 31, 10, 20, 5, 600 };
yield return new object[] { 1900, 2, 28, 10, 20, 5, 600 };
yield return new object[] { 1900, 12, 31, 10, 20, 5, 600 };
}
[Theory]
[MemberData(nameof(Ctor_Int_Int_Int_Int_Int_Int_Int_Int_TestData))]
public void Ctor_Int_Int_Int_Int_Int_Int_Int(int year, int month, int day, int hour, int minute, int second, int millisecond)
{
var dateTime = new DateTime(year, month, day, hour, minute, second, millisecond);
VerifyDateTime(dateTime, year, month, day, hour, minute, second, millisecond, DateTimeKind.Unspecified);
}
[Theory]
[MemberData(nameof(Ctor_Int_Int_Int_Int_Int_Int_Int_Int_TestData))]
public void Ctor_Int_Int_Int_Int_Int_Int_Int_Calendar(int year, int month, int day, int hour, int minute, int second, int millisecond)
{
var dateTime = new DateTime(year, month, day, hour, minute, second, millisecond, new GregorianCalendar());
VerifyDateTime(dateTime, year, month, day, hour, minute, second, millisecond, DateTimeKind.Unspecified);
}
[Theory]
[MemberData(nameof(Ctor_Int_Int_Int_Int_Int_Int_Int_Int_TestData))]
public void Ctor_Int_Int_Int_Int_Int_Int_Int_Int_DateTimeKind(int year, int month, int day, int hour, int minute, int second, int millisecond)
{
var dateTime = new DateTime(year, month, day, hour, minute, second, millisecond, DateTimeKind.Local);
VerifyDateTime(dateTime, year, month, day, hour, minute, second, millisecond, DateTimeKind.Local);
}
[Theory]
[MemberData(nameof(Ctor_Int_Int_Int_Int_Int_Int_Int_Int_TestData))]
public void Ctor_Int_Int_Int_Int_Int_Int_Int_Int_Calendar_DateTimeKind(int year, int month, int day, int hour, int minute, int second, int millisecond)
{
var dateTime = new DateTime(year, month, day, hour, minute, second, millisecond, new GregorianCalendar(), DateTimeKind.Local);
VerifyDateTime(dateTime, year, month, day, hour, minute, second, millisecond, DateTimeKind.Local);
}
[Theory]
[InlineData(0)]
[InlineData(10000)]
public void Ctor_InvalidYear_ThrowsArgumentOutOfRangeException(int year)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(year, 1, 1, 1, 1, 1, 1, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(0)]
[InlineData(13)]
public void Ctor_InvalidMonth_ThrowsArgumentOutOfRangeException(int month)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, month, 1, 1, 1, 1, 1, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(0)]
[InlineData(32)]
public void Ctor_InvalidDay_ThrowsArgumentOutOfRangeException(int day)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, day, 1, 1, 1, 1, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(-1)]
[InlineData(24)]
public void Ctor_InvalidHour_ThrowsArgumentOutOfRangeException(int hour)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, hour, 1, 1, 1, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(-1)]
[InlineData(60)]
public void Ctor_InvalidMinute_ThrowsArgumentOutOfRangeException(int minute)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1, 1, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, minute, 1, 1, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(-1)]
[InlineData(60)]
public void Ctor_InvalidSecond_ThrowsArgumentOutOfRangeException(int second)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, 1, second));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, 1, second, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, 1, second, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, 1, second, 1));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, 1, second, 1, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => new DateTime(1, 1, 1, 1, 1, second, 1, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(-1)]
[InlineData(1000)]
public void Ctor_InvalidMillisecond_ThrowsArgumentOutOfRangeException(int millisecond)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("millisecond", () => new DateTime(1, 1, 1, 1, 1, 1, millisecond));
AssertExtensions.Throws<ArgumentOutOfRangeException>("millisecond", () => new DateTime(1, 1, 1, 1, 1, 1, millisecond, DateTimeKind.Utc));
AssertExtensions.Throws<ArgumentOutOfRangeException>("millisecond", () => new DateTime(1, 1, 1, 1, 1, 1, millisecond, new GregorianCalendar()));
AssertExtensions.Throws<ArgumentOutOfRangeException>("millisecond", () => new DateTime(1, 1, 1, 1, 1, 1, millisecond, new GregorianCalendar(), DateTimeKind.Utc));
}
[Theory]
[InlineData(DateTimeKind.Unspecified - 1)]
[InlineData(DateTimeKind.Local + 1)]
public void Ctor_InvalidDateTimeKind_ThrowsArgumentException(DateTimeKind kind)
{
AssertExtensions.Throws<ArgumentException>("kind", () => new DateTime(0, kind));
AssertExtensions.Throws<ArgumentException>("kind", () => new DateTime(1, 1, 1, 1, 1, 1, kind));
AssertExtensions.Throws<ArgumentException>("kind", () => new DateTime(1, 1, 1, 1, 1, 1, 1, kind));
AssertExtensions.Throws<ArgumentException>("kind", () => new DateTime(1, 1, 1, 1, 1, 1, 1, new GregorianCalendar(), kind));
}
[Fact]
public void Ctor_NullCalendar_ThrowsArgumentNullException()
{
AssertExtensions.Throws<ArgumentNullException>("calendar", () => new DateTime(1, 1, 1, null));
AssertExtensions.Throws<ArgumentNullException>("calendar", () => new DateTime(1, 1, 1, 1, 1, 1, null));
AssertExtensions.Throws<ArgumentNullException>("calendar", () => new DateTime(1, 1, 1, 1, 1, 1, 1, null));
AssertExtensions.Throws<ArgumentNullException>("calendar", () => new DateTime(1, 1, 1, 1, 1, 1, 1, null, DateTimeKind.Local));
}
[Theory]
[InlineData(2004, 1, 31)]
[InlineData(2004, 2, 29)]
[InlineData(2004, 3, 31)]
[InlineData(2004, 4, 30)]
[InlineData(2004, 5, 31)]
[InlineData(2004, 6, 30)]
[InlineData(2004, 7, 31)]
[InlineData(2004, 8, 31)]
[InlineData(2004, 9, 30)]
[InlineData(2004, 10, 31)]
[InlineData(2004, 11, 30)]
[InlineData(2004, 12, 31)]
[InlineData(2005, 1, 31)]
[InlineData(2005, 2, 28)]
[InlineData(2005, 3, 31)]
[InlineData(2005, 4, 30)]
[InlineData(2005, 5, 31)]
[InlineData(2005, 6, 30)]
[InlineData(2005, 7, 31)]
[InlineData(2005, 8, 31)]
[InlineData(2005, 9, 30)]
[InlineData(2005, 10, 31)]
[InlineData(2005, 11, 30)]
[InlineData(2005, 12, 31)]
public void DaysInMonth_Invoke_ReturnsExpected(int year, int month, int expected)
{
Assert.Equal(expected, DateTime.DaysInMonth(year, month));
}
[Theory]
[InlineData(0)]
[InlineData(13)]
public void DaysInMonth_InvalidMonth_ThrowsArgumentOutOfRangeException(int month)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("month", () => DateTime.DaysInMonth(1, month));
}
[Theory]
[InlineData(0)]
[InlineData(10000)]
public void DaysInMonth_InvalidYear_ThrowsArgumentOutOfRangeException(int year)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("year", () => DateTime.DaysInMonth(year, 1));
}
[Theory]
[InlineData(2004, true)]
[InlineData(2000, true)]
[InlineData(1900, false)]
[InlineData(2005, false)]
public void IsLeapYear_Invoke_ReturnsExpected(int year, bool expected)
{
Assert.Equal(expected, DateTime.IsLeapYear(year));
}
[Theory]
[InlineData(0)]
[InlineData(10000)]
public void IsLeapYear_InvalidYear_ThrowsArgumentOutOfRangeException(int year)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("year", () => DateTime.IsLeapYear(year));
}
public static IEnumerable<object[]> IsDaylightSavingTime_TestData()
{
yield return new object[] { new DateTime(2018, 11, 24, 0, 0, 0, DateTimeKind.Utc), false };
yield return new object[] { DateTime.MinValue, false };
yield return new object[] { DateTime.MaxValue, false };
}
[Theory]
[MemberData(nameof(IsDaylightSavingTime_TestData))]
public void IsDaylightSavingTime_Invoke_ReturnsExpected(DateTime date, bool expected)
{
Assert.Equal(expected, date.IsDaylightSavingTime());
}
public static IEnumerable<object[]> Add_TimeSpan_TestData()
{
yield return new object[] { new DateTime(1000), new TimeSpan(10), new DateTime(1010) };
yield return new object[] { new DateTime(1000), TimeSpan.Zero, new DateTime(1000) };
yield return new object[] { new DateTime(1000), new TimeSpan(-10), new DateTime(990) };
}
[Theory]
[MemberData(nameof(Add_TimeSpan_TestData))]
public void Add_TimeSpan_ReturnsExpected(DateTime dateTime, TimeSpan timeSpan, DateTime expected)
{
Assert.Equal(expected, dateTime.Add(timeSpan));
Assert.Equal(expected, dateTime + timeSpan);
}
public static IEnumerable<object[]> Add_TimeSpanOutOfRange_TestData()
{
yield return new object[] { DateTime.Now, TimeSpan.MaxValue };
yield return new object[] { DateTime.Now, TimeSpan.MinValue };
yield return new object[] { DateTime.MaxValue, new TimeSpan(1) };
yield return new object[] { DateTime.MinValue, new TimeSpan(-1) };
}
[Theory]
[MemberData(nameof(Add_TimeSpanOutOfRange_TestData))]
public void Add_TimeSpan_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, TimeSpan value)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.Add(value));
AssertExtensions.Throws<ArgumentOutOfRangeException>("t", () => date + value);
}
public static IEnumerable<object[]> AddYears_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 10, new DateTime(1996, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -10, new DateTime(1976, 8, 15, 10, 20, 5, 70) };
}
[Theory]
[MemberData(nameof(AddYears_TestData))]
public void AddYears_Invoke_ReturnsExpected(DateTime dateTime, int years, DateTime expected)
{
Assert.Equal(expected, dateTime.AddYears(years));
}
public static IEnumerable<object[]> AddYears_OutOfRange_TestData()
{
yield return new object[] { DateTime.Now, 10001 };
yield return new object[] { DateTime.Now, -10001 };
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
}
[Theory]
[MemberData(nameof(AddYears_OutOfRange_TestData))]
public static void AddYears_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, int years)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddYears(years));
}
public static IEnumerable<object[]> AddMonths_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 2, new DateTime(1986, 10, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 31, 10, 20, 5, 70), 1, new DateTime(1986, 9, 30, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 9, 30, 10, 20, 5, 70), 1, new DateTime(1986, 10, 30, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -2, new DateTime(1986, 6, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1900, 2, 28, 10, 20, 5, 70), 1, new DateTime(1900, 3, 28, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1900, 1, 31, 10, 20, 5, 70), 1, new DateTime(1900, 2, 28, 10, 20, 5, 70) };
yield return new object[] { new DateTime(2000, 1, 31, 10, 20, 5, 70), 1, new DateTime(2000, 2, 29, 10, 20, 5, 70) };
yield return new object[] { new DateTime(2000, 2, 29, 10, 20, 5, 70), 1, new DateTime(2000, 3, 29, 10, 20, 5, 70) };
yield return new object[] { new DateTime(2004, 1, 31, 10, 20, 5, 70), 1, new DateTime(2004, 2, 29, 10, 20, 5, 70) };
yield return new object[] { new DateTime(2004, 2, 29, 10, 20, 5, 70), 1, new DateTime(2004, 3, 29, 10, 20, 5, 70) };
yield return new object[] { new DateTime(2000, 12, 31), 1, new DateTime(2001, 1, 31) };
}
[Theory]
[MemberData(nameof(AddMonths_TestData))]
public void AddMonths_Invoke_ReturnsExpected(DateTime dateTime, int months, DateTime expected)
{
Assert.Equal(expected, dateTime.AddMonths(months));
}
public static IEnumerable<object[]> AddMonths_OutOfRange_TestData()
{
yield return new object[] { DateTime.Now, 120001 };
yield return new object[] { DateTime.Now, -120001 };
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
}
[Theory]
[MemberData(nameof(AddMonths_OutOfRange_TestData))]
public void AddMonths_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, int months)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("months", () => date.AddMonths(months));
}
public static IEnumerable<object[]> AddDays_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 2, new DateTime(1986, 8, 17, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 2, new DateTime(1986, 8, 17, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -2, new DateTime(1986, 8, 13, 10, 20, 5, 70) };
}
[Theory]
[MemberData(nameof(AddDays_TestData))]
public void AddDays_Invoke_ReturnsExpected(DateTime dateTime, double days, DateTime expected)
{
Assert.Equal(expected, dateTime.AddDays(days));
}
public static IEnumerable<object[]> AddDays_OutOfRange_TestData()
{
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
yield return new object[] { DateTime.Now, double.MaxValue };
yield return new object[] { DateTime.Now, double.MinValue };
}
[Theory]
[MemberData(nameof(AddDays_OutOfRange_TestData))]
public void AddDays_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, double days)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddDays(days));
}
public static IEnumerable<object[]> AddHours_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 3, new DateTime(1986, 8, 15, 13, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -3, new DateTime(1986, 8, 15, 7, 20, 5, 70) };
}
[Theory]
[MemberData(nameof(AddHours_TestData))]
public void AddHours_Invoke_RetunsExpected(DateTime dateTime, double hours, DateTime expected)
{
Assert.Equal(expected, dateTime.AddHours(hours));
}
public static IEnumerable<object[]> AddHours_OutOfRange_TestData()
{
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
yield return new object[] { DateTime.Now, double.MaxValue };
yield return new object[] { DateTime.Now, double.MinValue };
}
[Theory]
[MemberData(nameof(AddHours_OutOfRange_TestData))]
public void AddHours_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, double hours)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddHours(hours));
}
public static IEnumerable<object[]> AddMinutes_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 5, new DateTime(1986, 8, 15, 10, 25, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -5, new DateTime(1986, 8, 15, 10, 15, 5, 70) };
}
[Theory]
[MemberData(nameof(AddMinutes_TestData))]
public void AddMinutes_Invoke_ReturnsExpected(DateTime dateTime, double minutes, DateTime expected)
{
Assert.Equal(expected, dateTime.AddMinutes(minutes));
}
public static IEnumerable<object[]> AddMinutes_OutOfRange_TestData()
{
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
yield return new object[] { DateTime.Now, double.MaxValue };
yield return new object[] { DateTime.Now, double.MinValue };
}
[Theory]
[MemberData(nameof(AddMinutes_OutOfRange_TestData))]
public void AddMinutes_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, double minutes)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddMinutes(minutes));
}
public static IEnumerable<object[]> AddSeconds_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 30, new DateTime(1986, 8, 15, 10, 20, 35, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -3, new DateTime(1986, 8, 15, 10, 20, 2, 70) };
}
[Theory]
[MemberData(nameof(AddSeconds_TestData))]
public void AddSeconds_Invoke_ReturnsExpected(DateTime dateTime, double seconds, DateTime expected)
{
Assert.Equal(expected, dateTime.AddSeconds(seconds));
}
public static IEnumerable<object[]> AddSeconds_OutOfRange_TestData()
{
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
yield return new object[] { DateTime.Now, double.MaxValue };
yield return new object[] { DateTime.Now, double.MinValue };
}
[Theory]
[MemberData(nameof(AddSeconds_OutOfRange_TestData))]
public void AddSeconds_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, double seconds)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddSeconds(seconds));
}
public static IEnumerable<object[]> AddMilliseconds_TestData()
{
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 10, new DateTime(1986, 8, 15, 10, 20, 5, 80) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), 0, new DateTime(1986, 8, 15, 10, 20, 5, 70) };
yield return new object[] { new DateTime(1986, 8, 15, 10, 20, 5, 70), -10, new DateTime(1986, 8, 15, 10, 20, 5, 60) };
}
[Theory]
[MemberData(nameof(AddMilliseconds_TestData))]
public void AddMilliseconds_Invoke_ReturnsExpected(DateTime dateTime, double milliseconds, DateTime expected)
{
Assert.Equal(expected, dateTime.AddMilliseconds(milliseconds));
}
public static IEnumerable<object[]> AddMillseconds_OutOfRange_TestData()
{
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
yield return new object[] { DateTime.Now, double.MaxValue };
yield return new object[] { DateTime.Now, double.MinValue };
}
[Theory]
[MemberData(nameof(AddMillseconds_OutOfRange_TestData))]
public void AddMilliseconds_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, double milliseconds)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddMilliseconds(milliseconds));
}
public static IEnumerable<object[]> AddTicks_TestData()
{
yield return new object[] { new DateTime(1000), 10, new DateTime(1010) };
yield return new object[] { new DateTime(1000), 0, new DateTime(1000) };
yield return new object[] { new DateTime(1000), -10, new DateTime(990) };
}
[Theory]
[MemberData(nameof(AddTicks_TestData))]
public void AddTicks_Invoke_ReturnsExpected(DateTime dateTime, long ticks, DateTime expected)
{
Assert.Equal(expected, dateTime.AddTicks(ticks));
}
public static IEnumerable<object[]> AddTicks_OutOfRange_TestData()
{
yield return new object[] { DateTime.MaxValue, 1 };
yield return new object[] { DateTime.MinValue, -1 };
yield return new object[] { DateTime.Now, long.MaxValue };
yield return new object[] { DateTime.Now, long.MinValue };
}
[Theory]
[MemberData(nameof(AddTicks_OutOfRange_TestData))]
public void AddTicks_NewDateOutOfRange_ThrowsArgumentOutOfRangeException(DateTime date, long ticks)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("value", () => date.AddTicks(ticks));
}
public static IEnumerable<object[]> CompareTo_TestData()
{
yield return new object[] { new DateTime(10), new DateTime(10), 0 };
yield return new object[] { new DateTime(10), new DateTime(11), -1 };
yield return new object[] { new DateTime(10), new DateTime(9), 1 };
yield return new object[] { new DateTime(10), null, 1 };
}
[Theory]
[MemberData(nameof(CompareTo_TestData))]
public void CompareTo_Invoke_ReturnsExpected(DateTime date, object other, int expected)
{
if (other is DateTime otherDate)
{
Assert.Equal(expected, date.CompareTo(otherDate));
Assert.Equal(expected, DateTime.Compare(date, otherDate));
Assert.Equal(expected > 0, date > otherDate);
Assert.Equal(expected >= 0, date >= otherDate);
Assert.Equal(expected < 0, date < otherDate);
Assert.Equal(expected <= 0, date <= otherDate);
}
Assert.Equal(expected, date.CompareTo(other));
}
[Fact]
public void CompareTo_NotDateTime_ThrowsArgumentException()
{
AssertExtensions.Throws<ArgumentException>(null, () => DateTime.Now.CompareTo(new object()));
}
public static IEnumerable<object[]> Equals_TestData()
{
yield return new object[] { new DateTime(10), new DateTime(10), true };
yield return new object[] { new DateTime(10), new DateTime(11), false };
yield return new object[] { new DateTime(10), new DateTime(9), false };
yield return new object[] { new DateTime(10), new object(), false };
yield return new object[] { new DateTime(10), null, false };
}
[Theory]
[MemberData(nameof(Equals_TestData))]
public void Equals_Invoke_ReturnsExpected(DateTime date, object other, bool expected)
{
if (other is DateTime otherDate)
{
Assert.Equal(expected, date.Equals(otherDate));
Assert.Equal(expected, DateTime.Equals(date, otherDate));
Assert.Equal(expected, date.GetHashCode().Equals(otherDate.GetHashCode()));
Assert.Equal(expected, date == otherDate);
Assert.Equal(!expected, date != otherDate);
}
Assert.Equal(expected, date.Equals(other));
}
[Fact]
public void DayOfWeek_Get_ReturnsExpected()
{
var dateTime = new DateTime(2012, 6, 18);
Assert.Equal(DayOfWeek.Monday, dateTime.DayOfWeek);
}
[Fact]
public void DayOfYear_Get_ReturnsExpected()
{
var dateTime = new DateTime(2012, 6, 18);
Assert.Equal(170, dateTime.DayOfYear);
}
[Fact]
public void TimeOfDay_Get_ReturnsExpected()
{
var dateTime = new DateTime(2012, 6, 18, 10, 5, 1, 0);
TimeSpan ts = dateTime.TimeOfDay;
DateTime newDate = dateTime.Subtract(ts);
Assert.Equal(new DateTime(2012, 6, 18, 0, 0, 0, 0).Ticks, newDate.Ticks);
Assert.Equal(dateTime.Ticks, newDate.Add(ts).Ticks);
}
[Fact]
public void Today_Get_ReturnsExpected()
{
DateTime today = DateTime.Today;
DateTime now = DateTime.Now;
VerifyDateTime(today, now.Year, now.Month, now.Day, 0, 0, 0, 0, DateTimeKind.Local);
today = new DateTime(now.Year, now.Month, now.Day, now.Hour, now.Minute, now.Second, DateTimeKind.Utc);
Assert.Equal(DateTimeKind.Utc, today.Kind);
Assert.False(today.IsDaylightSavingTime());
}
public static IEnumerable<object[]> Subtract_TimeSpan_TestData()
{
var dateTime = new DateTime(2012, 6, 18, 10, 5, 1, 0, DateTimeKind.Utc);
yield return new object[] { dateTime, new TimeSpan(10, 5, 1), new DateTime(2012, 6, 18, 0, 0, 0, 0, DateTimeKind.Utc) };
yield return new object[] { dateTime, new TimeSpan(-10, -5, -1), new DateTime(2012, 6, 18, 20, 10, 2, 0, DateTimeKind.Utc) };
}
[Theory]
[MemberData(nameof(Subtract_TimeSpan_TestData))]
public void Subtract_TimeSpan_ReturnsExpected(DateTime dateTime, TimeSpan timeSpan, DateTime expected)
{
Assert.Equal(expected, dateTime.Subtract(timeSpan));
Assert.Equal(expected, dateTime - timeSpan);
}
public static IEnumerable<object[]> Subtract_OutOfRangeTimeSpan_TestData()
{
yield return new object[] { DateTime.Now, TimeSpan.MinValue };
yield return new object[] { DateTime.Now, TimeSpan.MaxValue };
yield return new object[] { DateTime.MaxValue, new TimeSpan(-1) };
yield return new object[] { DateTime.MinValue, new TimeSpan(1) };
}
[Theory]
[MemberData(nameof(Subtract_OutOfRangeTimeSpan_TestData))]
public static void Subtract_OutOfRangeTimeSpan_ThrowsArgumentOutOfRangeException(DateTime date, TimeSpan value)
{
Assert.Throws<ArgumentOutOfRangeException>(() => date.Subtract(value));
Assert.Throws<ArgumentOutOfRangeException>(() => date - value);
}
public static IEnumerable<object[]> Subtract_DateTime_TestData()
{
var dateTime1 = new DateTime(1996, 6, 3, 22, 15, 0, DateTimeKind.Utc);
var dateTime2 = new DateTime(1996, 12, 6, 13, 2, 0, DateTimeKind.Utc);
var dateTime3 = new DateTime(1996, 10, 12, 8, 42, 0, DateTimeKind.Utc);
yield return new object[] { dateTime2, dateTime1, new TimeSpan(185, 14, 47, 0) };
yield return new object[] { dateTime1, dateTime2, new TimeSpan(-185, -14, -47, 0) };
yield return new object[] { dateTime1, dateTime2, new TimeSpan(-185, -14, -47, 0) };
}
[Theory]
[MemberData(nameof(Subtract_DateTime_TestData))]
public void Subtract_DateTime_ReturnsExpected(DateTime dateTime1, DateTime dateTime2, TimeSpan expected)
{
Assert.Equal(expected, dateTime1.Subtract(dateTime2));
Assert.Equal(expected, dateTime1 - dateTime2);
}
public static IEnumerable<object[]> ToOADate_TestData()
{
yield return new object[] { new DateTime(1), 0 };
yield return new object[] { new DateTime((long)10000 * 1000 * 60 * 60 * 24 - 1), 1 };
yield return new object[] { new DateTime(100, 1, 1), -657434 };
yield return new object[] { new DateTime(1889, 11, 24, 23, 59, 59, 999).AddTicks(1), -3687 };
yield return new object[] { new DateTime(1889, 11, 24, 17, 57, 30, 12), -3688.74826402778 };
yield return new object[] { new DateTime(1889, 11, 24).AddTicks(1), -3688 };
yield return new object[] { new DateTime(1899, 12, 30), 0 };
yield return new object[] { new DateTime(2018, 11, 24), 43428 };
yield return new object[] { new DateTime(2018, 11, 24, 17, 57, 30, 12), 43428.74826 };
yield return new object[] { new DateTime(2018, 11, 24, 23, 59, 59, 999).AddTicks(1), 43429 };
yield return new object[] { DateTime.MinValue, 0 };
yield return new object[] { DateTime.MaxValue, 2958466 };
}
[Theory]
[MemberData(nameof(ToOADate_TestData))]
public void ToOADate_Invoke_ReturnsExpected(DateTime date, double expected)
{
Assert.Equal(expected, date.ToOADate(), 5);
}
public static IEnumerable<object[]> ToOADate_Overflow_TestData()
{
yield return new object[] { new DateTime((long)10000 * 1000 * 60 * 60 * 24) };
yield return new object[] { new DateTime(100, 1, 1).AddTicks(-1) };
}
[Theory]
[MemberData(nameof(ToOADate_Overflow_TestData))]
public void ToOADate_SmallDate_ThrowsOverflowException(DateTime date)
{
Assert.Throws<OverflowException>(() => date.ToOADate());
}
public static IEnumerable<object[]> FromOADate_TestData()
{
yield return new object[] { -1.5, new DateTime(1899, 12, 29, 12, 0, 0) };
yield return new object[] { -1, new DateTime(1899, 12, 29) };
yield return new object[] { 0, new DateTime(1899, 12, 30) };
yield return new object[] { 1, new DateTime(1899, 12, 31) };
yield return new object[] { 1.5, new DateTime(1899, 12, 31, 12, 0, 0) };
yield return new object[] { -657434.99999999, new DateTime(100, 1, 1, 23, 59, 59, 999) };
yield return new object[] { -657434.9999999999, new DateTime(99, 12, 31) };
yield return new object[] { 2958465.999999994, new DateTime(9999, 12, 31, 23, 59, 59, 999) };
}
[Theory]
[MemberData(nameof(FromOADate_TestData))]
public void FromOADate_Invoke_ReturnsExpected(double value, DateTime expected)
{
DateTime actual = DateTime.FromOADate(value);
Assert.Equal(expected, actual);
Assert.Equal(DateTimeKind.Unspecified, actual.Kind);
}
[Theory]
[InlineData(-657435)]
[InlineData(2958466)]
[InlineData(-657434.99999999995)]
[InlineData(2958465.999999995)]
[InlineData(double.NaN)]
public void FromOADate_InvalidValue_ThrowsArgumentException(double value)
{
AssertExtensions.Throws<ArgumentException>(null, () => DateTime.FromOADate(value));
}
public static IEnumerable<object[]> ToBinary_TestData()
{
const long Ticks = 123456789101112;
DateTime local = new DateTime(Ticks, DateTimeKind.Local);
TimeSpan offset = TimeZoneInfo.Local.GetUtcOffset(local);
long localTicks = local.Ticks - offset.Ticks;
if (localTicks < 0)
{
localTicks |= 0x4000000000000000;
}
yield return new object[] { new DateTime(Ticks, DateTimeKind.Utc), Ticks | ((long)DateTimeKind.Utc << 62) };
yield return new object[] { new DateTime(Ticks, DateTimeKind.Unspecified), Ticks | (( long)DateTimeKind.Unspecified << 62) };
yield return new object[] { local, localTicks | ((long)DateTimeKind.Local << 62) };
yield return new object[] { DateTime.MaxValue, 3155378975999999999 };
yield return new object[] { DateTime.MinValue, 0 };
}
[Theory]
[MemberData(nameof(ToBinary_TestData))]
public void ToBinary_Invoke_ReturnsExpected(DateTime date, long expected)
{
Assert.Equal(expected, date.ToBinary());
}
public static IEnumerable<object[]> FromBinary_TestData()
{
yield return new object[] { new DateTime(2018, 12, 24, 17, 34, 30, 12) };
yield return new object[] { new DateTime(2018, 12, 24, 17, 34, 30, 12, DateTimeKind.Local) };
yield return new object[] { DateTime.Today };
yield return new object[] { DateTime.MinValue };
yield return new object[] { DateTime.MaxValue };
}
[Theory]
[MemberData(nameof(FromBinary_TestData))]
public void FromBinary_Invoke_ReturnsExpected(DateTime date)
{
Assert.Equal(date, DateTime.FromBinary(date.ToBinary()));
}
[Theory]
[InlineData(3155378976000000000)]
[InlineData(long.MaxValue)]
[InlineData(3155378976000000000 | ((long)DateTimeKind.Utc << 62))]
public void FromBinary_OutOfRangeTicks_ThrowsArgumentException(long dateData)
{
AssertExtensions.Throws<ArgumentException>("dateData", () => DateTime.FromBinary(dateData));
}
public static IEnumerable<object[]> ToFileTime_TestData()
{
yield return new object[] { new DateTime(1601, 1, 1, 0, 0, 0, DateTimeKind.Utc) };
yield return new object[] { new DateTime(1601, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddTicks(1) };
yield return new object[] { new DateTime(2018, 12, 24, 0, 0, 0, DateTimeKind.Utc) };
yield return new object[] { new DateTime(2018, 11, 24, 17, 57, 30, 12, DateTimeKind.Utc) };
yield return new object[] { new DateTime(2018, 12, 24, 0, 0, 0, DateTimeKind.Local) };
yield return new object[] { new DateTime(2018, 11, 24, 17, 57, 30, 12, DateTimeKind.Local) };
}
[Theory]
[MemberData(nameof(ToFileTime_TestData))]
public void ToFileTime_Invoke_ReturnsExpected(DateTime date)
{
long fileTime = date.ToFileTime();
DateTime fromFileTime = date.Kind == DateTimeKind.Utc ? DateTime.FromFileTimeUtc(fileTime) : DateTime.FromFileTime(fileTime);
Assert.Equal(date, fromFileTime);
}
public static IEnumerable<object[]> ToFileTime_Overflow_TestData()
{
yield return new object[] { DateTime.MinValue };
yield return new object[] { new DateTime(1600, 12, 31) };
}
[Theory]
[MemberData(nameof(ToFileTime_Overflow_TestData))]
public void ToFileTime_SmallDate_ThrowsArgumentOutOfRangeException(DateTime date)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => date.ToFileTime());
}
public static IEnumerable<object[]> FromFileTime_TestData()
{
yield return new object[] { 0, new DateTime(1601, 1, 1) };
yield return new object[] { 2650467743999999999, DateTime.MaxValue };
yield return new object[] { 131875558500120000, new DateTime(2018, 11, 24, 17, 57, 30, 12) };
}
[Theory]
[MemberData(nameof(FromFileTime_TestData))]
public void FromFileTime_Invoke_ReturnsExpected(long fileTime, DateTime expected)
{
DateTime actual = DateTime.FromFileTime(fileTime);
Assert.Equal(expected.ToLocalTime(), actual);
Assert.Equal(DateTimeKind.Local, actual.Kind);
}
[Theory]
[InlineData(-1)]
[InlineData(2650467744000000000)]
public void FromFileTime_OutOfRange_ThrowsArgumentOutOfRangeException(long fileTime)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("fileTime", () => DateTime.FromFileTime(fileTime));
}
public static IEnumerable<object[]> ToFileTimeUtc_TestData()
{
DateTime local = new DateTime(2018, 12, 24, 0, 0, 0, DateTimeKind.Local);
DateTime localToUtc = TimeZoneInfo.ConvertTimeToUtc(local);
yield return new object[] { new DateTime(1601, 1, 1), 0 };
yield return new object[] { new DateTime(1601, 1, 1).AddTicks(1), 1 };
yield return new object[] { new DateTime(2018, 12, 24), 131900832000000000 };
yield return new object[] { local, localToUtc.ToFileTimeUtc() };
yield return new object[] { new DateTime(2018, 11, 24, 17, 57, 30, 12), 131875558500120000 };
yield return new object[] { DateTime.MaxValue, 2650467743999999999 };
}
[Theory]
[MemberData(nameof(ToFileTimeUtc_TestData))]
public void ToFileTimeUtc_Invoke_ReturnsExpected(DateTime date, long expected)
{
Assert.Equal(expected, date.ToFileTimeUtc());
}
public static IEnumerable<object[]> ToFileTimeUtc_Overflow_TestData()
{
yield return new object[] { DateTime.MinValue };
yield return new object[] { new DateTime(1600, 12, 31) };
}
[Theory]
[MemberData(nameof(ToFileTimeUtc_Overflow_TestData))]
public void ToFileTimeUtc_SmallDate_ThrowsArgumentOutOfRangeException(DateTime date)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>(null, () => date.ToFileTimeUtc());
}
public static IEnumerable<object[]> FromFileTimeUtc_TestData()
{
yield return new object[] { 0, new DateTime(1601, 1, 1) };
yield return new object[] { 2650467743999999999, DateTime.MaxValue };
yield return new object[] { 131875558500120000, new DateTime(2018, 11, 24, 17, 57, 30, 12) };
}
[Theory]
[MemberData(nameof(FromFileTimeUtc_TestData))]
public void FromFileTimeUtc_Invoke_ReturnsExpected(long fileTime, DateTime expected)
{
DateTime actual = DateTime.FromFileTimeUtc(fileTime);
Assert.Equal(expected, actual);
Assert.Equal(DateTimeKind.Utc, actual.Kind);
}
[Theory]
[InlineData(-1)]
[InlineData(2650467744000000000)]
public void FromFileTimeUtc_OutOfRange_ThrowsArgumentOutOfRangeException(long fileTime)
{
AssertExtensions.Throws<ArgumentOutOfRangeException>("fileTime", () => DateTime.FromFileTimeUtc(fileTime));
}
[Fact]
public static void Parse_String()
{
DateTime expected = DateTime.MaxValue;
string expectedString = expected.ToString();
DateTime result = DateTime.Parse(expectedString);
Assert.Equal(expectedString, result.ToString());
}
[Fact]
public static void Parse_String_FormatProvider()
{
DateTime expected = DateTime.MaxValue;