public void SysUtils_Tests()
{
#if __MonoCS__
Assert.IsTrue(SysUtils.IsUnix());
Assert.AreEqual(PlatformID.Unix, SysUtils.GetPlatformID());
Assert.IsFalse(string.IsNullOrEmpty(SysUtils.GetMonoVersion()));
Assert.AreNotEqual(DesktopType.Windows, SysUtils.GetDesktopType());
#else
Assert.IsFalse(SysUtils.IsUnix());
Assert.AreEqual(PlatformID.Win32NT, SysUtils.GetPlatformID());
Assert.IsTrue(string.IsNullOrEmpty(SysUtils.GetMonoVersion()));
Assert.AreEqual(DesktopType.Windows, SysUtils.GetDesktopType());
#endif
//
Assert.IsTrue(SysUtils.IsUnicodeEncoding(Encoding.UTF8));
Assert.IsFalse(SysUtils.IsUnicodeEncoding(Encoding.ASCII));
//
int days = SysUtils.DaysBetween(new DateTime(1990, 10, 10), new DateTime(1990, 10, 13));
Assert.AreEqual(3, days);
days = SysUtils.DaysBetween(new DateTime(1990, 10, 10), new DateTime(1990, 10, 02));
Assert.AreEqual(-8, days);
Assert.AreEqual(31, SysUtils.DaysInAMonth(1990, 5));
//
Assert.AreEqual(true, SysUtils.IsSetBit(3, 0));
Assert.AreEqual(true, SysUtils.IsSetBit(3, 1));
Assert.AreEqual(false, SysUtils.IsSetBit(3, 4));
//
Assert.AreEqual(495, SysUtils.Trunc(495.575));
Assert.AreEqual(3.0f, SysUtils.SafeDiv(9.0f, 3.0f));
Assert.AreEqual(0.0f, SysUtils.SafeDiv(9.0f, 0.0f));
//
Assert.Throws(typeof(ArgumentNullException), () => { SysUtils.FirstOrDefault <int>(null); });
int N = SysUtils.FirstOrDefault(new int[] { 5, 7, 10 });
Assert.AreEqual(5, N);
Assert.Throws(typeof(ArgumentNullException), () => { SysUtils.LastOrDefault <int>(null); });
N = SysUtils.LastOrDefault(new int[] { 5, 7, 10 });
Assert.AreEqual(10, N);
// other
string st = "ivan";
st = SysUtils.NormalizeName(st);
Assert.AreEqual("Ivan", st);
st = SysUtils.NormalizeName(null);
Assert.AreEqual("", st);
//
Assert.AreEqual("", SysUtils.GetFileExtension("testfile"));
Assert.AreEqual(".ext", SysUtils.GetFileExtension("testfile.eXt"));
Assert.IsFalse(SysUtils.IsRemovableDrive(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)));
Assembly asm = this.GetType().Assembly;
var attr1 = SysUtils.GetAssemblyAttribute <AssemblyTitleAttribute>(asm);
Assert.IsNotNull(attr1);
Assert.AreEqual("GKTests", attr1.Title);
Assert.Throws(typeof(ArgumentNullException), () => { SysUtils.GetAssemblyAttribute <AssemblyTitleAttribute>(null); });
}
