public void RomComparer_CompareTwoNullObjects_ReturnsEqual()
{
object x = null;
object y = null;
Assert.Equal(0, RomComparer.GetDefaultComparerForMode(RomComparer.DefaultCompareMode).Compare(x, y));
}
public void RomComparer_CompareTwoNonRoms_ThrowsArgumentException()
{
var x = new object();
var y = Array.CreateInstance(typeof(int), 1);
Assert.Throws <ArgumentException>(() => RomComparer.GetDefaultComparerForMode(RomComparer.DefaultCompareMode).Compare(x, y));
}
/// <summary>
/// Compares the instance to another <see cref="IProgramDescription"/>.
/// </summary>
/// <param name="other">The other <see cref="IProgramDescription"/> to compare against.</param>
/// <returns>If this instance and <paramref name="other"/> are considered equivalent, returns zero. A non-zero value indicates inequality.</returns>
/// <remarks>Consider implementing the IComparable / IComparer / IEquatable / IEqualityComparer interfaces on ProgramDescription instead?
/// Deficiency noted here: https://github.com/intvsteve/VINTage/issues/239 </remarks>
private int CompareToIProgramDescription(IProgramDescription other)
{
var result = 1;
if (other != null)
{
// Always use strict comparer.
result = RomComparer.GetDefaultComparerForMode(RomComparison.Strict).Compare(Rom, ProgramInformation, other.Rom, other.ProgramInformation);
}
return(result);
}
public void RomComparer_GetDefaultComparerForMode_BehavesAsExpected(RomComparison comparisonMode, RomComparer expectedComparer, bool shouldThrowArgumentException)
{
if (shouldThrowArgumentException)
{
Assert.Throws <ArgumentException>(() => RomComparer.GetDefaultComparerForMode(comparisonMode));
}
else
{
var comparer = RomComparer.GetDefaultComparerForMode(comparisonMode);
Assert.NotNull(comparer);
Assert.True(object.ReferenceEquals(expectedComparer, comparer));
}
}
public void RomComparer_FirstNullRomSecondNotRom_ThrowsArgumentException()
{
var y = new object();
Assert.Throws <ArgumentException>(() => RomComparer.GetDefaultComparerForMode(RomComparer.DefaultCompareMode).Compare(null, y));
}