public void ImplicitCastToInt_SingleCase_Int()
{
ListOrSingleValue <int> o = 7;
int value = o;
Assert.Equal(7, value);
}
public void ImplicitCastToSingle_EmptyListOrSingle_Default()
{
ListOrSingleValue <int> o = new ListOrSingleValue <int>();
int intValue = o;
Assert.Equal(0, intValue);
}
public void IsSingle_ReferencedTypeParameter_True()
{
var o = new ListOrSingleValue <List <int> >();
Assert.Equal(0, o.Count);
Assert.True(o.IsSingle);
Assert.Null((List <int>)o);
}
public void IsSingle_ValuedTypeParameterInt_True()
{
var o = new ListOrSingleValue <int>();
Assert.Equal(0, o.Count);
Assert.True(o.IsSingle);
Assert.Equal(default(int), (int)o);
}
public void Initialization_SingleValue_Correct()
{
ListOrSingleValue <int> o = 5;
Assert.Equal(1, o.Count);
Assert.Equal(o.CastErrorMode, CastErrorMode.ThrowExceptionIfList);
Assert.True(o.IsSingle);
Assert.Equal(5, o.ElementAt(0));
}
public void ToString_ListCase_CommaSeparatedValues()
{
var o = new ListOrSingleValue <int>()
{
1, 2, 3
};
Assert.Equal(o.ToString(), "1,2,3");
}
public void ImplicitCastToInt_ListCase_InvalidCastException()
{
var o = new ListOrSingleValue <int>()
{
1, 2, 3
};
Assert.Throws <InvalidCastException>(() => { int value = o; });
}
public void IsSingle_ListWithSingleElement_True()
{
var o = new ListOrSingleValue <int>();
o.Add(5);
Assert.Equal(1, o.Count);
Assert.True(o.IsSingle);
Assert.Equal(5, o.ElementAt(0));
}
public void ImplicitCastToSingle_UseFirstOrDefaultElementIfListMode_CastedAsFirstElement()
{
var o = new ListOrSingleValue <int>(CastErrorMode.UseFirstOrDefaultElementIfList)
{
1, 2, 3
};
int intValue = o;
Assert.Equal(1, intValue);
}
public void Initialization_List_Correct()
{
var o = new ListOrSingleValue <int>()
{
1, 2, 3
};
Assert.Equal(3, o.Count);
Assert.False(o.IsSingle);
Assert.Equal(o.CastErrorMode, CastErrorMode.ThrowExceptionIfList);
Assert.Equal(1, o.ElementAt(0));
Assert.Equal(2, o.ElementAt(1));
Assert.Equal(3, o.ElementAt(2));
}
public void ImplicitCastFromList_ListOfInt_ListOrSingle()
{
var list = new List <int> {
10, 12, 15
};
ListOrSingleValue <int> o = list;
Assert.Equal(3, o.Count);
Assert.Equal(o.CastErrorMode, CastErrorMode.ThrowExceptionIfList);
Assert.False(o.IsSingle);
Assert.Equal(10, o.ElementAt(0));
Assert.Equal(12, o.ElementAt(1));
Assert.Equal(15, o.ElementAt(2));
}
public void ToString_EmptyReferencedTypeListCase_BullReferenceException()
{
var o = new ListOrSingleValue <List <int> >();
Assert.Throws <NullReferenceException>(() => o.ToString());
}
public void ToString_EmptyIntListCase_IntDefaultValue()
{
var o = new ListOrSingleValue <int>();
Assert.Equal(o.ToString(), default(int).ToString());
}
public void ToString_SingleCase_SingleValueString()
{
ListOrSingleValue <int> o = 8;
Assert.Equal(o.ToString(), "8");
}
