public void DateFunctions()
{
using (var context = new BloggingContext(ConnectionString))
{
IQueryable <int> oneRow = context.Posts.Where(p => false).Select(p => 1).Concat(new int[] { 1 });
var dateAdds = oneRow.Select(p => new List <DateTime?>
{
DbFunctions.AddDays(new DateTime(2014, 2, 28), 1),
DbFunctions.AddHours(new DateTime(2014, 2, 28, 23, 0, 0), 1),
DbFunctions.AddMinutes(new DateTime(2014, 2, 28, 23, 59, 0), 1),
DbFunctions.AddSeconds(new DateTime(2014, 2, 28, 23, 59, 59), 1),
DbFunctions.AddMilliseconds(new DateTime(2014, 2, 28, 23, 59, 59, 999), 2 - p),
DbFunctions.AddMicroseconds(DbFunctions.AddMicroseconds(new DateTime(2014, 2, 28, 23, 59, 59, 999), 500), 500),
DbFunctions.AddNanoseconds(new DateTime(2014, 2, 28, 23, 59, 59, 999), 999999 + p),
DbFunctions.AddMonths(new DateTime(2014, 2, 1), 1),
DbFunctions.AddYears(new DateTime(2013, 3, 1), 1)
}).First();
foreach (var result in dateAdds)
{
Assert.IsTrue(result.Value == new DateTime(2014, 3, 1, 0, 0, 0));
}
var dateDiffs = oneRow.Select(p => new {
a = DbFunctions.DiffDays(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
b = DbFunctions.DiffHours(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
c = DbFunctions.DiffMinutes(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
d = DbFunctions.DiffSeconds(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
e = DbFunctions.DiffMilliseconds(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
f = DbFunctions.DiffMicroseconds(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
g = DbFunctions.DiffNanoseconds(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(2000, 1, 1, 0, 0, 0)),
h = DbFunctions.DiffMonths(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(3000, 1, 1, 0, 0, 0)),
i = DbFunctions.DiffYears(new DateTime(1999, 12, 31, 23, 59, 59, 999), new DateTime(3000, 1, 1, 0, 0, 0)),
j = DbFunctions.DiffYears(null, new DateTime(2000, 1, 1)),
k = DbFunctions.DiffMinutes(new TimeSpan(1, 2, 3), new TimeSpan(4, 5, 6)),
l = DbFunctions.DiffMinutes(new TimeSpan(1, 2, 3), null)
}).First();
Assert.AreEqual(dateDiffs.a, 1);
Assert.AreEqual(dateDiffs.b, 1);
Assert.AreEqual(dateDiffs.c, 1);
Assert.AreEqual(dateDiffs.d, 1);
Assert.AreEqual(dateDiffs.e, 1);
Assert.AreEqual(dateDiffs.f, 1000);
Assert.AreEqual(dateDiffs.g, 1000000);
Assert.AreEqual(dateDiffs.h, 12001);
Assert.AreEqual(dateDiffs.i, 1001);
Assert.AreEqual(dateDiffs.j, null);
Assert.AreEqual(dateDiffs.k, 183);
Assert.AreEqual(dateDiffs.l, null);
}
}
public void TimeDiffNanoseconds()
{
TimeSpan time = stored.Add(TimeSpan.FromTicks(-1));
#if !EFOLD
var q = this.Entities
.Where(x =>
DbFunctions.DiffNanoseconds(time, x.Time) == 100);
#else
var q = this.Entities
.Where(x =>
EntityFunctions.DiffNanoseconds(time, x.Time) == 100);
#endif
q.Should().NotBeEmpty();
}
public void DateTimeDiffNanoseconds()
{
DateTime date = stored.AddTicks(-1);
#if !EFOLD
var q = this.Entities
.Where(x =>
DbFunctions.DiffNanoseconds(date, x.DateTime) == 100);
#else
var q = this.Entities
.Where(x =>
EntityFunctions.DiffNanoseconds(date, x.DateTime) == 100);
#endif
q.Should().NotBeEmpty();
}
public void DbFunctionsTests_DiffNanoseconds_DateTime_Test()
{
this.AssertException <NotSupportedException>(() => {
this.GetOrderQuery().Select(x => DbFunctions.DiffNanoseconds(this.TestDateTime, this.TestDateTime)).First();
});
}
